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Method for manufacturing brazing monolayer diamond grinding wheel

A single-layer diamond and manufacturing method technology, which is applied in the direction of manufacturing tools, metal processing equipment, abrasives, etc., can solve the problems of large thermal stress, diamond graphitization, etc., and achieve improved grinding performance, high thermal stability, and reduced thermal damage. Effect

Inactive Publication Date: 2014-05-14
禹州市和汇超硬材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the brazing temperature is generally around 1050°C, and Ni in the Ni-Cr alloy is an element that promotes diamond graphitization, which has high strength and hardness, so it is easy to cause diamond graphitization, large thermal stress, and eventually Causes greater thermal damage to the diamond

Method used

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  • Method for manufacturing brazing monolayer diamond grinding wheel

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Effect test

Embodiment 1

[0024] A method for manufacturing a brazed single-layer diamond grinding wheel. The matrix of the diamond grinding wheel is prepared by machining, and the matrix is ​​degreased and derusted. The matrix of the grinding wheel is No. 45 steel (the same below). The boron-containing diamond is 45-60 mesh, and its boron content is (50-260)×10 18 at / cm 3 , The amount of Cu-P alloy added in the solder is 2% of the mass of Ni-Cr-B-Si alloy, the content of P in Cu-P alloy is 7%, and the rest is Cu.

[0025] The boron-containing diamond used was obtained by the following method: adding 5wt% hexagonal boron nitride to the diamond synthesis powder, and using a hexagonal top press to synthesize boron-containing diamond at 1450°C and a pressure of 5.6Gpa.

[0026] Mechanically stir the solder for 15 minutes to mix well. Grinding wheel forming blanks were prepared in the order of grinding wheel substrate / brazing filler metal / diamond abrasive grains. Put the grinding wheel forming blank int...

Embodiment 2

[0028] The invention discloses a method for manufacturing a brazed single-layer diamond grinding wheel. The base body of the diamond grinding wheel is prepared by a machining method, and the base body is degreased and derusted. The mesh size of boron-containing diamond abrasive grains is 30-45, and its boron content is (50-260)×10 18 at / cm 3 , The amount of Cu-P alloy added in the solder is 3% of the mass of Ni-Cr-B-Si alloy, the content of P in Cu-P alloy is 10%, and the rest is Cu.

[0029] The boron-containing diamond used is obtained by the following method: adding 3wt% hexagonal boron nitride to the diamond synthesis powder, and using a six-sided top press to synthesize boron-containing diamond at 1420°C and a pressure of 5.7Gpa.

[0030] Mechanically stir the solder for 15 minutes to mix well. Grinding wheel forming blanks were prepared in the order of grinding wheel substrate / brazing filler metal / diamond abrasive grains. Put the grinding wheel blank into a protective...

Embodiment 3

[0032] The invention discloses a method for manufacturing a brazed single-layer diamond grinding wheel. The base body of the diamond grinding wheel is prepared by a machining method, and the base body is degreased and derusted. The mesh number of boron-containing diamond abrasive grains is 45-60, and its boron content is (50-260)×10 18 at / cm 3 , The amount of Cu-P alloy added to the solder is 5% of the mass of Ni-Cr-B-Si alloy, the content of P in Cu-P alloy is 8%, and the rest is Cu.

[0033] The boron-containing diamond used is obtained by the following method: adding 8wt% hexagonal boron nitride to the diamond synthesis powder, and using a six-sided top press to synthesize boron-containing diamond at 1500°C and a pressure of 5.5Gpa.

[0034] Mechanically stir the solder for 15 minutes to mix well. Grinding wheel forming blanks were prepared in the order of grinding wheel substrate / brazing filler metal / diamond abrasive grains. Put the grinding wheel forming blank into the...

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Abstract

The invention belongs to the field of super-hard abrasive material tools and particularly relates to a method for manufacturing a brazing monolayer diamond grinding wheel. Diamond is boracic diamond, and the content of boron in the diamond is (50-260)*1018 at / cm<3>. According to the method for manufacturing the brazing monolayer diamond grinding wheel, due to the fact that the boracic diamond is adopted, low thermal damage of the diamond is ensured with the high thermal stability of the boracic diamond, novel solder further reduces the thermal damage after the diamond is welded, and therefore the service life of the grinding wheel is prolonged, and the good grinding capability and the good cutting capability are achieved.

Description

[0001] technical field [0002] The invention belongs to the field of making superhard abrasive tools, in particular to a method for making a brazed single-layer diamond grinding wheel. Background technique [0003] High-temperature brazed single-layer diamond tools have excellent characteristics such as high bonding strength, good for environmental protection, high exposure of abrasives, high effective utilization of abrasives, and long service life, and are widely used. Ni-Cr based solder has the characteristics of high hardness and good wear resistance, and is currently the most widely used solder for brazing diamond tools. However, the brazing temperature is generally around 1050°C, and Ni in the Ni-Cr alloy is an element that promotes diamond graphitization, which has high strength and hardness, so it is easy to cause diamond graphitization, large thermal stress, and eventually Lead to greater thermal damage to the diamond. Contents of the invention [0004] The obj...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/00B24D18/00
Inventor 卢金斌王占勇张旺玺刘磊方占江刘永胜贺亚勋
Owner 禹州市和汇超硬材料有限公司
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