Numerical study on the temperature field of underwater flux-cored wire arc cutting process

作者：Wang, Jianxin^*; Shi, Jiahui; Wang, Jiayou; Li, Wenhang; Liu, Chuan; Xu, Guoxiang; Maksimov, Sergii Yuri; Zhu, Qing

来源：International Journal of Advanced Manufacturing Technology, 2017, 91(5-8): 2777-2786.

DOI：10.1007/s00170-016-9913-5

• Underwater wet cutting
• Flux-cored wire
• Finite element method
• Temperature field
• Heat affected zone

The fast development of ocean engineering makes the underwater cutting more and more important. In present study, a special underwater wet cutting method, namely the underwater flux-cored wire arc cutting (FCAC) was introduced. The underwater cutting experiment was conducted using flux-cored wire cutting method, and experimental as well as numerical analysis was carried out to investigate the temperature field during underwater FCAC process. According to the mechanism of the underwater FCAC, double ellipsoid heat source model considering arc heat as well as chemical heat was introduced, and the boundary condition of pool boiling heat transfer was selected. The calculated thermal cycles during underwater FCAC process match well with those acquired by the experiment, which proves the model and boundary condition in this study to be applicable for underwater FCAC. It is found that the calculated t(8/5) value is shorter than 0.5 s, which is much shorter than the one of air-arc cutting process and the one of underwater welding process. In addition, the heat affected zone (HAZ) near the cut cavity is determined, which is expected to facilitate the further research on the cutting mechanism, as well as the optimization of cutting parameters.

• 出版日期2017-7
• 单位南京航空航天大学; 江苏科技大学