期刊
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
卷 213, 期 12, 页码 2278-2291出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2013.06.017
关键词
Submerged arc welding; Computational fluid dynamics; Numerical simulation; Direct current; Alternating current; Molten slag
资金
- Brain Korea 21 Project
- Korean Ministry of Knowledge Economy [2012-10040108]
- Mid-career 363 Researcher Program through NRF [2013-015605]
- National Research Foundation of Korea [2013R1A2A1A01015605] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The effect of torch angle and current polarities on the convection heat transfer in single wire submerged arc welding is analyzed. To develop arc models such as arc heat flux, arc pressure and electromagnetic force, this study adopts the Abel inversion method with CCD camera images for direct and alternating current polarities. The heat transfer by molten slag from the flux consumption is considered as an additional boundary heat source in the numerical simulation. The variation of arc forces, the direction of droplet flight with polarity and the torch angle significantly affect the molten pool flow and the resultant weld beads. The simulated weld pool profiles are validated with corresponding experimental results and found to be in good agreement. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据