CN102947027A - Superhard body, tool and method for making same - Google Patents
Superhard body, tool and method for making same Download PDFInfo
- Publication number
- CN102947027A CN102947027A CN2011800068456A CN201180006845A CN102947027A CN 102947027 A CN102947027 A CN 102947027A CN 2011800068456 A CN2011800068456 A CN 2011800068456A CN 201180006845 A CN201180006845 A CN 201180006845A CN 102947027 A CN102947027 A CN 102947027A
- Authority
- CN
- China
- Prior art keywords
- superhard
- pcd
- glomerocryst
- support member
- hold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/02—Twist drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23B2222/28—Details of hard metal, i.e. cemented carbide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2226/00—Materials of tools or workpieces not comprising a metal
- B23B2226/31—Diamond
- B23B2226/315—Diamond polycrystalline [PCD]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Drilling Tools (AREA)
- Powder Metallurgy (AREA)
- Earth Drilling (AREA)
Abstract
A method for making a superhard tip for a rotary machine tool, the method including contacting at least one sintered polycrystalline superhard structure (22, 24) to a carrier body (30) comprising cemented carbide to form a pre- compact assembly (40), and subjecting the pre-compact assembly (40) to a pressure and temperature at which the superhard material is thermodynamicaliy stable to form a pre-form body for a superhard tip; and processing the pre-form body to form a superhard tip.
Description
Background technology
Embodiment of the present invention relate generally to a kind of manufacturing and are used for the superhard body of rotating machinery instrument and the method for superhard point of a knife, especially but exclusively be used for fluted drill or slotting cutter; And the superhard point of a knife of making thus and the instrument that comprises superhard point of a knife.
The example of superhard material is polycrystalline diamond (PCD) material and polycrystalline cubic boron nitride (PCBN) material.The PCD material comprises the diamond crystalses of a large amount of basic symbiosis, and the PCBN material comprises cubic boron nitride (cBN) particle in matrix, and this matrix comprises metal and/or ceramic material.PCD and PCBN can stand to make at least about the super-pressure of 5.5GPa with at least about 1250 degrees centigrade temperature by a large amount of diamond crystalses or the cBN crystal grain that will assemble respectively.
The rotating machinery instrument is the machine tool of rig for example, comprises the cutter elements of rotation.
U.S. Patent Application Publication No. 2008/0247899 discloses and a kind ofly can be connected to conventional tool substrate for example spirality solid PCD and the PCBN point of a knife of fluted drill, rig and slotting cutter.
The method of the rotating machinery instrument of a kind of improved superhard edge sword of manufacturing (superhard-tipped) need to be provided.
Summary of the invention
From first aspect, can provide a kind of manufacturing to be used for the method for the superhard point of a knife of rotating machinery instrument, the method comprises: make the contact of at least one sintering superhard structure example of (being presintering) glomerocryst such as PCD structure comprise the body that holds of sintered-carbide, or contact is used for holding the front body structure of body, with formation precompressed assembly, and make the precompressed assembly stand the thermodynamically stable pressure and temperature of superhard material with the superhard point of a knife that is formed for the rotating machinery instrument or the preformed body that is used for superhard point of a knife.The preformed body can be processed to be formed for for example superhard point of a knife of fluted drill or slotting cutter of rotating machinery instrument.
The superhard structure of the glomerocryst of sintering comprises the glomerocryst superhard material of making by the method for a plurality of superhard particles of sintering under at least about the hyperpressure of 2GPa.
From second aspect, can provide a kind of preform for superhard point of a knife and/or superhard point of a knife.
From the third aspect, can provide a kind of assembly and/or rotating machinery instrument of rotating machinery instrument.
Description of drawings
Set forth with reference to the accompanying drawings explanation nonrestrictive example setting of the present disclosure, wherein,
Fig. 1 has shown the perspective schematic view that is used for the exemplary preformed body of superhard point of a knife.
Fig. 2 A has shown that exemplary precompressed (pre-compact) assembly is in the perspective schematic view of assembled state.
Fig. 2 B has shown that the pre-laminate of exemplary assembling is in the perspective schematic view of unassembled state.
Fig. 3 has shown the exemplary schematic side elevation that holds body.
Fig. 4 has shown the perspective schematic view that is used for the exemplary superhard point of a knife of fluted drill.
Fig. 5 has shown the schematic side elevation of exemplary fluted drill.
Fig. 6 A has shown the exemplary perspective schematic view that holds the part of body.
Fig. 6 B has shown the exemplary part of body and the perspective schematic view of passing the fore-and-aft plane that holds body of holding of Fig. 6 B.
Fig. 6 C has shown that exemplary precompressed assembly is in the perspective schematic view of assembled state.
Identical mark refers to the same general feature in institute's drawings attached.
Detailed Description Of The Invention
Below explain some term that uses in this article.
Superhard or super hard material is interpreted as and means to have at least material of 25GPa Vickers hardness.Term " the superhard structure of glomerocryst " means to comprise the structure of a large amount of superhard crystal grain of sintering.Synthetic and natural diamond, polycrystalline diamond (PCD), cubic boron nitride (cBN) and glomerocryst cBN (PCBN) material are the examples of superhard material.Diamond synthesis is also referred to as diamond, is the diamond of making.That polycrystalline diamond (PCD) material comprises is a large amount of (gathering a plurality of) diamond crystals, a large amount of parts in the crystal grain directly mutually in bonding and wherein adamantine content be material at least about 80 percents by volume.Gap between the diamond crystals can at least part ofly be filled with the binder material that comprises for the synthesis of adamantine catalyst material, or they may be substantially of empty.The catalyst material of diamond synthesis can promote the growth of diamond synthesis crystal grain and/or the direct symbiosis (inter-growth) of synthetic or natural diamond crystal grain under synthetic or the thermodynamically stable pressure and temperature of natural diamond.The example of diamond catalyst material is Fe, Ni, Co and Mn and the particular alloy that comprises these.The body that comprises the PCD material comprises that at least one catalyst material is removed and the zone of clearance space between the remaining diamond crystals from the gap.The PCBN material comprises and is dispersed in cubic boron nitride (cBN) crystal grain that comprises in metal or the ceramic material matrix.
Machine tool is a kind of motive power machine device, and it can comprise for example assembly of metal, composite, timber or polymer of material by the machined manufacturing.Machined is removing materials optionally on body or the workpiece, particularly in industrial situation.The rotating machinery instrument comprises for example drill bit of cutter elements, and in use around the rotation of it self axle.Tipped tool or insert (insert) are the instruments that are made of cutter elements of cutting edge wherein, and described cutter elements is comprised of the material different from the remainder of this instrument or insert, and this cutter elements is usually by soldering or be clamped on the body.Can make point of a knife for machine tool it is shaped to structure for point of a knife by the preformed body.The rake face of machine tool is the surface that chip flows through thereon when this instrument is used for removing material from body, the flowing of the chip that the rake face guiding is newly-generated.Chip is the part of the body removed from the working surface of body by the machine tool in using.The cutting edge of point of a knife or instrument is intended to carry out the edge of rake face of the cutting of body.
Will be with reference to the embodiment of Fig. 1-6C explanation for the manufacture of the method for the superhard point of a knife of rotating machinery instrument.
In the embodiment that Fig. 1 describes, comprise superhard structure 20 and hold body 30 for the manufacture of the preformed body 10 of superhard point of a knife.The example of the superhard point of a knife 60 of fluted drill has been described among Fig. 4.With reference to Fig. 2 A and Fig. 2 B, preformed body 10 can be by comprising following method manufacturing: what the superhard structure 22 of the sintered polycrystalline that makes at least one comprise superhard material, 24 (being also referred to as superhard structure at this for simplicity) contact comprised cemented carbide material (or comprising the front body structure that holds body) holds body 30 forming precompressed assembly 40, and makes precompressed assembly 40 stand the heat-staple pressure and temperature of superhard material to form preformed body 10.Hyperpressure may be at least about 2GPa.
In the structure that replenishes to superhard structure 22 on the one hand, 24 and on the other hand the front body structure that holds body 30 or hold body 30 preformed is provided separately.Provide comprise superhard material for example the superhard structure 22,24 of PCD or PCBN material as the presintering structure.In other words, made in the following way this structure:, and form as required and structure and being adapted to holds the structure of body 30 (or be used for holding body 30 front body structure) producing superhard body at sintering superhard material at least about the hyperpressure of 5GPa and under at least about 1250 degrees centigrade temperature.
With reference to Fig. 3, the example that holds body 30 of drill bit (not shown) precompressed assembly 40 comprises tungsten carbide particle and is used for the cobalt metal of bonded particulate, and the working end 32 with blunt nosed taper, taper work end 32 has the whole round as a ball or spherical round as a ball top 321 that radius of curvature is r, be used for superhard point of a knife is joined to the link 34 of instrument, and the side surface 36 that may have endways integral cylindrical between 32 and 34.Working end 32 has the working surface 322 that arranges with cone angle κ with respect to the axle that aligns with central longitudinal axis L.
Hold that body 30 may comprise the sintered-carbide of presintering or for the manufacture of the not sintering precursor material of sintered-carbide.Provide to hold body 30 (or for the precursor that holds body), its configuration is used for holding the superhard structure 22,24 as shown in Fig. 2 B.For example, hold body 30 and can have the depression 38 that is formed on working end 32, superhard structure 22,24 can be inserted wherein.In the present embodiment, depression 38 can directly be passed the top 321 that holds body 30 and is configured to receive and hold the corresponding superhard structure 22 of presintering, 24 pairs, and it inserts depression 38 to form pre-laminate 40.In this special embodiment, to cave in 38 and superhard structure 22,24 be configured so that the superhard structure 22 in 321 places, top that holds body 30,24 overlapped with contact.In a variant, depression 38 can be configured to hold the superhard structure 22 of glomerocryst, 24 by interference fit.
If before assembling, the superhard structure 22 of washing, 24 and comprise depression at least a portion that holds body 30 of 38 can reach better effect so in acidity or alkaline solution.
In a variant of this method, can be adjacent to sunk surface, in superhard structure with hold binding agent is provided between the body, binding agent can with the superhard construction bonds of glomerocryst.
In case as shown in Fig. 2 A, assemble, just pre-laminate 40 can be placed the container (not shown) that is suitable for ultra-high temperature stove or press subsequently, and it is stood at least about the pressure of 2GPa and fully high temperature to form as globality body 10 illustrated in fig. 1, and it can be used as the preformed body of superhard point of a knife.In one embodiment, pressure can be at least about 5.5GPa and temperature can be at least about 1300 degrees centigrade, and can be directly in preformed body 10 the direct superhard structure 22 of sintering, 24 each other.In some variants of the method, pressure can be at least 2GPa or at least 5.5GPa; In some variants of the method, temperature can be at least about 1200 degrees centigrade, at least 1300 degrees centigrade or at least 1400 degrees centigrade.
As used herein, spiral bit is for by the inserted drill with flute of rotational shear cutting action at Workpiece boring, and described workpiece particularly comprises the workpiece of metal, timber and plastics.Fluted drill remains in chuck, chuck or other mechanical coupler that is installed on the accurate main shaft usually.Its around the rotation of self rotating shaft and can linear movement so that drilling tool passes forward workpiece, discharge old metal with the form of smear metal or chip.Fluted drill can comprise the element that can cut and discharge old metal.The working end of drilling tool comprises cutting edge, its usually and diameter extend in parallel, each extends from the center chisel edge.Flute can have the form that shows whole semicircular groove at cross section.Although some drilling tools comprise straight flute, the axle of itself and instrument extends in parallel, and most of fluted drills comprise the spirality flute, and helical angle determines that not only the anterior angle of cutting edge also determines the easiness of chip removal and the hardness of drilling tool.
As shown in Figure 4, then can form by processing point of a knife preform 10 the superhard point of a knife 60 (its example has been described) of spiral bit in Fig. 5.Exemplary spiral bit 70 can comprise the auger spindle 72 with flute 74, and is connected to the superhard point of a knife 60 of auger spindle 72 ends 76.Particularly, can hold from the instrument of point of a knife preform 10 part 30 removes carbide material and forms the flute 62 that connects on it with the flute 74 corresponding to auger spindle 70 superhard point of a knife 60.
, in one embodiment, hold body 30 and have the depression 381 and 382 that is formed in the working end 32 to 6C with reference to Fig. 6 A.Depression 381 has side surface 3811 and 3812, and caves in and 382 have side surface 3821 and 3822.Each side surface 3811 and 3821 and vertical plane PL tilt with angle beta, and respectively cave in and 381 and 382 be configured to receive separately superhard structure 22 and 24 and support member 301 and 302 separately. Depression 381 and 382 and support member 301 and 302 cooperative arrangement be used for being assembled into precompressed assembly 40.Each support member 301 and 302 is in superhard structure 22 separately and 24 and separately between the inclined side surfaces 3811 and 3821 and contact.Each superhard structure 22 and 24 therefore " folder " in support member 301 separately and 302 and separately between the side surface 3812 and 3822.In the present embodiment, inclined side surfaces 3811 and 3821 is configured to make separately support member to depart from operation about separately cross force or force of periphery FC (laterally or circumference) with respect to the superhard structure 22 and 24 of glomerocryst separately, in response to support member 301 and 302 is separately applied axial force F L.Therefore support member 301 and 302 can strengthen cross force or the force of periphery in superhard structure 22,24 at precompressed assembly 40 during processing under the super-pressure, wherein can axially apply main power FL.Support member 301 and 302 can remove from the preformed body after ultra high pressure treatment.
In order after ultra high pressure treatment, more easily to separate support member 301 and 302 from the apex point preform, can be in the compacting assembly, support member 301 and 302 and on the one hand superhard structure 22,24 and on the other hand hold placement between the body surface 3811,3812,3821 and 3822 substantially non-reacted film or paper, it for example can comprise aluminium oxide.Can comprise the fine grain slurry of the Al2O3 with the most about 100 microns average particle size particle size by casting and prepare alumina foil.The thickness of paper tinsel can be at least about 50 microns and the most about 1000 microns, and in one embodiment, the thickness of paper tinsel is about 500 microns.After the precompressed assembly was processed under super-pressure, substantially non-reacted paper tinsel can have following situation: make support member 301,302 easier separation by for example sandblast.
In one embodiment, superhard point of a knife can have elongated or whole columniform form, and it has near-end and far-end, and near-end is working end and far-end is link, and side surface connects near-end and far-end; At least a portion of working end has basic taper, frustoconical or round as a ball taper, and for example sphere is rolled conical shape; Deploy superhard structure adjacent to the working end.In one embodiment, at least one depression is formed at from the working end and holds the body and hold at least one superhard structure.In one embodiment, depression can be by the groove of substantially parallel plane surface to forming, and is used for holding the superhard structure of glomerocryst of the form that is generally wafer or layer.The superhard structure of glomerocryst can have the integral form of tongue piece, and it can be in the insertion groove of working end.
In one embodiment, superhard structure can comprise the PCD material, and in a variant, superhard structure can comprise heat-staple PCD structure.As used herein, thermally stable P CD structure comprises the PCD material, wherein at least one zone of PCD structure or even whole volume in substantially be used for adamantine active solvent/catalyst material.Reaching one of such mode is to remove solvent/catalyst material by the gap of acidleach from the PCD material.In one embodiment, the PCD structure can not have to be used as the material of adamantine solvent/catalyst material substantially.In some embodiments, in the PCD structure, can have less than about 5 percents by volume or even less than the adamantine solvent/catalyst that is used for of about 2 percents by volume.In some embodiments, the PCD structure can be at least part of porous, or substantially whole PCD structure is porous.
As used herein, the PCD grade is with regard to the feature size of this long-pending content and diamond crystals for example, diamond crystals and may be present in the volume content of material in the gap area gap area between forming and the PCD material that characterizes.Different PCD grades can have different microstructures and different mechanical performances, for example elasticity (Young) modulus E, cross-breaking strength (TRS), toughness (for example so-called K1C toughness), hardness, density and thermal coefficient of expansion (CTE).Different PCD grades in use also may show difference.For example, the wear rate of different PCD grades may be different with resistance to fracture.
In certain embodiments, the PCD material can have the Young's modulus at least about 850GPa, and in certain embodiments, the PCD structure can have at least about 1000MPa, or even at least about the cross-breaking strength of 1100MPa.In certain embodiments, the PCD structure can comprise at least about the average-size of 90 percents by volume about 0.1 micron in 25 micrometer ranges, even the diamond crystals of about 0.1 micron interior bonding in about 10 micrometer ranges.In one embodiment of the invention, the PCD structure can comprise the diamond crystals of multi-modal distribution of sizes.In some embodiments, the PCD structure can comprise distribution of sizes and be characterized as following bond diamond crystal grain: the crystal grain at least about 50% has greater than about 5 microns average-size, and has in about 10 microns average-sizes that arrive in about 15 micrometer ranges at least about 20% crystal grain.
The gap of crystallite dimension or intergranule is expressed as equivalent diameter (ECD).As used herein, " equivalent diameter " of crystal grain is the area diameter of a circle identical with the cross section that passes crystal grain (ECD).The image analytical method on the cross section by passing body or surface, can with regard to single, crystal grain or be bonded in together intrinsic crystal grain and measure the distribution of sizes of ECD and the average-size of a plurality of particles does not bond.
In some embodiments, the gap mean free path that is included between the interior adjacent diamond crystals of PCD material can be at least about 0.05 micron and about 1.5 microns at the most; The standard deviation of mean free path is at least about 0.05 micron and about 1.5 microns at the most.As used herein, " the gap mean free path " in the glomerocryst material is interpreted as the average distance that passes each gap between the periphery difference of gap, and this glomerocryst material comprises the internal structure that comprises gap or gap area, for example is the PCD material.Mean free path is by being averaging definite to the length at many straight lines drawing of micrograph of polishing sample in cross section.The standard deviation of mean free path is the standard deviation of these values.Determine similarly and measure adamantine mean free path.
Can characterize with regard to the combination of the standard deviation of the average thickness of diamond gap and this thickness the homogenieity of microscopic structure.The homogenieity of PCD material or uniformity can use the micrograph of a large amount of polishing sections to quantize by statistical evaluation.The distribution of filler phase or hole can be distinguished from the distribution of diamond phase with electron microscope easily in the PCD material, and can use and be similar among the EP 0974566 (also can referring to WO 2007/110770) disclosed method and measure.This method allows to pass the average thickness of several lines that microscopic structure arbitrarily draws or the statistical evaluation in gap along several.Average binding agent or gap thickness are also referred to as " mean free path ".For the bi-material with similar whole composition or binder content and average diamond grain size, the material with less average thickness is homogeneous more often because this show binding agent diamond mutually in the distribution of thinner yardstick.In addition, the standard deviation of this measurement is less, and structure may be more even.It is larger that large standard deviation shows that adhesive thickness changes, and structure is more inhomogeneous.
Measuring for example crystallite dimension of mean value and quantity, in the deviation of crystal grain continuity or gap mean free path, reliability and the accuracy of some images of the different piece in surface or cross section in order to improve statistics.Be used for to measure amount of images to determined number or parameter and can be at least about 9 or even up to about 36.The resolution ratio of image needs enough high to observe interior crystal grain and interior phase boundary.In statistical analysis, obtain typical case's 16 width of cloth images of zones of different at the body surface that comprises the PCD material, and on each image and stride image and carry out statistical analysis.Each image should comprise at least about 30 diamond crystalses, although more multiple grain can allow more reliable and accurately statistical picture analysis.
In some embodiments, the PCD structure can be to instruct such as PCT publication number WO2007/020518, it discloses the polycrystalline diamond abrasive element that comprises the fine grain polycrystalline diamond material, be characterised in that it has gap mean free path value less than 0.60 micron, and the standard deviation of gap mean free path is less than 0.90 micron.In one embodiment, polycrystalline diamond material can have the average diamond grain size of about 0.1-about 10.5.
A kind of method for the manufacture of the superhard structure that comprises the PCD material comprises: for the synthesis of adamantine catalyst (being also referred to as " solvent/catalyst ") for example cobalt in the presence of, at diamond than graphite under the more thermodynamically stable temperature and pressure, for example at least about the pressure of 5GPa with at least about under 1250 degrees centigrade the temperature, diamond crystals is sintered together.In some variants, pressure can be greater than 6.0GPa or even at least about 8.0GPa.
When the gathering block with diamond crystals is sintered together to form the PCD material, can in every way solvent/catalyst material be incorporated into and assembles in the block.A kind of mode comprises that the method by precipitating deposits to metal oxide on the surface of a plurality of diamond crystalses, makes it be consolidated into the gathering block subsequently from the aqueous solution.These class methods are disclosed among PCT publication number WO 2006/032984 and the WO2007/110770.Another kind of mode comprises with the powder type preparation or the metal alloy that comprises for adamantine catalyst material is provided, and this powder is mixed with a plurality of diamond crystalses, makes subsequently it be consolidated into the gathering block.Can mix by means of ball mill.Other additive can be sneaked into and assemble in the block.The gathering block of diamond crystals (comprising any solvent/catalyst material particle or the particles of additive material introduced) can be shaped to not the structure of bonding or loose bonding, and it is placed on the cemented carbide substrate.This cemented carbide substrate can contain the source that is useful on adamantine catalyst material, for example cobalt.Comprise the gathering block of crystal grain and the assembly of base material and can be encapsulated in the container that is suitable for the super-pressure furnace apparatus, and make this container stand pressure greater than 6GPa.Various extra-high tension units are known, and can use (torroidal) that comprise belt, annular, cube and cubic many tops anvil system.The temperature of container is tackled in making the catalyst material melting enough high, and enough low for avoiding diamond significantly to be converted into graphite.Time tackles in making sintering finish long enough, but should lack to boost productivity as far as possible as far as possible and reduce cost.
Superhard PCD structure can be made by the PCD composite sheet that comprises the PCD structure that is bonded to cemented carbide substrate, can provide as above-mentioned.The PCD composite sheet can have for example general disc-like shape.In one embodiment, cemented carbide substrate can remove by it is ground off, and remaining substantially only self-supporting PCD body can use for example electric discharge machine processing (EDM) cutting PCD structure thus.The EDM cutting method is included between EDM line and the PCD body and produces electric spark and make the PCD body deteriorated with the part.Can pass the PCD body according to the required form guiding EDM line of PCD structure.The EDM line can comprise the alloy that comprises copper (Cu) and zinc (Zn) and/or other metals, and the EDM cutting technique can cause some from the metal deposition of EDM line to the cutting surfaces of PCD structure.Similarly, holding among the embodiment that cuts out depression in the body in sintered-carbide by EDM, some metals from the EDM line can deposit on the cutting surfaces that holds body.
If before assembling forms the precompressed assembly, PCD structure at least and the cutting surfaces that holds body are cleaned, can expect to reach better effect.In one embodiment, can be at least about in the weak solution of 1 and at the most about 3 nitric acid or hydrochloric acid by being immersed in the pH value, in ultra sonic bath, clean the PCD structure in about 20 to 30 minutes and sintered-carbide holds body.In another embodiment, PCD structure and/or hold body and may be dipped in the ammonia solution that has at least about 13 pH value.The sour cleaning activity of an example can be expressed as follows: xCu+yZn+2 (x+y) HNO
3=xCu
(2+)+ yZn
(2+)+ (x+y) H
2+ 2 (x+y) NO
3 (-)The ammonia cleaning activity of example can be expressed as follows: xCu+yZn+z (x+y) NH
4OH=x[Cu[NH
3] z]
(2+)+ y[Zn[NH
3] z]
(2+)+ z (x+y) H
2O.In both cases, x and y are the atomic ratios of Cu and Zn, and the z value is 2 or 4.After in acid or aqueous slkali, processing, can in water and ethanol, wash the PCD structure and hold body to remove the salting liquid of absorption, carry out subsequently drying.
In the variant of the method that the PCD body that is bonded to cemented carbide substrate is provided, form with the method that holds the PCD structure that body uses and can comprise the base material that is removed to small part by it is ground off, as discussed previously.In this variant, the PCD structure can be used a kind of sintered-carbide manufacturing of grade and make up with different brackets in the precompressed assembly subsequently.This has following situation: superhard point of a knife can comprise and be difficult to directly to hold the PCD material rate that intrinsic category of carbides or grade form being contained in.For example, comprise the PCD material and hold in the embodiment that body comprises cobalt knot carbide in the superhard structure of glomerocryst, the cobalt content that holds body can be lower than the preferred content of sintering PCD in for single step.This can be expectation, because it is more wear-resisting than the carbide that has than high cobalt content to have a carbide of relatively low cobalt content.In addition, having may be better than the carbide of low cobalt content and the thermomechanical property coupling of PCD material, therefore is desirably in the PCD structure and holds the internal stress that produces by bonding between the body lower, causes more durable instrument.Another situation may be, can use to comprise the PCD material that has than the diamond crystals of harmonic(-)mean size, and need to be in initial diamond dust the premixed solvent/catalyst.
In certain embodiments, hold body and can comprise cobalt cemented tungsten carbide, wherein cobalt content is at least 1 percentage by weight and about 7 percentage by weights at the most.In other embodiments, cemented tungsten carbide can comprise the cobalt at least about 9 percentage by weights.
Superhard structure comprise the PCD material or the embodiment that substantially formed by the PCD material in, binding agent comprises for the synthesis of adamantine solvent/catalyst (for example cobalt), can be provided in superhard structure and holds between the body.This can improve superhard structure and the bonding that holds body.Binding agent can be the form of wafer, layer or film.
Method disclosed herein impliedly requires the component of superhard point of a knife to carry out at least twice processing under super-pressure, at every turn under several GPa.This be because with the glomerocryst superhard material as the original material of superhard structure will be under at least about the hyperpressure of 5GPa sintering, and will be again stand super-pressure at least about 2GPa as the part of precompressed assembly.Processing under the super-pressure may be regarded as relatively expensive, and those skilled in the art may be unwilling to use the such processing more than once in single point of a knife is made.Yet, use the disclosed method of dual ultra high pressure treatment as if to have the situation that the superhard structure of glomerocryst is provided and holds the strong bonding of body.Owing to provide presintering to the superhard structure of glomerocryst, thus under super-pressure in Connection Step the distortion of structure can be reduced.The cracking of the superhard structure of glomerocryst can be reduced.
Following clause conduct further describing the method, superhard point of a knife and machine tool is provided:
1, makes the method for the preformed body of the superhard point of a knife that is used for the rotating machinery instrument, particularly but the non-fluted drill that exclusively is used for, described method comprise make that the contact of the superhard structure of at least one sintered polycrystalline comprises sintered-carbide hold body forming the precompressed assembly, and make the precompressed assembly stand the thermodynamically stable pressure and temperature of superhard material to form the preformed body.
2, the method for clause 1, being included in binder material exists the lower a plurality of superhard crystal grain that makes gathering to stand to be at least the pressure of 5GPa and at least about 1250 degrees centigrade temperature, so that the superhard body that comprises the glomerocryst superhard material to be provided, and this superhard body of processing is to provide glomerocryst superhard structure.
3, the method for one of any aforementioned clause is included in to hold to form in body or the precursor body and caves in, and this concave configuration is for holding the superhard structure of glomerocryst; And in depression, insert the superhard structure of glomerocryst to form the precompressed assembly.
4, the method for one of any aforementioned clause wherein holds body and comprises cobalt cemented tungsten carbide, cobalt content at 1 percentage by weight of cemented carbide material in the scope of 7 percentage by weights.
5, the method for one of any aforementioned clause, wherein superhard structure comprises polycrystalline diamond (PCD) material.
6, the method for one of any aforementioned clause, wherein superhard structure comprises heat-staple PCD material.
7, the method for one of any aforementioned clause, wherein superhard structure comprises the PCD material, this PCD material comprises and has average-size and be at least about 0.1 micron and about 10 microns diamond crystals at the most, and its intermediate gap mean free path is less than 0.6 micron, and the standard deviation of mean free path is less than 0.9 micron.
8, the method for one of any aforementioned clause, wherein superhard structure comprises adjacent diamond crystals gap mean free path and is at least about 0.5 micron and about 1.5 microns PCD material at the most; And the standard deviation of mean free path is at least about 0.05 micron and about 1.5 microns at the most.
9, the method for one of any aforementioned clause is included in the pH value at least 1 and at the most 3 the acid solution, or is at least 10 in the pH value, or processes the superhard structure of glomerocryst at least in 13 the alkaline solution and/or hold body.
10, the method for one of any aforementioned clause, comprise that configuration holds body and is adjacent to superhard structure and holds the support member that body surface arranges to hold at least one superhard structure and at least one, make the contact of the superhard structure of glomerocryst hold body, and support member is placed on superhard body structure surface and holds between the body surface to form the precompressed assembly.
11, the method for clause 10, depression has inclined surface and is configured to hold the superhard structure of glomerocryst and support member; The superhard structure of glomerocryst and support member are inserted in the depression to form the precompressed assembly; Support member is arranged between the inclined side surfaces of the superhard structure of glomerocryst and depression; Inclined side surfaces is configured to can make support member with respect to the superhard structure lateral run-out of glomerocryst in response to the power that axially is applied to the precompressed assembly.
12, the method for clause 10 or clause 11, comprise substantially non-reacted paper tinsel is provided, and substantially non-reacted paper tinsel (for example comprising aluminium oxide) is placed support member and superhard body structure surface or holds body surface, or the two and superhard body structure surface and hold between the body surface, to form the precompressed assembly; Make the precompressed assembly stand the thermodynamically stable pressure and temperature of superhard material; With remove support member.
13, make the method for the superhard point of a knife of rotating machinery instrument, the preformed body that provides according to one of any method of clause 1 to 12 is provided described method, and processes this preformed body to form superhard point of a knife.
14, the method for one of any aforementioned clause comprises processing preformed body to expose the surface of superhard structure, and this surface limits cutting edge and rake face.
15, the method for one of any aforementioned clause comprises that processing preformed body is to provide flute.
16, the superhard point of a knife that is used for fluted drill comprises and is connected to the PCD structure that sintered-carbide holds body, and this PCD structure comprises and has the gap mean free path and be at least about 0.05 micron and about 1.5 microns PCD material at the most; The standard deviation of mean free path is at least about 0.05 micron and about 1.5 microns at the most.
17, the superhard point of a knife that is used for fluted drill, wherein superhard structure comprises the PCD material, this PCD material comprises average-size and is at least about 0.1 micron and about 10 microns diamond crystals at the most, and its intermediate gap mean free path is less than 0.6 micron, and the standard deviation of mean free path is less than 0.9 micron.
18, clause 16 or 17 superhard point of a knife wherein hold body and comprise cemented tungsten carbide material, and this cemented tungsten carbide material comprises tungsten carbide crystal grain and cobalt, and the content of cobalt is at the most 7 percentage by weights of cemented carbide material.
19, clause 16 is to the superhard point of a knife of clause 18, wherein in the PCD material adamantine content be the PCD material at least about 90 percents by volume.
20, the superhard point of a knife that one of the method one of any according to any clause 1 to 15, or clause 16 to 19 is any, wherein superhard point of a knife is used for fluted drill or slotting cutter, for example ball end mill.
21, rotating machinery instrument, for example fluted drill or slotting cutter comprise the superhard point of a knife of making according to one of any method of clause 1 to 15, or comprise one of any superhard point of a knife of clause 16 to 19.
Understand in more detail hereinafter non-limiting example.
Embodiment
Provide by what cobalt cemented tungsten carbide formed and hold body, this cobalt cemented tungsten carbide comprises the Co of 8 percentage by weights and on average is of a size of about 6 microns tungsten carbide (WC) crystal grain.Hold body and have and roll conical general shape and suitable cylindrical base, as shown in Figure 3.The radius of curvature r at top that holds the working end of body is about 2.25mm, and cone angle κ is about 120 degree.The fluting that cuts out whole z shape by electric discharge machine processing (EDM) in body caves in, as shown in Fig. 2 B.
A pair of presintering PCD dish is provided.In the following way they are carried out preformed: in the presence of cobalt, under the pressure of about 5.5GPa and about 1300 degrees centigrade temperature, be sintered together with diamond crystals.PCD comprises the diamond crystals of about 90 percents by volume and the cobalt of about 10 percents by volume, and the average grain size of diamond crystals is about 6 microns.By EDM PCD dish is cut into shape that Fig. 2 B schematically illustrates and is formed at a pair of shaping PCD structure in the depression that holds body to be formed for inserting.
With the PCD structure with hold body and immerse to be contained in the weak solution of nitric acid that pH value in the vial is 1-3 and clean, it was placed ultra sonic bath 20 to 30 minutes at ambient temperature.The cobalt adhesion material that sintered-carbide holds in the body can be because of a large amount of dissolvings of this processing.Then in ethanol, wash the PCD structure and hold body, and carry out drying.
The PCD structure is inserted depression to form pre-laminate, make its pressure that stands about 5.5GPa and about 1450 degrees centigrade temperature to form integral sintered drill bit preform.
The drill bit preform of sintering can be described as comprising integral body and be bonded in sintered-carbide and hold intrinsic PCD vein, and has the following feature that observes:
Although-two PCD well-formeds are sintered together to form whole vein, the interface that can observe between them is the fine rule form;
-PCD vein and carbide hold the zone that interface between the body comprises enriched in cobalt, described cobalt in sintering step from holding body and also may oozing out from the PCD structure.Carbide particle is obvious at the interface zone of enriched in cobalt.
As if the quality of-PCD material sintering improves by sintering step, and this sintering step is actually the second ultra-high pressure sintering step that the PCD structure has stood.
Sharp instruments (pick tool) and the various exemplary that are connected assembling and the method that is connected them are above being described.It will be understood by those skilled in the art that and to change these embodiments and to revise, and do not break away from claimed the spirit and scope of the present invention.
Claims (15)
1. make the method for the preformed body of the superhard point of a knife that is used for the rotating machinery instrument, described method comprise make that the contact of the superhard structure of at least one sintered polycrystalline comprises sintered-carbide hold body forming the precompressed assembly, and make the precompressed assembly stand the thermodynamically stable pressure and temperature of superhard material to form the preformed body.
2. the method that requires such as claim 1, wherein the rotating machinery instrument is fluted drill.
3. such as the method for claim 1 or claim 2 requirement, be included in to hold to form in the body and cave in, this concave configuration is for holding the superhard structure of glomerocryst; And in depression, insert the superhard structure of glomerocryst to form the precompressed assembly.
4. as the described method of one of any aforementioned claim, wherein hold body and comprise cobalt cemented tungsten carbide, cobalt content at 1 percentage by weight in the scope of 7 percentage by weights.
5. such as one of any aforementioned claim described method, wherein superhard structure comprises polycrystalline diamond (PCD) material.
6. such as one of any aforementioned claim described method, wherein superhard structure comprises the PCD material, this PCD material comprises and has average-size and be at least about 0.1 micron and about 10 microns diamond crystals at the most, and its intermediate gap mean free path is less than 0.6 micron, and the standard deviation of mean free path is less than 0.9 micron.
7. as the described method of one of any aforementioned claim, be included in pH value at least 1 and at the most 3 the acid solution, or be the superhard structure of this glomerocryst of processing at least 10 the alkaline solution in the pH value.
8. such as one of any aforementioned claim described method, comprise that configuration holds body at least one support member to hold at least one superhard structure and to arrange in abutting connection with superhard structure and the surface that holds body, make the contact of the superhard structure of glomerocryst hold body, and support member is placed on superhard body structure surface and holds between the body surface to form the precompressed assembly.
9. method as claimed in claim 8, described depression has inclined surface and is configured to hold the superhard structure of glomerocryst and support member; The superhard structure of glomerocryst and support member are inserted in the depression to form the precompressed assembly; Support member is arranged between the superhard structure of glomerocryst and the depression inclined side surfaces; Inclined side surfaces is configured to can make support member with respect to the superhard structure lateral run-out of glomerocryst in response to the power that axially is applied to the precompressed assembly.
10. method as claimed in claim 8 or 9, comprise substantially non-reacted paper tinsel is provided, and substantially non-reacted paper tinsel is placed support member and superhard body structure surface or holds body surface, or the two and superhard body structure surface and hold between the body surface, to form the precompressed assembly; Make the precompressed assembly stand the thermodynamically stable pressure and temperature of superhard material; With remove support member.
11. the described method of one of any aforementioned claim comprises processing preformed body to expose the surface of superhard structure, this surface limits cutting edge and rake face.
12. the described method of one of any aforementioned claim comprises that processing preformed body is to provide flute.
13. be used for the superhard point of a knife of fluted drill, comprise being connected to the PCD structure that sintered-carbide holds body that this PCD structure comprises the gap mean free path and is at least about 0.05 micron and about 1.5 microns PCD material at the most; The standard deviation of mean free path is at least about 0.05 micron and about 1.5 microns at the most.
14. superhard point of a knife as claimed in claim 13 wherein holds body and comprises cemented tungsten carbide material, this cemented tungsten carbide material comprises tungsten carbide crystal grain and cobalt, and the content of cobalt is at the most 7 percentage by weights of cemented carbide material.
15. such as claim 13 or the described superhard point of a knife of claim 14, wherein adamantine content is at least 90 percents by volume of PCD material in the PCD material.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1000872.0 | 2010-01-20 | ||
| GBGB1000872.0A GB201000872D0 (en) | 2010-01-20 | 2010-01-20 | A method for making a superhard tip, superhard tips and tools comprising same |
| PCT/IB2011/050239 WO2011089555A2 (en) | 2010-01-20 | 2011-01-19 | Superhard body, tool and method for making same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102947027A true CN102947027A (en) | 2013-02-27 |
Family
ID=42045792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800068456A Pending CN102947027A (en) | 2010-01-20 | 2011-01-19 | Superhard body, tool and method for making same |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2525931A2 (en) |
| JP (1) | JP2013517384A (en) |
| KR (1) | KR20120115984A (en) |
| CN (1) | CN102947027A (en) |
| GB (1) | GB201000872D0 (en) |
| WO (1) | WO2011089555A2 (en) |
| ZA (1) | ZA201205220B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105188996A (en) * | 2013-02-28 | 2015-12-23 | 戴蒙得创新股份有限公司 | CVI bonded and coated PCBN to WC tool body |
| CN105765102A (en) * | 2013-11-22 | 2016-07-13 | 六号元素技术有限公司 | Polycrystalline chemical vapour deposited diamond tool parts and methods of fabricating, mounting, and using the same |
| CN109715324A (en) * | 2016-09-20 | 2019-05-03 | 本田技研工业株式会社 | PCD drill bit and its manufacturing method |
| CN111761317A (en) * | 2020-07-24 | 2020-10-13 | 马鞍山市华中冶金机械刀片有限公司 | Alloy blade for continuous casting and rolling of billet and production process thereof |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201109864D0 (en) | 2011-06-13 | 2011-07-27 | Element Six Ltd | Blank bodies for drill tips and methods for making same |
| JP6029004B2 (en) * | 2011-11-28 | 2016-11-24 | 三菱マテリアル株式会社 | PCD drill |
| CN103128345B (en) * | 2011-11-28 | 2017-03-01 | 三菱综合材料株式会社 | PCD drill bit |
| JP5969106B1 (en) * | 2015-12-28 | 2016-08-10 | 日進工具株式会社 | End mill and manufacturing method thereof |
| JPWO2020196611A1 (en) * | 2019-03-26 | 2020-10-01 | ||
| WO2021069987A1 (en) * | 2019-10-11 | 2021-04-15 | Varel International Ind., L.L.C. | Manufacture of polycrystalline superhard cutter utilizing internal wireframe |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4944772A (en) * | 1988-11-30 | 1990-07-31 | General Electric Company | Fabrication of supported polycrystalline abrasive compacts |
| US5127923A (en) * | 1985-01-10 | 1992-07-07 | U.S. Synthetic Corporation | Composite abrasive compact having high thermal stability |
| US5232320A (en) * | 1990-11-26 | 1993-08-03 | Klaus Tank | Cutting insert for a rotary cutting tool |
| US5580196A (en) * | 1991-08-08 | 1996-12-03 | Habit Diamond Limited | Wear resistant tools |
| CN1269273A (en) * | 1999-04-07 | 2000-10-11 | 桑德维克公司 | Materials based on porous cubic crystal series boron nitride for post production of cutting tools and preparation method thereof |
| US20060266558A1 (en) * | 2005-05-26 | 2006-11-30 | Smith International, Inc. | Thermally stable ultra-hard material compact construction |
| CN1922382A (en) * | 2003-12-11 | 2007-02-28 | 六号元素(控股)公司 | Polycrystalline diamond abrasive elements |
| US20080085407A1 (en) * | 2006-10-10 | 2008-04-10 | Us Synthetic Corporation | Superabrasive elements, methods of manufacturing, and drill bits including same |
| CN101273151A (en) * | 2005-08-16 | 2008-09-24 | 六号元素（产品）（控股）公司 | Fine grained polycrystalline abrasive material |
| US20080247899A1 (en) * | 2007-04-03 | 2008-10-09 | Cho H Sam | Contoured PCD and PCBN for twist drill tips and end mills and methods of forming the same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2220929C2 (en) | 1998-07-22 | 2004-01-10 | Сумитомо Электрик Индастриз, Лтд. | Sintered blanc from boron nitride with cubic lattice (options) |
| US9624135B2 (en) | 2004-09-23 | 2017-04-18 | Antionette Can | Polycrystalline abrasive materials and method of manufacture |
| EP2010686B1 (en) | 2006-03-29 | 2017-06-28 | Element Six Abrasives S.A. | Polycrystalline abrasive compacts |
-
2010
- 2010-01-20 GB GBGB1000872.0A patent/GB201000872D0/en not_active Ceased
-
2011
- 2011-01-19 WO PCT/IB2011/050239 patent/WO2011089555A2/en active Application Filing
- 2011-01-19 EP EP11703047A patent/EP2525931A2/en not_active Withdrawn
- 2011-01-19 CN CN2011800068456A patent/CN102947027A/en active Pending
- 2011-01-19 JP JP2012549451A patent/JP2013517384A/en active Pending
- 2011-01-19 KR KR1020127019340A patent/KR20120115984A/en not_active Application Discontinuation
-
2012
- 2012-07-13 ZA ZA2012/05220A patent/ZA201205220B/en unknown
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5127923A (en) * | 1985-01-10 | 1992-07-07 | U.S. Synthetic Corporation | Composite abrasive compact having high thermal stability |
| US4944772A (en) * | 1988-11-30 | 1990-07-31 | General Electric Company | Fabrication of supported polycrystalline abrasive compacts |
| US5232320A (en) * | 1990-11-26 | 1993-08-03 | Klaus Tank | Cutting insert for a rotary cutting tool |
| US5580196A (en) * | 1991-08-08 | 1996-12-03 | Habit Diamond Limited | Wear resistant tools |
| CN1269273A (en) * | 1999-04-07 | 2000-10-11 | 桑德维克公司 | Materials based on porous cubic crystal series boron nitride for post production of cutting tools and preparation method thereof |
| CN1922382A (en) * | 2003-12-11 | 2007-02-28 | 六号元素(控股)公司 | Polycrystalline diamond abrasive elements |
| US20060266558A1 (en) * | 2005-05-26 | 2006-11-30 | Smith International, Inc. | Thermally stable ultra-hard material compact construction |
| CN101273151A (en) * | 2005-08-16 | 2008-09-24 | 六号元素（产品）（控股）公司 | Fine grained polycrystalline abrasive material |
| US20080085407A1 (en) * | 2006-10-10 | 2008-04-10 | Us Synthetic Corporation | Superabrasive elements, methods of manufacturing, and drill bits including same |
| US20080247899A1 (en) * | 2007-04-03 | 2008-10-09 | Cho H Sam | Contoured PCD and PCBN for twist drill tips and end mills and methods of forming the same |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105188996A (en) * | 2013-02-28 | 2015-12-23 | 戴蒙得创新股份有限公司 | CVI bonded and coated PCBN to WC tool body |
| CN105765102A (en) * | 2013-11-22 | 2016-07-13 | 六号元素技术有限公司 | Polycrystalline chemical vapour deposited diamond tool parts and methods of fabricating, mounting, and using the same |
| CN109715324A (en) * | 2016-09-20 | 2019-05-03 | 本田技研工业株式会社 | PCD drill bit and its manufacturing method |
| CN109715324B (en) * | 2016-09-20 | 2020-09-22 | 本田技研工业株式会社 | PCD drill bit and manufacturing method thereof |
| CN111761317A (en) * | 2020-07-24 | 2020-10-13 | 马鞍山市华中冶金机械刀片有限公司 | Alloy blade for continuous casting and rolling of billet and production process thereof |
| CN111761317B (en) * | 2020-07-24 | 2022-01-14 | 马鞍山市华中冶金机械刀片有限公司 | Alloy blade for continuous casting and rolling of billet and production process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011089555A3 (en) | 2012-01-05 |
| JP2013517384A (en) | 2013-05-16 |
| KR20120115984A (en) | 2012-10-19 |
| WO2011089555A2 (en) | 2011-07-28 |
| EP2525931A2 (en) | 2012-11-28 |
| GB201000872D0 (en) | 2010-03-10 |
| ZA201205220B (en) | 2013-09-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102947027A (en) | Superhard body, tool and method for making same | |
| US20110176879A1 (en) | Superhard body, tool and method for making same | |
| CN102858482B (en) | Super-hard cutter bits, its manufacture method and comprise its instrument | |
| CN103038380B (en) | Polycrystalline diamond | |
| US8679206B2 (en) | Graded drilling cutters | |
| US9468980B2 (en) | Contoured PCD and PCBN segments for cutting tools containing such segments | |
| US20110174549A1 (en) | Superhard insert and an earth boring tool comprising same | |
| US20110171414A1 (en) | Sacrificial Catalyst Polycrystalline Diamond Element | |
| CN103619516B (en) | Fluted drill apex point, for manufacture it precursor structure and for the method manufactured and use it | |
| KR19990083543A (en) | A polycrystal diamond tool | |
| EP2768994A2 (en) | Polycrystalline diamond compacts, related products, and methods of manufacture | |
| US20170361424A1 (en) | Superhard components and powder metallurgy methods of making the same | |
| US20150165590A1 (en) | Superhard constructions and methods of making same | |
| US20180021924A1 (en) | Super hard components and powder metallurgy methods of making the same | |
| WO2014033168A1 (en) | Polycrystalline diamond construction & method of making | |
| CN103328151B (en) | Method of making a bit for a rotary drill | |
| US20190134783A1 (en) | Superhard constructions & methods of making same | |
| CN110267758A (en) | Superhard construction and its manufacturing method | |
| US20190344350A1 (en) | Superhard constructions & methods of making same | |
| US10829999B2 (en) | Polycrystalline diamond compacts having interstitial diamond grains and methods of making the same | |
| CN110168188A (en) | The impact tip of digging tool | |
| US20210316362A1 (en) | Superhard constructions & methods of making same | |
| JP2023505673A (en) | Iron gradients, blanks, cutters, and cutting tools including them in polycrystalline diamond compacts, and methods of manufacture | |
| CN106029608A (en) | Polycrystalline super hard construction and method of making | |
| CN106488895A (en) | The method manufacturing superhard article |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130227 |