机器人自动焊焊接接头低温冲击韧性优化研究  

Low Temperature Impact Toughness Improving Research on Robot Automatic Welding Joint

作　　者：李连波[1] 孙有辉[1] 马丽[1] 舒欣欣[1] 赵翠华[1] 张德文 隋喜斌 LI Lianbo;SUN Youhui;MA Li;SHU Xinxin;ZHAO Cuihua;ZHANG Dewen;SUI Xibin(Offshore Oil Engineering Co.,Ltd.,Tianjin 300452,China)

机构地区：[1]海洋石油工程股份有限公司,天津300452

出　　处：《电焊机》2023年第6期129-134,共6页Electric Welding Machine

摘　　要：在机器人全自动焊接工艺开发过程中,存在其焊接接头低温冲击功不满足焊接标准要求或者离散度较大的现象。为解决此问题,针对多个可能影响机器人自动焊焊接接头低温冲击韧性的因素,制定不同的焊接方案,进行焊接试验及焊后焊接接头低温冲击功测试,并对得到的数据进行离散度分析。经对比发现,不同影响因素对于焊接接头低温冲击韧性影响大小不一,热输入及焊材牌号的影响最大。施工效率最高的焊接方案为:采用M60焊材,以1.0~1.25 kJ/mm的热输入焊接,采用气刨清根并配以打磨,背面填充采用药芯气保焊,配以L71焊材焊接,按照此方案开展实验,结果表明焊接接头的低温冲击功在-40℃时仍满足规范要求。The low temperature impact energy of welding joint does not meet the requirements of welding standard or is with a large dispersion as robot automatic welding specification developing.In order to solve this problem,this paper formulate different welding schemes according to the factors that may affect the low temperature impact toughness of the robot automatic welding joint,carried out the low temperature impact energy of the joints after welding,and analyzed the dispersion of the obtained data.It is found that different influencing factors have different effect on the low temperature impact toughness of welding joints.Finally,a welding scheme for robot automatic welding with the highest construction efficiency was designed.According to this scheme,experiments were carried out.The results show that the low temperature impact energy of the joint is acceptable by the welding standard at-40℃.

关 键 词：海洋工程钢结构 机器人自动焊 低温冲击 焊接工艺 

分 类 号：TG409[金属学及工艺—焊接]