Analysis and evaluation of arc stability of self-shielded flux-cored wire in all-position welding

被引：0

作者：

Zhang, Tianli ^{[1
]}

Li, Zhuoxin ^{[2
]}

Jing, Hongyang ^{[1
]}

Li, Guodong ^{[2
]}

Li, Hong ^{[2
]}

Song, Shaopeng ^{[2
]}

机构：

[1] School of Materials Science and Engineering, Tianjin University, Tianjin,300072, China

[2] College of Materials Science and Engineering, Beijing University of Technology, Beijing,100124, China

来源：

Hanjie Xuebao/Transactions of the China Welding Institution | 2014年 / 35卷 / 08期

关键词：

Probability distributions - Video cameras - High speed cameras - Probability density function - Drops - Stability;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The droplet transfer and arc stability of three kinds of self-shielded flux-cored wires in all-position welding applied in X70 pipeline steel were tested by using high-speed video camera and Hanover Analysator. The results showed that as for all-position welding arc stability, No. 1 wire was the best, No.3 wire the medium, and No.2 wire the worst; coefficient of current variability could reflect welding stability more accurately than standard deviation; average short-circuiting time could not be taken as the only way to judge welding arc stability, which should be judged by combining with class frequency distributions diagram of short-circuiting time. During short circuiting transfer, probability density distributions diagram of arc voltage was in double-hump shape, and probability density distributions of double-hump shape curve and convergence of the whole curve could be regarded as important references for evaluating welding arc stability.

引用

页码：99 / 102