李春凤,肖笑,尹玉祥,李晨,张柯柯

• 1:河南科技大学材料科学与工程学院
• 2:有色金属共性技术河南省协同创新中心

摘要(Abstract)：

TIG(钨极惰性气体保护焊)电弧增材制造由于其材料利用率高、成形效果好等显著优势,已成为制造业研究的热点。本文从数值模拟的角度,着重总结了TIG增材熔滴过渡、热累积和熔池行为3个方面的重要结果。成形工艺参数决定熔滴过渡形式和频率,而熔滴的过渡形式和过渡频率直接影响沉积层的成形质量;热累积影响着成形件的微观组织和应力,可通过控制层间冷却时间来减少热累积;在进行TIG增材熔池数值模拟时,多选择高斯热源和双椭球热源模型。基于以上对TIG电弧增材制造的分析研究,对TIG电弧增材制造的研究方向进行了展望,主要包括建立熔滴与熔池的物理耦合模型和改进电弧热源模型两方面。

关键词(KeyWords)： TIG电弧增材制造;数值模拟;熔滴过渡;热累积;熔池行为

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51705137);; 中国博士后面上项目(2018M070)

作者(Author): 李春凤,肖笑,尹玉祥,李晨,张柯柯

DOI: 10.13289/j.issn.1009-6264.2020-0041

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