宋刚

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

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A Novel Method of Triple-Wire Gas Indirect Arc Welding

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论文类型:期刊论文

发表时间:2016-02-17

发表刊物:MATERIALS AND MANUFACTURING PROCESSES

收录刊物:SCIE、EI、Scopus

卷号:31

期号:3

页面范围:352-358

ISSN号:1042-6914

关键字:Angle; Beads; Indirect-arc; Metal transfer; Pulse current; Pulsed-DC; Stability; Triple-wire

摘要:This paper proposes a novel triple-wire gas indirect arc welding process. The welding system consists of two power sources and three wires. The effects of the power source mode and the wire configuration on arc stability and behavior are studied. The metal transfer is analyzed and bead-on-plate welding is employed. Results show that two direct current power sources cannot produce a stable process, but the combination of a direct current with a pulsed direct current can produce a stable process. The reason is that the pulsed direct current can boost and stabilize the metal transfer. For the wire configuration, a smaller contact angle between the main wire and the side wire is more desirable. Compared with the traditional gas metal arc welding, this novel process has the advantages of high wire melting rate, low penetration depth, and low dilution rate. Compared with twin-wire gas indirect arc welding, it provides a broader range of applicable currents with sufficient heat input.