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利用连续速度场分析了圆管空拔过程,建立了空拔壁厚变化量计算式。经验证,该式计算的空拔壁厚变化量与实际值基本一致,可用于工程计算。
Using the continuous velocity field to analyze the pipe drawing process, the calculation formula of wall thickness variation was established. It is verified that the calculated wall thickness variation of the drawing is basically the same with the actual value and can be used for engineering calculation.