Pressure control method for coiling machine side guide plate

Abstract

The invention discloses a pressure control method for a coiling machine side guide plate and belongs to the technical field of coiling machines. According to the selection of the pressure control method for the coiling machine side guide plate, pressure control is adopted in one side, and position control is adopted in the other side; after strip steel enters the coiling side guide plate, the side guide plate pressure control side executes pressure control, and real-time judgment is carried out on actual measurement of actual measurement pressure P and setting of a set pressure value P of the side guide plate pressure control side; judgment is carried out according to the position motion situation of the side guide plate pressure control side; finally, judgment is carried out according to the size of the actual measurement of the actual measurement pressure P and the size of setting of the set pressure value P of the side guide plate pressure control side, and the size of the actual measurement of the opening degree GAP and the size of setting of the set opening degree GAP of the two sides of the side guide plate, and the situation of the tail of the strip steel entering the side guide plate. According to the pressure control method for the coiling machine side guide plate, the problem of the steel roll tower shape caused by the fact that the side guide plate pushes the strip steel in a deviating mode can be prevented, the problem of the control disorder caused by abnormal pressure control under the circumstance of the pressure sensor failure is avoided, and layer staggering and edge cracking of steel rolls are effectively avoided.

Description

technical field [0001] The invention relates to the technical field of coilers, in particular to a method for controlling the pressure of a side guide plate of a coiler. Background technique [0002] With the increasingly intensified competition in the hot-rolled steel coil market, the coil quality has become an important control indicator in the production process. The quality of the control of the side guide plate directly affects the coil shape of the steel coil. If the control is not good, it will lead to quality defects such as coil misalignment and edge cutting. [0003] At present, there are usually three control methods for the side guide plate of the coiler: 1. The side guide plate is always in the position control mode, regardless of the extrusion force on the side guide plate, and the position is always kept unchanged, and the strip is prone to edge cutting; 2. , the side guide plate is always in the pressure control mode, regardless of the actual position of the...

AI Technical Summary

Problems solved by technology

The quality of the control of the side guide directly affects the coil shape of the steel coil. If the control is not good, it will lead to quality defects such as coil misalignment and edge cutting.

[0003] At present, there are usually three control methods for the side guide plate of the coiler: 1. The side guide plate is always in the position control mode, regardless of the extrusion force on the side guide plate, and the position is always kept unchanged, and the strip is prone to edge cutting; 2. , the side guide plate is always in the pressure control mode, regardless of the actual position of the side guide plate opening, when the strip steel camber occurs, due to the pressure control, the steel coil is prone to misalignment; 3. One side of the side guide plate Position control, pressure control on one side, but the pressure control side still stays in pressure control, regardless of the abnormal pressure situation, such as sensor failure, although the position of the other side remains unchanged, the side guide plate will always be closed under the pressure control side Or open the side guide plate, the purpose is to maintain the consistency of the pressure control side pressure feedback and setting, which will easily cause the accident that the side guide plate pushes the strip or even pinches the strip to pile up steel

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