Joining of aluminum alloys to galvanized mild steel by the pulsed DE-GMAW with the alternation of droplet transfer. (January 2017)

• Record Type: Journal Article
• Authors: Huang, Jiankang; He, Xiaoying; Guo, Yanning; Zhang, Zhengpeng; Shi, Yu; Fan, Ding
• Is Part Of: Journal of manufacturing processes. Volume 25(2017)
• Page Start: 16
• Page End: 25
• Publication Date: 2017-01
• Subjects: Aluminum-steel melt-brazing -- Pulsed double electrode gas metal arc welding -- Alternation of droplet transfer -- Mechanical property; Production management -- Data processing -- Periodicals; Manufacturing processes -- Periodicals; Procestechnologie; Productietechniek; Production -- Gestion -- Informatique -- Périodiques; Fabrication -- Périodiques; Manufacturing processes; Production management -- Data processing; Periodicals; 670.5
• DOI: 10.1016/j.jmapro.2016.10.003
• Languages: English
• ISSNs: 1526-6125

Abstract

Abstract: In this study, the welding-brazing process of pulsed double electrode gas metal arc welding (pulsed DE-GMAW) provides a potential method to join dissimilar metals (i.e., joining of aluminum alloys to galvanized mild steel). In order to evaluate the stability of welding process, a mathematical model of the alternation of droplet transfer for the pulsed DE-GMAW is established based on the spring-mass-damper model. The droplet alternative transfer is a free flight with short circuiting transfer mode, which is analyzed and detected during the welding process with double pulsed current. Meanwhile, the pulsed DE-GMAW technology is found to be feasible to join the aluminum alloys to the galvanized mild steel. The variable weldability process of aluminum-galvanized steel could be obtained with a wire by optimizing welding parameters. Microstructures of the intermetallic reaction layer and bonding mechanism of optimized weld-brazed specimens with aluminum ER4043 and ER5356 wires are analyzed and conducted by SEM and tensile test.