Packaging steel strip coiler control profile

Packaging steel strip coiler control speed control during winding reel, reel speed control device to output roller, pinch roll, the roll and roll speed setting and control. Speed setting and control on the basis of this equipment is at the end of the finishing mill speed. In order to make the strip head run on output roller before there is a certain tension, output roller set faster than the speed of 10% at the end of the finishing mill stand - 20% of the rate in advance; Pinch roll should absorb the unwinding of the strip, also should be 10% 15% of the rate in advance; Drum in order to convey the coiling torque to strip coil attached to the state, at the same time, should be considered when coiling neck defects, so lead rate shall be 10% speed of thin strip steel drum, thick strip lead rate should be within 35%. Help roll have a bending effect on strip head when coiling, and transferred to the strip steel, should be bigger than drum lead rate, about 15% 40%. After drum roll tight head to switch to the coiling tension. Open to roll, roll into current control. In addition, with tail out of the finishing mill until the end of coiling, to get good shape, the drum into speed control, and pinch roll into current control, exert a certain tension on strip tail. Roll torque control when strip head after tightening around on the drum, coiling was conducted under a certain tension. To maintain constant tension winding, with the increase of roll diameter, roll the output torque should also increase gradually. In order to achieve the control purpose, usually adopts two methods: first, keep the armature current is a constant value, and the coil diameter proportionally increase with the increasing of excitation current; Second, make the armature current Ia and D is proportional to the change. The second approach is more, the advantages of widely used.