CN114454099A - Efficient grinding wheel for grinding titanium alloy and preparation process thereof - Google Patents
Efficient grinding wheel for grinding titanium alloy and preparation process thereof Download PDFInfo
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- 238000000227 grinding Methods 0.000 title claims abstract description 237
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 84
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 239000007767 bonding agent Substances 0.000 claims abstract description 43
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 27
- 239000012745 toughening agent Substances 0.000 claims abstract description 27
- 229910021418 black silicon Inorganic materials 0.000 claims abstract description 16
- 239000011230 binding agent Substances 0.000 claims abstract description 15
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 15
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical group [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003822 epoxy resin Substances 0.000 claims abstract description 8
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 8
- 239000005011 phenolic resin Substances 0.000 claims abstract description 8
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 8
- 229910052580 B4C Inorganic materials 0.000 claims abstract description 5
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- RBZGEUJLKTVORU-UHFFFAOYSA-N 12014-84-5 Chemical compound [Ce]#[Si] RBZGEUJLKTVORU-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 238000005245 sintering Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 6
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 150000002148 esters Chemical class 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 3
- UUBAGVAVMSSSQZ-UHFFFAOYSA-K [Al+3].C(C)OCC(=O)CC(=O)[O-].C(C)OCC(=O)CC(=O)[O-].C(C)OCC(=O)CC(=O)[O-] Chemical compound [Al+3].C(C)OCC(=O)CC(=O)[O-].C(C)OCC(=O)CC(=O)[O-].C(C)OCC(=O)CC(=O)[O-] UUBAGVAVMSSSQZ-UHFFFAOYSA-K 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 12
- 239000000047 product Substances 0.000 description 29
- 230000000052 comparative effect Effects 0.000 description 21
- PEDCQBHIVMGVHV-UHFFFAOYSA-N glycerol group Chemical group OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 10
- 238000001816 cooling Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 239000010431 corundum Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- -1 aluminum acetoacetic acid Chemical compound 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 229910001651 emery Inorganic materials 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 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
- B24D3/20—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 organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
-
- 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
- B24D3/02—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
- B24D3/20—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 organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
- B24D3/285—Reaction products obtained from aldehydes or ketones
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The application relates to the technical field of grinding wheels, and particularly discloses a high-efficiency grinding wheel for grinding titanium alloy and a preparation process thereof. An efficient grinding wheel for grinding titanium alloy is mainly prepared from the following raw materials in parts by weight: 80-120 parts of abrasive, 3.2-3.8 parts of first bonding agent, 1.8-2.2 parts of toughening agent and 6.5-7.5 parts of second bonding agent; the abrasive is at least one of green silicon carbide, black silicon carbide, cerium silicon and boron carbide; the first bonding agent is epoxy resin; and the second binding agent is phenolic resin. The high-efficiency grinding wheel for grinding the titanium alloy can be used for processing the titanium alloy product, and has the advantages of high processing efficiency, good stability and no damage to the titanium alloy product.
Description
Technical Field
The application relates to the technical field of grinding wheels, in particular to a high-efficiency grinding wheel for grinding titanium alloy and a preparation process thereof.
Background
Titanium alloy is known as modern metal and strategic metal, and has the excellent characteristics of small density, high specific strength, corrosion resistance, good heat resistance and the like. The titanium alloy can be made into various industrial products, such as aviation devices, automobile devices, precision instruments, cutters and the like, and is widely applied to various industrial fields.
When a titanium alloy product is processed, grinding and polishing processing are needed, a corundum grinding wheel with high hardness is needed to grind the titanium alloy product well, the abrasive component in the corundum grinding wheel is mainly alumina, and when the grinding wheel and the titanium alloy product are subjected to high-speed friction, the alumina and titanium in the titanium alloy can generate chemical reaction under a high-temperature environment, the metal structure of the titanium alloy is damaged, and the product quality of the titanium alloy is adversely affected.
Disclosure of Invention
In order to reduce adverse effects of a grinding wheel on titanium alloy product machining, the application provides an efficient grinding wheel for titanium alloy grinding and a preparation process thereof.
In a first aspect, the application provides a titanium alloy grinding high-efficiency grinding wheel, which adopts the following technical scheme:
the efficient grinding wheel for grinding the titanium alloy is mainly prepared from the following raw materials in parts by weight: 80-120 parts of abrasive, 3.2-3.8 parts of first bonding agent, 1.8-2.2 parts of toughening agent and 6.5-7.5 parts of second bonding agent; the abrasive is at least one of green silicon carbide, black silicon carbide, cerium silicon and boron carbide; the first bonding agent is epoxy resin; and the second binding agent is phenolic resin.
By adopting the technical scheme, when the titanium alloy product is subjected to grinding and polishing, the alumina component in the traditional corundum grinding wheel can chemically react with the titanium alloy product in a high-speed and high-temperature environment. The grinding wheel is prepared by uniformly mixing the grinding material, the toughening agent and the bonding agent I to fully disperse the components, uniformly mixing the grinding material, the toughening agent and the bonding agent II, and pressing and sintering the mixture to prepare the grinding wheel. And during high-speed friction, the friction loss fluctuation of the grinding wheel is small, the grinding wheel can continuously lose in a processing period, the grinding performance of the grinding wheel is maintained, the probability of passivation of the grinding wheel is effectively reduced, and the processing efficiency is higher and more stable.
Preferably, the filler has a particle size of greater than 120 mesh.
By adopting the technical scheme, in the processing process, the grinding material with overlarge granularity can generate overlarge abrasion on the titanium alloy product, and meanwhile, the friction loss of the grinding wheel is also larger, and the service life is shorter. The filler with the granularity of more than 120 meshes is selected, so that the comprehensive grinding performance and the service life can be better, and the product performance of the grinding wheel is better.
Preferably, the mass ratio of the first bonding agent to the toughening agent is (1.72-1.75): 1.
By adopting the technical scheme, the mass ratio of the first bonding agent to the toughening agent is optimized and adjusted, so that the structural performance of the grinding wheel can be improved, and the mechanical property is better. On the other hand, the friction loss and the processing performance of the grinding wheel can be balanced, the difficult abrasion of the titanium alloy is overcome, and the friction life of the grinding wheel can be maintained.
Preferably, the toughening agent is dibutyl ester.
By adopting the technical scheme, the dibutyl ester can reduce the interface bonding force between the particle materials, prevent the occurrence of agglomeration, improve the dispersion uniformity between the grinding material and the second bonding agent, and ensure that the isotropy of the grinding wheel is better. In addition, the friction loss of the grinding wheel can be regulated, the processing performance of the grinding wheel is improved, and the service life of the grinding wheel is prolonged.
Preferably, the abrasive material consists of green silicon carbide and black silicon carbide according to the mass ratio of (25-32): (1.8-3).
Through adopting above-mentioned technical scheme, optimize and adjust the composition ratio of packing, after adding green silicon carbide and black silicon carbide simultaneously, green silicon carbide has better fragility, and black silicon carbide has better toughness, and both combine together and can further adjust the friction loss volume and the processing property of emery wheel, prolong the life of emery wheel.
Preferably, the raw material also comprises (1.2-1.8) parts by weight of a compatilizer, and the compatilizer is at least one of aluminum acetoacetic acid ethoxylate and tetrabutyl orthotitanate.
By adopting the technical scheme, after the acetoacetic acid aluminum ethoxide and the tetrabutyl orthotitanate are added, the high activity of the adhesive enables a cross-linking bonding reaction to occur among the bonding agent I with the active group, the bonding agent II and the plasticizer, and promotes the adhesive bonding between the abrasive and the polymer, thereby greatly improving the compatibility and the bonding force of each raw material in the grinding wheel and improving the mechanical property and the grinding property of the grinding wheel.
In a second aspect, the application provides a preparation process of a high-efficiency grinding wheel for grinding titanium alloy, which adopts the following technical scheme:
a preparation process of a titanium alloy high-efficiency grinding wheel comprises the following steps:
s1: uniformly mixing the abrasive, the first bonding agent and the toughening agent according to the formula ratio, and standing to obtain an intermediate material;
s2: uniformly mixing the intermediate material and the second binding agent, and then screening to obtain a mixture;
s3: pressing and molding the mixture in a die, and then drying to prepare a grinding wheel green body;
s4: sintering the grinding wheel blank to obtain a grinding wheel finished product, wherein the sintering temperature is 155-;
s5: and (5) carrying out quality inspection and packaging on the grinding wheel finished product.
By adopting the technical scheme, the grinding material, the first bonding agent and the toughening agent are uniformly mixed firstly, so that the toughening agent is uniformly dispersed between the grinding material and the first bonding agent, then the grinding material and the second bonding agent are uniformly mixed, and a grinding wheel finished product with good isotropy is prepared after sintering, and the product performance is more stable.
Preferably, the standing time in the step S1 is 20-35 min.
By adopting the technical scheme, after the grinding wheel is kept still for a period of time, the first binding agent can better permeate and disperse in the intermediate material, and the product performance of the grinding wheel is further improved.
Preferably, the molding density of the finished grinding wheel product is 1.8-1.85g/cm3。
By adopting the technical scheme, the forming density of the finished grinding wheel is optimized and adjusted, the processing performance, the service life and the production cost of the grinding wheel are balanced, and the comprehensive product performance of the grinding wheel is improved.
Preferably, the step S2 further includes a step of adding a compatibilizer.
By adopting the technical scheme, the method has the advantages that,
in summary, the present application has the following beneficial effects:
1. according to the grinding wheel, the green silicon carbide, the black silicon carbide, the cerium silicon and the boron carbide are used as grinding materials, and the grinding wheel with good performance is prepared under the bonding action of the first bonding agent, the second bonding agent and the toughening agent, so that the titanium alloy product can be efficiently processed, and the quality and the performance of the titanium alloy product cannot be adversely affected.
2. The compatilizer is preferably added in the application, so that the bonding strength between the grinding materials is enhanced, and the mechanical property and the grinding property of the grinding wheel are further improved.
3. The efficient grinding wheel for grinding the titanium alloy, which is prepared by the preparation process, has good processing performance and safety performance, and cannot generate adverse effects on the performance of a titanium alloy product.
Detailed Description
The present application will be described in further detail with reference to examples.
The raw materials of the examples and comparative examples of the present application are generally commercially available unless otherwise specified.
Examples
Example 1
The efficient grinding wheel for grinding the titanium alloy is prepared from the following raw materials in parts by weight: 80kg of abrasive, 3.2kg of first bonding agent, 1.8kg of toughening agent and 6.5kg of second bonding agent.
Wherein the abrasive is black silicon carbide with the granularity of 220 meshes. The first bonding agent is epoxy resin, model E51. The toughening agent is glycerol. The second binder is phenolic resin powder, the brand PR-1040, and the manufacturer is Pasteur Germany.
The preparation process of the efficient grinding wheel for grinding the titanium alloy comprises the following steps:
s1: uniformly mixing the abrasive, the first bonding agent and the toughening agent in a formula ratio in a mixer, and standing for 20min to obtain an intermediate material;
s2: uniformly mixing the second binding agent and the intermediate material, then screening the mixture, and standing the mixture for 15min to obtain a mixture;
s3: filling the mixture into a mould with required specification and size, and pressing and molding under the pressure of 15MPa/cm3Pressing for 30s, and drying to prepare a grinding wheel green body;
s4: placing the grinding wheel blank in a hardening furnace, and carrying out hardening sintering according to the following temperature-time curve: 1. 30-30 min; 2. 40-60 min; 3. 50-90 min; 4. 60-150 min; 5. 70-150 min; 6. 80-120 min; 7. 90-90 min; 8. 100-60 min; 9. 110-150 min; 10. 120-60 min; 11. 140-60 min; 12. heating to 155 ℃ at a heating rate of 20 ℃/h, preserving heat for 360min, and finally cooling to room temperature at a cooling rate of 50 ℃/h to obtain a finished grinding wheel product, wherein the density of the finished grinding wheel product is 1.8g/cm3；
S5: and (5) finishing, quality inspection, packaging and warehousing of the finished grinding wheel.
Example 2
The efficient grinding wheel for grinding the titanium alloy is prepared from the following raw materials in parts by weight: 120kg of grinding materials, 3.8kg of first bonding agent, 2.2kg of toughening agent and 7.5kg of second bonding agent.
Wherein the abrasive is black silicon carbide with the granularity of 320 meshes. The first bonding agent is epoxy resin, model E44. The toughening agent is glycerol. The second binder is phenolic resin powder, model 2123, and the manufacturer is basf, germany.
The preparation process of the efficient grinding wheel for grinding the titanium alloy comprises the following steps:
s1: uniformly mixing the abrasive, the first bonding agent and the toughening agent in a formula ratio in a mixer, and standing for 35min to obtain an intermediate material;
s2: uniformly mixing the second binding agent and the intermediate material, then screening the mixture, and standing the mixture for 15min to obtain a mixture;
s3: filling the mixture into a mould with required specification and size, and pressing and molding under the pressure of 20MPa/cm3Pressing for 40s, and drying to prepare a grinding wheel green body;
s4: placing the grinding wheel blank in a hardening furnace, and carrying out hardening sintering according to the following temperature-time curve: 1. 30-30 min; 2. 40-60 min; 3. 50-90 min; 4. 60-180 min; 5. 70-240 min; 6. 80-240 min; 7. 90-150 min; 8. 100-90 min; 9. 110-240 min; 10. 120-90 min; 11. 140-60 min; 12. heating to 175 ℃ at a heating rate of 20 ℃/h, preserving heat for 480min, and finally cooling to room temperature at a cooling rate of 50 ℃/h to obtain a finished grinding wheel product, wherein the density of the finished grinding wheel product is 1.85g/cm3；
S5: and (5) finishing, quality inspection, packaging and warehousing of the finished grinding wheel.
Example 3
The efficient grinding wheel for grinding the titanium alloy is prepared from the following raw materials in parts by weight: 100kg of abrasive, 3.5kg of first bonding agent, 2kg of toughening agent and 7kg of second bonding agent.
Wherein the abrasive is black silicon carbide with the granularity of 220 meshes. The first bonding agent is epoxy resin, model E44. The toughening agent is glycerol. The second binder is phenolic resin powder with a model number of 2123, and the manufacturer is Pasfu Germany.
The preparation process of the efficient grinding wheel for grinding the titanium alloy comprises the following steps:
s1: uniformly mixing the abrasive, the first bonding agent and the toughening agent in a formula ratio in a mixer, and standing for 30min to obtain an intermediate material;
s2: uniformly mixing the second binding agent and the intermediate material, then screening the mixture, and standing the mixture for 15min to obtain a mixture;
s3: filling the mixture into a mould with required specification and size, and pressing and molding under the pressure of 18MPa/cm3Pressing for 35s, and drying to prepare a grinding wheel blank;
s4: placing the grinding wheel blank in a hardening furnace, and carrying out hardening sintering according to the following temperature-time curve: 1. 30-30 min; 2. 40-60 min; 3. 50-90 min; 4. 60-150 min; 5. 70-150 min; 6. 80-120 min; 7. 90-90 min; 8. 100-60 min; 9. 110-150 min; 10. 120-60 min; 11. 140-60 min; 12. heating to 160 ℃ at a heating rate of 20 ℃/h, preserving heat for 360min, and finally cooling to room temperature at a cooling rate of 50 ℃/h to obtain a finished grinding wheel product, wherein the density of the finished grinding wheel product is 1.833g/cm3；
S5: and (5) finishing, quality inspection, packaging and warehousing of the finished grinding wheel.
Example 4
The high-efficiency grinding wheel for grinding titanium alloy of the present example is different from example 3 in that: in the preparation process of the high-efficiency grinding wheel for grinding titanium alloy, the step S4: placing the grinding wheel blank in a hardening furnace, and carrying out hardening sintering according to the following temperature-time curve: 1. 30-30 min; 2. 40-60 min; 3. 50-90 min; 4. 60-150 min; 5. 70-150 min; 6. 80-120 min; 7. 90-90 min; 8. heating to 115 deg.C at a rate of 15 deg.C/h, holding for 150min, and fitting to-0.0027 x2Heating to 160 ℃ and keeping the temperature for 360min by a heating rate curve of +0.7738x-30.803, wherein the ordinate y is the heating rate, the abscissa x is the temperature, and R is20.68, origin coordinate (20,115), lastCooling to room temperature at a cooling rate of 50 ℃/h to obtain a finished grinding wheel product, wherein the density of the finished grinding wheel product is 1.833g/cm3. The rest is the same as in example 3.
Example 5
The high-efficiency grinding wheel for grinding titanium alloy of the present example is different from example 4 in that: the abrasive in the raw material was green silicon carbide with a particle size of 220 mesh, and the rest was the same as in example 4.
The process for producing the grinding wheel for grinding a titanium alloy of this example is the same as in example 4.
Example 6
The high-efficiency grinding wheel for grinding titanium alloy of the present example is different from example 4 in that: the abrasive in the raw material was cerized silica having a particle size of 220 mesh, and the rest was the same as in example 4.
The process for preparing the high-efficiency grinding wheel for grinding titanium alloy of the embodiment is the same as that of embodiment 4.
Example 7
The high-efficiency grinding wheel for grinding titanium alloy of the present example is different from example 4 in that: the abrasive in the raw material consists of boron carbide and green silicon carbide according to the mass ratio of 2:1, the average particle size is 220 meshes, and the rest is the same as that in the embodiment 4.
The process for preparing the high-efficiency grinding wheel for grinding titanium alloy of the embodiment is the same as that of embodiment 4.
Example 8
The high-efficiency grinding wheel for grinding titanium alloy of the present example is different from example 5 in that: the particle size of green silicon carbide in the raw material was 120 mesh, and the rest was the same as in example 5.
The process for preparing the high-efficiency grinding wheel for grinding titanium alloy of the embodiment is the same as that of the embodiment 5.
Example 9
The high-efficiency grinding wheel for grinding titanium alloy of the present example is different from example 8 in that: the toughening agent in the raw material is dibutyl ester, and the rest is the same as that in the embodiment 8.
The process for preparing the high-efficiency grinding wheel for grinding titanium alloy of the embodiment is the same as that of the embodiment 8.
Example 10
The high-efficiency grinding wheel for grinding titanium alloy of the present example is different from example 9 in that: the abrasive in the raw material consists of green silicon carbide and black silicon carbide according to the mass ratio of 25:1.8, and the rest is the same as that in the example 9.
The process for producing the high-efficiency grinding wheel for grinding titanium alloy of this example is the same as that of example 9.
Example 11
The high-efficiency grinding wheel for grinding titanium alloy of the present example is different from example 9 in that: the abrasive in the raw material consists of green silicon carbide and black silicon carbide according to the mass ratio of 32:3, and the rest is the same as that in the example 9.
The process for producing the high-efficiency grinding wheel for grinding titanium alloy of this example is the same as that of example 9.
Example 12
The high-efficiency grinding wheel for grinding titanium alloy of the present example is different from example 10 in that: the raw materials also comprise 1.2kg of compatilizer, the compatilizer is aluminum acetoacetate ethoxy, and the rest is the same as the example 10.
The process for manufacturing the high-efficiency grinding wheel for grinding titanium alloy of the present example is the same as that of example 10.
Example 13
The high-efficiency grinding wheel for grinding titanium alloy of the present example is different from example 10 in that: the raw materials also comprise 1.2kg of compatilizer, the compatilizer is tetrabutyl orthotitanate, and the rest is the same as that in the embodiment 10.
The process for manufacturing the high-efficiency grinding wheel for grinding titanium alloy of the present example is the same as that of example 10.
Example 14
The high-efficiency grinding wheel for grinding titanium alloy of the present example is different from example 10 in that: the raw materials also comprise 1.8kg of compatilizer, the compatilizer is tetrabutyl orthotitanate, and the rest is the same as that in the embodiment 10.
The process for manufacturing the high-efficiency grinding wheel for grinding titanium alloy of the present example is the same as that of example 10.
Example 15
The high-efficiency grinding wheel for grinding titanium alloy of the present example is different from example 10 in that: the raw materials also comprise 1.2kg of compatilizer, the compatilizer consists of aluminum acetoacetic ether oxide and tetrabutyl titanate according to the molar ratio of 0.5:2.2, and the rest is the same as the example 10.
The process for manufacturing the high-efficiency grinding wheel for grinding titanium alloy of the present example is the same as that of example 10.
Comparative example
Comparative example 1
The high-efficiency grinding wheel for grinding the titanium alloy is prepared from the following raw materials in parts by weight: 100kg of abrasive, 4.5kg of first bonding agent, 1.5kg of toughening agent and 7kg of second bonding agent.
Wherein the abrasive is black silicon carbide with the granularity of 220 meshes. The first bonding agent is epoxy resin, model E44. The toughening agent is glycerol. The second binder is phenolic resin powder, model 2123, and the manufacturer is basf, germany.
The process for preparing the high-efficiency grinding wheel for grinding titanium alloy of the comparative example is the same as that of example 1.
Comparative example 2
The high-efficiency grinding wheel for grinding the titanium alloy is prepared from the following raw materials in parts by weight: 120kg of abrasive, 3.8kg of first bonding agent and 9.7kg of second bonding agent.
Wherein the abrasive is black silicon carbide with the granularity of 220 meshes. The first bonding agent is epoxy resin, model E44. The second binder is phenolic resin powder, model 2123, and the manufacturer is basf, germany.
The process for preparing the high-efficiency grinding wheel for grinding titanium alloy of the comparative example is the same as that of example 1.
Comparative example 3
This comparative example differs from example 1 in that: in the preparation process of the efficient grinding wheel for grinding the titanium alloy, in the step S3, the mixture is filled in a die with required specification and size for compression molding, and the pressure is 20MPa/cm3(ii) a The density of the finished grinding wheel in S4 is 1.9g/cm3
Comparative example 4
The titanium alloy grinding high-efficiency grinding wheel of the comparative example is different from the titanium alloy grinding high-efficiency grinding wheel of the example 4 in that: the abrasive in the raw material was green silicon carbide with a particle size of 60 mesh, and the rest was the same as in example 4.
The process for preparing the high-efficiency grinding wheel for grinding titanium alloy of the comparative example is the same as that of example 4.
Comparative example 5
The titanium alloy grinding high-efficiency grinding wheel of the comparative example is different from the titanium alloy grinding high-efficiency grinding wheel of the example 10 in that: the raw materials also comprise 1.8kg of compatilizer, the compatilizer is coupling agent KH-550, and the rest is the same as the example 10.
The process for preparing the high-efficiency grinding wheel for grinding titanium alloy of the comparative example is the same as that of example 10.
Performance test
Detection method
The high-efficiency grinding wheels for titanium alloy grinding of examples 1 to 15 and comparative examples 1 to 5 were used for grinding performance tests, and the test equipment was: a grinding machine; workpiece material: the titanium alloy sheet has the hardness of 30HRC and the yield strength of 860 MPa; setting the linear speed of the grinding wheel: 35m/s, the feeding speed of the workbench is 0.2m/min, and the feed amount is 0.02 mm; for the convenience of test, the specifications of the grinding wheel in the embodiment and the comparative example of the application are 250mm in outer diameter, 32mm in inner diameter and 30mm in thickness, and the grinding wheel of the application can be customized into other sizes according to the requirements of customers; the grinding efficiency and the wheel wear rate of the grinding wheel were measured, wherein the grinding ratio is Δ m2/Δ m1, and the wheel wear rate is Δ m1/t, (t is the grinding time, Δ m1 is the mass difference of the grinding wheel before and after time t, and Δ m2 is the mass difference of the titanium alloy sheet before and after time t), and the test results are shown in table 1.
TABLE 1 data of grinding performance test of high-performance grinding wheel for grinding titanium alloy of examples 1 to 15 and comparative examples 1 to 5
It can be seen from the analysis of examples 1 to 3 and comparative examples 1 to 3 in combination with table 1 that the composition ratio of the raw materials is optimized and adjusted, and the curing temperature and the curing process are adjusted at the same time, so that a finished grinding wheel product with better grinding performance is obtained, and the grinding ratio is higher than that of a conventional grinding wheel.
It can be seen from the analysis of the example 4 and the examples 1 to 3 and the combination of the table 1 that the further adjustment of the control curve of the curing temperature enables the cross-linking bonding state of the first bonding agent and the second bonding agent to be better, and the grinding performance of the grinding wheel is ensured, and meanwhile, the abrasion rate of the grinding wheel is lower and the service life is longer.
Analyzing the examples 5-7 and 10-11 and combining the table 1, it can be seen that the composition ratio of the abrasive is tested and optimized, and it can be seen that when the abrasive is composed of green silicon carbide and black silicon carbide according to the mass ratio of 25:1.8, the grinding ratio of the grinding wheel is improved by 28.6% compared with the grinding ratio of the example 5.
It can be seen from analyzing the example 8 and the comparative example 4 and combining the table 1 that the particle size of the abrasive is optimized and adjusted, the probability of adhesion and grinding force reduction of the grinding wheel during grinding processing is effectively reduced, the grinding ratio of the grinding wheel is improved, and meanwhile, the abrasion rate of the grinding wheel is more appropriate.
By analyzing examples 12-15 and comparative example 5 and combining table 1, the grinding ratio of the grinding wheel is greatly improved after the compatilizer is added into the raw materials, and the grinding ratio of the grinding wheel is improved by 39.7% in example 15 compared with the grinding ratio of the grinding wheel using the conventional modifier in comparative example 5.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. The efficient grinding wheel for grinding the titanium alloy is characterized by being mainly prepared from the following raw materials in parts by weight: 80-120 parts of abrasive, 3.2-3.8 parts of first bonding agent, 1.8-2.2 parts of toughening agent and 6.5-7.5 parts of second bonding agent; the abrasive is at least one of green silicon carbide, black silicon carbide, cerium silicon and boron carbide; the first bonding agent is epoxy resin; and the second binding agent is phenolic resin.
2. The titanium alloy grinding wheel according to claim 1, wherein the filler has a particle size of more than 120 mesh.
3. The efficient grinding wheel for grinding titanium alloy as claimed in claim 1, wherein the mass ratio of the first binder to the toughening agent is (1.72-1.75): 1.
4. The efficient grinding wheel for grinding titanium alloy as claimed in claim 3, wherein said toughening agent is dibutyl ester.
5. The high-efficiency grinding wheel for grinding titanium alloy as claimed in claim 1, wherein said abrasive consists of green silicon carbide and black silicon carbide in the mass ratio of (25-32) to (1.8-3).
6. The efficient grinding wheel for grinding titanium alloy as claimed in claim 1, wherein the raw material further comprises (1.2-1.8) parts by weight of a compatilizer, and the compatilizer is at least one of aluminum ethoxyacetoacetate and tetrabutyl orthotitanate.
7. A process for preparing a high-efficiency grinding wheel for grinding titanium alloy according to any one of claims 1 to 5, which comprises the following steps:
s1: uniformly mixing the abrasive, the first bonding agent and the toughening agent according to the formula ratio, and standing to obtain an intermediate material;
s2: uniformly mixing the intermediate material and the second binding agent, and then screening to obtain a mixture;
s3: pressing and molding the mixture in a die, and then drying to prepare a grinding wheel green body;
s4: sintering the grinding wheel blank to obtain a grinding wheel finished product, wherein the sintering temperature is 155-;
s5: and (5) carrying out quality inspection and packaging on the grinding wheel finished product.
8. The process for preparing the high-efficiency grinding wheel for grinding titanium alloy as claimed in claim 7, wherein the standing time in the step S1 is 20-35 min.
9. The process for preparing the efficient grinding wheel for grinding the titanium alloy as claimed in claim 1, wherein the forming density of the finished grinding wheel is from 1.8 to 1.85g/cm through thin-wall labor.
10. The process of claim 7, wherein the step S2 further comprises adding a compatibilizer.
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