作者: Lars-Erik Lindgren , Mikael Jonsson , Lennart Karlsson
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摘要: In butt joint welding of plates, the change in root opening front arc is great importance. order to automate process, one must know how affected by variables and plate configuration. The most important are speed energy per unit length weld. configuration dependent on material their size, restraints tack procedure. this paper, influence procedure was inves tigated. This during first part depends which welds made. It also starting position arc. These effects were studied seven theoretical analyses —three cases where procedures differed four tem perature fields at beginning differed. two cases, results compared with experiments. anal yses, finite element method used. found that strongly