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co2 qi bao han han qiang bai dong dui han feng zu zhi xing neng de ying xiang
Author(s): 
Pages: 64-66
Year: Issue:  8
Journal: Welding Technology

Keyword:  焊接操作摆动焊道宽度药芯焊丝气保焊热输入冲击韧性影响;
Abstract: 通过不同的焊枪摆动宽度,研究了焊缝宽度对焊缝性能的影响,对3组试板进行拉伸和冲击试验,并观察了焊缝金属显微金相组织,分析了焊接热输入对焊缝金属力学性能的影响。试验结果表明,采用不同层道次焊接时,累计热输入更能反映对焊缝组织性能的影响,累计热输入过高时焊接接头强度韧性明显不足,焊枪摆动宽度较大时焊接过程相对难以把控,需提高摆动速率,并维持焊接稳定性。
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