Controlling of Laser Welding Porosities of Brass Based on Filled Intermediate Layer of Copper

被引：0

作者：

Chen M. ^{[1
]}

Zhou G. ^{[1
,2
,3
]}

Wu S. ^{[2
]}

Liu F. ^{[1
]}

Zhang H. ^{[1
]}

机构：

[1] College of Mechanical Engineering and Automation, Huaqiao University, Xiamen, 362021, Fujian

[2] Beijing Engineering Researching Center of Laser Technology, Beijing University of Technology, Beijing

[3] State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, 150001, Heilongjiang

来源：

Zhongguo Jiguang/Chinese Journal of Lasers | 2019年 / 46卷 / 03期

关键词：

Brass; Copper intermediate layer; Laser technique; Laser welding; Welding porosity;

D O I：

10.3788/CJL201946.0302011

中图分类号：

学科分类号：

摘要：

The control of brass welding porosity is studied by adopting a new method of the intermediate transition layer. The weld porosities of brass laser welding under the copper intermediate layer condition and brass general butt laser welding are contrasted and analyzed. The research results reveal that the porosities of weld surface and weld interior are greatly reduced under the condition of the intermediate layer. As the welding speed increases, the porosity decreases gradually. The porosity is almost zero when the welding speed is 2.2 mm/s. When the welding parameters are the same, the porosity of the weld under the intermediate layer condition is barely one third of that in the normal butt laser welding of brass sheet. The mechanical properties of welded joint obtained at the intermediate layer condition is superior to that of welded joint obtained at normal butt laser welding. Under the premise of good weld formation, the effectiveness of the new method of the copper intermediate layer to control the porosity defects of brass laser welding is verified. © 2019, Chinese Lasers Press. All right reserved.

引用

共 14 条

[1] Duan H.F., Luo K.Y., Lu J.Z., Friction and wear properties of H62 brass subjected to laser shock peening, Acta Optica Sinica, 38, 10, (2018)
[2] Zhou L., Li Z.Y., Song X.G., Et al., Influence of laser offset on laser welding-brazing of Al/brass dissimilar alloys, Journal of Alloys and Compounds, 717, pp. 78-92, (2017)
[3] Qi X.Y., Zhang W., Yu S.W., Et al., Microstructure and mechanical property of laser weld of C18000 copper alloy, Laser & Optoelectronics Progress, 54, 7, (2017)
[4] Zhang C., Gao M., Wang D.Z., Et al., Relationship between pool characteristic and weld porosity in laser arc hybrid welding of AA6082 aluminum alloy, Journal of Materials Processing Technology, 240, pp. 217-222, (2017)
[5] Yu J., Cho S.M., Metal-cored welding wire for minimizing weld porosity of zinc-coated steel, Journal of Materials Processing Technology, 249, pp. 350-357, (2017)
[6] Yang Y.H., Lei Z.L., Li B.W., Et al., Analysis of porosity characteristics of D406A ultrahigh strength steel after laser-TIG hybrid weld with filler metal, Transactions of the China Welding Institution, 38, 12, pp. 114-118, (2017)
[7] Zhou X.K., Mi G.Y., Liu S., Et al., Laser lap welding of 304 stainless steel/T2 red copper ultra-thin sheets, Chinese Journal of Lasers, 44, 8, (2017)
[8] Dong P., Chen K.H., Xiao R.S., Mechanical properties of aluminum-copper joint by laser penetration brazing, Chinese Journal of Lasers, 38, 6, (2011)
[9] Zhang J., Shan J.G., Wen P., Et al., Effects of welding parameters on weld porosity during CO<sub>2</sub> laser welding of die-cast magnesium alloys, Transactions of the China Welding Institution, 32, 5, (2011)
[10] Shan J.G., Zhang J., Zheng S.Q., Et al., Experimental study on pores in laser welding of magnesium alloys, Rare Metal Materials and Engineering, 38, pp. 234-239, (2009)

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