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    冷拔钢管生产过错纠正方法解读

    2018-12-10 09:14:22 无锡盛发地坪科技有限公司 阅读

    冷拔钢管生产时出现错误在允许范围内,任何物品的生产不可能保障任一个产品质量完好,只要把错误率降到最低即可。纠正管材生产过程中的错误,提高生产质量,成为生产厂家必须控制的。 在冷拔钢管成型中,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。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。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。钢带边缘状况不佳是造成错边的另一重要原因。找出问题所在,在纠正上会方便很多。

    Errors in cold-drawn steel pipe production are within the allowable range. It is impossible to guarantee the quality of any product in production, as long as the error rate is minimized. Correcting the errors in pipe production and improving the quality of production have become a must for manufacturers to control. In cold-drawn steel tube forming, the sickle bending of steel strip will constantly change the forming angle, leading to the change of weld gap, resulting in slits, staggered edges and even lapped edges. The quality of steel pipe is seriously affected. Therefore, it is an effective way to reduce the wrong edge of steel strip sickle bending in the production process to observe the sickle bending after uncoiling, to control the vertical roll so that the disc shear can cut off part of the sickle bending and the continuous control and rectification of the forming angle. Because the shape and dimension accuracy of the non-trimmed steel strip head and tail are poor, it is easy to cause hard bending of the steel strip and cause staggered edges when butting. When the residual height of butt welding seam of steel strip head and tail is large, it is easy to cause large offset if improper treatment is taken during the process of forming. The poor edge condition of steel strip is another important reason for the wrong edge. Finding out what the problem is will be much easier to correct. 



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