Metal-ceramic bond diamond grinding wheel and production method thereof

A vitrified bond and diamond grinding wheel technology, which is applied in metal processing equipment, manufacturing tools, grinding/polishing equipment, etc., can solve the problems of low grinding temperature, low grinding calorific value, poor self-sharpening of grinding wheel, etc., and achieve improved Shape retention and wear resistance, improved grinding efficiency, and extended service life

Active Publication Date: 2014-04-02
长沙市萨普新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resin bond has low holding force on the diamond abrasive, the diamond abrasive grains are easy to fall off, the self-sharpening is good, the grinding wheel has high grinding efficiency, the grinding calorific value is small, and the roughness of the workpiece surface can be improved; but because the resin bond is an organic material , limited by the intrinsic properties of the resin, the heat resistance, water resistance, and wear resistance of the grinding wheel are poor, and precision forming grinding cannot be performed
The metal bonded diamond grinding wheel has high strength, good geometric shape retention of the working surface, long service life and impact resistance, but the self-sharpening of the grinding wheel is poor and the efficiency is low.
The vitrified bond diamond grinding wheel has strong grinding ability, low grinding temperature, and strong self-sharpening; however, since the currently used vitrified bond is a low-temperature ceramic inorganic material, a large amount of alkaline substances are introduced, which are easy to volatilize during the preparation of the bond As a result, the performance of the bond is unstable. In the manufacturing process of the diamond grinding wheel, the wettability of the bond to the diamond is poor, which greatly reduces the holding force of the bond to the diamond. The diamond is easy to fall off during the grinding process and the loss is large.

Method used

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  • Metal-ceramic bond diamond grinding wheel and production method thereof
  • Metal-ceramic bond diamond grinding wheel and production method thereof
  • Metal-ceramic bond diamond grinding wheel and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The steps of the test are:

[0038] 1) Preparation of particles composed of diamond cores and copper coatings coated on the surface of diamond cores

[0039] The diamond particles were successively placed in SnCl 2 solution and PdCl 2 The sensitization and activation treatments were carried out in the solution respectively; the treated diamond particles were uniformly dispersed in CuSO 4 In the mixed solution of the mixed slurry, so as to obtain the mixed slurry; add sodium hypophosphite to the mixed slurry to carry out the electroless plating of Cu on the surface of the diamond particles, to obtain a diamond core and a copper coating coated on the surface of the diamond core. and particles with an average particle size of 10 microns.

[0040] Wherein, the specific operation of preparing particulate matter is as follows:

[0041] A. Place the diamond core in 0.05mol / L SnCl 2 Soak in the solution for 5 minutes, then place in 0.05mol / L PdCl 2 Soak in the solution fo...

Embodiment 2

[0055] The steps of the test are:

[0056] 1) Preparation of particles composed of diamond cores and metal coatings coated on the surface of diamond cores

[0057] The diamond particles were successively placed in SnCl 2 solution and PdCl 2 The sensitization and activation treatments were carried out in the solution respectively; the treated diamond particles were uniformly dispersed in CuSO 4 In the mixed solution of the mixed slurry, so as to obtain the mixed slurry; add sodium hypophosphite to the mixed slurry to carry out the electroless plating of Cu on the surface of the diamond particles, to obtain a diamond core and a copper coating coated on the surface of the diamond core. and particles with an average particle size of 30 microns.

[0058] Wherein, the specific operation of preparing particulate matter is as follows:

[0059] A. Place the diamond core in 0.05mol / L SnCl 2 Soak in the solution for 5 minutes, then place 0.05mol / L in PdCl 2 Soak in the solution for...

Embodiment 3

[0073] The basic steps of the test are:

[0074] 1) Preparation of particles composed of diamond cores and metal coatings coated on the surface of diamond cores

[0075] The diamond particles were successively placed in SnCl 2 solution and PdCl 2 The sensitization and activation treatments were carried out in the solution respectively; the treated diamond particles were uniformly dispersed in CuSO 4 In the mixed solution of the mixed slurry, so as to obtain the mixed slurry; add sodium hypophosphite to the mixed slurry to carry out the electroless plating of Cu on the surface of the diamond particles, to obtain a diamond core and a copper coating coated on the surface of the diamond core. and particles with an average particle size of 50 microns.

[0076] Wherein, the specific operation of preparing particulate matter is as follows:

[0077] A. Place the diamond core in 0.05mol / L SnCl 2 Soak in the solution for 5 minutes, then place 0.05mol / L in PdCl 2 Soak in the soluti...

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Abstract

The invention discloses a novel metal-ceramic bond diamond grinding wheel having the high strength and form-holding property in metal bond grinding wheels and the high self-sharpening property in ceramic bond grinding wheels, and a production method thereof. The metal-ceramic bond diamond grinding wheel is produced by: 1, preparing powder mixture out of 60-70% of copper-plated diamond powder, 15-20% of (W, Ti)C powder, 5-10% of tin powder, and 5-15% of iron group powders; mixing according to the above components and ratio to obtain the powder mixture; 2, forming, namely pressing the powder mixture into blanks by pressure forming; 3, sintering, namely subjecting the blanks to inert atmosphere low-pressure sintering, heating the blanks to 850-1050DEG C during sintering, and holding the temperature for 10-30 minutes. The copper-plated diamond powder is composed of particles with average particle size of 5-80 micrometers, and the particles are composed of diamond cores and copper coatings covering the diamond cores. Inert atmosphere during sintering is 5-10Mpa.

Description

technical field [0001] The invention mainly relates to a diamond grinding wheel and a preparation method thereof, in particular to a cermet bonded diamond grinding wheel and a preparation method thereof. Background technique [0002] Diamond grinding wheel is to use diamond for high-precision and high-efficiency grinding, and use bonding agent to bond diamond abrasive grains and make abrasive tools with certain strength and shape. The binder used to consolidate diamond abrasive grains in diamond grinding wheels has three materials: resin, metal and ceramics. The resin bond has low holding force on the diamond abrasive, the diamond abrasive grains are easy to fall off, the self-sharpening is good, the grinding wheel has high grinding efficiency, the grinding calorific value is small, and the roughness of the workpiece surface can be improved; but because the resin bond is an organic material , limited by the intrinsic properties of the resin, the grinding wheel has poor heat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D18/00B24D3/14B24D3/06
Inventor 陈豫章李颖
Owner 长沙市萨普新材料有限公司
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