CN104400672A - Metallic bond diamond grinding wheel - Google Patents
Metallic bond diamond grinding wheel Download PDFInfo
- Publication number
- CN104400672A CN104400672A CN201410594581.6A CN201410594581A CN104400672A CN 104400672 A CN104400672 A CN 104400672A CN 201410594581 A CN201410594581 A CN 201410594581A CN 104400672 A CN104400672 A CN 104400672A
- Authority
- CN
- China
- Prior art keywords
- powder
- emery wheel
- base substrate
- diamond
- weight
- 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.)
- Granted
Links
- 239000010432 diamond Substances 0.000 title claims abstract description 58
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 58
- 238000000227 grinding Methods 0.000 title abstract description 28
- 239000000843 powder Substances 0.000 claims abstract description 77
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 238000004873 anchoring Methods 0.000 claims description 30
- 239000003795 chemical substances by application Substances 0.000 claims description 30
- 239000002184 metal Substances 0.000 claims description 30
- 239000002245 particle Substances 0.000 claims description 20
- 239000000428 dust Substances 0.000 claims description 18
- 238000007493 shaping process Methods 0.000 abstract description 9
- 229910001651 emery Inorganic materials 0.000 description 45
- 239000000758 substrate Substances 0.000 description 32
- 238000005245 sintering Methods 0.000 description 25
- 150000001875 compounds Chemical class 0.000 description 16
- 238000002156 mixing Methods 0.000 description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 8
- 239000000839 emulsion Substances 0.000 description 8
- 238000007731 hot pressing Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 5
- 229910001573 adamantine Inorganic materials 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 239000006061 abrasive grain Substances 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
- B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
- B24D3/10—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements for porous or cellular structure, e.g. for use with diamonds as abrasives
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent
Abstract
The invention discloses a metallic bond diamond grinding wheel, which is made from the following raw materials: 50-60% by weight of diamond powder, 4-11% by weight of Sn powder, 12-18% by weight of Cu powder, 15-25% by weight of Al powder, and 0.5-1.1% by weight of La powder. The metallic bond diamond grinding wheel provided by the invention has the advantages of good mechanical property, good self-sharpening capability, high strength of controlling diamond, good shaping capability and long service life.
Description
Technical field
The present invention relates to grinding tool abrasive grinding technical field, particularly a kind of metal anchoring agent diamond wheel.
Background technology
The diamond of current most Prof. Du Yucang is all Powdered or tiny graininess, high accuracy, high-efficiency grinding processing is carried out in order to utilize diamond, diamond abrasive grain bonding is got up and makes the grinding tool with some strength and shape by the material that usual employing is referred to as bonding agent, carries out grinding so that be arranged on various grinding machine.With other abrasive material as compared with corundum, carborundum, when carrying out grinding with skive, have the following advantages: grinding efficiency is high; Wearability is high, and abrasive particle itself consumes seldom, has very high service life, particularly obvious during, crisp workpiece hard in grinding; Hardness of the abrasive grain and wearability high, abrasive particle can keep sharp for a long time, easily cuts workpiece, realizes low-stress grinding; The workpiece accuracy of grinding is high, surface quality good.Skive application has penetrated into the every field such as machining, automobile making, Aero-Space, biology, medical apparatus, electronic information, building, traffic, geological mining, art, new material.
Although metal anchoring agent diamond wheel intensity is high, working face geometry retentivity is good, the life-span is long, shock-resistant, self-sharpening is bad, efficiency is low, cannot meet the needs continuing processing.At present, in order to improve skive metallic bond to adamantine hold and adamantine self-sharpening, the research direction of this area mainly concentrates on the exploitation that diamond bonding agent is newly filled a prescription.
Summary of the invention
Technical problem to be solved by this invention is to provide metal anchoring agent diamond wheel, and this emery wheel has good mechanical property and self-sharpening, high to adamantine hold, good moldability, long service life.
For achieving the above object, the present invention adopts following technical scheme:
Metal anchoring agent diamond wheel, be made up of the raw material of following percentage by weight:
Preferably, metal anchoring agent diamond wheel of the present invention, be made up of the raw material of following percentage by weight:
The particle diameter of above-mentioned diamond dust is 10 ~ 80 μm.
The particle diameter of above-mentioned Sn powder, Cu powder, Al powder, La powder is 50 ~ 150 μm.
The preparation method of metal anchoring agent diamond wheel of the present invention is as follows:
(1) batch mixing: get diamond dust by formula, Sn powder, Cu powder, Al powder, La powder put into mixer, adds the acrylic emulsion mixing 20 ~ 24 hours of 1% ~ 2% of raw material gross weight in mixer, obtains compound;
(2) shaping: evenly being dropped into gently by compound in mould and to strike off, insert the hot pressing of hydraulic press cover half, temperature is 250 ~ 260 DEG C, and pressure is 120 ~ 125MPa, pressurize 2 ~ 3 hours, after cooling and mould unloading emery wheel base substrate;
(3) sinter: emery wheel base substrate is inserted in sintering furnace and sinters, first emery wheel base substrate is heated to 200 ~ 300 DEG C and is incubated 30 ~ 40min during sintering carry out pre-reaction, be then heated to 730 ~ 830 DEG C and be incubated 10 ~ 30min, be cooled to room temperature and take out;
(4) process: the emery wheel base substrate after sintering is processed on lathe and grinding machine;
(5) pack, warehouse-in.
Beneficial effect of the present invention is:
In formula of the present invention, diamond dust is as the main body of emery wheel; Sn powder has low melting point, can reduce grinding wheel base body sintering temperature and time; Add Cu powder, make emery wheel have good heat dispersion, improve the strength and stiffness of emery wheel; Adding Al powder, while improving the heat-resisting and heat dispersion of grinding wheel base body, ensure good grindability energy, preventing emery wheel matrix and absorption surface and the burn that causes or scuffing when wearing away fast; Add La powder, effectively can improve the mechanical property of emery wheel carcass, improve and strengthen carcass material to adamantine adhesive strength, this formula is collaborative, makes emery wheel have good mechanical property and self-sharpening, high to adamantine hold, good moldability, long service life.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described, but the present invention is not limited to these embodiments.
Embodiment 1
Metal anchoring agent diamond wheel, be made up of the raw material of following percentage by weight:
The particle diameter of above-mentioned diamond dust is 10 μm.
The particle diameter of above-mentioned Sn powder, Cu powder, Al powder, La powder is 50 μm.
The preparation process of metal anchoring agent diamond wheel is as follows:
(1) batch mixing: get diamond dust by formula, Sn powder, Cu powder, Al powder, La powder put into mixer, the acrylic emulsion adding 1% of raw material gross weight in mixer mixes 20 hours, obtains compound;
(2) shaping: evenly being dropped into gently by compound in mould and to strike off, insert the hot pressing of hydraulic press cover half, temperature is 250 DEG C, and pressure is 120MPa, pressurize 2 hours, after cooling and mould unloading emery wheel base substrate;
(3) sinter: emery wheel base substrate is inserted in sintering furnace and sinters, first emery wheel base substrate is heated to 200 DEG C and is incubated 40min during sintering carry out pre-reaction, be then heated to 730 DEG C and be incubated 30min, be cooled to room temperature and take out;
(4) process: the emery wheel base substrate after sintering is processed on lathe and grinding machine;
(5) pack, warehouse-in.
Embodiment 2
Metal anchoring agent diamond wheel, be made up of the raw material of following percentage by weight:
The particle diameter of above-mentioned diamond dust is 25m.
The particle diameter of above-mentioned Sn powder, Cu powder, Al powder, La powder is 65 μm.
The preparation process of metal anchoring agent diamond wheel is as follows:
(1) batch mixing: get diamond dust by formula, Sn powder, Cu powder, Al powder, La powder put into mixer, the acrylic emulsion adding 1.15% of raw material gross weight in mixer mixes 21 hours, obtains compound;
(2) shaping: evenly being dropped into gently by compound in mould and to strike off, insert the hot pressing of hydraulic press cover half, temperature is 252 DEG C, and pressure is 121MPa, pressurize 2.5 hours, after cooling and mould unloading emery wheel base substrate;
(3) sinter: emery wheel base substrate is inserted in sintering furnace and sinters, first emery wheel base substrate is heated to 215 DEG C and is incubated 38min during sintering carry out pre-reaction, be then heated to 745 DEG C and be incubated 27min, be cooled to room temperature and take out;
(4) process: the emery wheel base substrate after sintering is processed on lathe and grinding machine;
(5) pack, warehouse-in.
Embodiment 3
Metal anchoring agent diamond wheel, be made up of the raw material of following percentage by weight:
The particle diameter of above-mentioned diamond dust is 35 μm.
The particle diameter of above-mentioned Sn powder, Cu powder, Al powder, La powder is 80 μm.
The preparation process of metal anchoring agent diamond wheel is as follows:
(1) batch mixing: get diamond dust by formula, Sn powder, Cu powder, Al powder, La powder put into mixer, the acrylic emulsion adding 1.4% of raw material gross weight in mixer mixes 22 hours, obtains compound;
(2) shaping: evenly being dropped into gently by compound in mould and to strike off, insert the hot pressing of hydraulic press cover half, temperature is 254 DEG C, and pressure is 122MPa, pressurize 3 hours, after cooling and mould unloading emery wheel base substrate;
(3) sinter: emery wheel base substrate is inserted in sintering furnace and sinters, first emery wheel base substrate is heated to 230 DEG C and is incubated 37min during sintering carry out pre-reaction, be then heated to 760 DEG C and be incubated 23min, be cooled to room temperature and take out;
(4) process: the emery wheel base substrate after sintering is processed on lathe and grinding machine;
(5) pack, warehouse-in.
Embodiment 4
Metal anchoring agent diamond wheel, be made up of the raw material of following percentage by weight:
The particle diameter of above-mentioned diamond dust is 45 μm.
The particle diameter of above-mentioned Sn powder, Cu powder, Al powder, La powder is 100 μm.
The preparation process of metal anchoring agent diamond wheel is as follows:
(1) batch mixing: get diamond dust by formula, Sn powder, Cu powder, Al powder, La powder put into mixer, the acrylic emulsion adding 1.5% of raw material gross weight in mixer mixes 23 hours, obtains compound;
(2) shaping: evenly being dropped into gently by compound in mould and to strike off, insert the hot pressing of hydraulic press cover half, temperature is 255 DEG C, and pressure is 123MPa, pressurize 2 hours, after cooling and mould unloading emery wheel base substrate;
(3) sinter: emery wheel base substrate is inserted in sintering furnace and sinters, first emery wheel base substrate is heated to 250 DEG C and is incubated 35min during sintering carry out pre-reaction, be then heated to 780 DEG C and be incubated 20min, be cooled to room temperature and take out;
(4) process: the emery wheel base substrate after sintering is processed on lathe and grinding machine;
(5) pack, warehouse-in.
Embodiment 5
Metal anchoring agent diamond wheel, be made up of the raw material of following percentage by weight:
The particle diameter of above-mentioned diamond dust is 55 μm.
The particle diameter of above-mentioned Sn powder, Cu powder, Al powder, La powder is 115 μm.
The preparation process of metal anchoring agent diamond wheel is as follows:
(1) batch mixing: get diamond dust by formula, Sn powder, Cu powder, Al powder, La powder put into mixer, the acrylic emulsion adding 1.65% of raw material gross weight in mixer mixes 24 hours, obtains compound;
(2) shaping: evenly being dropped into gently by compound in mould and to strike off, insert the hot pressing of hydraulic press cover half, temperature is 257 DEG C, and pressure is 124MPa, pressurize 2.5 hours, after cooling and mould unloading emery wheel base substrate;
(3) sinter: emery wheel base substrate is inserted in sintering furnace and sinters, first emery wheel base substrate is heated to 265 DEG C and is incubated 36min during sintering carry out pre-reaction, be then heated to 795 DEG C and be incubated 17min, be cooled to room temperature and take out;
(4) process: the emery wheel base substrate after sintering is processed on lathe and grinding machine;
(5) pack, warehouse-in.
Embodiment 6
Metal anchoring agent diamond wheel, be made up of the raw material of following percentage by weight:
The particle diameter of above-mentioned diamond dust is 65 μm.
The particle diameter of above-mentioned Sn powder, Cu powder, Al powder, La powder is 130 μm.
The preparation process of metal anchoring agent diamond wheel is as follows:
(1) batch mixing: get diamond dust by formula, Sn powder, Cu powder, Al powder, La powder put into mixer, the acrylic emulsion adding 1.85% of raw material gross weight in mixer mixes 21 hours, obtains compound;
(2) shaping: evenly being dropped into gently by compound in mould and to strike off, insert the hot pressing of hydraulic press cover half, temperature is 258 DEG C, and pressure is 125MPa, pressurize 3 hours, after cooling and mould unloading emery wheel base substrate;
(3) sinter: emery wheel base substrate is inserted in sintering furnace and sinters, first emery wheel base substrate is heated to 280 DEG C and is incubated 33min during sintering carry out pre-reaction, be then heated to 810 DEG C and be incubated 14min, be cooled to room temperature and take out;
(4) process: the emery wheel base substrate after sintering is processed on lathe and grinding machine;
(5) pack, warehouse-in.
Embodiment 7
Metal anchoring agent diamond wheel, be made up of the raw material of following percentage by weight:
The particle diameter of above-mentioned diamond dust is 80 μm.
The particle diameter of above-mentioned Sn powder, Cu powder, Al powder, La powder is 150 μm.
The preparation process of metal anchoring agent diamond wheel is as follows:
(1) batch mixing: get diamond dust by formula, Sn powder, Cu powder, Al powder, La powder put into mixer, the acrylic emulsion adding 2% of raw material gross weight in mixer mixes 23 hours, obtains compound;
(2) shaping: evenly being dropped into gently by compound in mould and to strike off, insert the hot pressing of hydraulic press cover half, temperature is 260 DEG C, and pressure is 123MPa, pressurize 2.5 hours, after cooling and mould unloading emery wheel base substrate;
(3) sinter: emery wheel base substrate is inserted in sintering furnace and sinters, first emery wheel base substrate is heated to 300 DEG C and is incubated 30min during sintering carry out pre-reaction, be then heated to 830 DEG C and be incubated 10min, be cooled to room temperature and take out;
(4) process: the emery wheel base substrate after sintering is processed on lathe and grinding machine;
(5) pack, warehouse-in.
Test example
The performance comparison of the embodiment of the present invention 2,4,6 metal anchoring agent diamond wheel is in table 1 and table 2:
The result of the test of table 1 embodiment 2,4,6 metal anchoring agent diamond wheel carcass material bending strength and impact flexibility
The result of the test of table 2 embodiment 2,4,6 metal anchoring agent diamond wheel partial properties
Note: (1) self-sharpening is emery wheel diamond cutting edge quantity after grinding.(2) shape-retaining ability is wheel grinding 1cm carbide alloy waste (um).
As seen from Table 1, carcass material bending strength and the impact flexibility of embodiment 2,4,6 are all better than compares existing product, show at metal anchoring agent diamond wheel formula, the mechanical properties such as emery wheel carcass material bending strength, impact flexibility can be improved, thus improve the mechanical property of emery wheel.
As can be seen from Table 2, compared to existing emery wheel, the self-sharpening of embodiment 2,4,6 emery wheel is good, and grinding efficiency is high, and linear velocity is fast, shows that this metal anchoring agent diamond wheel formula can improve emery wheel self-sharpening, and improve grinding efficiency, increase line speed, saves time.
Claims (4)
1. metal anchoring agent diamond wheel, is characterized in that, is made up of the raw material of following percentage by weight:
2. metal anchoring agent diamond wheel according to claim 1, is characterized in that, is made up of the raw material of following percentage by weight:
3. metal anchoring agent diamond wheel according to claim 1 and 2, is characterized in that: the particle diameter of described diamond dust is 10 ~ 80 μm.
4. metal anchoring agent diamond wheel according to claim 1 and 2, is characterized in that: the particle diameter of described Sn powder, Cu powder, Al powder, La powder is 50 ~ 150 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410594581.6A CN104400672B (en) | 2014-10-29 | 2014-10-29 | Metallic bond diamond grinding wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410594581.6A CN104400672B (en) | 2014-10-29 | 2014-10-29 | Metallic bond diamond grinding wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104400672A true CN104400672A (en) | 2015-03-11 |
| CN104400672B CN104400672B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410594581.6A Active CN104400672B (en) | 2014-10-29 | 2014-10-29 | Metallic bond diamond grinding wheel |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985536A (en) * | 2015-08-04 | 2015-10-21 | 蓬莱市超硬复合材料有限公司 | Metal-bonded diamond grinding wheel |
| CN105058248A (en) * | 2015-08-04 | 2015-11-18 | 蓬莱市超硬复合材料有限公司 | Compound metal and ceramic bonding agent diamond grinding wheel |
| CN105252428A (en) * | 2015-09-23 | 2016-01-20 | 滁州职业技术学院 | Nanometer ceramic bond diamond grinding wheel containing polyester fibers and preparation method of grinding wheel |
| CN106625296A (en) * | 2016-11-29 | 2017-05-10 | 磐维科技（青岛）有限公司 | Diamond grinding wheel |
| CN107160297A (en) * | 2016-03-07 | 2017-09-15 | 河源市树熊超硬磨具有限公司 | A kind of touch-screen glass grinding diamond grinding head and preparation method thereof |
| CN108321260A (en) * | 2017-12-30 | 2018-07-24 | 苏州赛尔科技有限公司 | Led epitaxial wafer grinding wheel and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109333386A (en) * | 2018-11-07 | 2019-02-15 | 智慧双创(深圳)科技有限公司 | A kind of self-sharpening diamond grinding wheel and its preparation process |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104985536A (en) * | 2015-08-04 | 2015-10-21 | 蓬莱市超硬复合材料有限公司 | Metal-bonded diamond grinding wheel |
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| CN105252428A (en) * | 2015-09-23 | 2016-01-20 | 滁州职业技术学院 | Nanometer ceramic bond diamond grinding wheel containing polyester fibers and preparation method of grinding wheel |
| CN107160297A (en) * | 2016-03-07 | 2017-09-15 | 河源市树熊超硬磨具有限公司 | A kind of touch-screen glass grinding diamond grinding head and preparation method thereof |
| CN107160297B (en) * | 2016-03-07 | 2019-03-12 | 河源市树熊超硬磨具有限公司 | A kind of touched panel glass grinding diamond grinding head and preparation method thereof |
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| CN106625296B (en) * | 2016-11-29 | 2018-07-03 | 磐维科技（青岛）有限公司 | A kind of metal-bonded diamond emery wheel |
| CN108321260A (en) * | 2017-12-30 | 2018-07-24 | 苏州赛尔科技有限公司 | Led epitaxial wafer grinding wheel and preparation method thereof |
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| CN104400672B (en) | 2017-02-22 |
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