Ten-roller cold straightening machine (Taiyuan heavy industry co.,ltd)

Equipment parameters:

  Work roll pitch:                         4×900mm

  Work rolls:                            10rolls

  Work roll diameter:                      φ380/480mm

  Working roll installation angle:              33°

  Work roll angle adjustment range:          29°～37°

  Work rollmaterial:                       High chromium cast iron

  Work roll opening:                        0～250mm

  Maximumstraightening force of single roller:  1300KN

  Straighteningspeed:                      0.5～2m/s

Pipe parameters:

  Outsidediameter: Φ48.3 mm～Φ180mm（Pipe end thickening194.5mm）；

  Steel tubewall thickness:    3.18mm～25mm；

  Tube length:    6～12.5m；

  Maximum bending after straightening:    Overall length   ≤3mm     

                                     Tubeend   1/1000mm

                                     Ellipticity ≤0.4%D

  Straightening temperature of steel pipe:  ≤150℃

Straightening requirement:

  Surfacequality after straightening: no dent and damage on the surface of the steelpipe (no new defects after straightening).

Straightening adjustment:

Straightening machinestraightening and straightening angle adjustment can refer to the followingtable: