铝合金激光-电弧复合增材制造工艺分析

发布时间：2018-03-11 02:14

本文选题：增材制造　切入点：激光-MIG复合热源　出处：《焊接技术》2016年10期 　论文类型：期刊论文

【摘要】：复合热源能够发挥两者各自的优势,同时弥补两者各自的不足。采用基于弧焊的金属材料增材制造技术进行墙体堆积过程中,层间停留时间成为影响焊接性能的一个重要焊接参数。使用熔化极气体保护焊(MIG焊),通过改变不同的层间停留时间,对5356铝合金增材制造过程进行研究。研究表明,采用常规熔化极气体保护焊进行多层单道堆积墙体时,对不同层间停留时间进行控制,墙体可以获得较好的力学性能。在最佳的层间停留时间下,采用低功率激光电弧复合热源,通过适当的激光电弧能量匹配,可以进一步提高墙体的力学性能和墙体组织的均匀性。
[Abstract]:The composite heat source can give play to their respective advantages and make up for their respective shortcomings. The metal material augmentation manufacturing technology based on arc welding is used in the process of wall stacking. The interlaminar residence time is an important welding parameter affecting the welding performance. By changing the different interlayer residence time of MIG welding, the fabrication process of 5356 aluminum alloy is studied. When conventional gas arc welding is used for multilayer and single-pass stacking wall, different interlayer residence time can be controlled, and better mechanical properties can be obtained. Under the optimum interlayer residence time, The mechanical properties of the wall and the homogeneity of the wall structure can be further improved by using the low power laser arc composite heat source and the proper matching of the laser arc energy.
【作者单位】：大连理工大学辽宁省先进连接技术重点实验室;
【基金】：中央高校基本科研业务费专项资金资助(DUT16LAB09)
【分类号】：TG457.14

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