个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:材料科学与工程学院
学科:材料连接技术
办公地点:材料学院铸造工程中心406
联系方式:0411-84707817
电子邮箱:songgang@dlut.edu.cn
Analysis of arc stability and bead forming with high-speed TW-GIA welding
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论文类型:期刊论文
发表时间:2019-10-01
发表刊物:JOURNAL OF MANUFACTURING PROCESSES
收录刊物:EI、SCIE
卷号:46
页面范围:67-76
ISSN号:1526-6125
关键字:TW-GIA; Arc stability; Droplet transfer; High-speed welding
摘要:Triple-wire gas indirect arc (TW-GIA) welding is a new type of welding method. In the TW-GIA welding process, the workpiece is not connected to the power source, and the arc is built between the three wires. In this essay, the arc stability and bead forming of the high-speed TW-GIA welding are studied under a new wire arrangement. Results show that with the increasing of the welding currents, the range of voltage and current fluctuations are reduced during the welding process, and the arc stability is improved. The reason is that increasing current can stabilize the droplet transfer. Since the arc is built between the welding wires, the influence of welding speed on the arc stability of TW-GIA welding is limited. Compared with traditional gas metal arc welding, TW-GIA welding has the characteristics of high deposition rate and low dilution rate, which is helpful for increasing welding speed. The welding speed of 2 mm-thickness steel plate can reach 2.8 m/min by using TW-GIA welding.