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首页> 外文会议>International Workshop on Advanced Metallic Materials and Processing Techniques for Aeronautical Applications; 20051118-20; Nanjing(CN) >Precise laser welding of austenitic stainless steel
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Precise laser welding of austenitic stainless steel

机译：奥氏体不锈钢的精确激光焊接

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摘要

The welding parameters and quality of 0Cr18Ni9 austenitic stainless steel via laser penetrate welding were investigated, which was aimed to realize its precise laser welding with weld depth more than 2.5 mm and weld deformation as small as possible. The welding parameters mainly include energy parameters (laser power and welding velocity) , light factors (focus offset, beam offset and method to focus) and environment factors (type and flux of protecting gas). The test results demonstrate that the energy parameters have crucial effect on weld depth, which nearly increase linearly with the increase of laser power or the decrease of weld velocity, the light factors have certain effect on the wed depth, specially, which decreases obviously when beam offset exceeds 0.45 mm. The temperature increment at the position of 5 mm away from weld centerline is less than 100℃ and the weld deformation is the axial shrinkage with depth less than 0.1 mm.
机译：研究了0Cr18Ni9奥氏体不锈钢激光熔焊的焊接参数和质量，旨在实现其焊接深度大于2.5 mm且焊接变形尽可能小的精确激光焊接。焊接参数主要包括能量参数（激光功率和焊接速度），光因数（聚焦偏移，光束偏移和聚焦方法）和环境因素（保护气体的类型和通量）。测试结果表明，能量参数对焊接深度有关键影响，随着激光功率的增加或焊接速度的降低，能量参数几乎呈线性增加，光因子对焊接深度有一定影响，特别是当束流时，焊接深度明显减小。偏移量超过0.45毫米。距焊缝中心线5 mm处的温度增量小于100℃，焊缝变形为轴向收缩，深度小于0.1 mm。

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