Device and method for controlling camber of board blank of sizing press (SP)

Abstract

The invention discloses a device and method for controlling the camber of a board blank of a sizing press (SP). The device comprises a guide plate assembly, a hydraulic system, modules, module opening adjusting mechanisms, a synchronous speed control system and a pressure sensor, wherein, the pressure sensor is arranged on an oil circuit of the hydraulic system and is used for measuring a contactpressure value between the board blank and a guide plate. The method comprises the following steps: the pressure sensor is arranged on the oil circuit of a guide plate oil cylinder and is connected with a central processing unit (CPU) of the synchronous speed control system, feeds back a received pressure value measured by a force sensor to the synchronous speed control system, and calculates thecompensation quantity of speed of synchronous motors. In the method, by means of the measured contact pressure value between band steel and the guide plate in combination with a formula shown in the specification: VP=EPSP*DEP / EPS, a VP value is calculated so as to compensate synchronous motors at a deviation side, which realizes control of deviation of the board blank during the side pressure process and improves product quality and rolling stability, thus meeting production requirements for different products. Therefore, the device and the method have good application and popularization prospects.

Description

technical field [0001] The invention belongs to the field of strip shape control in the hot rolling process, and in particular relates to a control device and a control method for the camber of a slab of a large side-pressing fixed-width machine. Background technique [0002] After the heated slab passes through the descaling device, it enters the sizing press (Sizing Press, SP for short) such as figure 1 As shown, start to carry out side pressing and width setting on the slab. When the slab passes through the SP, two modules 4 with the center line of the rolling line as the axis of symmetry are extruded from the side of the slab 5 . like figure 2 As shown, the module 4 moves on an approximate elliptical trajectory driven by the transmission mechanism, and its trajectory can be regarded as a synthesis of movements in the X-axis direction and the Y-axis direction. The X-axis direction is the side pressing movement of the slab, and the function of the Y-axis direction is t...

AI Technical Summary

Problems solved by technology

[0005] In the actual process of side pressing the slab of the large side pressing and fixed width machine, due to the existence of problems such as temperature inconsistency on both sides of the slab, poor centering of the slab, and deviation of equipment function accuracy, etc., deviations often occur during the side pressing process of the slab , the poor plate shape directly affects the smoothness and stability of the subsequent rolling process

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