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Wiper shoe

Wiper shoe

 

Overview on Mandrel

Mandrel plays an important role in pipe bending industries to maintain the good quality of bend as the maximum bending is usually occur without mandrel but in some cases when we are not able to get the bend in proper oval shape and facing the problem of wrinkles at the bend then the mandrel helps in solving these kind of troubles. The mandrel mainly uses in those cases where the wall thickness of tube or pipe is very thin due to which at the time of bending the inner part of the bend is not sufficient to support itself at bend due to which oval bend is not able to achieve and wrinkles also appear. The use of mandrel depends upon some calculations due to which we can tell that the mandrel will be needed or not.

  • It is used to prevent inner wrinkle of the pipe while bending.
  • A compound wiper shoe can also be used to avoid wrinkles for cost effectiveness.
  • For the less value of the wall factor [Ratio of tube / (ratio of CLR / Tube OD) a wiper shoe is used.