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Grinding wheel for hard material processing and preparation method thereof

A hard material and grinding wheel technology, applied in the field of grinding wheel manufacturing, can solve the problems of insufficient sharpness, high brittleness of binder, short life and other problems, and achieve the effect of improving efficiency and stability, improving sharpness and improving uniformity

Pending Publication Date: 2021-07-13
珠海市世创金刚石工具制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The holding force of the bond in the superhard grinding wheel is the key to the performance of the superhard grinding wheel. The following four kinds of bonds can be used in superhard grinding wheels, namely: electroplating bond, resin bond, vitrified bond, and metal bond. Among them, the electroplating bond has only a thin layer of abrasive covering the surface of the substrate, and has the shortest life; the resin bond has a relatively short life because the heat resistance of the resin itself is not high enough; the life of the ceramic bond is longer than that of both electroplating and resin. It needs to be longer, but the bond itself is brittle, and it is prone to chipping during the grinding process, resulting in a decrease in the finish of the grinding object; the metal bond has high bonding strength and good holding force, but in some cases, it will cause insufficient sharpness and cannot be improved. Processing efficiency

Method used

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  • Grinding wheel for hard material processing and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment provides a grinding wheel for grinding cemented carbide gap grinding, which includes a grinding wheel substrate, a transition layer and an abrasive layer from the inside to the outside; wherein the raw materials used in the abrasive layer include abrasives and metal bonds; the abrasives are polycrystalline Nickel-plated diamond has a coating weight gain of 30% and a particle size of D126; the metal bond includes the following components by weight: 70 parts of copper powder, 25 parts of tin powder, and 5 parts of silver powder; the raw material used for the transition layer is copper powder.

[0028] The preparation method of the above-mentioned emery wheel for grinding cemented carbide gap grinding, comprises the following steps:

[0029] (1) Mix the abrasive material and the metal bond at a volume ratio of 30:70, place the mixture in a three-dimensional mixer for 2 hours, and then take it out to pass through a 200-mesh sieve; pass the copper powder used ...

Embodiment 2

[0034] This embodiment provides a grinding wheel for grinding high-speed steel with a gap, which includes a grinding wheel matrix, a transition layer, and an abrasive layer from the inside to the outside; wherein the raw materials used in the abrasive layer include abrasives and metal bonds; the abrasives are cubic nitrided Boron (CBN), not coated, particle size is B126; the metal bonding agent includes the following components by weight: 70 parts of copper powder, 25 parts of tin powder, and 5 parts of silver powder; the raw material used for the transition layer is copper powder.

[0035] The preparation method of the above-mentioned emery wheel for grinding high-speed steel gap grinding comprises the following steps:

[0036] (1) Mix the abrasive material and the metal bond at a volume ratio of 35:65, put them in a three-dimensional mixer for 2 hours and then take them out to pass through a 200-mesh sieve; pass the copper powder used in the transition layer through a 300-mes...

Embodiment 3

[0043] This embodiment provides a grinding wheel for grinding cermets with a gap, which includes a grinding wheel base, a transition layer, and an abrasive layer from the inside to the outside; wherein the raw materials used in the abrasive layer include abrasives and metal bonds; the abrasive is a single crystal Diamond, not nickel-plated, particle size is D126; the metal bond includes the following components by weight: 70 parts of copper powder, 20 parts of tin powder, 5 parts of silver powder, 3 parts of cobalt powder, and 2 parts of nickel powder; the raw materials used for the transition layer are copper powder.

[0044] The preparation method of the above-mentioned grinding wheel for grinding cermet gap grinding comprises the following steps:

[0045] (1) Mix the abrasive material and the metal bond at a volume ratio of 35:65, put them in a three-dimensional mixer for 2 hours and then take them out to pass through a 200-mesh sieve; pass the copper powder used in the tra...

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Abstract

The invention belongs to the technical field of grinding wheel manufacturing, and discloses a grinding wheel for hard material processing and a preparation method of the grinding wheel. The grinding wheel for hard material processing comprises a grinding wheel base body, a transition layer and a grinding material layer from inside to outside; raw materials used by the grinding material layer comprise a grinding material and a metal bonding agent; the metal bonding agent comprises the following components in parts by weight: 56-85 parts of copper powder, 10-40 parts of tin powder, 1-16 parts of silver powder, 0-5 parts of cobalt powder and 0-5 parts of nickel powder; raw materials used by the transition layer comprise at least one of copper powder, tin powder, silver powder, cobalt powder and nickel powder. The grinding wheel has the advantages of being high in sharpness, long in service life and good in processing efficiency, and can be applied to processing of hard materials such as metal ceramic, high-speed steel and hard alloy.

Description

technical field [0001] The invention belongs to the technical field of grinding wheel manufacturing, and in particular relates to a grinding wheel used for processing hard materials and a preparation method thereof. Background technique [0002] Nowadays, with the continuous development of technology and the continuous emergence of new materials, more and more hard materials that are difficult to process, such as pure ceramics, cermets, etc., cannot be processed by the original grinding wheel. The demand for effective processing can easily cause excessive consumption of the grinding wheel and insufficient service life. How to ensure the life and precision of the grinding wheel and improve the processing efficiency of the product without reducing the sharpness of the grinding wheel is an urgent problem to be solved and overcome in this field [0003] Super hard grinding wheels are considered to be the first choice to solve this problem because of their high service life. Su...

Claims

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Application Information

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IPC IPC(8): B24D3/10B24D18/00
CPCB24D3/10B24D18/0009B24D18/0072
Inventor 刘帅毛昌利
Owner 珠海市世创金刚石工具制造有限公司
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