To meet the demand of the pressure vessel industry, Baosteel has developed an S11306 ＋ SA516Gr70 roll-bonded clad steel plate. Comprehensive inspections of the composition, microstructure, and properties are performe...To meet the demand of the pressure vessel industry, Baosteel has developed an S11306 ＋ SA516Gr70 roll-bonded clad steel plate. Comprehensive inspections of the composition, microstructure, and properties are performed to systematically evaluate the steel plate in normalized state and normalized ＋ stress relieved state. The results show the cladding interface of the Sl1306 ＋ SA516Gr70 roll-bonded clad steel plate has high shear strength, and the base metal has good mechanical properties. The performance is fully consistent with the technical requirements of the roll-bonded clad steel plate for pressure vessels.展开更多
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-st...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.展开更多
以核电站安全壳用42.5 mm厚SA738Gr.B钢板为试验材料,研究了熔化极气体保护焊焊接过程中的热输入以及焊后热处理对试验钢焊接接头组织和性能的影响。结果表明,随着焊接热输入量的增加,焊接接头的低温冲击功有先增大后减小的趋势;抗拉强...以核电站安全壳用42.5 mm厚SA738Gr.B钢板为试验材料,研究了熔化极气体保护焊焊接过程中的热输入以及焊后热处理对试验钢焊接接头组织和性能的影响。结果表明,随着焊接热输入量的增加,焊接接头的低温冲击功有先增大后减小的趋势;抗拉强度相差不大;而焊后热处理对焊接接头的力学性能影响较小。随着线能量的增大,针状铁素体减小且伴随着一定程度的粗化,粗大的先共析铁素体组织明显增多。焊接热输入量在1.2-2.0 k J/mm范围内焊接时,焊接接头均可获得良好的综合力学性能。焊后消除应力热处理对焊接接头的性能影响不大,当采用较大线能量进行焊接时,建议进行焊后热处理以减小残余拉应力。展开更多
文摘To meet the demand of the pressure vessel industry, Baosteel has developed an S11306 ＋ SA516Gr70 roll-bonded clad steel plate. Comprehensive inspections of the composition, microstructure, and properties are performed to systematically evaluate the steel plate in normalized state and normalized ＋ stress relieved state. The results show the cladding interface of the Sl1306 ＋ SA516Gr70 roll-bonded clad steel plate has high shear strength, and the base metal has good mechanical properties. The performance is fully consistent with the technical requirements of the roll-bonded clad steel plate for pressure vessels.
文摘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.
文摘以核电站安全壳用42.5 mm厚SA738Gr.B钢板为试验材料,研究了熔化极气体保护焊焊接过程中的热输入以及焊后热处理对试验钢焊接接头组织和性能的影响。结果表明,随着焊接热输入量的增加,焊接接头的低温冲击功有先增大后减小的趋势;抗拉强度相差不大;而焊后热处理对焊接接头的力学性能影响较小。随着线能量的增大,针状铁素体减小且伴随着一定程度的粗化,粗大的先共析铁素体组织明显增多。焊接热输入量在1.2-2.0 k J/mm范围内焊接时,焊接接头均可获得良好的综合力学性能。焊后消除应力热处理对焊接接头的性能影响不大,当采用较大线能量进行焊接时,建议进行焊后热处理以减小残余拉应力。
