Steel ingot cone elimination rolling control method for heavy plate mill

A control method, technology of steel ingots, applied in the direction of rolling mill control device, metal rolling, metal rolling, etc.

Active Publication Date: 2012-09-26
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the existing manual deconing treatment, thereby providing a new control method for deconing rolling of steel ingots

Method used

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  • Steel ingot cone elimination rolling control method for heavy plate mill
  • Steel ingot cone elimination rolling control method for heavy plate mill
  • Steel ingot cone elimination rolling control method for heavy plate mill

Examples

Experimental program
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Embodiment

[0101] The following specific examples are used to illustrate the effect of using the present invention to perform anti-cone rolling on steel ingots. In this embodiment, the size of the steel ingot is specifically: the thickness of the large end is 890mm, the thickness of the small end is 750mm, the width is 2255mm, and the length is 2430mm. Roll radius: 550mm. The rolling force calculation adopts the Sims formula, and the process parameters of each pass are the initial pass temperature of 1147°C, and then reduce it by 2°C for each pass, the speed is constant at 0.2m / s, and the rolling arm is 0.1m, the maximum allowable The rolling torque is 3200KNm. Set the number of points M=3, and the relative positions of each point are x1=0, x2=0.5, x3=1.0.

[0102] During the rolling process, the position of the rolling mill adopts the hydraulic automatic pressing position control mode, and the rolling mill is controlled to execute the multi-point setting value of the roll gap in the a...

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Abstract

The invention discloses a steel ingot cone elimination rolling control method for a heavy plate mill, which comprises the following steps of a. using a heavy plate mill for cone elimination rolling to receive supplied material data of a steel ingot to be rolled, wherein the supplied material data comprise the size and tapping temperature of the steel ingot; b. moving the steel ingot in front of the heavy plate mill for rolling at the pass; c. calculating the maximum rolling reduction of the steel ingot in the pass; d. calculating corresponding roller gap width of multiple preset points in the pass; e. rolling the steel ingot at the pass according to the roller gap width calculated in the step d; and f. judging whether the thickness of the steel ingot is even or not after rolling at the pass is completed. According to the steel ingot cone elimination rolling control method, the defect of existing cone elimination by manpower can be overcome, and cone elimination rolling can be carried out on the steel ingot automatically.

Description

technical field [0001] The invention relates to the steel ingot rolling control of a thick plate rolling mill, more specifically, a control method for steel ingot decone rolling of a thick plate rolling mill. Background technique [0002] The steel ingot as one of the incoming materials for thick plate rolling is usually not a regular rectangle, but as figure 1 As shown, the length of the steel ingot is L, and there are a large end thickness T1 and a small end thickness T2 in the thickness direction. During rolling, the so-called anti-cone rolling must be carried out first, that is, through several passes of rolling, the steel ingot is rolled Made of ordinary incoming materials with uniform thickness. [0003] In thick plate manufacturers at home and abroad, this kind of anti-cone rolling depends on the operator's experience. Specifically, the operator understands the ingot shape and the furnace temperature process through the rolling process sheet, and according to experi...

Claims

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Application Information

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IPC IPC(8): B21B37/16
Inventor 王全胜苗雨川顾豪杰
Owner BAOSHAN IRON & STEEL CO LTD
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