Process: The mold is cooled to -120°C to -190°C, held at this temperature according to the process specifications, then slowly brought back to room temperature. This is a post-heat treatment process.

Key Benefits:

1. Enhanced Hardness and Wear Resistance

By transforming residual austenite within the mold into martensite, surface hardness increases and wear resistance improves. Stamping and injection molds become less prone to scratching or material chipping.

2. Dimensional Stability and Reduced Deformation

Internal residual stresses are relieved, minimizing expansion or contraction during mass production. This ensures consistent dimensional accuracy and reduces scrap rates.

3. Extended Mold Service Life

Fatigue resistance is improved, reducing risks of chipping, cracking, or spalling. Overall mold life can be extended by 20% to 60%, significantly lowering costs associated with frequent mold replacement.

4. Improved Residual Stress Management and Lower Crack Risk

After quenching, internal stresses remain in the mold. Cryogenic treatment helps release some of these stresses, making the mold less likely to suddenly crack during operation.

Suitable Molds:

Stamping molds, die-casting molds, injection molds, hot-work molds, and cold-work molds