Control method of hot rolling width of wedge-shaped slab

A wedge-shaped slab and width control technology, which is applied in the direction of metal rolling stand, metal rolling mill stand, etc., can solve the problems that the width cannot be controlled automatically, and achieve the effect of widening the scope of use, improving product quality, and widely promoting the prospect
CN103506403BActive Publication Date: 2015-04-01BAOSHAN IRON & STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BAOSHAN IRON & STEEL CO LTD
Publication Date
2015-04-01

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Abstract

The invention discloses a control method of a hot rolling width of a wedge-shaped slab. The control method is used in hot rolling of rough mills and used for controlling the hot rolling width of the wedge-shaped slab. The control method includes the following steps that firstly, whether an incoming slab is a wedge-shaped slab or not is judged according to the width difference of the head and the tail of the incoming slab which is to enter a rough mill to undergo rough rolling processing; secondly, when the incoming slab is determined to be the wedge-shaped slab, the type of the wedge-shaped slab is determined according to the width difference of the head and the tail; thirdly, width control is performed on wedge-shaped slabs in multiple racks in the rough mill which the wedge-shaped slab enters according to the wedge-shaped slab type which is determined in the second step. The control method of the hot rolling width of the wedge-shaped slab automatically controls widths of the wedge-shaped slabs which have the abnormal widths in the full length direction in the rough rolling process of a hot rolling mill.
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Description

technical field

[0001] The invention relates to hot rolling control, more specifically, a method for controlling the hot rolling width of a wedge-shaped slab that controls the width of the wedge-shaped slab during hot rolling. Background technique

[0002] Such as figure 1 As shown, the wedge-shaped slab 10 is a transitional slab produced when the width of the crystallizer changes during the continuous casting process, the width of the large end is W1, and the width of the small end is W2. Relying on the existing hot rolling automation technology and control model, it is impossible to complete the rolling of this wedge-shaped slab. For example, the short-stroke control scheme and equipment commonly used in head and tail shape control can only control the head of the wedge-shaped slab. and the width of the tail are controlled, but the width of the middle part of the slab still cannot meet the predetermined requirements (the length of the head and tail of the short-stroke con...

Claims

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