CO_2焊熔滴短路过渡过程的分析与控制  

The Analysing and Controlling of Droplet Transfer Process During CO_2 Short Circuiting Arc Welding

作　　者：黄勇[1] 

机构地区：[1]北京工业大学材料科学与工程学院,北京100022

出　　处：《北京工业大学学报》1998年第3期76-80,共5页Journal of Beijing University of Technology

摘　　要：根据飞溅机理，对短路液桥收缩过程进行了深入分析和定量描述，指出短路液桥收缩过程规律并对液桥收缩程度进行了实时检测．在此基础上，首次提出了一种恒压与陡降复合的电源外特性，实现了对液桥收缩过程的实时控制，显著地降低了焊接飞溅。Based on the mechanism of spatter, the contracting process of short circuitingbridge is analysed and a quantitative description is given. The rules of the contractingprocess are shown and the contracting degree is tested on real bine. On the analysingbase, a specific power source, with the composite external characteristics of permanentvoltage and sudden fall, is proposed unprecedently. It controls the bridge contractingprocess in real bine, and results in a stable short circuiting arc welding process withmuch low spatter.

关 键 词：短路过渡过程 焊接飞溅 二氧化碳保护焊 

分 类 号：TG444.73[金属学及工艺—焊接]