Method for controlling pass-line deflection of finishing mill stand according to intermediate billet camber

A technology of camber bending and finishing mill, applied in the direction of profile control, rolling force/roll gap control, etc., can solve the problems affecting the stability of finishing rolling, achieve low synchronization and real-time performance, low cost, reduce The effect of finish rolling deviation

Active Publication Date: 2017-07-28
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for controlling the deviation of the finish rolling stand according to the camber of the intermediate billet. This method can solve the problem tha

Method used

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  • Method for controlling pass-line deflection of finishing mill stand according to intermediate billet camber
  • Method for controlling pass-line deflection of finishing mill stand according to intermediate billet camber
  • Method for controlling pass-line deflection of finishing mill stand according to intermediate billet camber

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Embodiment A1-A2

[0038] image 3 The control system used in the method of controlling the deviation of the finish rolling stand according to the camber of the intermediate billet according to the embodiment A1-A2 is illustrated, Figure 4 The flow of the method for controlling the deviation of the finish rolling stand according to the camber of the intermediate slab in the embodiments A1-A2 is illustrated.

[0039] Such as image 3 As shown, the control system used in the method of controlling the deviation of the finishing stand according to the camber of the intermediate slab in the embodiment A1-A2 includes a width meter 7 and an industrial control computer 8, and the industrial control computer 8 cooperates with the width meter 7 and the finishing stand The pressing control system of F1-F7 is realized.

[0040] Such as Figure 4 shown, combined with reference image 3 , the specific steps of the method for controlling the deviation of the finish rolling stand according to the camber of...

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Abstract

The invention discloses a method for controlling the pass-line deflection of a finishing mill stand according to the intermediate billet camber. The method comprises the following steps that (1) a control range is selected; (2) the camber C value is determined; (3) the single side roll gap adjustment amount delta Gap i of the i stand is obtained according to the following model as shown in the specification, the delta Gap i is the single side roll gap adjustment amount (mm) of the i stand, C represents the strip steel camber C value (mm), Km represents the rolling mill rigidity coefficient (KN/mm), Ks represents the plastic deformation coefficient (KN/mm), hi represents the outlet thickness (mm) of the i stand, h0 represents the intermediate billet thickness (mm), W represents the finished strip steel width (mm), and Ki represents the gain coefficient of the i stand and is dimensionless; and (4) the determined single side roll gap adjustment amount delta Gap i of the i stand is transmitted to a screwdown control system for execution. By adoption of the method provided by the invention, the influence of the intermediate billet camber on finish rolling pass-line deflection can be eliminated.

Description

technical field [0001] The invention relates to a method for controlling the deviation of a rolling mill stand, in particular to a method for controlling the deviation of a finish rolling stand. Background technique [0002] Hot-rolled strip steel is an important steel product, and hot rolling is one of the main methods of hot-rolled strip steel production. figure 1 A hot continuous rolling production line for hot strip steel is shown. Such as figure 1 As shown, the hot continuous rolling production line includes a heating furnace 1, a roughing mill 2, a finishing mill 3, a laminar cooling device 4 and a coiler 5, wherein the finishing mill 3 includes several finishing stands, and in the hot rolling production line, the finishing Rolling mill 3 includes finishing stands F1-F7. The production process of the hot continuous rolling production line is: first, the billet is heated by the slab in the heating furnace 1, then dephosphorized by high-pressure water, and then rough ...

Claims

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Application Information

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IPC IPC(8): B21B37/30B21B37/58
CPCB21B37/30B21B37/58
Inventor 刘运华荣鸿伟骆磊郁华军
Owner BAOSHAN IRON & STEEL CO LTD
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