Diamond grinding tool of ceramic-metallic bond and preparation method of grinding tool

Abstract

The invention discloses a diamond grinding tool of a ceramic-metallic bond and a preparation method of the grinding tool. The preparation method comprises the following steps of: firstly, preparing the ceramic-metallic bond by ball milling the following components in percentage by weight: 40 to 50 percent of silicon dioxide (SiO2), 8 to 15 percent of aluminium oxide (Al2O3), 12 to 20 percent of diboron trioxide (B2O3), 3 to 6 percent of lithium oxide (Li2O), 6 to 12 percent of sodium oxide (Na2O), 3 to 6 percent of potassium oxide (K2O), 2 to 8 percent of zinc oxide (ZnO), 1 to 10 percent of titanium (Ti) and 1 to 5 percent of aluminium (Al); secondly, mixing the ceramic-metallic bond with a diamond abrasive to obtain a mixed material, and then adding 3 to 5 mass percent of wetting agent into the mixed material to obtain a raw material of the grinding tool; and finally, carrying out hot-forming and cooling de-moulding on the raw material of the grinding tool respectively to obtain the diamond grinding tool of the ceramic-metallic bond. The diamond grinding tool of the ceramic-metallic bond provided by the invention has the advantages of the diamond grinding tool of a metallic bond and the grinding tool of a ceramic bond.

Description

technical field

[0001] The invention relates to a ceramic-metal bonded diamond grinding tool and a preparation method thereof. Background technique

[0002] Diamond grinding tools are widely used in the processing of engineering ceramic materials, crystal materials, semiconductor materials, hard alloy materials and composite materials. At present, in the field of high-precision grinding, metal-bonded diamond abrasive tools are mainly used in China. Although this type of abrasive tool has the characteristics of strong bonding force, long grinding life, and good shape retention, it is easy to block due to excessive viscosity. The disadvantages of poor sharpness and difficult trimming often cause workpiece burns and low processing efficiency during processing. Vitrified bonded grinding tools are mainly used abroad. Vitrified bonded diamond grinding tools have great advantages over metal bonded diamond grinding tools in terms of grinding accuracy and grinding efficiency. Due t...

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