Development of SA-533 Type B CL.1 + SA-240 Type 304L roll-bonded clad steel plate for safety injection tank of CAP1400 nuclear power plant

摘要

Aiming to meet the demand of the country' s nuclear demonstration project on the CAP1400 nuclear power plant,Baosteel uses the roll-bonding technology and develops the SA-533 Type B CL.1 + SA-240 Type 304L high-strength and high-toughness clad steel plate with a shear strength of over 310 MPa for the nuclear power plant' s safety injection tank.The properties of the quenched and tempered and the simulated post-weld heat treatment states are systematically studied herein through a comprehensive inspection and evaluation of the composition,microstructure,and properties of the clad steel plate.The results show that the bonding interface has high shear strength and that the base metal has high strength and good toughness at low temperatures.Hence,the performance fully meets the technical requirements of the CAP1400 nuclear power plant' s safety injection tank in the country' s nuclear demonstration project.The roll-bonded clad steel plate can be used to manufacture the safety injection tank of the CAP1400 nuclear power plant.