1, tool material

Tool material is the fundamental factor determining the cutting performance of the tool, and has a great influence on machining efficiency, machining quality, machining cost and tool durability. The harder the tool material is, the better its wear resistance is. The higher the hardness, the lower the impact toughness and the brittle material. Hardness and toughness are a pair of contradictions and a key to the tool material. For graphite tools, ordinary TiAlN coatings can be selected with a relatively good toughness in the selection of materials, that is, the cobalt content is slightly higher; for diamond-coated graphite tools, the hardness can be appropriately selected on the material selection. , that is, the cobalt content is slightly lower;

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