摘要
基于冷金属过渡技术,研究了全封闭薄壁中空环形件的电弧增材制造工艺.首先在单层单道熔敷层圆弧形截面轮廓的基础上推导了单道多层熔敷层的叠加数学模型;其次建立了可根据薄壁结构尺寸获取合理工艺参数的等体积电弧增材模型,最后通过试验数据验证了模型的可靠性.基于该模型,建立了工艺参数(送丝速度、电弧移动速度)与成形件尺寸之间的关系,在优化的增材工艺下成形出了外观质量良好的薄壁中空环形工件,并将成形件扫描得到的实际轮廓与理论轮廓进行对比,验证了叠加模型和等体积增材模型的准确性以及工艺的可行性.
Enclosed thin-walled circular structure was studied by CMT technology based WAAM.The overlaying mathematical model for single-pass multi-layer is firstly constructed on the basis of circular arc profile of single-pass single-layer;then an equal-volume melting metal for each layer was proposed and applied for actual manufacturing process and testified the feasibility.On account of the aforementioned model,the process parameters corresponding to the size of the thin-walled structure were also established and used for fabricating the parts.The enclosed thin-walled circular structure with fairly high appearance was obtained under the optimized process parameters.The scanned outline profile was also compared to the theoretical outline,and the results showed a good match between them.
作者
薛丁琪
阮鹏祥
程诗文
张种种
耿海滨
韩绍华
XUE Dingqi;RUAN Pengxiang;CHENG Shiwen;ZHANG Zhongzhong;GENG Haibin;HAN Shaohua(Fuzhou University,Fuzhou 350108,China)
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2021年第4期42-48,I0002,I0003,共9页
Transactions of The China Welding Institution
基金
国家自然科学基金资助项目(51805088)
福建省自然科学基金资助项目(2017J05077).
关键词
电弧增材制造
冷金属过渡
单道多层叠加模型
等体积增材模型
中空环形件
wire and arc additive manufacturing
cold metal transfer
single-pass multi-layer overlay model
equal-volume additive model
enclosed thin-walled circular structure
