微弹复螺旋焊管稳定成型的控制方法

对微弹复螺旋焊管成型不稳定的具体原因进行了分析，采取了在钢管输出的螺旋方向适当增加输出阻力，在递送力的作用下，利用这种阻力使成型器内的管坯向外扩张，将较小的管坯持续扩张至与外定径辊接触，实现管坯定位，从而达到稳定成型的目的。

Controlling Method of Tiny Spring-back Spiral Welded Pipe Forming

This article analyzed reason for unstable forming to tiny spring-back spiral welded pipe,enhance output resistance in deferent direction of steel pipe,utilize resistance to make pipe blank in forming machine expand,the smaller pipe blank will expand to touch with external settle path roll,and the tube billet will be settled,so arrived stable forming.