CN115056149B - Resin grinding wheel and preparation method and application thereof - Google Patents
Resin grinding wheel and preparation method and application thereof Download PDFInfo
- Publication number
- CN115056149B CN115056149B CN202210723102.0A CN202210723102A CN115056149B CN 115056149 B CN115056149 B CN 115056149B CN 202210723102 A CN202210723102 A CN 202210723102A CN 115056149 B CN115056149 B CN 115056149B
- Authority
- CN
- China
- Prior art keywords
- grinding wheel
- abrasive
- friction
- resin grinding
- resin
- 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.)
- Active
Links
- 238000000227 grinding Methods 0.000 title claims abstract description 134
- 229920005989 resin Polymers 0.000 title claims abstract description 46
- 239000011347 resin Substances 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 45
- 230000008569 process Effects 0.000 claims abstract description 32
- 239000000314 lubricant Substances 0.000 claims abstract description 22
- 239000011230 binding agent Substances 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 claims abstract description 15
- -1 friction promoters Substances 0.000 claims abstract description 13
- 238000005728 strengthening Methods 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 26
- 239000002131 composite material Substances 0.000 claims description 17
- 239000007822 coupling agent Substances 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 14
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 8
- 239000011707 mineral Substances 0.000 claims description 8
- HQNHTEJTBUTVAE-UHFFFAOYSA-N cerium(3+);borate Chemical compound [Ce+3].[O-]B([O-])[O-] HQNHTEJTBUTVAE-UHFFFAOYSA-N 0.000 claims description 5
- GJJSDZSDOYNJSW-UHFFFAOYSA-N lanthanum(3+);borate Chemical compound [La+3].[O-]B([O-])[O-] GJJSDZSDOYNJSW-UHFFFAOYSA-N 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical group [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 4
- 229910001610 cryolite Inorganic materials 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 239000005011 phenolic resin Substances 0.000 claims description 4
- 229920001568 phenolic resin Polymers 0.000 claims description 4
- 229910052582 BN Inorganic materials 0.000 claims description 3
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 239000010431 corundum Substances 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 239000007767 bonding agent Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 230000008439 repair process Effects 0.000 abstract description 23
- 238000003754 machining Methods 0.000 abstract description 15
- 229910052751 metal Inorganic materials 0.000 abstract description 9
- 239000002184 metal Substances 0.000 abstract description 9
- 229910045601 alloy Inorganic materials 0.000 abstract description 7
- 239000000956 alloy Substances 0.000 abstract description 7
- 239000007787 solid Substances 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 6
- 238000001694 spray drying Methods 0.000 abstract description 4
- 239000003082 abrasive agent Substances 0.000 abstract description 3
- 238000007670 refining Methods 0.000 abstract description 2
- 238000005469 granulation Methods 0.000 abstract 1
- 230000003179 granulation Effects 0.000 abstract 1
- 238000007731 hot pressing Methods 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 20
- 239000000047 product Substances 0.000 description 12
- 238000012545 processing Methods 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000005253 cladding Methods 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 239000002002 slurry Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000001238 wet grinding Methods 0.000 description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 description 6
- 239000011265 semifinished product Substances 0.000 description 6
- 230000003746 surface roughness Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000007373 indentation Methods 0.000 description 4
- 238000004372 laser cladding Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910000619 316 stainless steel Inorganic materials 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000009837 dry grinding Methods 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000007751 thermal spraying Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 238000003466 welding Methods 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
- B24D3/34—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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention provides a resin grinding wheel, comprising: hard abrasives, soft abrasives, solid lubricants, friction promoters, silane coupling agents, binders, and fillers. The resin grinding wheel is prepared by the steps of mechanical wet refining grinding, spray drying granulation, hot pressing and solidification, grinding wheel dressing, working face dressing and the like. The resin grinding wheel provided by the invention can be applied to the precision machining treatment of metal or alloy repair layers on the surfaces of various parts with abrasion or contact fatigue working conditions such as shafts, holes, teeth and the like, and the machining strengthening of mechanical properties such as hardness, elastoplasticity, toughness and the like of the repair layers is realized through the friction chemical reaction of self-repairing components of the grinding wheel and the surfaces of the repair layers in the grinding process while the machining quality of the surfaces of the repair layers is improved. The invention also provides a preparation method and application of the resin grinding wheel.
Description
Technical Field
The invention belongs to the technical field of mechanical precision machining, and particularly relates to a resin grinding wheel and a preparation method and application thereof; in particular to a resin grinding wheel for grinding and strengthening a remanufactured repair layer, and a preparation method and application thereof.
Background
Remanufacturing refers to a manufacturing process of performing specialized repair or upgrading reformation on waste products to ensure that the quality characteristics of the waste products are not lower than the level of a new prototype. The remanufacturing is oriented to the second half of the life cycle of the product, the recycling industry chain of 'resource-product-scrapping-remanufacturing product' is opened, and the advantages of cost, energy conservation, material conservation, emission reduction and the like are obvious.
The remanufacturing forming layer is prepared on the surface of the part of the waste mechanical product by using various surface technologies, so that the size recovery and the function recovery of the damaged mechanical part can be realized, and the remanufacturing forming layer is the most important procedure in the remanufacturing process of the mechanical product. It can be said that the quality and performance of the remanufactured shaping layer is the most important guarantee to ensure that the quality characteristics of the remanufactured product are not lower than those of the prototype new.
Currently, development and application of remanufacturing forming layers are mainly focused on research and development of forming layer materials and optimization of forming processes, and research and application of preparing metal or alloy repairing layers such as iron-based, nickel-based, cobalt-based and the like by adopting forming processes such as laser cladding, plasma cladding, thermal spraying, arc overlaying, electroplating, brush plating and the like are quite mature. However, after the forming layer is prepared by the method, the surface roughness is large, the surface dimensional precision and roughness of the forming layer need to be achieved by adopting a proper subsequent machining process, and particularly, the remanufactured forming layer on the surface of some friction matching parts is manufactured by adopting a precise grinding process to obtain a high-quality matching surface. Because the part is oversized, the matrix material is easy to deform or the forming layer is easy to change phase when heated, and the like, the remanufactured forming layer after grinding is generally not subjected to heat treatment or other strengthening treatment, so that the mechanical properties such as hardness, toughness and the like of the surface of the part cannot be further improved after being determined by a material system and a forming process.
Disclosure of Invention
In view of the above, the invention aims to provide a resin grinding wheel, a preparation method and application thereof, and the resin grinding wheel provided by the invention can improve the surface processing quality of a repairing layer and realize the processing strengthening of mechanical properties such as hardness, toughness and the like of the repairing layer.
The invention provides a resin grinding wheel, comprising:
preferably, the hard abrasive preferably comprises: a first abrasive and a second abrasive;
the first abrasive is one or more selected from diamond, cubic boron nitride and corundum;
the second abrasive is boron powder.
Preferably, the mass content of the first abrasive in the hard abrasive is 50-80%;
the mass content of the second abrasive in the hard abrasive is 20-50%.
Preferably, the soft abrasive is serpentine mineral powder.
Preferably, the lubricant comprises:
molybdenum disulfide and polytetrafluoroethylene.
Preferably, the friction accelerator includes:
lanthanum borate and cerium borate.
Preferably, the coupling agent is a silane coupling agent;
the bonding agent is phenolic resin;
the filler is cryolite.
The invention provides a preparation method of a resin grinding wheel, which comprises the following steps:
mixing a hard abrasive, a soft abrasive, a lubricant, a friction accelerator, a coupling agent, a binding agent and a filler to obtain composite powder;
and carrying out hot press molding on the composite powder to obtain the resin grinding wheel.
Preferably, the particle size of the composite powder is 30-50 microns;
the hot press molding includes: and (5) curing after pressing.
The invention provides a remanufacturing layer which is obtained by processing the resin grinding wheel according to the technical scheme or the resin grinding wheel prepared by the method according to the technical scheme.
The invention provides a novel grinding wheel material, which realizes the precise grinding processing of the surface of a forming layer by means of the mechanical surface effect and the friction chemical reaction generated between the forming layer and a grinding wheel in the grinding process, and simultaneously carries out the synchronous on-line strengthening of the mechanical property of a remanufactured forming layer so as to further improve the performance and the service life of remanufactured products. The resin grinding wheel provided by the invention can be applied to the precision machining treatment of metal or alloy repair layers on the surfaces of various parts with abrasion or contact fatigue working conditions such as shafts, holes, teeth and the like, and the machining reinforcement of mechanical properties such as hardness, toughness and the like of the repair layer is realized by the friction chemical reaction of self-repairing components of the grinding wheel and the surface of the repair layer in the grinding process while the surface machining quality of the repair layer is improved, so that the tribological properties of the repair layer are improved.
Drawings
FIG. 1 is a process flow diagram of a method for preparing a resin grinding wheel in an embodiment of the invention.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a resin grinding wheel, comprising:
in the present invention, the hard abrasive is capable of removing material from the surface to be processed (forming layer) (i.e., reducing surface roughness).
In the present invention, the mass content of the hard abrasive is preferably 35 to 40%, more preferably 36 to 38%.
In the present invention, the hard abrasive preferably includes: a first abrasive and a second abrasive; the first abrasive is preferably one or more selected from diamond, cubic Boron Nitride (CBN) and corundum; the second abrasive is preferably boron powder.
In the present invention, the mass content of the first abrasive in the hard abrasive is preferably 50 to 80%, more preferably 60 to 70%, most preferably 65%; the mass content of the second abrasive in the hard abrasive is preferably 20 to 50%, more preferably 30 to 40%, and most preferably 35%.
In the present invention, the particle size of the hard abrasive is preferably 100 to 200 mesh, more preferably 120 to 180 mesh, and still more preferably 140 to 160 mesh.
In the invention, the soft abrasive material has an auxiliary effect on the removal of the material of the forming layer and the reduction of the roughness, and has the effect of friction strengthening of the metal surface; the principle of friction reinforcement includes: firstly, active oxygen-containing groups are released under the action of friction high temperature generated by high-speed grinding, and high-hardness oxide is formed through tribochemical reaction with metal on the friction surface; and secondly, the aluminum oxide, magnesium oxide and silicon oxide superfine hard particles with passivated surfaces are formed by self dehydration reaction under the high temperature effect generated by friction and are inlaid on the friction surface, so that the forming layer is filled and embedded while the surface roughness of the forming layer is reduced, and the surface hardness and toughness are improved while the surface roughness of the forming layer is further reduced.
In the present invention, the mass content of the soft abrasive is preferably 15 to 25%, more preferably 20%.
In the present invention, the soft abrasive is preferably serpentine mineral powder.
In the present invention, the particle size of the soft abrasive is preferably 100 to 200 mesh, more preferably 120 to 180 mesh, and most preferably 140 to 160 mesh.
In the invention, the lubricant can further reduce friction in the high-speed grinding process, reduce the temperature of the grinding wheel under the condition of dry grinding, prolong the service life of the grinding wheel and prevent adhesion.
In the present invention, the mass content of the lubricant is preferably 4 to 5%, more preferably 4.5%.
In the present invention, the lubricant is preferably a solid lubricant; the lubricant preferably comprises:
molybdenum disulfide and polytetrafluoroethylene.
In the invention, the mass ratio of the molybdenum disulfide to the polytetrafluoroethylene is preferably (1-2): (2 to 1), more preferably (1.2 to 1.8): (1.8 to 1.2), most preferably (1.4 to 1.6): (1.6-1.4).
In the present invention, the particle size of the lubricant is preferably 100 to 200 mesh, more preferably 120 to 180 mesh, and most preferably 140 to 160 mesh.
In the invention, the friction accelerator can promote the tribochemical reaction between the metal material on the surface of the forming layer with high-speed friction and serpentine in the grinding process, and promote the dehydration reaction of serpentine at high temperature and promote the surface strengthening process of the forming layer.
In the present invention, the friction accelerator is preferably 2 to 4% by mass, more preferably 3%.
In the present invention, the friction accelerator preferably includes:
lanthanum borate and cerium borate.
In the invention, the mass ratio of the lanthanum borate to the cerium borate is preferably (1-2): (2 to 1), more preferably (1.2 to 1.8): (1.8 to 1.2), most preferably (1.4 to 1.6): (1.6-1.4).
In the present invention, the particle size of the friction accelerator is preferably 100 to 200 mesh, more preferably 120 to 180 mesh, and most preferably 140 to 160 mesh.
In the invention, the coupling agent can promote the dispersion of materials in the grinding and spray drying processes of the raw materials, so that different raw materials can be uniformly dispersed in the grinding wheel material finally.
In the present invention, the mass content of the coupling agent is preferably 4.5 to 5.5%, more preferably 5%.
In the present invention, the coupling agent is preferably a silane coupling agent such as KH550, KH560, KH570, etc.
In the invention, the binding agent is used as a binder, which is beneficial to the grinding wheel molding.
In the present invention, the mass content of the binder is preferably 2 to 25%, more preferably 22 to 23%.
In the present invention, the binder is preferably a phenolic resin.
In the present invention, the particle size of the binder is preferably 200 to 300 mesh, more preferably 220 to 280 mesh, and most preferably 240 to 260 mesh.
In the steel, the filler can be used as a raw material of a resin grinding wheel and can be used for adding adhesive force, so that the grinding surface temperature is effectively reduced, the cutting speed is accelerated, the service life of the grinding wheel is prolonged, the effects of reducing the friction chemical reaction and the dehydration reaction temperature of serpentine are achieved, and the grinding wheel also has friction strengthening effect under the condition of cooling grinding liquid.
In the present invention, the filler is preferably cryolite.
In the present invention, the particle size of the filler is preferably 100 to 200 mesh, more preferably 120 to 180 mesh, and still more preferably 140 to 160 mesh.
The invention provides a preparation method of the resin grinding wheel, which comprises the following steps:
mixing a hard abrasive, a soft abrasive, a lubricant, a friction accelerator, a coupling agent, a binding agent and a filler to obtain composite powder;
and carrying out hot press molding on the composite powder to obtain the resin grinding wheel.
The preparation method of the resin grinding wheel is characterized in that the resin grinding wheel is prepared by mixing and pressurizing raw materials such as hard grinding materials, soft grinding materials, solid lubricants, friction promoters, binders and the like with different particle sizes.
In the present invention, the components and mass contents of the hard abrasive, soft abrasive, lubricant, friction accelerator, coupling agent, binding agent and filler are the same as those described in the above technical schemes, and are not described herein.
In the present invention, the method of mixing is preferably a grinding treatment, and the grinding is preferably wet grinding; the milling treatment is preferably carried out in a nanomiller.
In the invention, the wet grinding preferably adopts water as a slurry carrier, more preferably deionized water; preferably, the invention mixes water with hard abrasive, soft abrasive, lubricant, friction accelerator, coupling agent, binding agent and filler to obtain slurry; the total mass concentration of the hard abrasive, soft abrasive, lubricant, friction accelerator, coupling agent, binder and filler in the slurry is preferably 180 to 320g/L, more preferably 200 to 300g/L, more preferably 220 to 280g/L, and most preferably 240 to 260g/L.
In the present invention, the wet-milled milling medium is preferably ZrO 2 A ball; the ZrO 2 The diameter of the ball is preferably 0.6 to 0.8mm, more preferably 0.7mm; the ball-to-material ratio (volume ratio) in the wet grinding process is preferably 1: (3 to 5), more preferably 1: (3.5 to 4.5), most preferably 1:4, a step of; the rotating speed of the grinding machine in the wet grinding process is preferably 2500-3500 r/min, more preferably 2800-3200 r/min, and most preferably 3000r/min; the vortex stirring rotating speed is preferably 1200-2400 r/min, more preferablyPreferably 1500 to 2000r/min, most preferably 1600 to 1800r/min.
In the invention, polyvinyl alcohol is preferably added in the wet grinding process; preferably, after grinding for 1-2 hours, adding polyvinyl alcohol (PVA) and continuously grinding for 4-6 hours; the mass of the polyvinyl alcohol is preferably 10 to 20%, more preferably 12 to 18%, most preferably 14 to 16% of the total mass of the hard abrasive, soft abrasive, lubricant, friction accelerator, coupling agent, binder and filler.
In the present invention, the wet grinding preferably further comprises:
and drying the obtained product to obtain the composite powder.
In the present invention, the drying is preferably spray drying, and the spray drying is preferably an atomization drying treatment in a spray dryer.
In the present invention, it is preferable to dilute the wet-milled product with water and then spray-dry the diluted product; the water is preferably distilled water; the solid content of the diluted material is preferably 40 to 60g/L, more preferably 45 to 55g/L, and most preferably 50g/L.
In the invention, the inlet temperature of the spray dryer in the spraying process is preferably 110-120 ℃, more preferably 115 ℃; the outlet temperature is preferably 80 to 100 ℃, more preferably 85 to 95 ℃, most preferably 90 ℃; the air pressure is preferably 3 to 5MPa, more preferably 3.5 to 4.5MPa, most preferably 4MPa; the flow rate is preferably 10 to 15L/min, more preferably 11 to 14L/min, and most preferably 12 to 13L/min.
In the present invention, the average particle diameter of the single component (including hard abrasive, soft abrasive, lubricant, friction accelerator, coupling agent, binder or filler) in the composite powder is preferably 0.5 to 1 micron, more preferably 0.6 to 0.9 micron, and most preferably 0.7 to 0.8 micron; the composite powder preferably has an overall particle size of 30 to 50 microns, more preferably 35 to 45 microns, and most preferably 40 microns.
In the invention, the composite powder is preferably weighed according to the obtained grinding wheels with different specifications in the hot press molding process, and is put into a cavity of a mold, and after being scraped, the composite powder is pressed (the reinforced glass fiber net sheet is required to be placed in) and solidified, so that the resin grinding wheel is obtained.
In the present invention, the hot press molding preferably includes: and (5) curing after pressing.
In the present invention, the pressing temperature is preferably 160 to 170 ℃, more preferably 165 ℃; the pressing time is preferably 30 to 60 seconds per millimeter of the thickness of the grinding wheel, more preferably 40 to 50 seconds per millimeter of the thickness of the grinding wheel, and most preferably 45 seconds per millimeter of the thickness of the grinding wheel; the pressing pressure is preferably 15 to 30MPa, more preferably 20 to 25MPa.
In the present invention, the curing temperature is preferably 160 to 180 ℃, more preferably 165 to 175 ℃, and most preferably 170 ℃; the curing time is preferably 8 to 12 hours, more preferably 9 to 11 hours, and most preferably 10 hours.
In the present invention, the hot press molding preferably further comprises:
and (3) trimming the obtained semi-finished product and trimming the grinding working surface of the grinding wheel to obtain the resin grinding wheel.
In the invention, in the dressing and grinding working face dressing process of the grinding wheel, the semi-finished product of the grinding wheel is preferably subjected to grinding wheel dressing on a grinding machine, then the semi-finished product of the grinding wheel after dressing is arranged on the grinding machine, grinding fluid is added in a processing area, and the grinding working face of the grinding wheel is dressed, so that the resin grinding wheel is obtained.
In the present invention, the flow rate of the grinding fluid is preferably 300 to 500ml/min, more preferably 350 to 450ml/min, and most preferably 400ml/min.
The process flow chart for preparing the resin grinding wheel in the embodiment of the invention is shown in figure 1.
The invention provides a remanufacturing layer which is obtained by processing the resin grinding wheel according to the technical scheme or the resin grinding wheel prepared by the method according to the technical scheme.
In the present invention, the remanufactured layer is preferably a formed layer prepared on a surface of a mechanical product part using a surface technique; the mechanical parts are preferably waste mechanical parts, such as various wear or contact fatigue working condition parts of shafts, holes, teeth and the like, and metal or alloy repair layers are arranged on the surfaces of the mechanical parts.
In the present invention, the surface technique is preferably selected from laser cladding, plasma cladding, thermal spraying, arc build-up welding, electroplating, brush plating, and the like.
In the present invention, the remanufacturing layer (forming layer) preferably has a composition selected from metals or alloys such as iron-based, nickel-based, and cobalt-based, more preferably stainless steel, and most preferably 316 stainless steel.
In the invention, the resin grinding wheel is preferably adopted for fine grinding; the grinding parameter in the fine grinding process is preferably 2000-3000 rpm/min, more preferably 2300-2700 rpm/min, and most preferably 2500rpm/min; the feeding speed is preferably 450 to 500mm/min, more preferably 480 to 520mm/min, most preferably 500mm/min; the fine grinding cutting depth is preferably 0.003-0.005 mm, more preferably 0.004mm; the refining time is preferably 3 to 7 minutes, more preferably 4 to 6 minutes, and most preferably 5 minutes.
The resin grinding wheel prepared by the invention is applied to the finish grinding processing link of the repairing layer, so that the remanufactured repairing layer can synchronously improve the hardness and toughness of the material surface on line in the grinding processing process. The invention can be applied to the precision machining treatment of metal or alloy repair layers on the surfaces of various parts with abrasion or contact fatigue working conditions such as shafts, holes, teeth and the like, and can realize the machining reinforcement of mechanical properties such as hardness, toughness and the like of the repair layers by the tribochemical reaction of self-repairing components of the grinding wheel and the surfaces of the repair layers in the grinding process while improving the machining quality of the surfaces of the repair layers, thereby prolonging the service life and improving the reliability of the parts. The resin grinding wheel for grinding and strengthening the remanufactured repair layer can be applied to the precision machining treatment of metal or alloy repair layers on the surfaces of various parts with abrasion or contact fatigue working conditions such as shafts, holes and teeth in a dry or wet grinding process, and the machining strengthening of mechanical properties such as hardness, toughness and the like of the repair layer is realized through the friction chemical reaction between self-repairing components of the grinding wheel and the surface of the repair layer in the grinding process while the surface machining quality of the repair layer is improved.
Example 1
Weighing different raw materials according to mass percentage, including: 45wt% of hard abrasive (mixed powder of CBN 65wt% and boron powder (purity 90%) 35 wt%), 10wt% of soft abrasive (serpentine mineral powder produced from Liaoning Xiuyan), 6wt% of solid lubricant (mass ratio of molybdenum disulfide to polytetrafluoroethylene 1:1), 2wt% of friction accelerator (mass ratio of lanthanum borate to cerium borate 1:1), 5wt% of silane coupling agent KH560, 22.5wt% of phenolic resin powder, and the balance being cryolite.
The deionized water is used as a slurry carrier to grind and refine the raw materials, the slurry concentration is 250g/L, and the grinding medium is ZrO with the diameter of phi 0.6-0.8 mm 2 The volume ratio of the ball to the slurry is 1:4; the rotating speed of the grinding machine is 3000r/min, and the rotating speed of vortex stirring is 1800r/min; after grinding for 2 hours, polyvinyl alcohol (PVA) accounting for 15% of the total mass of the raw materials is added for further ball milling for 6 hours.
After finishing grinding, taking out the slurry, diluting to 50g/L by adopting distilled water, transferring to a spray dryer for atomization and drying treatment, wherein the inlet temperature of the spray dryer is 115 ℃, the outlet temperature of the spray dryer is 90 ℃, the air pressure is 4MPa, and the flow is 12L/min; finally, the composite powder with the average particle size of 0.5-1 mu m and the macroscopic particle size of 30-50 mu m of the single component inside is obtained.
Weighing composite powder, putting the composite powder into a cavity of a die, and pressing and curing the composite powder after strickling to obtain a semi-finished product of the grinding wheel; the pressing process is as follows: the pressing temperature is 165 ℃, the pressing time is 45 seconds per millimeter of the thickness of the grinding wheel, and the pressure is 20MPa; the curing process is as follows: curing temperature is 180 ℃ and curing time is 12 hours.
And (3) grinding wheel modification is carried out on the semi-finished product of the grinding wheel on a grinding machine, then the semi-finished product of the grinding wheel after modification is installed on the grinding machine, grinding fluid is added into a processing area to carry out grinding working face modification of the grinding wheel, and the flow rate of the grinding fluid is 400ml/min, so that the resin grinding wheel is obtained.
Example 2
A resin grinding wheel was produced in the same manner as in example 1, except that the mass content of the hard abrasive was 37.5% by weight, the mass content of the serpentine mineral powder was 20% by weight, the mass content of the solid lubricant was 4.5% by weight, and the mass content of the friction accelerator was 3% by weight, as compared with example 1.
Example 3
A resin grinding wheel was obtained in the same manner as in example 1 except that the mass content of the hard abrasive was 30% by weight, the mass content of the serpentine mineral powder was 30% by weight, the mass content of the solid lubricant was 3% by weight, and the mass content of the friction accelerator was 4% by weight, as compared with example 1.
Comparative example 1
A resin grinding wheel was produced in the same manner as in example 1, except that serpentine mineral powder was replaced with a hard abrasive of the same mass fraction as in example 1.
Comparative example 2
A resin grinding wheel was produced in the same manner as in example 1, except that the hard abrasive was replaced with serpentine mineral powder of the same mass fraction as in example 1.
Comparative example 3
A resin grinding wheel was produced in the same manner as in example 1, except that the addition amount of the friction accelerator was 0.
Performance detection
The grinding wheels prepared in the examples and the comparative examples are adopted to carry out fine grinding treatment on a plurality of laser cladding layer samples (45 steel as a matrix and a plurality of laser cladding layer 316 stainless steel as a surface coating) of the common grinding wheel after grinding, the sizes of the cladding samples are 50mm multiplied by 30mm multiplied by 15mm, the surfaces of the cladding layers are planes of 50mm multiplied by 30mm, and the surface original roughness Ra=0.1 mu m. The fine grinding processing is carried out on a five-axis high-speed processing center, and grinding parameters are as follows: the rotating speed is 2500rpm/min, the feeding speed is 500mm/min, the accurate grinding cutting depth is 0.003-0.005 mm, and the processing time is 5min.
After finish grinding, testing the surface roughness Ra value of the cladding layer by adopting a three-dimensional appearance instrument; carrying out mechanical property test on the surface of the cladding layer by adopting a nano indentation instrument, controlling the maximum indentation depth to be 3 mu m in the indentation test, and obtaining the indentation hardness and the elastic modulus of the surface of the repairing layer after precision machining by the test; the wear resistance of the cladding layer is tested by using a UMT-3 type wear testing machine, a ball/disc contact reciprocating wear mode is adopted, a dual ball is a GCr15 steel ball with the diameter of 4mm, the load is 5N, the reciprocating stroke is 2mm, the reciprocating frequency is 5Hz, the wear time is 30min, and the ball/disc type wear testing machine is in room temperature atmosphere and dry friction.
The detection results are as follows:
hardness, elastic modulus, elastoplasticity and toughness are important indexes for evaluating mechanical properties of materials, wherein the ratio (H/E) of the hardness to the elastic modulus of the materials is called a plasticity index and represents the capability of the materials to resist elastic deformation, and can be used for representing the wear resistance of coating materials. H 3 /E 2 Is an important index for measuring the plastic deformation resistance of the material, and can represent the toughness of the material. From the above data, the resin grinding wheel prepared by the embodiment of the invention is applied to the finish grinding process link of the repair layer, so that the remanufactured repair layer can obtain the surface roughness consistent with that of the common finish grinding wheel (CBN grinding wheel) in the grinding process; meanwhile, the surface hardness, elastoplasticity and toughness of the repairing layer are synchronously improved on line, so that the mechanical properties of the surface are enhanced to a certain extent; the abrasion test data further show that the abrasion resistance of the repairing layer is greatly improved, and the tribological performance is improved.
While the invention has been described and illustrated with reference to specific embodiments thereof, the description and illustration is not intended to limit the invention. It will be apparent to those skilled in the art that various changes may be made in this particular situation, material, composition of matter, substance, method or process without departing from the true spirit and scope of the invention as defined by the following claims, so as to adapt the objective, spirit and scope of the present application. All such modifications are intended to be within the scope of this appended claims. Although the methods disclosed herein have been described with reference to particular operations being performed in a particular order, it should be understood that these operations may be combined, sub-divided, or reordered to form an equivalent method without departing from the teachings of the present disclosure. Thus, unless specifically indicated herein, the order and grouping of operations is not a limitation of the present application.
Claims (6)
1. A resin grinding wheel comprising:
30-45wt% of hard abrasive;
10-30wt% of soft abrasive;
3-6wt% of a lubricant;
1-5wt% of friction accelerator;
4-6wt% of a coupling agent;
15-30wt% of a binding agent;
the balance is filler;
the hard abrasive comprises: a first abrasive and a second abrasive;
the first abrasive is one or more selected from diamond, cubic boron nitride and corundum;
the second abrasive is boron powder;
the mass content of the first abrasive in the hard abrasive is 50-80%;
the mass content of the second abrasive in the hard abrasive is 20-50%;
the soft abrasive is serpentine mineral powder;
the friction accelerator includes:
lanthanum borate and cerium borate;
the friction accelerator can promote the friction chemical reaction between the metal material on the surface of the forming layer with high-speed friction and serpentine in the grinding process, promote the dehydration reaction of the serpentine at high temperature and promote the surface strengthening process of the forming layer.
2. The resin grinding wheel of claim 1, wherein said lubricant comprises:
molybdenum disulfide and polytetrafluoroethylene.
3. The resin grinding wheel according to claim 1, wherein the coupling agent is a silane coupling agent;
the bonding agent is phenolic resin;
the filler is cryolite.
4. A method of making the resin grinding wheel of claim 1, comprising:
mixing a hard abrasive, a soft abrasive, a lubricant, a friction accelerator, a coupling agent, a binding agent and a filler to obtain composite powder;
and carrying out hot press molding on the composite powder to obtain the resin grinding wheel.
5. The method of claim 4, wherein the composite powder has a particle size of 30-50 microns;
the hot press molding includes: and (5) curing after pressing.
6. A remanufactured layer machined from the resin grinding wheel of claim 1 or the resin grinding wheel prepared by the method of claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210723102.0A CN115056149B (en) | 2022-06-24 | 2022-06-24 | Resin grinding wheel and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210723102.0A CN115056149B (en) | 2022-06-24 | 2022-06-24 | Resin grinding wheel and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115056149A CN115056149A (en) | 2022-09-16 |
| CN115056149B true CN115056149B (en) | 2024-01-26 |
Family
ID=83201430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210723102.0A Active CN115056149B (en) | 2022-06-24 | 2022-06-24 | Resin grinding wheel and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115056149B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04269172A (en) * | 1991-02-20 | 1992-09-25 | Mitsubishi Heavy Ind Ltd | Resin bond super abrasive grain grinding wheel |
| JPH0550379A (en) * | 1991-08-23 | 1993-03-02 | Toshiba Tungaloy Co Ltd | Resin bond grinding wheel for metal precision grinding |
| RU94044399A (en) * | 1994-12-15 | 1996-11-20 | Товарищество с ограниченной ответственностью "ВСВ" | Method of modification of friction surfaces |
| KR20040048050A (en) * | 2002-12-02 | 2004-06-07 | 이화다이아몬드공업 주식회사 | Abrasion Wheel and Method for Manufacturing It |
| WO2007139442A1 (en) * | 2006-06-01 | 2007-12-06 | Obschestvo S Ogranichennoi Otvetstvennostuy 'vmpavto' | Finishing lapping concentrate containing modifying mineral fillers |
| CN101148035A (en) * | 2007-11-06 | 2008-03-26 | 浙江工业大学 | Soft/hard abrasive grain mixed semi-fixation abrasive grain grinding tool |
| JP2008229794A (en) * | 2007-03-22 | 2008-10-02 | Mizuho:Kk | Super-abrasive metal bonded grinding wheel |
| CN101691028A (en) * | 2009-09-22 | 2010-04-07 | 武汉法山磨料磨具有限公司 | Manufacturing method for resin grinding wheel cutting piece with function of cutting soft and hard materials |
| CN103648719A (en) * | 2012-06-21 | 2014-03-19 | 日本精工株式会社 | Superfinishing whetstone, superfinishing method using same, and ball bearing |
| CN105234842A (en) * | 2015-10-12 | 2016-01-13 | 长沙岱勒新材料科技股份有限公司 | Diamond resin grinding tool material and diamond resin grinding wheel |
| CN109015425A (en) * | 2018-06-26 | 2018-12-18 | 郑州磨料磨具磨削研究所有限公司 | A kind of resin bond wheel and preparation method thereof |
| CN110342853A (en) * | 2019-08-14 | 2019-10-18 | 杨凌美畅新材料股份有限公司 | A kind of diamond-resin grinding wheel for silicon materials grinding |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002020218A2 (en) * | 2000-09-08 | 2002-03-14 | 3M Innovative Properties Company | Abrasive sheet, method of manufacturing the same and method to abrade a fiber optic connector |
| US7344573B2 (en) * | 2003-11-06 | 2008-03-18 | Saint-Gobain Abrasives Technology Company | Impregnation of grinding wheels using supercritical fluids |
-
2022
- 2022-06-24 CN CN202210723102.0A patent/CN115056149B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04269172A (en) * | 1991-02-20 | 1992-09-25 | Mitsubishi Heavy Ind Ltd | Resin bond super abrasive grain grinding wheel |
| JPH0550379A (en) * | 1991-08-23 | 1993-03-02 | Toshiba Tungaloy Co Ltd | Resin bond grinding wheel for metal precision grinding |
| RU94044399A (en) * | 1994-12-15 | 1996-11-20 | Товарищество с ограниченной ответственностью "ВСВ" | Method of modification of friction surfaces |
| KR20040048050A (en) * | 2002-12-02 | 2004-06-07 | 이화다이아몬드공업 주식회사 | Abrasion Wheel and Method for Manufacturing It |
| WO2007139442A1 (en) * | 2006-06-01 | 2007-12-06 | Obschestvo S Ogranichennoi Otvetstvennostuy 'vmpavto' | Finishing lapping concentrate containing modifying mineral fillers |
| JP2008229794A (en) * | 2007-03-22 | 2008-10-02 | Mizuho:Kk | Super-abrasive metal bonded grinding wheel |
| CN101148035A (en) * | 2007-11-06 | 2008-03-26 | 浙江工业大学 | Soft/hard abrasive grain mixed semi-fixation abrasive grain grinding tool |
| CN101691028A (en) * | 2009-09-22 | 2010-04-07 | 武汉法山磨料磨具有限公司 | Manufacturing method for resin grinding wheel cutting piece with function of cutting soft and hard materials |
| CN103648719A (en) * | 2012-06-21 | 2014-03-19 | 日本精工株式会社 | Superfinishing whetstone, superfinishing method using same, and ball bearing |
| CN105234842A (en) * | 2015-10-12 | 2016-01-13 | 长沙岱勒新材料科技股份有限公司 | Diamond resin grinding tool material and diamond resin grinding wheel |
| CN109015425A (en) * | 2018-06-26 | 2018-12-18 | 郑州磨料磨具磨削研究所有限公司 | A kind of resin bond wheel and preparation method thereof |
| CN110342853A (en) * | 2019-08-14 | 2019-10-18 | 杨凌美畅新材料股份有限公司 | A kind of diamond-resin grinding wheel for silicon materials grinding |
Non-Patent Citations (3)
| Title |
|---|
| 应用软磨料磨削的单晶硅超精密制造技术;金钊;李锦胜;康仁科;张继友;王永刚;孟晓辉;;光电工程;第38卷(第12期);第75-80+84页 * |
| 新型树脂磨块的研制;华勇;郑州工业高等专科学校学报;第12卷(第02期);第10-13页 * |
| 树脂金刚石砂轮加工氧化铝陶瓷的磨削工艺试验研究;刘杰;《金刚石与磨料磨具工程》;第36卷(第4期);第79-83页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115056149A (en) | 2022-09-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101550976B (en) | Environment-friendly ceramic brake and manufacturing technique thereof | |
| CN110076322B (en) | Ceramic reinforced steel-based wear-resistant composite material and preparation method thereof | |
| CN102814747B (en) | A kind of CBN resin wheel and preparation method thereof | |
| CN105798782B (en) | Diamond resin grinding wheel and preparation method thereof | |
| CN108839640B (en) | Grinder for high-speed motor train unit and preparation method thereof | |
| CN110438487A (en) | Wear-resistant corrosion-resistant laser cladding layer of a kind of micro-nano granules enhancing and preparation method thereof | |
| CN102352899B (en) | Low-noise powder metallurgy brake pad and preparation method thereof | |
| CN109015425B (en) | Resin binder grinding wheel and preparation method thereof | |
| CN101280683A (en) | Coal excavating mining pick inlaid with diamond and manufacturing process thereof | |
| CN107043882B (en) | A kind of preparation method of diamond composite | |
| Du et al. | Selective laser sintering and grinding performance of resin bond diamond grinding wheels with arrayed internal cooling holes | |
| Luo et al. | Analysis of the wear of a resin-bonded diamond wheel in the grinding of tungsten carbide | |
| WO2023151245A1 (en) | Surface friction treatment method for ceramic reinforced aluminum-based composite material brake disc | |
| CN1562569A (en) | Superhard abrasive grinding wheel of metal binding agent eletrolyzable online, and preparation method | |
| CN101069961B (en) | Re-griding-cutting cube boron-nitride grinding-block device | |
| CN1908038B (en) | Nano material brake slice and preparing process thereof | |
| Biao et al. | Grain erosion wear properties and grinding performance of porous aggregated cubic boron nitride abrasive wheels | |
| CN115056149B (en) | Resin grinding wheel and preparation method and application thereof | |
| CN113373439B (en) | Composite coating for improving surface wear resistance of 35CrMoV steel and preparation method thereof | |
| CN105907370B (en) | A kind of environment-friendly type high performance friction material composition | |
| CN112756613A (en) | Grinding wheel for high-strength and high-hardness ceramic processing and preparation method thereof | |
| CN110564367A (en) | Preparation of viscoelastic silicon carbide abrasive for honing aluminum alloy hub | |
| CN105382709A (en) | Hard alloy grinding diamond grinding wheel and preparing method | |
| CN108240407A (en) | High-effect brake lining friction material of rail traffic vehicles and preparation method thereof | |
| Ghalme et al. | Multi-response optimization of drilling parameters for aluminum metal matrix composite using entropy weighted grey relational analysis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |