金属与金属基复合材料
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电弧增材制造单道单层工艺特性研究
张金田1 , 王杏华1 , 王涛1 , 马晓蕾2 , 杨海欧2
1 中国船舶重工集团公司第七二五研究所,洛阳471023 2 西北工业大学凝固技术国家重点实验室,西安710072
Study on the Processing Characteristics of Single-Bead and Single-Layer in the WAAM
ZHANG Jintian1 , WANG Xinghua1 , WANG Tao1 , MA Xiaolei2 , YANG Hai′ou2
1 Luoyang Ship Material Research Institute, Luoyang 471023,China 2 State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi′an 710072, China
摘要 采用冷金属过渡(CMT)技术,围绕船用高强钢电弧增材制造(WAAM)的单道单层工艺特性开展研究,通过考察不同配比的保护气成分、送丝速度、焊接速度三种工艺参数下单道单层的工艺特性,结合不同工艺条件下单道单层的熔宽、余高、过渡角、截面面积等参数的测量,掌握了以上三种关键工艺参数对单道单层形貌的影响规律,并通过数学分析的方法,建立了能够准确预测80%Ar+20%CO2 混合气体保护下单道单层截面轮廓的全周期余弦函数模型,其与实际测量的结果基本一致,为后续单道多层、多道多层的电弧增材成形控制提供了基础。
关键词:
冷金属过渡
电弧增材制造
单道单层
截面轮廓模型
Abstract: The cold metal transfer (CMT) technology was used to study the single-bead and single-layer process characteristics of marine high-strength steel wire and arc additive manufacturing (WAAM). By testing three process parameters of the protection gas different ratios, wire feeding speed (v s ) and welding speed (v w ) under the single welding bead characteristics, combined with the measurement of welding bead width, height, wetting angle and bead cross-section area under different process conditions, mastered the law of influence above three key process parameters. By the method of mathematical analysis, and full-period cosine function model which could accurately predict the single bead cross-section contour under the protection of 80% Ar+20% CO2 mixed gas was established, which is basically consistent with the actual measurement results. It provided the basis for forming control of multi-layer WAAM.
Key words:
cold metal transfer (CMT)
wire and arc additive manufacturing (WAAM)
single-bead and single-layer
cross section contour
出版日期: 2020-12-25
发布日期: 2020-12-24
基金资助: 科技部重点研发计划资助项目(2018YFB1105804)
通讯作者:
yanghaiou@nwpu.edu.cn
作者简介: 张金田,中国船舶重工集团公司第七二五研究所,硕士,工程师。主要从事金属增材制造方向的研究,参与科技部重点研发项目、工信部高技术船舶项目、军委科技委创新特区项目等,发表论文2篇,申报专利2项。 杨海欧,西北工业大学,副研究员,硕士研究生导师,长期从事金属增材制造前沿教学与研究,主要研究方向是高性能金属增材制造、面向增材制造的创新设计和增材制造的应用示范。先后主持包括国家自然科学基金、科工局、科技部重点研发计划等多项课题,在核心刊物发表论文40余篇,SCI收录20余篇。
引用本文:
张金田, 王杏华, 王涛, 马晓蕾, 杨海欧. 电弧增材制造单道单层工艺特性研究[J]. 材料导报, 2020, 34(24): 24132-24137.
ZHANG Jintian, WANG Xinghua, WANG Tao, MA Xiaolei, YANG Hai′ou2,. Study on the Processing Characteristics of Single-Bead and Single-Layer in the WAAM. Materials Reports, 2020, 34(24): 24132-24137.
链接本文:
http://www.mater-rep.com/CN/10.11896/cldb.19110204
或
http://www.mater-rep.com/CN/Y2020/V34/I24/24132
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