In metal cutting, the cutting performance of cutting tool directly influences the production efficiency, the machining accuracy of the workpiece, the machining surface quality, the tool consumption and the machining cost.. Correct choice of tool material is garbage meter and the selection of tool is one of the important contents, especially for some difficult to cut materials cutting, the selection of tool materials is particularly important especially for the precision components
Cutting tool material is the material of cutting tools.. Metal cutting, metal cutting tool directly and workpiece and chip contact by great cutting pressure and impact, and by the workpiece and chip of intense friction, resulting in very high cutting temperature. In other words, the cutting tool is part of the work under the conditions of high temperature and high pressure and severe friction. Therefore, cutting tool material should be the following basic properties in metal cutting, the cutting performance of tool materials directly affects the machining accuracy of the workpiece , the production efficiency and the machined surface quality, tool consumption and processing costs. Correct choice of tool material is garbage meter and the selection of tool is one of the important。
High hardness cutting tool material hardness must be higher than the hardness of the workpiece material is, or under high temperature and high pressure, it can not maintain sharp cutter geometry. This is tool material should have the most basic features. At present, the worst performance cutting tool material -- carbon tool steel, the hardness at room temperature also should be to more than 62HRc; hardness of high speed copper 63 ~ 70HRc; the hardness of hard alloy for 89 ~ 93HRA.
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