CN103551988A - Preparation method for compression-molded flat wheel comprising gridded sisal hemp back cover - Google Patents
Preparation method for compression-molded flat wheel comprising gridded sisal hemp back cover Download PDFInfo
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- CN103551988A CN103551988A CN201310554405.5A CN201310554405A CN103551988A CN 103551988 A CN103551988 A CN 103551988A CN 201310554405 A CN201310554405 A CN 201310554405A CN 103551988 A CN103551988 A CN 103551988A
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- abrasive material
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Abstract
The invention discloses a preparation method for a compression-molded flat wheel comprising a gridded sisal hemp back cover, which includes the following steps: abrasive, hollow microspheres and binder are uniformly mixed, pressed in a mould and heated to be solidified to form a grinding body; and binder is used for binding the grinding body and the gridded sisal hemp back cover into a whole body, so that the compression-molded flat wheel is formed. By regulating the usage of the hollow microspheres and the abrasive, the grinding effect of the compression-molded flat wheel can be regulated.
Description
Technical field
The preparation method who the present invention relates to a kind of compression molding face wheel containing grid sisal hemp back of the body lid, belongs to grinding tool field.
Background technology
The various face wheels of current making are to arrange after moulding and bond and form by rule with emery cloth sheet substantially, are not integrated connection between emery cloth sheet, and the fabricbase of emery cloth can not participate in grinding, and the grinding life-span is short.
General resin bond wheel (bonded abrasive tool) is mainly to be formed through mixing, compression molding, heat hardening by abrasive material, resin adhesive, and the use of this class emery wheel exists such as defects such as the heating of the large cutting force of needs, workpiece are serious.
Pore in porous grinding wheel (bonded abrasive tool) be generally in cure process by fill can be at the temperature higher than more than 130 degree the filler (as walnut shell, refined naphthalene etc.) of burn off (being carbonization) burn and form.Thereby but natural fiber also can lose efficacy under this operating mode in carbonization.
Summary of the invention
For above-mentioned technical problem, the object of the present invention is to provide a kind of preparation method of the new compression molding face wheel containing grid sisal hemp back of the body lid.
Above-mentioned purpose of the present invention is achieved by the following technical solution: a kind of preparation method of the new compression molding face wheel containing grid sisal hemp back of the body lid, comprises the steps:
1) after being mixed to rear mold pressing, abrasive material, tiny balloon and binding agent be heated and cured into grinding body;
2) grinding body and grid sisal hemp back of the body lid are bonded to an integral body with binding agent, form compression molding face wheel.
Technical process of the present invention is shown in following order: batch mixing → blowing → mold pressing → solidifying → demoulding → drip glue → dress grid sisal hemp to carry on the back lid → solidify → packing.
In the present invention, described tiny balloon has the characteristic of low-density, high-ratio surface, and its hollow space can hold a large amount of guest molecules or large scale object, the tiny balloon that the present invention adopts includes but not limited to glass tiny balloon, resin tiny balloon or macromolecule tiny balloon, ceramic hollow microballoon; The diameter 20um-10000um of described tiny balloon.
In the present invention, described abrasive material refers to sharp keen, hard, in order to the material of the softer material surface of grinding.Described abrasive material can be natural abrasive, includes but not limited to natural emery, Naxas emery, garnet and natural diamond etc.; Also can be artificial abrasive material, include but not limited to brown corundum abrasive, white fused alumina abrasive material, single alundum abrasive material, black silicon carbide grain, green silicon carbide abrasive material, cubic silicon carbide abrasive material, cerium silicon carbide abrasive material, boron carbide, diamond and cubic boron nitride etc., and the recovery sand of vitrified abrasive, resin wheel etc. etc.
In the present invention, described bonding agent can be phenolic resins, urea aldehyde, melamine resin, epoxy resin or inorganic binder etc., also can be phenolic resin modified, the phenolic aldehyde that comprises the modifications such as urea aldehyde, melamine resin, epoxy, acrylic acid, consumption of binder is raw material total mass ratio 20～50%.
In the present invention, the consumption of described tiny balloon and abrasive material can be adjusted according to actual needs, and the consumption of tiny balloon is the 1-50% of abrasive material volume.Can be 1%, 10.7%, 15%, 20%, 25%, 30%, 35%, 40%, 45% etc.
Fig. 1 shows the typical structure of compression molding face wheel.Grinding body is carried on the grid sisal hemp back of the body and covers.During use, grinding body participates in grinding and consumes self.Grid sisal hemp back of the body lid is for support grinding body transferring power.
Fig. 2 is the microstructure schematic diagram of compression molding face wheel.Binding agent is jointly combined in securely the grid sisal hemp back of the body by abrasive material and tiny balloon and covers.Fig. 3 is depicted as another kind of microstructure schematic diagram, and difference is to have increased one deck grid sisal hemp cloth in the middle of grinding body.
The present invention also provides the preparation method of the another kind of new compression molding face wheel containing grid sisal hemp back of the body lid, comprises the steps:
1) put after abrasive material, tiny balloon are mixed with binding agent the grid sisal hemp back of the body cover together with mold pressing;
2) be heating and curing and form compression molding face wheel.
The technical process of said method is: the batch mixing → blowing → dress grid sisal hemp back of the body lid → mold pressing → solidify → demoulding → packing.
In the present invention, preferably adopt twice of hydraulic press compressing; Pressurization is for the first time toasted 2h at suppressing latter 80 ℃, and pressurization is for the second time toasted 4-6h at suppressing latter 120 ℃.
Accompanying drawing explanation
Fig. 1 is the typical structure of compression molding face wheel of the present invention.
Fig. 2 is the microstructure schematic diagram of compression molding face wheel.
Fig. 3 is another kind of microstructure schematic diagram.
Fig. 4 is the shaping mould that is heating and curing of the present invention.
Fig. 5 is compression molding face wheel stereogram of the present invention.
Fig. 6 is compression molding face wheel sectional schematic diagram of the present invention.
Fig. 7 is face wheel sample 1-3 tiny balloon and the variation of abrasive material volume ratio and grinding ratio, grinding efficiency relation.
Fig. 8 is that face wheel sample 1-3 tiny balloon and abrasive material volume ratio change and exemplar surface roughness relation.
Fig. 9 is that face wheel sample 4-6 tiny balloon and abrasive material volume ratio meet or exceed critical value and grinding ratio, grinding efficiency relation.
Figure 10 is that face wheel sample 4-6 tiny balloon and abrasive material volume ratio meet or exceed critical value and exemplar surface roughness relation.
Figure 11 is the embodiment of the present invention 1 process chart.
In figure 1 for grid sisal hemp back of the body lid, 2 be grinding body, 3 for tiny balloon, 4 for binding agent, 5 for abrasive material, 6 for grid sisal hemp cloth, 7 for abrasive material, binding agent and tiny balloon mixture, 8 be metal mold cavity mould.
The specific embodiment
Formula
1, sample production
11 batch mixings: in ratio in each style formula in formula 1, take successively abrasive material, then add coarse whiting (can be calcined kaolin etc.), stir; Under stirring, add the tiny balloon of handling well, guarantee to stir; Finally under stirring, add modification liquid phenolic resin, stir.Have suffered batch mixing process, surely will guarantee that batch mixing evenly (can not occur caking, clustering phenomena).
2.2 compactings are with curing: press shaping density 2.3-2.5g/cm
3, according to done rubbing down wheel volume size, calculate weighing.Load weighted material is divided in die cavity uniformly (as pressed method two, first will ask back of the body lid (grid sisal hemp back of the body lid) to pack die cavity into, then the material of 1/2 amount is spread out in uniformly to the holder back of the body and covers, then put into grid sisal hemp cloth, then remaining material is spread out on grid sisal hemp cloth uniformly).After dress mould completes, with hydraulic press, pressurize for the first time compressing.Then release is toasted after 2h at 80 ℃, pressurizes for the second time after compacting, toasts after 4-6h (face wheel solidifies 4h, thousand pages of curing 6h of wheel) at 120 ℃, come out of the stove after being slowly down to room temperature, and mould unloading.
2.3 tests are made style and are: the face wheel of plane rubbing down: overall diameter is 4 inches (101.6-103mm), and internal diameter is 55mm, and aperture is 16mm, thickness 6-8mm);
Detect and test data contrast:
1, method of testing explanation: this grinding detects material and is: the face wheel of plane rubbing down: 45# steel plate (the thick * 10mm of the wide 100mm* of long 200mm*); Under identical grinding condition, (grinding material, rubbing down wheel bear pressure, and rotational line speed (60m/s) is all identical respectively.
2, each index calculating method explanation:
2.1 grinding efficiencies: refer to that the worn amount of material is divided by the grinding time, the g/min of unit.
2.2 grinding ratios: the worn amount of material of exemplar and the ratio of rubbing down foot wheel abrasion amount.
2.3 surface roughnesses: refer to less spacing and small peak valley unevenness that finished surface has, the um of unit.Surface roughness is less, and surface is more smooth.With two-tube light-section microscope, measure.
Total grinding testing time is 30min, and every 10min is one section, and minute three sections of collection data, ask arithmetic mean of instantaneous value.
3, Data Collection
3.1 use formulas 1 do face wheel (sample 1, sample 2, sample 3) for plane rubbing down with conventional with grain 60#(common corundum) 4 inches of face wheels contrast:
Note: tiny balloon and abrasive material volume ratio are: sample 4:10.7% sample 5:15% sample 6:20%.
Table 1
Face wheel sample 1-3 tiny balloon and the variation of abrasive material volume ratio and grinding ratio, grinding efficiency relation are as shown in Figure 7; Face wheel sample 1-3 tiny balloon and the variation of abrasive material volume ratio and exemplar surface roughness relation are as shown in Figure 8.
Tiny balloon and abrasive material volume ratio are risen to: sample 7:30% sample 8:40% sample 9:50%, when exploration tiny balloon and abrasive material volume ratio meet or exceed critical value, the rubbing down effect of wheel.
Table 2
Face wheel sample 4-6 tiny balloon and abrasive material volume ratio meet or exceed critical value and grinding ratio, grinding efficiency relation as shown in Figure 9; Face wheel sample 4-6 tiny balloon and abrasive material volume ratio meet or exceed critical value and exemplar surface roughness relation as shown in figure 10.
3.3 face wheel styles 6, with same specification nylon wheel, the contrast of sisal hemp wheel grinding index.
Table 3
Test brief summary:
In same wheel, in the certain situation of sand amount, along with tiny balloon and abrasive material volume ratio become large, the polishing performance of wheel, grinding performance is improved and (but notes: according to 3.2 test datas, find, when tiny balloon and abrasive material volume ratio reach critical value or surpass critical value, grinding performance is by step-down; The consumption of tiny balloon will and be ground material according to the kind of selected microballoon, specification (diameter) size the requirement of the polishing performance of wheel, grinding performance is considered); Can regulate by abrasive species and meet the different requirements of material to the polishing performance of wheel, grinding performance that are ground from grain number simultaneously.
Claims (8)
1. a preparation method for the new compression molding face wheel containing grid sisal hemp back of the body lid, comprises the steps:
1) after being mixed to rear mold pressing, abrasive material, tiny balloon and binding agent be heated and cured into grinding body;
2) grinding body and grid sisal hemp back of the body lid are bonded to an integral body with binding agent, form compression molding face wheel.
2. preparation method as claimed in claim 1, described tiny balloon is selected from glass tiny balloon, resin tiny balloon, macromolecule tiny balloon, ceramic hollow microballoon; The diameter 20um-10000um of described tiny balloon.
3. preparation method as claimed in claim 1, wherein said abrasive material is selected from the recovery sand of natural emery, Naxas emery, garnet, natural diamond, brown corundum abrasive, white fused alumina abrasive material, single alundum abrasive material, black silicon carbide grain, green silicon carbide abrasive material, cubic silicon carbide abrasive material, cerium silicon carbide abrasive material, boron carbide, diamond, cubic boron nitride or vitrified abrasive, resin wheel.
4. preparation method as claimed in claim 1, wherein said bonding agent is selected from phenolic resins, urea aldehyde, melamine resin, epoxy resin, inorganic binder or by phenolic resins, urea aldehyde, melamine resin, epoxy, acrylic acid modified phenolic aldehyde.
5. preparation method as claimed in claim 1, the consumption of wherein said tiny balloon is the 1-50% of abrasive material volume.
6. preparation method as claimed in claim 1, has increased and has also comprised one deck grid sisal hemp cloth in the middle of wherein said grinding body.
7. a preparation method for the new compression molding face wheel containing grid sisal hemp back of the body lid, comprises the steps:
1) put after abrasive material, tiny balloon are mixed with binding agent the grid sisal hemp back of the body cover together with mold pressing;
2) be heating and curing and form compression molding face wheel.
8. the preparation method as described in claim 1 or 7, wherein adopts twice of hydraulic press compressing; Pressurization is for the first time toasted 2h at suppressing latter 80 ℃, and pressurization is for the second time toasted 4-6h at suppressing latter 120 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310554405.5A CN103551988A (en) | 2013-11-08 | 2013-11-08 | Preparation method for compression-molded flat wheel comprising gridded sisal hemp back cover |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889896A (en) * | 2015-06-30 | 2015-09-09 | 清远市百佳研磨科技有限公司 | Coated abrasive tool and production method thereof |
| CN105437091A (en) * | 2015-11-11 | 2016-03-30 | 郑州磨料磨具磨削研究所有限公司 | Large-pore resin binder superhard material grinding wheel for stainless steel end face grinding and manufacturing method thereof |
| CN107042478A (en) * | 2017-05-09 | 2017-08-15 | 江苏邦富莱苏蒙新材料有限公司 | A kind of heavy duty grinding wheel thermal curing methods |
| CN110614593A (en) * | 2019-07-31 | 2019-12-27 | 陈祉序 | Polishing material and polishing equipment |
| CN111037478A (en) * | 2020-01-11 | 2020-04-21 | 邬师荣 | Grinding tool based on chemical fermentation synthesis reaction and manufacturing method thereof |
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| US5669941A (en) * | 1996-01-05 | 1997-09-23 | Minnesota Mining And Manufacturing Company | Coated abrasive article |
| US6159089A (en) * | 1998-12-16 | 2000-12-12 | Norton Company | Grinding system |
| US20010000838A1 (en) * | 1997-11-28 | 2001-05-10 | Akira Nagata | Resinoid grinding wheel |
| CN1946518A (en) * | 2004-04-20 | 2007-04-11 | 3M创新有限公司 | Abrasive articles, and methods of making and using the same |
| US20110065362A1 (en) * | 2009-09-16 | 2011-03-17 | Woo Edward J | Structured abrasive article and method of using the same |
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2013
- 2013-11-08 CN CN201310554405.5A patent/CN103551988A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5669941A (en) * | 1996-01-05 | 1997-09-23 | Minnesota Mining And Manufacturing Company | Coated abrasive article |
| US20010000838A1 (en) * | 1997-11-28 | 2001-05-10 | Akira Nagata | Resinoid grinding wheel |
| US6159089A (en) * | 1998-12-16 | 2000-12-12 | Norton Company | Grinding system |
| CN1946518A (en) * | 2004-04-20 | 2007-04-11 | 3M创新有限公司 | Abrasive articles, and methods of making and using the same |
| US20110065362A1 (en) * | 2009-09-16 | 2011-03-17 | Woo Edward J | Structured abrasive article and method of using the same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889896A (en) * | 2015-06-30 | 2015-09-09 | 清远市百佳研磨科技有限公司 | Coated abrasive tool and production method thereof |
| CN105437091A (en) * | 2015-11-11 | 2016-03-30 | 郑州磨料磨具磨削研究所有限公司 | Large-pore resin binder superhard material grinding wheel for stainless steel end face grinding and manufacturing method thereof |
| CN107042478A (en) * | 2017-05-09 | 2017-08-15 | 江苏邦富莱苏蒙新材料有限公司 | A kind of heavy duty grinding wheel thermal curing methods |
| CN110614593A (en) * | 2019-07-31 | 2019-12-27 | 陈祉序 | Polishing material and polishing equipment |
| CN111037478A (en) * | 2020-01-11 | 2020-04-21 | 邬师荣 | Grinding tool based on chemical fermentation synthesis reaction and manufacturing method thereof |
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