不锈钢轨道车辆激光焊质量参数控制工艺研究
Investigation of Controlling Process of Laser Welding Parameters on Stainless Steel Railway Vehicle

作者: 刘立国 , 马金宝 :中车长春轨道客车股份有限公司,吉林 长春 ;

关键词: 激光焊接工艺参数接头强度表面质量Lap Laser Welding Laser Welding Parameters Joint Strength Appearance Quality

摘要:
目前不锈钢轨道客车车体多采用电阻点焊工艺,但焊点处存在明显的压痕,影响不涂装车体外观质量。部分熔透激光焊技术的研发可以作为解决电阻点焊不锈钢车体弊端的有效手段。为此研发部分熔透型激光搭接焊工艺以期改善车体的表面质量及气密性,并保证接头强度高于电阻点焊接头。进行不锈钢激光焊接工艺试验,考察激光焊接工艺参数(激光功率、焊接速度、离焦量)对接头强度和外观质量的影响规律,从而通过调整激光焊接工艺参数来控制不锈钢激光焊接头质量。

Abstract: Currently, stainless steel railway vehicles body and structure are usually assembled by resistance spot welding process. The weak points of this process are the poor surface quality and bad airtight due to the pressure of electrodes. The partial penetration lap laser welding is investigated as a solution for the disadvantages of resistant spot welding stainless steel railway vehicles. In this paper the tests of parameters of laser welding including laser power, welding speed and focus distance were performed to get the influence to the strength and appearance quality. Through ad-justing the parameters we can get good quality of laser welding joint.

文章引用: 刘立国 , 马金宝 (2016) 不锈钢轨道车辆激光焊质量参数控制工艺研究。 机械工程与技术, 5, 115-119. doi: 10.12677/MET.2016.52015

参考文献

[1] 薛克仲. 城市轨道车辆车体材料选择[J]. 城市轨道交通研究, 2003(1): 14-19.

[2] 平山鸟利行. 车体的不锈钢搭接焊技术和口琴式铝型材的FSJ技术[J]. 川崎重工报, 2006(1): 50-53.

[3] 米谷弘. 车体制造中的新型激光焊接技术[J]. 国外机车车辆工艺, 2008, 7(4): 1-4.

[4] JISG 4305:1999. 冷轧不锈钢板及钢带技术标准[S]. 日本标准协会, 1999.

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