DC53 cryogenic treatment process
As we all know, the role of cryogenic treatment is very large, many customers will ask questions about DC53 cryogenic treatment process, DC53 cryogenic treatment temperature and so on, Longtop metal customer service here for you by DC53 cryogenic treatment process, DC53 cryogenic treatment temperature extended to related issues.
First of all, let's understand the core issues of this article: DC53 cryogenic treatment process, DC53 cryogenic treatment temperature.
According to years of research experience, it can be known that DC53 cryogenic treatment is generally carried out at minus 196 ° C. The normal treatment process of DC53 plate cryogenic is as follows: it is generally carried out between the quenching and tempering processes, and can also be cryogenic treatment after quenching and tempering. However, there is a case to be noted that if there is still residual austenite in the steel after quenching and tempering, it is still necessary to tempering again after cryogenic treatment. Cryogenic treatment can improve the wear resistance and tempering stability of steel. Cryogenic treatment is not only used for cold working molds, but also for hot working molds and cemented carbide. Longtuo Metal now has special cryogenic equipment.
Having said so much, let's understand the effect of cryogenic treatment on steel:
1) Ultra-cryogenics can improve the hardness of DC53 die steel and DY-SKH51 high-speed steel, and the toughness is more fully guaranteed (in the ultra-cryogenics process, residual carbide is transformed into martensite).
2) Ultra-cryogenic cooling can also make the DC53 die workpiece have accuracy retention (dimensional stability) to prevent dimensional changes due to residual austenite transformation at room temperature.
3) Cryogenic treatment can also promote the unconverted austenite to be more transformed into martensite, further improving the hardness, thereby improving the wear resistance and service life of parts; Promoting the dispersion of fine carbides can improve the toughness of DC53 round steel.
Longtuo Metal is also attached here to explain that the effect is remarkable for die steels with low martensitic transition temperature and more residual austenite, as well as precision parts of measuring tools, cutting tools and cold War molds. Similarly, in order to reduce deformation and prevent cracking, steel with good hardenability should be selected for the workpiece requiring quenching. In order to use a slower fire accelerating medium to cool during quenching cooling, thereby reducing deformation and cracking. If working under heavy load, use steel with good hardenability; When the surface is hard and wear-resistant. Surface quenching and tempering after tempering can be used, and the deformation and cracking tendency after surface quenching and tempering is smaller than the full hardenability.
