About us

Mold Heat Treatment Technology: How Professional Processing Improves Mold Steel Toughness and Stabil

OkMold Views：117 Release time：2026-07-02
Heat treatment is the core hidden process that determines the comprehensive performance of molds and precision mold components. Many low-precision, short-life mold failures are not caused by defective cutting or grinding, but by unqualified heat treatment in precision mold parts machining. Improper quenching, tempering and vacuum treatment lead to unstable mold steel hardness, internal stress residue and easy deformation, which greatly reduce mold service life and production stability.
We integrate professional vacuum heat treatment technology into the whole process of precision mold parts machining. According to different mold steel materials and production working conditions, we formulate targeted heat treatment schemes to eliminate internal stress, balance hardness and toughness of precision mold parts, and fundamentally improve mold stability and wear resistance.

Problems Caused by Unprofessional Heat Treatment

Ordinary simplified heat treatment processes often cause many quality defects of precision mold components. Insufficient tempering leads to residual internal stress, and mold parts are prone to deformation and cracking after long-term high-pressure molding. Excessive hardness caused by improper quenching makes mold steel brittle and easy to collapse edges and corners, while insufficient hardness results in rapid wear of key mold positions.
In addition, unstandardized heat treatment will cause uneven material texture of precision mold parts machining finished products, leading to inconsistent local precision of molds, gradual dimensional deviation in mass production, and continuous emergence of defective products, seriously affecting production yield.

Our Precision Heat Treatment & Machining Integration Process

We adopt high-precision vacuum heat treatment equipment for all high-end precision mold parts machining projects, avoiding oxidation and decarbonization of mold steel surface. For H13, SKD61, S136 and other common mold steels, we match exclusive quenching temperature and tempering times to ensure uniform material hardness and stable internal structure.
After heat treatment, we conduct stress relief treatment again to eliminate processing internal stress generated in cutting and milling processes, preventing later deformation of precision mold components. We strictly detect the hardness of each batch of parts to ensure that the hardness error is controlled within ±1HRC, meeting high-standard mold production requirements.

Long-Term Performance Advantages of Heat-Treated Mold Parts

Mold parts processed by professional heat treatment and precision mold parts machining have balanced hardness and toughness, strong deformation resistance and wear resistance. They can withstand long-term high-cycle, high-temperature and high-pressure molding production, effectively delaying precision attenuation, reducing mold failure rate and maintenance frequency, and greatly extending the overall service life of the mold.
Cooperate with us to obtain heat-treatment optimized precision mold processing solutions and create high-stability and long-life molds for mass production.


Recommended reading