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对自动轧管机组的芯棒孔型进行了研究,试验表明,采用带椭圆段的自动轧管机芯棒和均整机芯棒,可以减小钢管壁厚不均,增大均整时的壁厚压下量。
The mandrel hole type of automatic pipe rolling unit has been studied. The test shows that the use of automatic pipe rolling mandrel and uniform mandrel with elliptical section can reduce the uneven wall thickness and increase the wall thickness Press down.