摘要
螺旋焊管成型时的弯曲变形属于弹—塑性变形 ,在带钢弯曲变形的中性层两侧 ,存在着一定厚度的弹性变形层。弹性变形层所占比例大小决定螺旋焊管弹复量的大小。D/δ值与弹性变形层所占比例值有着对应关系 ,正确评估 D/δ值对螺旋焊管弹复量的作用 ,可以在调型中加以应用。
Bend distortion is elastic-plastic distortion in spirally welded pipe forming.There is elastic distortion layer with certain thickness in both sides of neutral layers in steel strip bend distortion decided the elasticity value of spirally welded pipe.For the corresponding relations exiting between the value of D/δ and the proportion of the elastic distortion layer,exactly valuation will be made to effect of D/δ on elasticity value of spirally welded pipe and it may be applied in pipe forming.
出处
《焊管》
2003年第3期53-54,62,共2页
Welded Pipe and Tube
