2311 MOULD STEEL
|
STRESS
RELIEVING |
||
| Heat to 650°C / 750°C. Hold for 2-4 hours and furnace cool. |
|
HARDENING |
||
| Before heat
treatment, sufficient machining should be carried out to remove surface decarburisation. Preheat thoroughly to 650°C / 700°C, and then raise more rapidly to 830°C / 850°C in a controlled atmosphere furnace or preferably, a neutral salt bath. Quench in oil. |