High-performance metallic bond, grinding wheel comprising high-performance metallic bond and preparation method of grinding wheel

Abstract

The invention belongs to the technical field of grinding materials and grinding tools, and particularly relates to a high-performance metallic bond, a grinding wheel comprising the metallic bond and a preparation method of the grinding wheel. The metallic bond is prepared from the materials in parts by weight: 30-70 parts of copper-tin alloy powder, 5-15 parts of nickel powder, 1-10 parts of silver powder, 5-15 parts of iron powder and 1-5 parts of aluminum oxide powder. The metallic bond further comprises 1-10 wt% of silicon dioxide powder and 10-25 wt% of cobalt powder. The preparation method of the grinding wheel containing the high-performance metallic bond includes the steps that the metallic bond and diamond are mixed for 12-24 h through a high-speed mixing machine; and the mixture of the metal powder and diamond abrasive particles are sintered under the conditions that the temperature is 500-1500 DEG C and the pressure is 1-20 T by using a mold, and demolding is conducted to obtain the grinding wheel containing the high-performance metallic bond. The metallic bond is good in holding performance, the service life of the grinding wheel is long, the bond is good in sharpness, good in heat conductivity and good in heat resistance, and the grinding wheel is uniform in hardness and stable in quality by adopting a heating and pressurizing method.

Description

technical field [0001] The invention belongs to the technical field of abrasive abrasives, and in particular relates to a high-performance metal bond, a grinding wheel containing the same and a preparation method of the grinding wheel. Background technique [0002] Due to its high hardness and strong cutting force, diamond grinding wheels are widely used in the processing of cemented carbide, ceramics, glass and other materials. Due to its good retention, the metal bond has a wider application range, especially the sharp-edged diamond grinding wheel, which is used for slotting applications such as saw blades and hard alloys. Due to the high requirements for sharp corner retention, metal bonds are often used The bond can improve its retention of sharp corners, but the use of metal bonds will lead to a decrease in the thermal conductivity of the diamond grinding wheel, and if the grinding temperature rises too fast, the holding force of the metal bond to the diamond will decre...

AI Technical Summary

Problems solved by technology

Due to its good retention, the metal bond has a wider application range, especially the sharp-edged diamond grinding wheel, which is used for slotting applications such as saw blades and hard alloys. Due to the high requirements for sharp corner retention, metal bonds are often used The bond can improve its retention of sharp corners, but the use of metal bonds will lead to a decrease in the thermal conductivity of the diamond grinding wheel, and if the grinding temperature rises too fast, the holding force of the metal bond to the diamond will decrease, making the diamond abrasive grains It is easy to fall off; at the same time, the use of metal bonding agent will cause the self-sharpening of the grinding wheel to decrease, so now there is a need for a diamond grinding wheel that can improve the sharpness of the sharp corner without reducing the self-sharpening of the grinding wheel, and has a good thermally conductive metal bond

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