There are two heat treatment options for Cr12MoV steel. One is the primary hardening method, which uses a lower quenching temperature + low temperature tempering; the other is the secondary hardening method, which uses a higher quenching temperature. With multiple high temperature tempering. The process of plan one is preheated at 500-600, preheated at 820-860, and finally heated to 980-1040. The oil-cooled HRC is at 60-65; the process of plan two is preheated at 500-600, preheated at 820-860, and finally heated to 1060-1100. Oil cooling is combined with multiple temperings, and the quenching hardness is low. The hardness will increase with each tempering. The hardness can be adjusted between 60-65 through the tempering temperature and number of times. It is worth noting that the heating speed should not exceed 100°C/h, otherwise it will crack directly during the heating process. You need to explain specifically what material it is, or how much Cr, V, and carbon are. Only in this way can the craftsmanship be produced accurately.