This paper, connected with practical production of ERW steel pipe, discussed the effect mechanism of the bond width, HAZ width and stream line angle caused by heat input, upsetting force and welding speed during the welding of ERW steel pipe.
本文结合生产实际论述了ERW焊接时输入热量、挤压力、焊接速度对熔合线宽度热影响区宽度、流线上升角的影响机理。
In 311 Zu Ti, a southern gentry-official, once led an expeditionary force to the north and regained the Yellow River valley for a short time. However, Zu Ti died from too much upsetting for being not trusted by the court and left the cause of recovering the north unfinished.
公元311年,大将祖逖出兵收复河北,但后因受到朝廷的排斥忧郁而死,最终未能完成统一大业。
Compare and Analyse of Unit Deforming Force and Boundary Conditions in Model Element of Cylinder Upsetting
圆柱体镦粗模型单元单位变形力及边界条件的比较分析
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