4.7 Article

The spreading simulation of molten Al alloy on Q235 steel in the first cycle of cold metal transfer process

期刊

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2016.01.002

关键词

Cold metal transfer; Heat transfer; Wetting; Capillary

资金

  1. National Natural Science Foundation of China [51301083]
  2. Provincial Fund for Distinguished Young Scientists [1506RJDA087]
  3. Rose Willow Young Foundation of Lanzhou University of Technology [Q201407]
  4. Preresearch of National Basic Research Program of China [2014CB660810]

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The volume of fluid and the solidification-melting models were used for the study of the wetting of Q235 steel by molten Al alloy in the first cycle of cold metal transfer process. Together with the consideration of the welding temperature field and the solidification process, the effect of welding temperature field (corresponding to the different wire feed speeds) on solidification, final wettability, and wetting behavior were discussed, respectively. The results showed that the molten Al alloy primarily began to solidify at the triple line, which is consistent with the distribution of temperature field; partial solidified metal blocked the motion of triple line to a certain extent; good wettability of Q235 steel plate by molten Al alloy can be observed with the increase of wire feed speed, and the advance of triple line was controlled by capillary force. (C) 2016 Elsevier Ltd. All rights reserved.

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