SPATTER AND FUME REDUCTION IN CO2 GAS-SHIELDED ARC WELDING BY REGULATED GLOBULAR TRANSFER

被引：11
作者：
Yamazaki, K. [1 ]
Suzuki, R. [1 ]
Shimizu, H. [1 ]
Koshiishi, F. [1 ]
机构：
[1] Kobe Steel Ltd, Welding Business, Kanagawa, Japan
来源：
WELDING IN THE WORLD | 2012年 / 56卷 / 9-10期
关键词：
CO2; Controls; Fume; Gas shielded arc welding; Globular transfer; Spatter; Waveform;
D O I：
10.1007/BF03321376
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The CO2 gas-shielded arc welding process with solid wire is widely used in Japan due to its good weld quality, high efficiency and reasonable wire and shielding gas costs. However, this process has its drawbacks, especially in the globular transfer mode at a high welding current, where significant amounts of spatter and fume are generated. To solve this problem, the author has investigated how to control globular transfer with a special pulsed current and has developed a regulated method and power source for practical use. The present report discusses the mechanism of this new method of regulating the globular transfer of molten droplets, in which each droplet is squeezed at its upper part in peak current duration and is detached silently in base current duration. Also various effects are reported concerning this new method and its application in the welding robot system for fabricating steel frames for buildings.
引用
收藏
页码：12 / 19
页数：8
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