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Method for making induction brazing monolayer diamond grinding wheel

A single-layer diamond, induction brazing technology, used in metal processing equipment, manufacturing tools, grinding/polishing equipment, etc., can solve the problems of high melting point, poor self-sharpening, unfavorable abrasive grain exposure, etc.

Active Publication Date: 2018-12-11
泰兴市中博钻石科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The brazing material has a high melting point, and Ni is an element that promotes diamond graphitization, and has high strength and hardness. Therefore, the high temperature in the brazing process is easy to cause diamond graphitization, and the residual stress of diamond after welding is relatively large, which eventually leads to Larger thermal damage to diamond
In addition, when such tools are cutting and grinding hard and brittle materials such as granite, stone, and ceramics, the Ni-Cr-based solder wears slowly, which is not conducive to the exposure of abrasive particles, making the tools prone to passivation, that is, poor self-sharpening, Affect work efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Select 45 steel as the base of the grinding wheel, and use the method of mechanical processing to manufacture the base of the grinding wheel with a diameter of 150mm, and remove oil and rust.

[0016] (2) Brazing material production: The brazing material is composed of Cu, Mn, Ni, Cr, and C powders with a purity of 99.9%~100% mixed in the following weight ratio: 30% Mn; 10% Ni; 4% Cr; 0.8% C, the rest is Cu. The above mixed powder is melted and sprayed to make pre-alloyed powder.

[0017] (3) Preparation of solder slurry: mix the solder and pressure-sensitive adhesive at a weight ratio of 1: 2.1 to form a solder slurry;

[0018] (4) Coating: Use a brush to evenly coat and fix the solder slurry on the surface of the grinding wheel steel substrate. The thickness of the solder slurry is 100% of the average particle size of the abrasive, and the particle size of the diamond abrasive is 320-420 microns;

[0019] (5) Make tool forming blanks in the order of diamond grin...

Embodiment 2

[0023] (1) Q235 steel is selected as the grinding wheel base body, and the grinding wheel base body with a diameter of 100 mm is produced by mechanical processing to remove oil and rust.

[0024] (2) Brazing material production: The brazing material is composed of Cu, Mn, Ni, Cr, and C powders with a purity of 99.9%~100% mixed in the following weight ratio: 32% Mn; 8% Ni; 3% Cr; 1% C, the rest is Cu. The above mixed powder is melted and sprayed to make pre-alloyed powder.

[0025] (3) Preparation of solder slurry: mix the solder and pressure-sensitive adhesive at a weight ratio of 1:1.3 to form a solder slurry;

[0026] (4) Coating: Use a brush to evenly coat and fix the solder slurry on the surface of the grinding wheel steel substrate. The thickness of the solder slurry is 125% of the average particle size of the abrasive, and the particle size of the diamond abrasive is 150-240 microns;

[0027] (5) Make tool forming blanks in the order of diamond grinding wheel metal sub...

Embodiment 3

[0031] (1) 62Mn steel is selected as the grinding wheel base body, and the grinding wheel base body with a diameter of 80mm is made by mechanical processing to remove oil and rust.

[0032] (2) Brazing material production: The brazing material is composed of Cu, Mn, Ni, Cr, and C powders with a purity of 99.9%~100% mixed in the following weight ratio: 29% Mn; 10% Ni; 3.5% Cr; 0.7% C, the rest is Cu. The above mixed powder is melted and sprayed to make pre-alloyed powder.

[0033] (3) Preparation of solder slurry: mix the solder and pressure-sensitive adhesive at a weight ratio of 1:1.3 to form a solder slurry;

[0034] (4) Coating: Use a brush to evenly coat and fix the solder slurry on the surface of the grinding wheel steel substrate. The thickness of the solder slurry is 95% of the average particle size of the abrasive, and the particle size of the diamond abrasive is 210-320 microns;

[0035] (5) Make tool forming blanks in the order of diamond grinding wheel metal subst...

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Abstract

The invention provides a method for making an induction brazing monolayer diamond grinding wheel. The method includes the following steps that carbon steel or spring steel and the like is selected asa grinding wheel matrix material, a grinding wheel matrix is made, after melting, Cu powder, Mn powder, Ni powder, Cr powder and C powder are sprayed to prepare pre-alloyed powder, namely brazing filler metal, after alloying, the brazing filler metal is uniform i component, then powdered brazing filler metal and grinding materials are prepared, the brazing filler metal is heated through inductionbrazing, and then the induction brazing monolayer diamond grinding wheel can be made. After welding, a thin layer of carbide can be formed on the surfaces of diamond abrasive particles, and chemical metallurgical bonding between diamond and a steel matrix is achieved. The method is used for making the grinding wheel, and the method has the advantages that the thermal damage of the diamond abrasiveparticles is small and the brazing effect is good.

Description

technical field [0001] The invention belongs to the field of diamond tool manufacture, in particular to the manufacturing technology of brazing single-layer diamond tools. Background technique [0002] At present, diamond tools are mostly used in the processing of hard and brittle materials. Among them, brazed single-layer diamond tools have excellent characteristics such as high bonding strength, high abrasive exposure, environmental protection, high abrasive effective utilization rate, and long service life. They have a wide range of applications. . In addition, the abrasive grains on the surface of the brazed tool are easier to achieve orderly arrangement, which greatly improves the efficiency of the tool. Therefore, brazed diamond tools are considered to be the best alternatives to plated tools. [0003] Brazing mostly uses Ni and Cu-based alloyed solder containing active elements (such as Cr, Ti, V, W), among which Ni-Cr-B-Si based solder has the characteristics of hi...

Claims

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Application Information

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IPC IPC(8): B24D18/00
CPCB24D18/0072B24D18/009
Inventor 卢金斌冯杰殷振张旺玺王志新马明星曹自洋齐芳娟
Owner 泰兴市中博钻石科技股份有限公司
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