Wire filling laser multilayer welding of high strength steel thick plate

被引：4

作者：

Li, Liqun ^{[1
]}

Tao, Wang ^{[1
]}

Zhu, Xianliang ^{[1
]}

机构：

[1] State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology

来源：

Zhongguo Jiguang/Chinese Journal of Lasers | 2009年 / 36卷 / 05期

关键词：

Dual laser beam; High strength steel thick plate; Hot wire; Laser multilayer welding; Laser technique; Narrow gap;

D O I：

10.3788/CJL20093605.1251

中图分类号：

学科分类号：

摘要：

Characteristics of laser multilayer welding of 16-mm thick high strength steel 11CrNi3MnMoV with filler metal in different energy input modes are studied. A narrow gap groove is designed, and dual beam single pass multilayer laser welding with filler metal is carried out. By comparing the weld forming characteristics of single with dual beam laser welding with filler metal, porosity and incomplete fusion is regarded as the main defect of the joint. Moreover, the welding stability and alignment state of wire is obviously improved when the duel beam is used. At the same time, the welding defect, i. e. porosity, is impressed sharply. In addition, problems of incomplete fusion and narrow girdling are solved in the case of combining interbedded heat preservation and hot wire technology. As an optimized welding technology, the tensile strength of the joint processed by dual beam laser welding with hot wire can come up to 97% of matrix metal. Dimple shear fracture is the main failure mode at the fracture surface.

引用

页码：1251 / 1255

页数：4

共 10 条

[1]

Dadras S., Torkamany M.J., Sabbaghzadeh J., Spectroscopic characterization of low-nickel copper welding with pulsed Nd:YAG laser, Optics and Lasers in Engineering, 46, 10, pp. 769-776, (2008)

[2]

Qi J., Niu Z., Zhang D., Et al., Control of shaping of welds for CO<sub>2</sub> laser welding shipbuilding T-section aluminum alloy, Chinese J. Lasers, 35, 2, pp. 297-302, (2008)

[3]

Yang X., Wang Y., Ying C., Et al., Microstructure and properties of high power laser welding of ship steel plate, Chinese J. Lasers, 34, 6, pp. 866-870, (2007)

[4]

Wang W., Chen L., Zhao X., Et al., Effect of welding parameters on formation of welds during laser welding of NiTi shape memory alloy, Chinese J. Lasers, 35, 2, pp. 291-296, (2008)

[5]

Chen L., Hu X., Hu L., Characteristics on laser beam welded high strength steel, New Technology and New Process, 34, 11, pp. 26-28, (2002)

[6]

Mei H., Xiao R., Zuo T., The study on laser welding with filler wire, Journal of Beijing Polytechnic University, 3, 22, pp. 38-41, (1996)

[7]

Caironi G., Coffetti M., Problems linked to laser welding of components having large thicknesses, 15th World Conference on Non-Destractive Testing, 45, 2, pp. 16-24, (2002)

[8]

Wu S., Yang W., Dong P., Et al., Microstructure and properties of welded joint for narrow gap laser welding of 42CrMo steel bevel gear shaft, Transactions of the China Welding Institution, 28, 4, pp. 25-28, (2007)

[9]

Yao W., Gong S., Steve S., Twin spot laser welding characteristics of aluminum alloy, Transactions of the China Welding Institution, 28, 4, pp. 3-8, (2007)

[10]

Onozuka M., Alfile J.P., Aubert Ph., Et al., Manufacturing and maintenance technologies developed for a thick-wall structure of the ITER vacuum vessel, Fusion Engineering and Design, 55, 4, pp. 397-410, (2001)

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