Selective case hardening

Selective case hardening involves case hardening only the required portion of a component.

Most components are designed so that they can be case hardened all over. However, some components must be case hardened in certain areas only, the remainder being left soft to permit subsequent processing such as machining or welding. The method used to achieve this is called stopping-off.

Set point

The temperature at which the furnace is intended to be controlled and to which the temperature controller is adjusted.