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Reference source from the internet.
螺旋焊管在生产时,错边时有发生,其影响因素很多。在生产实践中,往往由干错边超差而使钢管降级。因此分析螺旋焊管错边产生的原因及其预防措施是很有必要的。


   1、钢带的镰刀弯是造成钢管错边的最主要因素。在螺旋焊管成型中,钢带的镰刀弯会不断地改变成型角,导致焊缝间隙变化,从而产生开缝,错边甚至搭边。严 重影响了钢管的质量,故观测钢带卷开卷后的镰刀弯情况,通过控制立辊使圆盘剪能切除部分镰刀弯以及成型角的连续控制和纠偏是在生产过程中减少钢带镰刀弯产 生错边的有效办法。


  2、由于不切边钢带头尾的形状和尺寸精度较差,对接时易造成钢带硬弯而引起错边。


  3、钢带头尾对接焊接焊缝余高较大时,在过成型时若处理不当,容易造成较大的错边。


  4、钢带边缘状况不佳是造成错边的另一重要原因。
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