About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Towards a Future of Sustainable Production and Processing of Metals and Alloys
|
Presentation Title |
C-32: Development of Stable Pulse MIG Welding Technology for Automotive Ultra-high Strength Steel |
Author(s) |
Kyohei Konishi, Koichi Taniguchi, Chikaumi Sawanishi, Satoshi Igi |
On-Site Speaker (Planned) |
Kyohei Konishi |
Abstract Scope |
Suppression of weld slag formation is strongly demanded to improve corrosion resistance of automotive chassis parts. Although MIG (Metal Inert Gas) welding is one of the candidate process, unstable arc phenomena of this process induce weld bead shape defects, and therefore it has not been actually applied. This study aims to develop a highly stable MIG welding process for automotive ultra-high strength steel which offers sound bead shape with slag-less. Detailed analysis to clarify the mechanism of destabilization revealed that a proper welded joint can be obtained by realization of regular metal transfer. On the base of these findings, a new pulse current pattern was proposed. As a result, the stable pulse MIG welding offered sound weld bead shape and remarkable slag-less simultaneously. |
Proceedings Inclusion? |
Planned: |
Keywords |
Joining, |