Image processing of weld pool and keyhole in Nd:YAG laser welding of stainless steel based on visual sensing

被引：36

作者：

Gao Jin-qiang ^{[1
]}

Qin Guo-liang ^{[1
]}

Yang Jia-lin ^{[2
]}

He Jian-guo ^{[2
]}

Zhang Tao ^{[1
]}

Wu Chuan-song ^{[1
]}

机构：

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

[2] China Acad Engn Phys, Inst Machinery Mfg Technol, Mianyang 621900, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2011年 / 21卷 / 02期

基金：

中国国家自然科学基金;

关键词：

laser welding; keyhole; weld pool; edge; image processing algorithm;

D O I：

10.1016/S1003-6326(11)60731-0

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In order to obtain good welding quality, it is necessary to apply quality control because there are many influencing factors in laser welding process. The key to realize welding quality control is to obtain the quality information. Abundant weld quality information is contained in weld pool and keyhole. Aiming at Nd:YAG laser welding of stainless steel, a coaxial visual sensing system was constructed. The images of weld pool and keyhole were obtained. Based on the gray character of weld pool and keyhole in images, an image processing algorithm was designed. The search start point and search criteria of weld pool and keyhole edge were determined respectively.

引用

页码：423 / 428

页数：6

共 15 条

[1] Experimental observation of keyhole shapes in the laser welding of aluminum blanks [J].

Aalderinka, B. J. ;

Aarts, R. G. K. M. ;

de Lange, D. F. ;

Meijer, J. .

JOURNAL OF LASER APPLICATIONS, 2007, 19 (04) :245-251

[2]

ABELS P, 1999, ICALEO 99 E, P99

[3]

BEERSIEK J, 2001, ICALEO 2001 F, P206

[4]

[段爱琴 DUAN Aiqin], 2005, [焊接学报, Transactions of the China Welding Institution], V26, P17

[5]

[方俊飞 FANG Junfei], 2006, [焊接学报, Transactions of the China Welding Institution], V27, P57

[6]

KAMIMUKI K, 2002, WELDING INT, V16, P212

[7]

KAWAHITO Y, 2009, Q J JPN WELD SOC, V27, P183

[8] Stability information in plasma image of high-power CO2 laser welding [J].

Li, Guohua ;

Cai, Yan ;

Wu, Yixiong .

OPTICS AND LASERS IN ENGINEERING, 2009, 47 (09) :990-994

[9]

MATSUMOTO N, 2008, ICALEO 08, P387

[10] Dynamics of keyhole and molten pool in high power CO2 laser welding [J].

Matsunawa, A ;

Seto, N ;

Kim, JD ;

Mizutani, M ;

Katayama, S .

HIGH-POWER LASERS IN MANUFACTURING, 2000, 3888 :34-45

← 1 2 →