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sui dao jue jin ji zhong 40crnimoa yu q345c yi zhong gang de han jie gong yi
Author(s): 
Pages: 45-47
Year: Issue:  8
Journal: Welding Technology

Keyword:  异种钢焊接40CrNiMo A与Q345C隧道掘进机焊接性焊接工艺金相组织力学性能;
Abstract: 针对隧道掘进机主梁支撑推进系统中材质为40Cr Ni Mo A的撑靴体球头和材质为Q345C撑靴体底板的异种钢材焊接工艺特点和实际生产的需求,分析了这2种材料的焊接性;通过选择合适的焊接材料、焊接工艺措施,采用熔化极富氩气体保护焊方法对40Cr Ni Mo A与Q345C异种钢进行焊接,并对焊接接头进行无损检测、金相组织观察和力学性能试验。试验结果表明,所制定的焊接工艺能够获得满意的焊接接头质量。
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