CN101456167A - Preparation method of alumina base full-abrasive consolidation grinding device - Google Patents
Preparation method of alumina base full-abrasive consolidation grinding device Download PDFInfo
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- CN101456167A CN101456167A CNA2008102364990A CN200810236499A CN101456167A CN 101456167 A CN101456167 A CN 101456167A CN A2008102364990 A CNA2008102364990 A CN A2008102364990A CN 200810236499 A CN200810236499 A CN 200810236499A CN 101456167 A CN101456167 A CN 101456167A
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Abstract
The invention discloses a method for preparing an alumina-based full-abrasive bonded abrasive tool. The method is carried out according to the following steps: taking a precursor of abrasive and adhesive by the mass percentage of 250:1, mixing and abrading the abrasive and the adhesive, performing press forming on the abrasive and the adhesive, and obtaining an alumina blank; presintering the alumina blank for 2 hours at a temperature of 1,100DEG C, cooling the alumina blank and obtaining a blank material; abrading and crushing the blank material, screening the blank through a screen cloth with 1,250 to 2,500 meshes, and obtaining alumina granules with the granule diameter of between 5 and 10mu m; taking the alumina granules, the adhesive and a pore-forming agent in mass ratio of 300:1.2:50, mixing and abrading the three compositions, performing press forming, and obtaining an blank to be sintered; and sintering the blank to be sintered without pressure, then cutting and forming the blank, and obtaining the alumina-based full-abrasive bonded abrasive tool. The method for preparing the alumina-based full-abrasive bonded abrasive tool can ensure the processing efficiency, improve the grinding efficiency and service life of the abrasive tool simultaneously, and realize the high-efficiency precise and super precise processing.
Description
Technical field
The invention belongs to the accurate ultra processing technique field, relate to a kind of preparation method of grinding tool, be specifically related to a kind of preparation method of alumina base full-abrasive consolidation grinding device.
Background technology
Grinding tool is the indispensable important materials of machinery manufacturing industry.Along with the transfer of world's machinery manufacturing industry to China, the development of Chinese machinery manufacturing industry will consume a large amount of grinding tool materials, simultaneously also to the quality and the demands for higher performance of grinding tool.But for a long time, the development of China's grinding tool industry is slow relatively, particularly the research and development of meticulous grinding tool with produce and world level has sizable gap, as at present domestic production military project (as Aeronautics and Astronautics, tank, aircraft carrier helical gear, bevel gear etc.), rail transport, wind-powered electricity generation and the employed lathe of accurate manufacturing (as high-grade automobile), the bearing of being applicable to, the high-end grinding tool of parts such as gear depends on import substantially.Therefore, the research of high-performance grinding tool will provide in kind for the machine building industry of China with production and support, and promotes machine building industry greatly, particularly the development of precision optical machinery process industry and national defense industry.
Common grinding tool is made up of main material abrasive material (grinding force is provided), binding agent (providing cohesive force to make grinding tool that sufficient intensity be arranged) and pore (provide and hold bits and cooling capacity) three parts.And complete wear material grinding tool is a kind of brand-new technology, and this grinding tool adopts the formed in situ technology to produce, and has realized the integrated of abrasive material and binding agent, has simplified the preparation technology of grinding tool, has increased the relative amount of abrasive material and pore.The increase of air vent content helps improving the appearance bits and the cooling capacity of grinding tool, and the increase of abrasive material content improves the performance and the service life of grinding tool.Owing to do not re-use organic resin or ceramic-like binding agent, grinding tool is more likely realized high temperature, high speed and accurate grinding.The production technology of this simplification can also cut down the consumption of energy, and reduces the discharging of waste water, spent acid alkali in the production process, realizes the production of the high-performance grinding tool of environment protection, low cost.But the preparation method of existing complete wear material grinding tool can't take into account machining accuracy and working (machining) efficiency.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of alumina base full-abrasive consolidation grinding device, prepare by alumina abrasive and pore grinding tool dimerous, solved the problem that to take into account machining accuracy and working (machining) efficiency of existing abrasive grain abrasive tools manufacture method.
The technical solution adopted in the present invention is, a kind of preparation method of alumina base full-abrasive consolidation grinding device specifically implements according to following steps:
Step 1: get alumina-based abrasive precursor and adhesive by mass ratio 250:1, fully mixed grinding is even, and compression moulding obtains aluminium oxide idiosome to be sintered;
Step 2: the aluminium oxide idiosome that step 1 is made was in 1100 ℃ of presintering 2 hours, and cooling obtains the idiosome material;
Step 3: the idiosome material that step 2 is made grinds broken, and with the processing of sieving of 1250～2500 purpose screen clothes, obtains the alumina particle of particle diameter at 5～10 μ m;
Step 4: get alumina particle, adhesive and the pore former that step 3 makes by mass ratio 300:1.2:50, fully mixed grinding is even, and compression moulding obtains idiosome to be sintered;
Step 5: the idiosome to be sintered that step 4 is made carries out pressureless sintering, and temperature rises to 500 ℃ from room temperature in first hour, and temperature rises to 1650 ℃ from 500 ℃ in second hour, is incubated 3 hours subsequently, obtains sintered body;
Step 6: the sintered body cutting shaping with step 5 makes obtains alumina base full-abrasive consolidation grinding device.
The preparation method of alumina base full-abrasive consolidation grinding device of the present invention, its feature also be,
Alumina-based abrasive precursor is wherein chosen the γ attitude aluminium oxide of particle diameter 8～12nm.
Adhesive is wherein chosen one or more the mixture in starch based adhesive, resinae adhesive, natural polymer subclass adhesive or the cellulose family adhesive.
Pore former is wherein chosen a kind of in ammonium carbonate, carbonic hydroammonium, naphthalene or the sawdust.
The preparation method of alumina base full-abrasive consolidation grinding device of the present invention, has realized accurate ultra processing efficiently at grinding efficiency and the service life that can improve grinding tool when guaranteeing high working (machining) efficiency.
Description of drawings
Fig. 1 is the process chart of the inventive method.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
The technological process of the inventive method is specifically implemented according to following steps as shown in Figure 1:
Step 1: get abrasive material precursor and adhesive by mass ratio 250:1, fully mixed grinding is even, at diameter is compression moulding under 40Mpa pressure in the cylindrical grinding tool of 30mm, obtain aluminium oxide idiosome to be sintered, the abrasive material precursor is chosen the γ attitude aluminium oxide of particle diameter 8～12nm, and adhesive is chosen one or more the mixture in starch based adhesive, resinae adhesive, natural polymer subclass adhesive or the cellulose family adhesive;
Step 2: the aluminium oxide idiosome that step 1 makes is put into high temperature furnace in 1100 ℃ of presintering 2 hours, and sintering finishes the back with the stove cooling, obtains the idiosome material;
Step 3: with the idiosome material that step 2 makes, be placed in the mortar and grind brokenly, and, obtain the alumina particle of particle diameter at 5～10 μ m with the processing of sieving of 1250～2500 purpose screen clothes;
Step 4: get alumina particle, adhesive and the pore former that step 3 makes by mass ratio 300:1.2:50, mix and fully grind evenly, compression moulding under 50Mpa pressure in the cylindrical grinding tool of diameter 80mm, obtain idiosome to be sintered, adhesive is chosen one or more the mixture in starch based adhesive, resinae adhesive, natural polymer subclass adhesive or the cellulose family adhesive, and pore former is chosen a kind of in ammonium carbonate, carbonic hydroammonium, naphthalene or the sawdust;
Step 5: the idiosome to be sintered that step 4 is made places high temperature furnace to carry out pressureless sintering, and temperature rises to 500 ℃ from room temperature in first hour, makes the adhesive oxidation Decomposition; Temperature rises to 1650 ℃ from 500 ℃ in the second hour, is incubated 3 hours subsequently, makes pore former decompose, and obtains sintered body.
Step 6: the sintered body that step 5 is made cuts shaping with bite, obtains alumina base full-abrasive consolidation grinding device.
Embodiment 1
Getting the γ attitude alumina powder of 500g particle diameter 8～12nm, the starch based adhesive aqueous solution of 40mL5wt%, mix and fully to grind evenly, is compression moulding under 40Mpa pressure in the cylindrical grinding tool of 30mm at diameter, obtains aluminium oxide idiosome to be sintered; The aluminium oxide idiosome is put into high temperature furnace in 1100 ℃ of presintering 2 hours, and sintering finishes the back with the stove cooling, obtains the idiosome material; The idiosome material is placed in the mortar grinds brokenly, and with the processing of sieving of 1250 purpose screen clothes, obtaining particle diameter is the alumina abrasive particle of 10 μ m; Get starch based adhesive and the 50g ammonium carbonate pore former of 300g alumina abrasive particle, 24mL 5wt%, mix fully and grind evenly, compression moulding under 50Mpa pressure in the cylindrical grinding tool of diameter 80mm obtains idiosome to be sintered; Place high temperature furnace to carry out pressureless sintering idiosome to be sintered, temperature rises to 500 ℃ from room temperature in first hour, makes the adhesive oxidation Decomposition; Temperature rises to 1650 ℃ from 500 ℃ in the second hour, is incubated 3 hours subsequently, makes pore former decompose, and obtains sintered body.Sintered body is cut shaping with bite, obtain the alumina base full-abrasive consolidation grinding device that diameter is 40mm.
The maximum speed that the alumina base full-abrasive consolidation grinding device that present embodiment makes can bear is 300rpm, and suitable processing load is 0.2～0.8Mpa, and appropriate rotating speed is 20～250rpm.Be used for the high precision plane processing of stainless steel work-piece, material removing rate can obtain the smooth flat of Ra0.01 μ m in 30 minutes in 0.3～3.0 mu m range.
Embodiment 2
Getting the γ attitude alumina powder of 500g particle diameter 8～12nm, the resinae adhesive aqueous solution of 40mL 5wt%, mix and fully to grind evenly, is compression moulding under 40Mpa pressure in the cylindrical grinding tool of 30mm at diameter, obtains aluminium oxide idiosome to be sintered; The aluminium oxide idiosome is put into high temperature furnace in 1100 ℃ of presintering 2 hours, and sintering finishes the back with the stove cooling, obtains the idiosome material; The idiosome material is placed in the mortar grinds brokenly, and with the processing of sieving of 2500 purpose screen clothes, obtaining particle diameter is the alumina abrasive particle of 5 μ m; Get resinae adhesive and the 50g carbonic hydroammonium pore former of 300g alumina abrasive particle, 24mL 5wt%, mix fully and grind evenly, compression moulding under 50Mpa pressure in the cylindrical grinding tool of diameter 80mm obtains idiosome to be sintered; Place high temperature furnace to carry out pressureless sintering idiosome to be sintered, temperature rises to 500 ℃ from room temperature in first hour, makes the adhesive oxidation Decomposition; Temperature rises to 1650 ℃ from 500 ℃ in the second hour, is incubated 3 hours subsequently, makes pore former decompose, and obtains sintered body.Sintered body is cut shaping with bite, obtain the alumina base full-abrasive consolidation grinding device that diameter is 40mm.
The maximum speed that the alumina base full-abrasive consolidation grinding device that present embodiment makes can bear is 320rpm, and suitable processing load is 0.2～0.9Mpa, and appropriate rotating speed is 20～280rpm.Be used for the high precision plane processing of stainless steel work-piece, material removing rate can obtain the smooth flat of Ra0.008 μ m in 30 minutes in 0.3～2.9 mu m range.
Embodiment 3
Get the γ attitude alumina powder of 500g particle diameter 8～12nm, the natural polymer subclass adhesive aqueous solution of 40mL 5wt%, mix and fully grind evenly, at diameter is compression moulding under 40Mpa pressure in the cylindrical grinding tool of 30mm, obtains aluminium oxide idiosome to be sintered; The aluminium oxide idiosome is put into high temperature furnace in 1100 ℃ of presintering 2 hours, and sintering finishes the back with the stove cooling, obtains the idiosome material; The idiosome material is placed in the mortar grinds brokenly, and with the processing of sieving of 2000 purpose screen clothes, obtaining particle diameter is the alumina abrasive particle of 6 μ m; Get natural polymer subclass adhesive and the 50g naphthalene powder pore former of 300g alumina abrasive particle, 24mL 5wt%, mix fully and grind evenly, compression moulding under 50Mpa pressure in the cylindrical grinding tool of diameter 80mm obtains idiosome to be sintered; Place high temperature furnace to carry out pressureless sintering idiosome to be sintered, temperature rises to 500 ℃ from room temperature in first hour, makes the adhesive oxidation Decomposition; Temperature rises to 1650 ℃ from 500 ℃ in the second hour, is incubated 3 hours subsequently, makes pore former decompose, and obtains sintered body.Sintered body is cut shaping with bite, obtain the alumina base full-abrasive consolidation grinding device that diameter is 40mm.
The maximum speed that the alumina base full-abrasive consolidation grinding device that present embodiment makes can bear is 250rpm, and suitable processing load is 0.2～0.6Mpa, and appropriate rotating speed is 20～220rpm.Be used for the high precision plane processing of stainless steel work-piece, material removing rate can obtain the smooth flat of Ra0.016 μ m in 30 minutes in 0.3～2.5 mu m range.
Embodiment 4
Get the mixture of the resinae adhesive of the cellulose family adhesive aqueous solution of γ attitude alumina powder, 40mL 5wt% of 500g particle diameter 8～12nm and 5wt%, mix and fully grind evenly, at diameter is compression moulding under 40Mpa pressure in the cylindrical grinding tool of 30mm, obtains aluminium oxide idiosome to be sintered; The aluminium oxide idiosome is put into high temperature furnace in 1100 ℃ of presintering 2 hours, and sintering finishes the back with the stove cooling, obtains the idiosome material; The idiosome material is placed in the mortar grinds brokenly, and with the processing of sieving of 1250 purpose screen clothes, obtaining particle diameter is the alumina abrasive particle of 10 μ m; Get mixture, the 50g sawdust pore former of the resinae adhesive of the cellulose family adhesive of 300g alumina abrasive particle, 24mL5wt% and 5wt%, mix and fully grind evenly, compression moulding under 50Mpa pressure in the cylindrical grinding tool of diameter 80mm obtains idiosome to be sintered; Place high temperature furnace to carry out pressureless sintering idiosome to be sintered, temperature rises to 500 ℃ from room temperature in first hour, makes the adhesive oxidation Decomposition; Temperature rises to 1650 ℃ from 500 ℃ in the second hour, is incubated 3 hours subsequently, makes pore former decompose, and obtains sintered body.Sintered body is cut shaping with bite, obtain the alumina base full-abrasive consolidation grinding device that diameter is 40mm.
The maximum speed that the alumina base full-abrasive consolidation grinding device that present embodiment makes can bear is 220rpm, and suitable processing load is 0.2～0.65Mpa, and appropriate rotating speed is 20～200rpm.Be used for the high precision plane processing of stainless steel work-piece, material removing rate can obtain the smooth flat of Ra0.02 μ m in 30 minutes in 0.3～2.2 mu m range.
The alumina base full-abrasive consolidation grinding device of the inventive method preparation, itself to be that binding agent bonds mutually, the mass percent of abrasive material and pore is: abrasive material 50%～80%, pore 20%～50% between the abrasive particle.
The inventive method has realized the integrated of abrasive material and binding agent, has simplified preparation technology, has increased the relative amount of abrasive material and pore, thereby helps improving appearance bits, cooling capacity, performance and the service life of grinding tool.Owing to do not re-use organic resin or ceramic-like binding agent, grinding tool is more likely realized high temperature, high speed and accurate grinding.The production technology of this simplification can also cut down the consumption of energy, and reduces the discharging of waste water, spent acid alkali in the production process, realizes the production of the high-performance grinding tool of environment protection, low cost.
Claims (4)
1. the preparation method of an alumina base full-abrasive consolidation grinding device is characterized in that, specifically implements according to following steps:
Step 1: get alumina-based abrasive precursor and adhesive by mass ratio 250:1, fully mixed grinding is even, and compression moulding obtains aluminium oxide idiosome to be sintered;
Step 2: the aluminium oxide idiosome that step 1 is made was in 1100 ℃ of presintering 2 hours, and cooling obtains the idiosome material;
Step 3: the idiosome material that step 2 is made grinds broken, and with the processing of sieving of 1250～2500 purpose screen clothes, obtains the alumina particle of particle diameter at 5～10 μ m;
Step 4: get alumina particle, adhesive and the pore former that step 3 makes by mass ratio 300:1.2:50, fully mixed grinding is even, and compression moulding obtains idiosome to be sintered;
Step 5: the idiosome to be sintered that step 4 is made carries out pressureless sintering, and temperature rises to 500 ℃ from room temperature in first hour, and temperature rises to 1650 ℃ from 500 ℃ in second hour, is incubated 3 hours subsequently, obtains sintered body;
Step 6: the sintered body cutting shaping with step 5 makes obtains alumina base full-abrasive consolidation grinding device.
2. preparation method according to claim 1 is characterized in that, described alumina-based abrasive precursor is chosen the γ attitude aluminium oxide of particle diameter 8～12nm.
3. preparation method according to claim 1 is characterized in that, described adhesive is chosen one or more the mixture in starch based adhesive, resinae adhesive, natural polymer subclass adhesive or the cellulose family adhesive.
4. preparation method according to claim 1 is characterized in that, described pore former is chosen a kind of in ammonium carbonate, carbonic hydroammonium, naphthalene or the sawdust.
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| CN106187179A (en) * | 2016-07-14 | 2016-12-07 | 广东省材料与加工研究所 | A kind of wear-resistant ZrO2al2o3complex phase ceramic granule and its preparation method and application |
| CN106187179B (en) * | 2016-07-14 | 2019-01-29 | 广东省材料与加工研究所 | One kind is wear-resistant to use ZrO2-Al2O3Complex phase ceramic particle and its preparation method and application |
| CN109719633A (en) * | 2019-01-25 | 2019-05-07 | 广州金谷钻石工具有限公司 | A kind of pore forming particles and production method of cutter head |
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