roll mandrel

The article gives a description to the process parameters, roll and mandrel performance parameters, surface quality and dimensional accuracy of 57mm~ 76mm small-diameter pipes hot-rolled on two-roll tube mill or on three-roll tube mill.

介绍了用二辊或三辊轧机试轧φ57～76mm小直径热轧荒管的工艺参数、轧辊和芯棒的力能参数、荒管的表面质量及几何尺寸精度等。

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At present, the ring rolling technology roll one ring in one process, and the technology can't deal with stress focus on the sharp taper angle of mandrel roller.

目前锥形套圈辗扩技术只能一次成形一件，而且由于锥形套圈锥角使得芯辊应力集中严重。

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