Slab sickle bending control system and method used for roughing mill

A technology of control system and sickle bending, applied in the direction of rolling force/roll gap control, etc., can solve problems such as deviation, insufficient adjustment, excessive adjustment, etc.

Inactive Publication Date: 2016-01-13
BEIJING SHOUGANG AUTOMATION INFORMATION TECH
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  • Description
  • Claims
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Problems solved by technology

However, the actual effect often deviates, and ther...

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  • Slab sickle bending control system and method used for roughing mill
  • Slab sickle bending control system and method used for roughing mill
  • Slab sickle bending control system and method used for roughing mill

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Embodiment Construction

[0048] An embodiment of the present invention provides a slab camber control system for a roughing mill. It contains the following content:

[0049] See attached figure 1 , the slab width detection module belongs to the process control system (L2), this module collects the center line offset data detected by the width gauge, calculates the bending type and degree of bending of the slab camber, and sends it to the computer control module; In order to measure the degree of camber bending, a parabola fitting is performed on the offset data of the export slab center line, and the fitted curve is as follows:

[0050] y=ax 2 +bx+c[l min , l max ]

[0051] In the formula, y—indicates the offset of the slab center point in the width direction, mm; x—indicates the value of the slab center point in the length direction, mm; l min , l max ——indicates the value range of the center point of the slab in the length direction, mm; a, b, c——indicates the coefficients of the quadratic cu...

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Abstract

The invention discloses a slab sickle bending control system and a slag sickle bending control method used for a roughing mill, and belongs to the field of mechanical automatic control. The control system comprises a slab width detecting module, two side roller beam leveling modules, a computer control module and a storage unit. The slag width detecting module is used for processing centre line offset data detected by a width detector and sending the processed centre line offset data to the computer control module; the computer control module is used for calculating a leveling value of each gate by collecting a set value of slag and practically measured value data, and sending the leveling value to the two side roller beam leveling modules; and the two side roller beam leveling modules are used for regulating two side roller beams of the roughing mill according to the leveling value, and controlling the slab sickle bending. The control system is applicable on the roughing mill, capable of calculating the leveling value of each gate more accurately, and capable of effectively controlling slag sickle bending and guaranteeing stability of finishing rolling unit production, thereby relieving steel scrap caused by off-tracking, shifting and the like, increasing yield and bringing direct economic benefits for enterprises.

Description

technical field [0001] The invention belongs to the field of hot-rolled slab shape automation control, and in particular relates to a slab camber control system for a roughing mill, so as to improve the slab camber problem and meet the slab camber control requirements. Background technique [0002] Cambering is a phenomenon in which a slab bends laterally in the rolling direction. Usually, the camber of the slab is often serious at the 3-5m of the head or tail of the slab. The reason for the camber phenomenon can be attributed to two parts: rolling piece factors (wedge shape of incoming material, uneven temperature on both sides, deviation) and rolling mill factors (difference in stiffness on both sides, excessive clearance between archway and bearing housing). The camber phenomenon of the slab is likely to cause wedge-shaped strip steel at the exit of the finish rolling, and even cause accidents such as tail flicking and stacking of steel in production, which seriously aff...

Claims

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Application Information

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IPC IPC(8): B21B37/58
CPCB21B37/58
Inventor 王海玉高雷杨荃董立杰王晓晨李彬江潇龚彩军
Owner BEIJING SHOUGANG AUTOMATION INFORMATION TECH
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