Six advantages of vacuum heat treatment quenching

Its advantages lie in:
1. No oxidation, no decarbonization and rust removal, eliminating the surface grinding process, thus saving steel and raw material consumption, saving processing time.
2. degassing. Gases dissolved in metals at atmospheric pressure diffuse from the inside of the metal to the surface and overflow at negative pressure. This phenomenon is called degassing. Vacuum quenching heating has degassing characteristics, so that the surface purity of the material is improved, thereby improving the fatigue and plasticity of the mold. Toughness and corrosion resistance.
3., it is beneficial to remove residual oil and improve product quality.
4. the treated parts have no hydrogen embrittlement risk to prevent surface embrittlement of titanium and insoluble metals.
5. heat treatment has little distortion. Because the vacuum heating is slow, the temperature difference between inside and outside the workpiece is small; vacuum heating is generally preheated 1-2 times, the workpiece section temperature difference is small, thermal stress is also small, so it will not cause greater deformation due to external forces. In general, vacuum quenching quenched 10%~50% in salt bath quenching.
6. Vacuum quenching process is stable, repeatable, safe operation, high degree of automation, clean working environment, pollution-free, pollution-free.
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HEAT TREATMENT CRYOGENIC PROCESS