螺旋焊管残余应力的计算

Calculation of Residual Stress of Spiral Welded Pipe

残余应力对螺旋焊管质量有显著影响。通过推导,得出了螺旋焊管残余应力与切口张开量的数学关系式,制管厂家通过采用控制切口张开量以达到控制焊管残余应力的作法是切实可行的,对焊管残余应力内控标准的制定有一定的参考价值。

The residual stress imposes considerable negative influence on quality of the spiral welded pipe. Based on relevant deduction, the mathematical relational expression between the spiral welded pipe residual stress and the cut opening amount is set up. It is concluded that it is practical for the pipe makers to control the said residual stress by means of controlling the cut opening amount. The paper is helpful to establishing company criteria governing spiral welded pipe residual stress.