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工艺参数对哈氏合金薄板激光填丝焊接变形的影响

Effect of Parameters on Welding Deformation of Laser Welding Hastelloy Thin Sheets with Filler Wire

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摘要

研究了激光填丝焊接工艺参数对哈氏合金薄板纵向挠曲变形的影响,结合样件弯曲刚度和等效载荷分析了焊接工艺参数对纵向挠曲变形的影响。结果表明:激光填丝焊接过程的线能量和相对送丝量通过影响弯曲刚度和等效载荷,进而影响纵向挠曲变形;随着线能量的逐渐增大,等效载荷也逐渐增大,样件的弯曲刚度呈减小—增大—减小的变化趋势。在一定范围内增大线能量会使等效载荷和弯曲刚度同时增大,从而导致挠曲变形的变化幅度相对较小。相对送丝量增大使弯曲刚度在等效载荷不变的情况下明显增大,从而导致焊接变形减小。在合理的参数范围内尽量选择小线能量和大相对送丝量有利于抑制变形。

Abstract

Herein, the effect of parameters on the longitudinal flexure deformation in laser welding Hastelloy C-276 using the filler wire process is evaluated by combining bending stiffness and load analyses. Results show that the linear heat input and relative wire speed can affect the longitudinal flexure deformation through the bending stiffness and equivalent load. As the linear heat input increases, the equivalent load also gradually increases, and the bending stiffness shows a decreasing→increasing→decreasing trend. Moreover, the equivalent load and bending stiffness will simultaneously increase when the linear heat input increases in a certain range, resulting in a relatively small change in flexure deformation. By increasing the relative wire speed, the bending stiffness of sample is improved, thereby causing a significant reduction in the welding deformation. By selecting small linear heat input and large relative wire speed within reasonable parameters, welding deformation can be restrained.

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中图分类号:TG404

DOI:10.3788/LOP57.131404

所属栏目:激光器与激光光学

基金项目:国家重点研发计划、国家重点基础研究发展计划;

收稿日期:2019-10-08

修改稿日期:2019-10-31

网络出版日期:2020-07-01

作者单位    点击查看

吴东江:大连理工大学精密与特种加工教育部重点实验室, 辽宁 大连 116024
刘俊:大连理工大学精密与特种加工教育部重点实验室, 辽宁 大连 116024
唐博凯:大连理工大学精密与特种加工教育部重点实验室, 辽宁 大连 116024
刘德华:大连理工大学精密与特种加工教育部重点实验室, 辽宁 大连 116024
马广义:大连理工大学精密与特种加工教育部重点实验室, 辽宁 大连 116024
牛方勇:大连理工大学精密与特种加工教育部重点实验室, 辽宁 大连 116024
姚振强:上海交通大学机械工程学院, 上海 200240

联系人作者:马广义(gyma@dlut.edu.cn)

备注:国家重点研发计划、国家重点基础研究发展计划;

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引用该论文

Wu Dongjiang,Liu Jun,Tang Bokai,Liu Dehua,Ma Guangyi,Niu Fangyong,Yao Zhenqiang. Effect of Parameters on Welding Deformation of Laser Welding Hastelloy Thin Sheets with Filler Wire[J]. Laser & Optoelectronics Progress, 2020, 57(13): 131404

吴东江,刘俊,唐博凯,刘德华,马广义,牛方勇,姚振强. 工艺参数对哈氏合金薄板激光填丝焊接变形的影响[J]. 激光与光电子学进展, 2020, 57(13): 131404

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