Analysis of arc stability and bead forming with high-speed TW-GIA welding

被引：22

作者：

Liu, Liming ^{[1
]}

Yu, Shibao ^{[1
]}

Song, Gang ^{[1
]}

Hu, Chenghui ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Mat Sci & Engn, Key Lab Liaoning Adv Welding & Joining Technol, Dalian 116024, Peoples R China

来源：

JOURNAL OF MANUFACTURING PROCESSES | 2019年 / 46卷

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

TW-GIA; Arc stability; Droplet transfer; High-speed welding; DOUBLE-ELECTRODE GMAW; GAS; DEFECTS; PLASMA;

D O I：

10.1016/j.jmapro.2019.08.023

中图分类号：

T [工业技术];

学科分类号：

08 ;

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.

引用

页码：67 / 76

页数：10

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