...薄；中间辊移动；工作辊弯曲；中间辊弯曲 [gap=730]Keywords edge-drop; middle roll shift; work roll bend; middle roll bend ...
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According to double radius method and edge bend method, this paper introduces the design theory of roll pass with opposite direction bend in middle part for cold forming of round pipe.
本文在双半径法和边缘弯曲法的基础上，介绍了一种冷弯圆管的中部反向弯曲孔型设计理论。
And also it has a bend work roll and a bend middle-roll.
并采用了工作辊弯曲和中间辊弯曲。
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