Liquid nitrogen machine cryogenic treatment process

In short, through cryogenic treatment of liquid nitrogen machine , the wear resistance (hardness), toughness (hardness and toughness of ordinary heat treatment are inverse indicators), dimensional stability of precision molds, and prevention of workpiece defect failure can be improved.

Liquid nitrogen machine cryogenic treatment process:

Generally speaking, low temperature treatment at 0°C to -100°C is called cryogenic treatment, and -150°C to -196°C is called ultra-cryogenic heat treatment.

There are two kinds, one is direct cryogenic treatment after quenching, and the other is cryogenic treatment after tempering. These two treatment processes can reduce the content of Paralympic and the performance of the workpiece after treatment is different, and the appropriate process should be selected according to the purpose of use. In addition, the factors affecting the quality of the cryogenic treatment of the workpiece also include, the length of the cryogenic holding time, the cooling rate, the number of cryogenic cooling, etc. These factors will have an impact on the performance of the workpiece after cryogenic cooling. To repeat, if interested readers can contact the relevant personnel of Hitachi Metal Heat Treatment Department.

Combined with the cryogenic treatment of liquid nitrogen machine , the metal develops a heat treatment process to prevent the size change of the precision mold, which can prevent the size change of the precision mold when it is used for a long time.