期刊
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
卷 116, 期 -, 页码 1282-1291出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2017.09.130
关键词
High speed welding; External magnetic field; Temperature field; Molten metal flow; Visual measurement
资金
- National Natural Science Foundation of China [51275276]
The thermal condition and fluid flow in weld pool determine the formation of humping bead in high speed gas metal arc welding. An external magnetic field is utilized to control the fluid flow and heat transfer in weld pool to suppress the humping bead formation. The measurements of temperature field and molten metal flow on the weld pool surface are conducted under the conditions without and with the external magnetic field. When the external magnetic field is applied; the temperature distribution in the weld pool is more uniform. The backfilling of molten metal and fluid flow are improved, and the longitudinal velocity of backward molten metal flow is reduced. The external magnetic field not only adds a resistance but also decreases the driving force for the flow of the backward molten metal in weld pool so that the momentum of the backward molten metal flow is reduced and the humping bead is suppressed. (C) 2017 Elsevier Ltd. 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