Preparation method of diamond grinding wheel with orderly-arranged crystal orientation abrasives

Abstract

The invention discloses a preparation method of a diamond grinding wheel with orderly-arranged crystal orientation abrasives. The preparation method comprises the following steps that a shape controlfilm is prepared by adopting a photoetching technology and adhered to the outer circumferential surface of a substrate, and diamond micro-powder is uniformly sprayed as diamond seeds for subsequent deposition; a layer of amorphous carbon is deposited on the diamond seeds by adopting an EACVD technology, and crystal orientation is performed on subsequently synthesized diamond abrasive particles; deposition parameters are adjusted, nucleation growth is performed on the abrasive particles to form diamond abrasive particles with {100} crystal surfaces as the top surfaces, {111} crystal surfaces asthe side surfaces and larger exposure heights, a micro grinding unit is formed by the diamond abrasive particles, the amorphous carbon and a diamond bonding layer, and a plurality of micro grinding units are orderly arranged according to a photoetching pattern of the shape control film; and the shape control film is removed through ultrasonic cleaning, gaps between a large number of micro grinding units are micro flow channels, and a grinding wheel finished product is obtained through drying. According to the preparation method, crystal orientation can be performed on the diamond abrasive particles, the abrasives can be arranged orderly, and the grinding performance of the grinding wheel is remarkably improved.

Description

technical field [0001] The invention relates to a method for preparing a diamond grinding wheel, in particular to a method for preparing a diamond grinding wheel in which crystalline directional abrasives are arranged in an orderly manner. [0002] technical background [0003] As a bonded abrasive tool with diamond as abrasive, diamond grinding wheel is widely used in grinding processing, and the manufacturing technology of diamond grinding wheel directly determines the characteristics and structure of the grinding wheel. The quality of performance has a major impact. The traditional diamond grinding wheel uses a bond to fix the abrasive on the working surface of the grinding wheel. This process is random, resulting in irregular and uneven distribution of diamond abrasive grains. The geometric size of each diamond abrasive grain and the blade height And the orientation is inconsistent, thereby reducing the grinding efficiency and grinding quality of the grinding wheel, maki...

AI Technical Summary

Problems solved by technology

This method can effectively improve the grinding performance and service life of the diamond grinding wheel, but the patent can only use submillimeter-level coarse-grained diamond abrasive grains, making it difficult for the diamond grinding wheel to meet the processing requirements of precision grinding; and the physical and chemical analyzer is used in the preparation process The method of placing diamond abrasive grains in the groove one by one makes the preparation efficiency of the grinding wheel extremely low. At the same time, it is difficult to maintain the same geometric size and edge height of the diamond abrasive grains. The traditional brazing method results in a small edge height of the abrasive grains. The efficiency is low, which shows that there are still obvious technical bottlenecks in this method

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