Mainly used for large workpieces, high chromium, high manganese steel castings annealing, tempering, heat treatment, such as aging, as well as gray iron, ductile iron, Roller, Ball, Crusher hammerhead, wear-resistant liner hardening, normalizing, tempering, annealing, aging machinery and spare parts as well as heat treatment purposes. Using multiple procedures microcomputer automatic temperature control cabinet, divided into multi-zone heat treatment process of independent high-precision automatic temperature control. As warming slope can be set arbitrarily, particularly applicable to high manganese steel castings ultra-low rate of warming of the special requirements of heat treatment process to achieve the best results.