Hardening
Preheat: Heat to 1550-1600�F (845-870�C) Equalize.
Austenitize: 1900-2000�F (1035-1095�C), hold time at temperature
15-30 minutes.
My question is once you have preheated to 1550-1600 and soaked to equalize do you let it cool to 0 or immediately bring your temp up to 1900-2000?