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Key control link of quality in steel tube production process
Jun 14, 2017

Key control link of quality in steel tube production process


      When the width of the steel band is less than the allowable deviation, the extrusion pressure of the welded steel pipe is reduced, so that the welding seam of the steel pipe is welded

Not firmly, cracks or open tube; when the strip width is greater than the allowable deviation, the extrusion pressure pipe increases, appear pipefish, lap welding or burr welding defects such as weld in steel pipe. 


steel tube

      Therefore, the fluctuation of the width of the steel belt not only affects the accuracy of the outer diameter of the steel tube, but also seriously affects the surface quality of the steel pipe. For the same section of the wall thickness difference does not exceed the specified value of the steel tube wall thickness, which requires high degree of uniformity of the strip thickness fluctuation will be the same volume of strip thickness difference value is transferred to the finished steel tube wall thickness difference allowed, so that a large number of steel tube thickness exceeds the allowable deviation and rejection. 

      The fluctuation of thickness influences not only the thickness and accuracy of the finished steel tube, but also the instability of the welding pressure and the welding temperature due to the uneven thickness of the steel strip, which results in the unstable quality of the weld pipe.


steel tube

  

      In addition, because of the defects of interlayer, impurity and trachoma in steel, it is also an important factor affecting the quality of steel pipe. Therefore, before the steel strip welding, to check each roll of steel strip surface quality and geometry size, the quality of the steel strip does not meet the standard requirements, not to production, so as not to cause unnecessary losses.

  Suzhou Tianyuan Equipment Technology Co.,Ltd is specialized in researching and manufacturing Precision High Frequency Welded tube production line , roll forming production line , elevator guider production line and SS ARC tube production line etc.