Industrial Three-Roller Rolling Mill

The direction of rotation of the rolls remains unchanged, between the lower and middle rolls in one direction through, the return is between the middle and upper rolls through. In order to lift the rolled parts and feed it into the rolls, need to set up a lifting table. Three-roller Lauter type mill with AC induction motor, by driving the flywheel reducer to drive. So it can reduce the capacity of the auxiliary motor. Its roll diameter is small, can reduce the rolling pressure, the roll is supported by the upper and lower rolls, so the rigidity increases. In addition, the middle roll is easy to replace, Hume convenient, easy to achieve control roll roll type, so that the product thickness accuracy than the two-roller type has improved.

Three High Rolling Mill production operation process

1.Preparation

1.1 Check the thickness gauge ray source is open.

1.2 Start the cooling tower water pump, circulation pump, high pressure pump (one with a backup), low pressure pump (one with a backup), back pressure pump, thin oil pump (one with a backup), rolling oil pump, oil mist fan, turn on the lighting.

1.3 Start the main machine and winder.

2.Wearing tape

The steel coil is lifted to the entrance uncoiler, the reel is lifted to the export winder → draw fork fixed reel → clutch closed → pressure roller, squeeze oil pressure plate rise → winding forward pointing → winding pointing → send the steel belt to the export winder → winder linkage → the steel belt is wrapped 5 circles on the export winder → pressure roller down.

3.Rolling

Load the upper and lower working rolls→Clamp the upper and lower working rolls→Close the front swing door→Build static tension→Close the roll slit→Press down the roll slit on the operating table or input the roll slit value on the man-machine interface→Rolling force or roll slit reach the set value→Thickness gauge input→Thickness gauge open→Tension increase to the set value→Select the rolling direction→"Work mode" on the man-machine interface "Select "position control" on the man-machine interface →Mill speed up to the set speed →Adjust the pressure on the drive side and operation side (to prevent runout) →Adjust the roll slit (to ensure the target thickness of the pass) →Roll to the end of the strip about 12 turns mill deceleration →Tail left about 5 turns to reduce the speed to stop →Select the rolling direction →Set the rolling force, tension and roll diameter Tension and roll diameter → squeeze oil roller down → squeeze oil platen down → mill acceleration to the set speed, adjust the pressure of the drive side and operation side → adjust the roll gap → roll to the end of the strip about 12 laps mill deceleration → left about 5 laps of the tail speed down to stop → reciprocal rolling several times to the target thickness.

4.Unwind

Stop the mill → lower the tension to static tension → open the roll slit → withdraw the static tension → close the rolling oil pump → squeeze oil roller up → squeeze oil platen up → remove the unrolled part of the tail → pressure roller up → winder linkage → pull the tail to the outlet → axial clamping open → clutch open → lift away the coil.