Process Optimization of Cold Metal Transfer Plug Welding of Aluminum AA6061-T6-to-Galvanized DP590 Steel Based on Orthogonal Experiment Method
AbstractIn this paper, cold metal transfer (CMT) plug welding of aluminum AA6061-T6-to-galvanized DP590 steel is studied using AlSi-5 welding wire as filler material. The influence of wire feeding speed on welding quality is one of the research emphases. Firstly, an orthogonal experiment is designed to investigate the impact of wire feeding speed, welding speed and arc length correction on the mechanical performance of the joints. In addition, the welding quality of weldments under optimized process parameters are examined by tensile test and metallographic test. Finally, the influence rule of joint shape, metal transition thickness and welding strength under different wire feeding speed is studied. The results show that wire feeding speed has the greatest influence on joint strength. When wire feeding speed goes up from 5.0 m/min to 6.2 m/min, the thickness of intermetallic transition layer increases. The optimal combination of process parameters is analyzed.
Copyright terms are indicated in the Republic of Lithuania Law on Copyright and Related Rights, Articles 4-37.
The copyright for articles in this journal are retained by the author(s), with first publication rights granted to the journal. By virtue of their appearance in this open access journal, articles are free to use with proper attribution in educational and other non-commercial settings.