Optimization of wire feed for GTAW based additive manufacturing
Optimization of wire feed for GTAW based additive manufacturing
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基于 GTAW 的增材制造的送丝优化
DOI：
10.1016/j.jmatprotec.2016.11.027
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发表时间：
2017-05-01
影响因子：
6.3
通讯作者：
Zhang, Fusheng
中科院分区：
文献类型：
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作者：
Geng, Haibin;Li, Jinglong;Zhang, Fusheng
在基于气体保护钨极气体保护焊(GTAW)的添加剂制造中，当焊丝横向送入时，会遇到熔敷精度问题。建立了计算弧区焊丝飞行距离的数学模型，并在此基础上设计了保证尺寸精度的位移补偿方案。当弧长为5 mm，焊丝顶端与钨电极的垂直距离大于3 mm时，熔化丝尖与钨电极轴线的水平距离为3.5 mm。通过形成交叉角，验证了位移补偿的有效性。该模型还可以用来实现桥联转移，这有利于光滑的层外观。(C)2016爱思唯尔B.V.保留所有权利。
The problem of deposition accuracy is encountered during gas tungsten arc welding (GTAW) based additive manufacturing when wire is fed in side direction. A mathematical model was developed to calculate the wire flying distance in arc zone, according to which displacement compensation was designed to ensure the size accuracy. When arc length was 5 mm and vertical distance of wire tip to tungsten electrode was larger than 3 mm, the horizontal distance between melting wire tip and axis of tungsten electrode was 3.5 mm. The displacement compensation was verified to be effective by forming cross-angle. The model can also be used to achieve bridging transfer, which is beneficial for smooth layer appearance. (C) 2016 Elsevier B.V. All rights reserved.