Welding Procedure Qualification of 12Cr1MoV Pearlite Heat-proof Steel
12Cr1MoV steel is mainly used in super heater and reheater of power station boiler,the welding procedure qualification should be carried out to promise safety.Based on the welding of 12Cr1MoV steel craft project,the welding process scheme was set up,the mechanical properties of the welded joint were tested.The results show that the weld craft project can meet DL/T868-2004 standard request of thermal power plant welds technique regulations.