CN115338784A - Wear-resistant grinding wheel grinding tool and preparation process thereof - Google Patents
Wear-resistant grinding wheel grinding tool and preparation process thereof Download PDFInfo
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- CN115338784A CN115338784A CN202210928775.XA CN202210928775A CN115338784A CN 115338784 A CN115338784 A CN 115338784A CN 202210928775 A CN202210928775 A CN 202210928775A CN 115338784 A CN115338784 A CN 115338784A
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- 238000000227 grinding Methods 0.000 title claims abstract description 124
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 239000000835 fiber Substances 0.000 claims abstract description 72
- 239000000463 material Substances 0.000 claims abstract description 49
- 239000011521 glass Substances 0.000 claims abstract description 42
- 229910000677 High-carbon steel Inorganic materials 0.000 claims abstract description 36
- 239000010425 asbestos Substances 0.000 claims abstract description 36
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 36
- 238000002156 mixing Methods 0.000 claims abstract description 35
- 239000000843 powder Substances 0.000 claims abstract description 35
- 238000000498 ball milling Methods 0.000 claims abstract description 26
- 229910052582 BN Inorganic materials 0.000 claims abstract description 25
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 25
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 24
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 24
- 239000005011 phenolic resin Substances 0.000 claims abstract description 23
- 239000000919 ceramic Substances 0.000 claims abstract description 19
- 238000005507 spraying Methods 0.000 claims abstract description 19
- 238000007750 plasma spraying Methods 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 238000009941 weaving Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 238000005303 weighing Methods 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 239000010432 diamond Substances 0.000 claims description 38
- 229910003460 diamond Inorganic materials 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 21
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 21
- 229910001610 cryolite Inorganic materials 0.000 claims description 21
- 229910002804 graphite Inorganic materials 0.000 claims description 21
- 239000010439 graphite Substances 0.000 claims description 21
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 21
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 21
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 20
- 238000005245 sintering Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 239000011265 semifinished product Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 229910052580 B4C Inorganic materials 0.000 abstract description 2
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 abstract description 2
- 239000007767 bonding agent Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- 229910052574 oxide ceramic Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
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- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- 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
Abstract
The invention discloses a wear-resistant grinding wheel grinding tool and a preparation process thereof, wherein the preparation process comprises the following steps of firstly, weighing raw materials; step two, ball milling for preparing powder; step three, mixing the grinding materials; step four, weaving a sandwich layer; step five, mixing and stirring; step six, molding the sandwich; step seven, heating and curing; step eight, centrifugal spraying; according to the invention, the glass is ground into the glass micro powder, and the adhesive force of the glass micro powder in a molten state is utilized and the phenolic resin is used, so that the adhesive force of the glass micro powder to the grinding material is greatly improved; the asbestos fiber and the high-carbon steel fiber are woven into a net shape, the asbestos fiber net and the high-carbon steel fiber net are placed in the center of the grinding wheel grinding tool to form a sandwich layer, the structural strength and the toughness of the grinding wheel grinding tool are improved, alumina ceramic, boron carbide and boron nitride are added in the formula, and meanwhile, a ceramic wear-resistant layer is uniformly sprayed on the surface of the grinding wheel grinding tool by using a plasma spraying machine, so that the hardness and the wear resistance of the grinding wheel grinding tool are greatly enhanced.
Description
Technical Field
The invention relates to the technical field of grinding tools, in particular to a wear-resistant grinding wheel grinding tool and a preparation process thereof.
Background
The grinding tool is a tool for grinding, grinding and polishing, most grinding tools are artificial grinding tools made of grinding materials and bonding agents, and also natural grinding tools directly processed from natural ore rocks, the grinding tools are widely used in machinery manufacturing and other metal processing industries, and are also used in grain processing, paper making industry and processing of non-metal materials such as ceramics, glass, stone, plastics, rubber, wood and the like, the types of the grinding tools are more, the grinding wheel is also one of the grinding tools, the most common grinding tool in the grinding wheel grinding tool is a grinding tool with resin as a bonding agent, however, resin is used as the bonding agent only, the bonding capability is poor, the grinding materials are easy to fall off in the high-speed operation process, meanwhile, the existing grinding tool is poor in structural strength and toughness, the high-speed operation is easy to break and splash due to collision, the use safety of the grinding wheel grinding tool is greatly reduced, and the traditional grinding wheel grinding tool is serious in wear condition and poor in wear resistance in the use process.
Disclosure of Invention
The invention aims to provide a wear-resistant grinding wheel grinding tool and a preparation process thereof, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a wear resistant grinding wheel tool comprising in combination: diamond, alumina ceramics, boron nitride, glass, phenolic resin, cryolite, silicon carbide, graphite, titanium oxide and sandwich layer materials, wherein the weight parts of the components are as follows: 30-40 parts of diamond, 5-10 parts of alumina ceramic, 5-8 parts of boron nitride, 20-30 parts of glass, 20-30 parts of phenolic resin, 3-5 parts of cryolite, 3-5 parts of silicon carbide, 5-7 parts of graphite, 2-4 parts of titanium oxide and 20-30 parts of sandwich layer material.
Preferably, the sandwich layer material consists of high carbon steel fiber and asbestos fiber in a weight ratio of 1: 1.
A preparation process of a wear-resistant grinding wheel tool comprises the following steps of firstly, weighing raw materials; step two, ball milling for preparing powder; step three, mixing the grinding materials; step four, weaving the sandwich layer; step five, mixing and stirring; step six, mould pressing the sandwich; step seven, heating and curing; step eight, centrifugal spraying;
in the first step, 30-40 parts of diamond, 5-10 parts of alumina ceramic, 5-8 parts of boron nitride, 20-30 parts of glass, 20-30 parts of phenolic resin, 3-5 parts of cryolite, 3-5 parts of silicon carbide, 5-7 parts of graphite, 2-4 parts of titanium oxide and 20-30 parts of sandwich layer material are respectively weighed according to the parts by weight of the components;
in the second step, after the raw materials in the first step are weighed, the diamonds weighed in the first step are selected and put into a ball mill for ball milling until the particle size of the diamonds is between 50 and 100 meshes, and diamond powder is prepared for later use, and then the glass weighed in the first step is put into the ball mill for ball milling, and glass powder with 50 to 100 meshes is prepared for later use;
in the third step, after the ball milling in the second step is finished, a high-speed mixer is used, the diamond powder prepared in the second step and the alumina ceramic and the boron nitride weighed in the first step are put into the high-speed mixer, and then the diamond powder, the alumina ceramic and the boron nitride are mixed at high speed and are uniformly mixed to prepare the grinding material for later use;
taking the sandwich layer material weighed in the step one, and weaving high-carbon steel fibers and asbestos fibers in the sandwich layer material into nets respectively to prepare a high-carbon steel fiber net and an asbestos fiber net for later use;
in the fifth step, after the high-carbon steel fiber net and the asbestos fiber net in the fourth step are woven, putting the residual glass, phenolic resin, cryolite, silicon carbide, graphite and titanium oxide in the first step into a high-speed mixer for high-speed mixing, and uniformly mixing to prepare a mixture for later use;
taking a mold, putting half of the mixture prepared in the step five into the mold, then dry-pressing the mixture into a rough blank, then placing the high-carbon steel fiber net and the asbestos fiber net prepared in the step four onto the dry-pressed rough blank, then pouring the rest mixture into the mold, covering the high-carbon steel fiber net and the asbestos fiber net, and dry-pressing the mixture into a sandwich rough blank for later use;
in the seventh step, after the preparation of the sandwich rough blank in the sixth step is finished, putting the sandwich rough blank into a high-temperature sintering furnace for sintering and solidifying, and cooling to room temperature after solidification is finished to prepare a semi-finished product of the wear-resistant grinding wheel and grinding tool for later use;
in the eighth step, after the wear-resistant grinding wheel tool in the seventh step is prepared, the ceramic is uniformly sprayed on the surface of the wear-resistant grinding wheel tool by using a plasma spraying machine, and a ceramic wear-resistant layer is formed after drying, so that the preparation of a finished wear-resistant grinding wheel tool is completed.
Preferably, in the second step, the rotating speed of the ball mill is 120-150r/min, and the ball milling time is 10-15h.
Preferably, in the third step, the rotating speed of the high-speed mixer is 1500-1600r/min, and the mixing time is 20-30min.
Preferably, in the fifth step, the rotating speed of the high-speed mixer is 800-1200r/min, and the mixing time is 30-40min.
Preferably, in the seventh step, the temperature of the high-temperature sintering furnace is 700-800 ℃, and the sintering time is 2-3h.
Preferably, the temperature of the plasma spraying machine is 350-450 ℃, the powder feeding spraying speed is 50-100g/min, and the spraying speed of the spray head to the grinding tool is 20-30mm/min.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, glass is ball-milled into glass micro powder, the adhesive force of the glass micro powder in a molten state is utilized, and the phenolic resin is used in a matching manner, so that the adhesive force to the grinding material is greatly improved, and the condition that the grinding material is removed is effectively reduced;
2. according to the invention, the asbestos fiber and the high-carbon steel fiber are woven into a net shape, and the asbestos fiber net and the high-carbon steel fiber net are placed in the center of the grinding wheel grinding tool to form the sandwich layer skeleton, so that the structural strength and toughness of the grinding wheel grinding tool are improved, and the occurrence of the condition of fracture and splashing of the grinding wheel grinding tool is reduced;
3. the aluminum oxide ceramic, the boron carbide and the boron nitride are added in the formula, so that the hardness and the wear resistance of the grinding wheel and grinding tool are greatly enhanced, and meanwhile, the ceramic wear-resistant layer is uniformly sprayed on the surface of the grinding wheel and grinding tool by using the plasma spraying machine, so that the wear resistance of the grinding wheel and grinding tool is further improved.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a technical solution provided by the present invention:
example 1:
a wear resistant grinding wheel tool comprising: diamond, alumina ceramics, boron nitride, glass, phenolic resin, cryolite, silicon carbide, graphite, titanium oxide and a sandwich layer material, wherein the weight parts of the components are as follows: 30 parts of diamond, 5 parts of alumina ceramic, 5 parts of boron nitride, 20 parts of glass, 20 parts of phenolic resin, 3 parts of cryolite, 3 parts of silicon carbide, 5 parts of graphite, 2 parts of titanium oxide and 20 parts of a sandwich layer material, wherein the sandwich layer material consists of high-carbon steel fibers and asbestos fibers in a weight ratio of 1: 1.
A preparation process of a wear-resistant grinding wheel tool comprises the following steps of firstly, weighing raw materials; step two, ball milling for preparing powder; step three, mixing the grinding materials; step four, weaving a sandwich layer; step five, mixing and stirring; step six, molding the sandwich; step seven, heating and curing; step eight, centrifugal spraying;
in the first step, 30 parts of diamond, 5 parts of alumina ceramic, 5 parts of boron nitride, 20 parts of glass, 20 parts of phenolic resin, 3 parts of cryolite, 3 parts of silicon carbide, 5 parts of graphite, 2 parts of titanium oxide and 20 parts of sandwich layer material are respectively weighed according to the parts by weight of the components;
in the second step, after the raw materials in the first step are weighed, the diamonds weighed in the first step are selected to be put into a ball mill for ball milling until the particle size of the diamonds is 50-100 meshes, diamond powder is prepared for standby, then the glass weighed in the first step is put into the ball mill for ball milling, the rotating speed of the ball mill is 150r/min, the ball milling time is 12 hours, and the glass powder with 50-100 meshes is prepared for standby;
in the third step, after the ball milling in the second step is finished, a high-speed mixer is used, the diamond powder prepared in the second step and the alumina ceramic and the boron nitride weighed in the first step are put into the high-speed mixer, then high-speed mixing is carried out, the rotating speed of the high-speed mixer is 1500r/min, the mixing time is 30min, and the grinding materials are prepared for standby after uniform mixing;
taking the sandwich layer material weighed in the step one, and weaving high-carbon steel fibers and asbestos fibers in the sandwich layer material into nets respectively to prepare a high-carbon steel fiber net and an asbestos fiber net for later use;
in the fifth step, after the high-carbon steel fiber net and the asbestos fiber net in the fourth step are woven, putting the residual glass, phenolic resin, cryolite, silicon carbide, graphite and titanium oxide in the first step into a high-speed mixer for high-speed mixing, and uniformly mixing to prepare a mixture for later use;
taking a mold, putting half of the mixture prepared in the step five into the mold, then dry-pressing the mixture into a rough blank, then placing the high-carbon steel fiber net and the asbestos fiber net prepared in the step four onto the dry-pressed rough blank, then pouring the rest mixture into the mold, covering the high-carbon steel fiber net and the asbestos fiber net, and dry-pressing the mixture into a sandwich rough blank for later use;
in the seventh step, after the preparation of the sandwich rough blank in the sixth step is finished, putting the sandwich rough blank into a high-temperature sintering furnace for sintering and curing, wherein the temperature of the high-temperature sintering furnace is 700 ℃, the sintering time is 2.5 hours, and after the curing is finished, cooling to room temperature to prepare a semi-finished product of the wear-resistant grinding wheel and grinding tool for later use;
in the eighth step, after the wear-resistant grinding wheel grinding tool in the seventh step is prepared, uniformly spraying ceramics on the surface of the wear-resistant grinding wheel grinding tool by using a plasma spraying machine, wherein the temperature of the plasma spraying machine is 450 ℃, the powder feeding and spraying speed is 80g/min, the spraying speed of a spray head on the grinding tool is 25mm/min, and a ceramic wear-resistant layer is formed after drying, so that the preparation of a finished wear-resistant grinding wheel grinding tool is completed.
Example 2:
a wear resistant grinding wheel tool comprising in combination: diamond, alumina ceramics, boron nitride, glass, phenolic resin, cryolite, silicon carbide, graphite, titanium oxide and a sandwich layer material, wherein the weight parts of the components are as follows: 35 parts of diamond, 8 parts of alumina ceramic, 6 parts of boron nitride, 25 parts of glass, 25 parts of phenolic resin, 4 parts of cryolite, 4 parts of silicon carbide, 6 parts of graphite, 3 parts of titanium oxide and 25 parts of sandwich layer material, wherein the sandwich layer material consists of high carbon steel fiber and asbestos fiber according to the weight part of 1: 1.
A preparation process of a wear-resistant grinding wheel tool comprises the following steps of firstly, weighing raw materials; step two, ball milling for preparing powder; step three, mixing the grinding materials; step four, weaving the sandwich layer; step five, mixing and stirring; step six, molding the sandwich; step seven, heating and curing; step eight, centrifugal spraying;
in the first step, 35 parts of diamond, 8 parts of alumina ceramic, 6 parts of boron nitride, 25 parts of glass, 25 parts of phenolic resin, 4 parts of cryolite, 4 parts of silicon carbide, 6 parts of graphite, 3 parts of titanium oxide and 25 parts of sandwich layer material are weighed respectively according to the parts by weight of the components;
in the second step, after the raw materials in the first step are weighed, the diamonds weighed in the first step are selected to be put into a ball mill for ball milling until the particle size of the diamonds is 50-100 meshes, diamond powder is prepared for standby, then the glass weighed in the first step is put into the ball mill for ball milling, the rotating speed of the ball mill is 150r/min, the ball milling time is 12 hours, and the glass powder with 50-100 meshes is prepared for standby;
in the third step, after the ball milling in the second step is finished, a high-speed mixer is used, the diamond powder prepared in the second step and the alumina ceramic and the boron nitride weighed in the first step are put into the high-speed mixer, then high-speed mixing is carried out, the rotating speed of the high-speed mixer is 1500r/min, the mixing time is 30min, and the grinding materials are prepared for standby after uniform mixing;
taking the sandwich layer material weighed in the step one, and weaving high-carbon steel fibers and asbestos fibers in the sandwich layer material into nets respectively to prepare a high-carbon steel fiber net and an asbestos fiber net for later use;
in the fifth step, after the high-carbon steel fiber net and the asbestos fiber net in the fourth step are woven, putting the residual glass, phenolic resin, cryolite, silicon carbide, graphite and titanium oxide in the first step into a high-speed mixer for high-speed mixing, and uniformly mixing to prepare a mixture for later use;
taking a mold, putting half of the mixture prepared in the step five into the mold, then dry-pressing the mixture into a rough blank, then placing the high-carbon steel fiber net and the asbestos fiber net prepared in the step four onto the dry-pressed rough blank, then pouring the rest mixture into the mold, covering the high-carbon steel fiber net and the asbestos fiber net, and dry-pressing the mixture into a sandwich rough blank for later use;
in the seventh step, after the preparation of the sandwich rough blank in the sixth step is finished, putting the sandwich rough blank into a high-temperature sintering furnace for sintering and curing, wherein the temperature of the high-temperature sintering furnace is 700 ℃, the sintering time is 2.5 hours, and after the curing is finished, cooling to room temperature to prepare a semi-finished product of the wear-resistant grinding wheel and grinding tool for later use;
in the eighth step, after the wear-resistant grinding wheel tool in the seventh step is prepared, uniformly spraying the ceramic on the surface of the wear-resistant grinding wheel tool by using a plasma spraying machine, wherein the temperature of the plasma spraying machine is 450 ℃, the powder feeding spraying speed is 80g/min, the spraying speed of a nozzle on the grinding tool is 25mm/min, and a ceramic wear-resistant layer is formed after drying, so that the preparation of the finished wear-resistant grinding wheel tool is completed.
Example 3:
a wear resistant grinding wheel tool comprising in combination: diamond, alumina ceramics, boron nitride, glass, phenolic resin, cryolite, silicon carbide, graphite, titanium oxide and sandwich layer materials, wherein the weight parts of the components are as follows: 40 parts of diamond, 10 parts of alumina ceramic, 8 parts of boron nitride, 30 parts of glass, 30 parts of phenolic resin, 5 parts of cryolite, 5 parts of silicon carbide, 7 parts of graphite, 4 parts of titanium oxide and 30 parts of sandwich layer material, wherein the sandwich layer material consists of high carbon steel fiber and asbestos fiber according to the weight part of 1: 1.
A preparation process of a wear-resistant grinding wheel tool comprises the following steps of firstly, weighing raw materials; step two, ball milling for preparing powder; step three, mixing the grinding materials; step four, weaving a sandwich layer; step five, mixing and stirring; step six, molding the sandwich; step seven, heating and curing; step eight, centrifugal spraying;
in the first step, 40 parts of diamond, 10 parts of alumina ceramic, 8 parts of boron nitride, 30 parts of glass, 30 parts of phenolic resin, 5 parts of cryolite, 5 parts of silicon carbide, 7 parts of graphite, 4 parts of titanium oxide and 30 parts of sandwich layer material are weighed respectively according to the parts by weight of the components;
in the second step, after the raw materials in the first step are weighed, the diamonds weighed in the first step are selected to be put into a ball mill for ball milling until the particle size of the diamonds is 50-100 meshes, diamond powder is prepared for standby, then the glass weighed in the first step is put into the ball mill for ball milling, the rotating speed of the ball mill is 150r/min, the ball milling time is 12 hours, and the glass powder with 50-100 meshes is prepared for standby;
in the third step, after the ball milling in the second step is finished, a high-speed mixer is used, the diamond powder prepared in the second step and the alumina ceramic and the boron nitride weighed in the first step are put into the high-speed mixer, then high-speed mixing is carried out, the rotating speed of the high-speed mixer is 1500r/min, the mixing time is 30min, and the grinding materials are prepared for standby after uniform mixing;
taking the sandwich layer material weighed in the step one, and weaving high-carbon steel fibers and asbestos fibers in the sandwich layer material into nets respectively to prepare a high-carbon steel fiber net and an asbestos fiber net for later use;
in the fifth step, after the high-carbon steel fiber net and the asbestos fiber net in the fourth step are woven, putting the residual glass, phenolic resin, cryolite, silicon carbide, graphite and titanium oxide in the first step into a high-speed mixer for high-speed mixing, and uniformly mixing to prepare a mixture for later use;
in the sixth step, a mould is taken, half of the mixture prepared in the fifth step is put into the mould, then the mixture is dry-pressed into a rough blank, then the high-carbon steel fiber net and the asbestos fiber net prepared in the fourth step are placed on the dry-pressed rough blank, then the rest mixture is poured into the mould, the high-carbon steel fiber net and the asbestos fiber net are covered, and the mixture is dry-pressed into a sandwich rough blank for standby;
in the seventh step, after the preparation of the sandwich rough blank in the sixth step is finished, putting the sandwich rough blank into a high-temperature sintering furnace for sintering and curing, wherein the temperature of the high-temperature sintering furnace is 700 ℃, the sintering time is 2.5 hours, and after the curing is finished, cooling to room temperature to prepare a semi-finished product of the wear-resistant grinding wheel and grinding tool for later use;
in the eighth step, after the wear-resistant grinding wheel tool in the seventh step is prepared, uniformly spraying the ceramic on the surface of the wear-resistant grinding wheel tool by using a plasma spraying machine, wherein the temperature of the plasma spraying machine is 450 ℃, the powder feeding spraying speed is 80g/min, the spraying speed of a nozzle on the grinding tool is 25mm/min, and a ceramic wear-resistant layer is formed after drying, so that the preparation of the finished wear-resistant grinding wheel tool is completed.
The properties of the examples are compared in the following table:
| example 1 | Example 2 | Example 3 | |
| Diamond (share) | 30 | 35 | 40 |
| Alumina ceramics (part) | 5 | 8 | 10 |
| Boron nitride (in) | 5 | 6 | 8 |
| Glass (in parts) | 20 | 25 | 30 |
| Phenol formaldehyde resin (share) | 20 | 25 | 30 |
| Cryolite (share) | 3 | 4 | 5 |
| Silicon carbide (in) | 3 | 4 | 5 |
| Graphite(share) | 5 | 6 | 7 |
| Titanium oxide (in) | 2 | 3 | 4 |
| Sandwich material (share) | 20 | 25 | 30 |
| Wear resistance | Is excellent in | Is excellent in | Is excellent in |
Based on the above, the invention greatly improves the binding power to the grinding material by grinding the glass balls into the glass micro powder, utilizes the binding power of the glass micro powder in a molten state and matching with the use of the phenolic resin, effectively reduces the situation of falling-off of the grinding material, simultaneously weaves asbestos fiber and high carbon steel fiber into a net shape, and places the asbestos fiber net and the high carbon steel fiber net into the center of the grinding wheel grinding tool to manufacture a sandwich layer, thereby improving the structural strength and toughness of the grinding wheel grinding tool, and reducing the situation of fracture and splashing of the grinding wheel grinding tool.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A wear resistant grinding wheel tool comprising in combination: diamond, alumina ceramics, boron nitride, glass, phenolic resin, cryolite, carborundum, graphite, titanium oxide and sandwich layer material, its characterized in that: the weight parts of the components are respectively as follows: 30-40 parts of diamond, 5-10 parts of alumina ceramic, 5-8 parts of boron nitride, 20-30 parts of glass, 20-30 parts of phenolic resin, 3-5 parts of cryolite, 3-5 parts of silicon carbide, 5-7 parts of graphite, 2-4 parts of titanium oxide and 20-30 parts of sandwich layer material.
2. A wear resistant grinding wheel tool according to claim 1 wherein: the sandwich layer material consists of high carbon steel fiber and asbestos fiber in the weight ratio of 1 to 1.
3. A preparation process of a wear-resistant grinding wheel tool comprises the following steps of firstly, weighing raw materials; step two, ball milling for preparing powder; step three, mixing the grinding materials; step four, weaving the sandwich layer; step five, mixing and stirring; step six, molding the sandwich; step seven, heating and curing; step eight, centrifugal spraying; the method is characterized in that:
in the first step, 30-40 parts of diamond, 5-10 parts of alumina ceramic, 5-8 parts of boron nitride, 20-30 parts of glass, 20-30 parts of phenolic resin, 3-5 parts of cryolite, 3-5 parts of silicon carbide, 5-7 parts of graphite, 2-4 parts of titanium oxide and 20-30 parts of sandwich layer material are respectively weighed according to the parts by weight of the components;
in the second step, after the raw materials in the first step are weighed, the diamonds weighed in the first step are selected and put into a ball mill for ball milling until the particle size of the diamonds is between 50 and 100 meshes, and diamond powder is prepared for later use, and then the glass weighed in the first step is put into the ball mill for ball milling, and glass powder with 50 to 100 meshes is prepared for later use;
in the third step, after the ball milling in the second step is finished, a high-speed mixer is used, the diamond powder prepared in the second step and the alumina ceramic and the boron nitride weighed in the first step are put into the high-speed mixer, and then the diamond powder, the alumina ceramic and the boron nitride are mixed at high speed and are uniformly mixed to prepare the grinding material for later use;
taking the sandwich layer material weighed in the step one, and weaving high-carbon steel fibers and asbestos fibers in the sandwich layer material into nets respectively to prepare a high-carbon steel fiber net and an asbestos fiber net for later use;
in the fifth step, after the high-carbon steel fiber net and the asbestos fiber net in the fourth step are woven, putting the residual glass, phenolic resin, cryolite, silicon carbide, graphite and titanium oxide in the first step into a high-speed mixer for high-speed mixing, and uniformly mixing to prepare a mixture for later use;
taking a mold, putting half of the mixture prepared in the step five into the mold, then dry-pressing the mixture into a rough blank, then placing the high-carbon steel fiber net and the asbestos fiber net prepared in the step four onto the dry-pressed rough blank, then pouring the rest mixture into the mold, covering the high-carbon steel fiber net and the asbestos fiber net, and dry-pressing the mixture into a sandwich rough blank for later use;
in the seventh step, after the preparation of the sandwich rough blank in the sixth step is finished, putting the sandwich rough blank into a high-temperature sintering furnace for sintering and solidifying, and cooling to room temperature after solidification is finished to prepare a semi-finished product of the wear-resistant grinding wheel and grinding tool for later use;
in the eighth step, after the wear-resistant grinding wheel tool in the seventh step is prepared, the ceramic is uniformly sprayed on the surface of the wear-resistant grinding wheel tool by using a plasma spraying machine, and a ceramic wear-resistant layer is formed after drying, so that the preparation of a finished wear-resistant grinding wheel tool is completed.
4. The process of claim 3 for the preparation of a wear resistant grinding wheel tool, wherein: in the second step, the rotating speed of the ball mill is 120-150r/min, and the ball milling time is 10-15h.
5. The process of claim 3 for the preparation of a wear resistant grinding wheel tool, wherein: in the third step, the rotating speed of the high-speed mixer is 1500-1600r/min, and the mixing time is 20-30min.
6. The process of claim 3 for the preparation of a wear resistant grinding wheel tool, wherein: in the fifth step, the rotating speed of the high-speed mixer is 800-1200r/min, and the mixing time is 30-40min.
7. The process of claim 3 for the preparation of a wear resistant grinding wheel tool, wherein: in the seventh step, the temperature of the high-temperature sintering furnace is 700-800 ℃, and the sintering time is 2-3h.
8. The process of claim 3 for the preparation of a wear resistant grinding wheel tool, wherein: the temperature of the plasma spraying machine is 350-450 ℃, the powder feeding spraying speed is 50-100g/min, and the spraying speed of the spray head to the grinding tool is 20-30mm/min.
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