Along with the progress of science and technology and the development of modern industry, hard brittle materials (such as laser and infrared optical crystal, ceramics, quartz glass, silicon crystal and stone, etc.) are widely used.. Due to the hard and brittle materials with high hardness, high brittleness, the physical and mechanical properties especially toughness and strength and metal materials are very different compared to, so these materials is difficult to not even by processing method of ordinary processing. Diamond is the highest known material in nature, and its excellent properties make it a bright future in the field of hard brittle materials.. At present, the use of diamond tools for cutting and grinding of hard brittle materials is still an effective method, such as diamond cutting tools, diamond grinding wheel grinding ceramics, etc..
The diamond tools of hard brittle materials mainly include diamond cutting tools and diamond grinding wheel. Although the application range and machining features of various tools are different, the wear mechanism is roughly the same.. Because of the wear of diamond tool on the workpiece in the machining quality and the machining process, tool wear performance is an important index to reflect the tool properties and process parameters are reasonable, so the reasonable selection of mechanism research to guide the diamond tool rational manufacturing and process parameters of the diamond tool wear has important significance. For a long time, many domestic and foreign scholars have studied the wear mechanism of the diamond tools, and have achieved encouraging results..
Study on the wear mechanism of 2 diamond tools
When the hard brittle materials are hard and brittle materials processed by diamond tools, the tool will inevitably wear out because of the severe friction and high temperature, and wear is a very complicated process..
(1) three stages of wear
The wear of the diamond tools consists of three stages: the initial rapid wear stage (also known as the transition stage), the wear rate is about the constant wear stage and the subsequent accelerated wear stage. The accelerated wear stage showed that the tool could not continue to work and need to be re - dressing..
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