Tool materials should have basic properties

The selection of tool materials has a great impact on tool life, processing efficiency, processing quality and processing cost. Tools must withstand high pressure, high temperature, friction, impact and vibration when cutting. Therefore, tool materials should have the following basic properties:

(1) Hardness and wear resistance. The hardness of the tool material must be higher than the hardness of the workpiece material, which is generally required to be above 60HRC. The higher the hardness of the tool material, the better the wear resistance.

(2) Strength and toughness. Tool materials should have high strength and toughness to withstand cutting forces, impact and vibration, and prevent brittle fracture and chipping of the tool.

(3) Heat resistance. The tool material has good heat resistance, can withstand high cutting temperatures, and has good oxidation resistance.

(4) Process performance and economy. Tool materials should have good forging performance, heat treatment performance, welding performance; grinding performance, etc., and should pursue high performance-price ratio.