English
A good horse needs to be equipped with a good saddle and use advanced numerical control processing equipment. If the tool used is wrong, it will be useless! The selection of suitable tool materials has a great influence on tool life, processing efficiency, processing quality and processing cost.
Tool materials should have basic properties
The selection of tool material has great influence on tool life, machining efficiency, machining quality and machining cost. The cutting tool must bear the action of high pressure, high temperature, friction, impact and vibration. Therefore, tool materials should have the following basic properties:
(1) Hardness and wear resistance. The hardness of the tool material must be higher than that of the workpiece material, and it is generally required to be above 60HRC. The higher the hardness of tool material, the better the wear resistance.
(2) Strength and toughness. Tool material should have high strength and toughness, so as to bear cutting force, impact and vibration, and prevent brittle fracture and edge collapse.
(3) Heat resistance. The tool material has good heat resistance, can withstand high cutting temperature, 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.
