摘要
针对A709 Gr345W耐候桥梁钢,通过拉伸、冲击、弯曲等试验方法对其焊接接头的力学性能进行了研究。结果表明:采用JW-55W焊丝对A709 Gr345W耐候桥梁钢进行焊接时,接头具有良好的抗拉强度、弯曲性能和优异的低温冲击韧性;所选焊接工艺适用于板厚19~33 mm的A709 Gr345W钢板对接焊缝的平位焊接。
The mechanical properties of welding joints were investigated in A709 Gr345W weather- resistant bridge steels by means of tensile, impact, bending and hardness tests. The results indicated that the welding joints had excellent combination of tensile strength, bending property and low temperature toughness when JW -55W welding wire was applied for welding. Besides, the optimized welding technology was appropriate for the mean position butt welding of A709 Gr345W steel plates with thickness in the range of 19 to 33 mm.
出处
《湖北理工学院学报》
2017年第1期4-6,共3页
Journal of Hubei Polytechnic University
基金
湖北省教育厅青年基金项目(项目编号:20123001)
湖北理工学院校级博士科研启动基金项目(项目编号:11yjz01R)
湖北理工学院校级教研项目(项目编号:2015A05)
关键词
耐候钢
桥梁钢
焊接工艺
weather - resistance steel
bridge steel
welding technology
