What is Through Hardening?
This process consists of heating the parts to a temperature above the transformation range and rapid cooling to room temperature, usually using an oil quench. This may be performed in air or in a controlled atmosphere to protect the part's surface. Parts are then reheated to a lower temperature to temper to the desired final hardness range.
- Improves strength and hardness
- Controllable specific mechanical properties
- Same hardness throughout part
- Increases lifespan of part
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