摘要
为了提高不锈钢电弧增材工艺的增材效率,利用308不锈钢丝材在304不锈钢基体上进行电弧增材。利用正交试验法设计工艺参数,运用光学显微镜分析增材组织的形貌,通过显微硬度计测试增材组织的显微硬度分布。依据熔覆层的熔池尺寸,采用PCA-TOPSIS法作为评价方法。以熔宽、余高最大,熔深最小为优化目标,通过MATLAB计算得出最佳工艺参数为电弧电流I=200 A,焊接速度V_(s)=42 cm/min,送丝速度V_(f)=180 cm/min。结果表明,该工艺参数下的熔覆层与基体呈现良好的冶金结合,无气孔和裂纹等缺陷。
In order to improve the additive efficiency of the stainless steel fabricated by the wire arc additive manufacturing,the 308 stainless steel wire was used to conduct the arc additive on the 304 stainless steel matrix.The processing parameters were designed by using the orthogonal test,the microstructure of the additive tissue was analyzed by using optical microscope,and the microhardness distribution of the additive tissue was tested by microhardness tester.The PCA-TOPSIS(Principal Component Analysis-Technique for Order Preference by Similarity to an Ideal Solution)method was used to evaluate the melting size of cladding.For the optimization objectives of melting width,maximum melting height and minimum melting depth,the optimal processing parameters were obtained thatthe arc current I was 200 A,welding speed V_(s) was 42 cm/min,and wire feeding speed V_(f) was 180 cm/min via Matlab.Under the processing parameters,the cladding layer shows the good metallurgical bonding with the matrix,and there are no defects such as pores and cracks.
作者
姜宇杰
陈菊芳
赵彩虹
李小平
JIANG Yujie;CHEN Jufang;ZHAO Caihong;LI Xiaoping(School of Mechanical Engineering,Jiangsu University of Technology,Changzhou 213000,Jiangsu,China;School of Mechanical Engineering,Changshu University of Technology,Changshu 215500,Jiangsu,China;School of Materials Engineering,Jiangsu University of Technology,Changzhou 213000,Jiangsu,China)
出处
《机械科学与技术》
CSCD
北大核心
2021年第4期579-585,共7页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(51975264)
江苏省研究生科研与实践创新计划项目(SJCX19_0702)
江苏理工学院横向项目(KYH18058)
江苏理工学院横向项目(KYH19178)资助。
关键词
电弧增材
增材效率
工艺参数
PCA-TOPSIS法
wire arc additive manufacturing
additive efficiency
processing parameters
PCA-TOPSIS method
作者简介
姜宇杰(1994−),硕士研究生,研究方向为不锈钢电弧增材制造,121697807@qq.com;通信作者:陈菊芳,教授,硕士生导师,jfchen@jsut.edu.cn。
