Vacuum Heat Treatment
Vacuum heat treating consists of thermally treating metals in heated enclosures that are evacuated to partial pressures compatible with the specific metals and processes. Vacuum is a substitute for the more commonly used protective gas atmospheres during part or all of the heat treatment cycles. Components commonly heat treated in vacuum furnaces are moulds and dies.
Advantages
- Surface integrity - prevents surface reactions such as oxidation or decarburisation on work pieces
- Surface cleanliness - produces a bright finish after hardening process
- Removes surface contaminants such as oxide films and residual traces of lubricants resulting from fabrication operations.
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