As we all know, cryogenic treatment is very important. Many customers will ask questions about DC53 cryogenic treatment process and DC53 cryogenic treatment temperature. Die steel manufacturers will answer questions related to the extension of DC53 cryogenic treatment temperature.

，我们了解了本文的核心问题:DC53深冷处理工艺、DC53深冷处理温度。

Firstly, we understand the core problems of this paper: DC53 cryogenic treatment process and DC53 cryogenic treatment temperature.

根据多年的研究经验，DC53深冷处理一般在-196℃进行。DC53板材的正常深冷处理工艺如下:一般在调质之间进行，也可以在调质后进行。但是需要注意的是，如果淬火回火后钢中残留奥氏体，需要在深冷处理后再次回火。深冷处理可以提高钢的耐磨性和回火稳定性。深冷处理不仅可用于冷加工模具，也可用于热加工模具和硬质合金。

According to many years of research experience, DC53 cryogenic treatment is generally carried out at - 196 ℃. The normal cryogenic treatment process of DC53 plate is as follows: generally, it can be carried out between quenching and tempering or after quenching and tempering. However, it should be noted that if austenite remains in the steel after quenching and tempering, it needs to be tempered again after cryogenic treatment. Cryogenic treatment can improve the wear resistance and tempering stability of steel. Cryogenic treatment can be used not only for cold working molds, but also for hot working molds and cemented carbide.

说到这里，让我们来了解一下深冷处理对钢的影响:

Here, let's understand the influence of cryogenic treatment on steel:

1)超深冷却可以提高DC53模具钢和DY-SKH51高速钢的硬度，更充分地保证韧性(超深冷却时残余碳化物转变为马氏体)。

1) Ultra deep cooling can improve the hardness of DC53 die steel and dy-skh51 high speed steel and fully ensure the toughness (residual carbide changes to martensite during ultra deep cooling).

2)超深冷却还能保持DC53模具工件的精度(尺寸稳定性)，防止室温下由于残余奥氏体转变而引起的尺寸变化。

2) Ultra deep cooling can also maintain the accuracy (dimensional stability) of DC53 die workpiece and prevent dimensional changes caused by residual austenite transformation at room temperature.

3)深冷处理还能促进未转变奥氏体向马氏体转变，进一步提高硬度，从而提高零件的耐磨性和使用寿命；促进细小碳化物的分散和析出，可以提高DC53圆钢的韧性。

3) Cryogenic treatment can also promote the transformation from untransformed austenite to martensite and further improve the hardness, so as to improve the wear resistance and service life of parts; Promoting the dispersion and precipitation of fine carbides can improve the toughness of DC53 round steel.

DC53模具钢的深冷处理工艺

Cryogenic treatment process of DC53 die steel

对于马氏体相变温度较低、残余奥氏体较多的模具钢，以及量具、刀具、冷作模具的精密零件，效果显著。同样，为了减少变形和防止开裂，需要淬透性的工件应选用淬透性好的钢。为了在淬火和冷却过程中使用较慢的点火介质进行冷却，从而减少变形和开裂。如果在重负荷下工作，使用淬透性好的钢；当要求表面坚硬耐磨时。淬火回火后可采用表面淬火回火，表面淬火回火后的变形开裂倾向小于全淬透性。

The effect is remarkable for die steel with low martensitic transformation temperature and more retained austenite, as well as precision parts of measuring tools, cutting tools and cold working dies. Similarly, in order to reduce deformation and prevent cracking, workpieces requiring hardenability shall be made of steel with good hardenability. In order to use slower ignition medium for cooling during quenching and cooling, so as to reduce deformation and cracking. If working under heavy load, use steel with good hardenability; When the surface is required to be hard and wear-resistant. Surface quenching and tempering can be adopted after quenching and tempering, and the deformation and cracking tendency after surface quenching and tempering is less than that of full hardenability.