Cryogenic treatment process for quenching machine tool production

Cryogenic treatment process method for quenching machine tool production. The equipment used is a cryogenic treatment system with a computer continuous monitoring function, which can automatically adjust the amount of liquid nitrogen entering and automatically heat up. The treatment process consists of three precisely compiled programs of cooling, ultra-low temperature insulation and heating. Appropriate and slow cooling, followed by minimal ultra-low temperature insulation and reasonable heating, the entire process is required. Through this reasonable process control and precise monitoring, dimensional changes and “thermal shock” of the workpiece to be processed are prevented.

The cryogenic treatment of the quenching machine tool is different from the general surface treatment. It can improve the properties of the treated material, and the treated tool can still maintain consistent performance after many times of grinding. However, cryogenic treatment cannot replace the heat treatment process, it is an effective supplementary means to improve the mechanical properties of materials after heat treatment. Effect comparison. The service life of cemented carbide tools before and after cryogenic treatment is compared. The cutting test conditions are for cutting gray cast iron; the tool material is cemented carbide; the cutting parameters are the same before and after cryogenic treatment.