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Downstream roller replacing method achieving online roller replacing of ESP finish rolling unit

A technology of finishing rolling mills and rolling rolls, applied in the direction of metal rolling stands, metal rolling mill stands, metal rolling, etc., can solve the problems affecting the production efficiency of continuous casting and rolling of thin slabs, etc.

Active Publication Date: 2018-08-17
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the ESP production line is continuous casting and rolling, during the roll change of the downstream finishing mill, the upstream continuous casting cannot continue, and the production line has to be stopped, which seriously affects the production efficiency of thin slab continuous casting and rolling

Method used

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  • Downstream roller replacing method achieving online roller replacing of ESP finish rolling unit
  • Downstream roller replacing method achieving online roller replacing of ESP finish rolling unit
  • Downstream roller replacing method achieving online roller replacing of ESP finish rolling unit

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Embodiment Construction

[0063] Exemplary embodiments, features, and aspects of the present invention will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0064] There are a total of 30 possible combinations in the roll change of the rolling mill in the 5+1 mode, and the countercurrent roll change method can solve 15 of them, that is, the downstream rack replaces the upstream rack, and the other 15, that is, the standby rack is located When the roll frame is upstream, that is, the upstream frame replaces the downstream frame, it cannot be solved by the countercurrent method, so it needs to be solved by the downstream roll change method.

[0065] refer to Figure 1~4 , a kind of down-stream roll change method that realizes the ESP finishin...

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Abstract

The invention provides a downstream roller replacing method achieving online roller replacing of an ESP finish rolling unit, and the method is used for an online roller replacing device, provided withsix racks, of an ESP finish rolling unit. During normal rolling production, any five racks are put into operation, and one rack is an order-awaiting rack. According to the method, a downstream rollerreplacing strategy is adopted, the method includes the following steps that S1, collecting process, plate strip and rolling mill parameters are collected and input; S2, a roller of the order-awaitingrack Fj is downwards pressed, and the speed adjusting segment is performed; S3, the roller seam and roller speed adjusting segment of a transition rack Fj+1 and downstream racks is performed; and S4,a roller of a roller replacing rack Fi is lifted and the roller speed adjusting segment is performed. According to the controlled roller replacing method, the roller replacing efficiency and the stability of the roller replacing process can be improved, the product thickness control precision can be improved easily, and the industrial application precision requirement can be met.

Description

technical field [0001] The invention relates to the field of metallurgical continuous casting and rolling, in particular to a downstream roll changing method for realizing online roll changing of an ESP finishing rolling mill. Background technique [0002] Hot-rolled thin strip steel can be used as finished products or raw materials for cold rolling, and its demand continues to grow worldwide. However, the traditional hot-rolled strip steel process has serious environmental pollution and huge energy consumption, which is not conducive to the construction of an energy-saving and environmentally friendly society. At present, the research hotspot at home and abroad is to develop thin slab continuous casting and rolling process, "replacing heat with cold" to produce thin-gauge slab products, so as to reduce energy consumption and environmental pollution. Endless Strip Production (ESP) is a cutting-edge technology in the field of short-process hot-rolled strip at home and abroad....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B31/12
CPCB21B31/12
Inventor 彭艳张敏杨彦博孙建亮刘才溢
Owner YANSHAN UNIV
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