Single vision system for simultaneous observation of keyhole and weld pool in plasma arc welding

被引：47

作者：

Zhang, Guokai ^{[1
,2
]}

Wu, Chuan Song ^{[1
,2
]}

Liu, Xinfeng ^{[1
,2
]}

机构：

[1] Shandong Univ, MOE Key Lab Liquid Solid Struct Evolut & Mat Proc, Jinan 250061, Peoples R China

[2] Shandong Univ, Inst Mat Joining, Jinan 250061, Peoples R China

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2015年 / 215卷

基金：

中国国家自然科学基金;

关键词：

Simultaneous observation; Keyhole; Weld pool; Plasma arc welding; Single vision sensor; Welding process parameters; PENETRATION; BEHAVIOR;

D O I：

10.1016/j.jmatprotec.2014.07.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A common CCD camera was equipped with a specially designed filter to constitute a vision system, which was used to capture the weld pool and the keyhole images during plasma arc welding process. Through image processing and calibration, the shapes and sizes of both the keyhole and the weld pool were measured under different welding conditions. The dynamic variations of the keyhole/weld pool sizes with time and their relations with the main process parameters were experimentally determined. Six stages of the keyhole/weld pool evolution were observed during the whole welding process. The observation results lay solid foundation for optimizing the welding process parameters and implementing process control of plasma arc welding. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：71 / 78

页数：8

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