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Analysis of large diameter spiral pipe wrong side causes
publishers£º¹ÜÀíÔ± Release time£º2012-5-15 11:36:55 read£º5468times
 

The wrong side often occur when large-diameter spiral steel pipe production, which its impact are many factors. in practical production, often leaving the steel pipe from dry wrong side of the ultra-poor downgrade. Analysis of large diameter spiral pipe the wrong side of the causes and preventive measures necessary.

1, the camber of the strip caused by the steel tube wrong side of the main factors. The forming of the spiral welded pipe, strip camber will continue to change the forming angle, resulting in changes in the weld gap, resulting in open seam, even taking the wrong side of side. Seriously affect the quality of the steel pipe, so the observed strip volume begins with camber, by controlling the vertical roll disc to cut the wrong side of the removal of part of the camber, as well as, in continuous control and correcting of the forming angle in the production process to reduce strip camber produce an effective way.

2, due to the shape and size of less accuracy without trimming the strip head and tail docking could easily lead to strip hard bend caused by the wrong side.

3, the strip head and tail docking welding the weld metal when overmolding if not handled properly, it will be likely to cause the larger the wrong side.

4, the poor condition of strip edge is another important reason causing the wrong side.

 

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