Simultaneous proceeding method of online countercurrent roller changing and dynamic procedure changing for ESP finishing mill group

A technology of finishing rolling mills and changing procedures, which is applied in the direction of rolling mill control devices, metal rolling, metal rolling, etc., and can solve problems such as steel loss and resource waste

Active Publication Date: 2019-04-30
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, every time the ESP finishing mill changes the schedule, a thickening zone of 5 meters or even longer will be generated, resulting in steel loss and waste of resources
Although the online roll changing process ...

Method used

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  • Simultaneous proceeding method of online countercurrent roller changing and dynamic procedure changing for ESP finishing mill group
  • Simultaneous proceeding method of online countercurrent roller changing and dynamic procedure changing for ESP finishing mill group
  • Simultaneous proceeding method of online countercurrent roller changing and dynamic procedure changing for ESP finishing mill group

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Embodiment Construction

[0111] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. In the present invention, countercurrent on-line roll change means that the standby frame is behind the roll change frame, that is, the standby frame F j Replacement roll change stand F i , it must be j>i.

[0112] Take Rack F 3 As a roll changing rack, take rack F 5 As an example of a stand-by stand, the method of online roll change and dynamic program change is described simultaneously. The specification changes and schedule are shown in Table 1.

[0113] Table 1 Schedule

[0114]

[0115] As shown in Table 1, the stand-by rack F 5 Replacement roll change stand F 3 For example, at the same time, the specification of the rolling mill is changed from 0.9mm to 1mm, and the rolling procedure is switched from regulation one to regulation two. in rack F 5 Replace rack F 3 The process of dynamic change of rules is also realized.

[0116] refer t...

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Abstract

The invention provides a simultaneous proceeding method of online countercurrent roller changing and dynamic procedure changing for an ESP finishing mill group. Racks over roller changing racks are adjusted according to input rolling technology and rolling mill parameters, the roller changing racks are raised and adjusted when thickened points reach the roller changing racks, racks below the roller changing racks are adjusted when a roller changing rack Fi is withdrawn from rolling, a standby rack roller is pressed down and adjusted when the thickened points reach a standby rack, and the racksbelow the standby rack are adjusted when a roller changing rack Fj is withdrawn from the rolling, the simultaneous proceeding of non-stop online roller changing and rolling procedure changing is realized. According to the simultaneous proceeding method, rotational speed and roller gap of each stage of roller changing are adjusted, product procedure is changed, the entering process of the standbyrack is achieved online under the premise that stable rolling of a rolling mill is ensured, non-stop online roller changing and rolling procedure changing are achieved, and continuity of an ESP production line is ensured.

Description

technical field [0001] The invention relates to the field of metallurgical continuous casting and rolling, in particular to a method for performing countercurrent on-line roll changing and dynamic program change in an ESP finishing rolling mill at the same time. Background technique [0002] Endless Strip Production (ESP) is a cutting-edge technology in the field of short-process hot-rolled strip at home and abroad. It can make full use of the heat energy of molten steel and produce products that can replace cold-rolled strips on an efficient and compact production line. The high-quality thin-gauge hot-rolled steel strip of the product can save energy by 40% compared with the traditional hot-rolled production line, which can greatly reduce production costs, save energy and reduce emissions, thereby reducing energy consumption and environmental pollution. [0003] However, since the products of the ESP production line are mainly thin-gauge plate and strip products, the roll w...

Claims

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Application Information

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IPC IPC(8): B21B1/46B21B37/20B21B37/48
CPCB21B1/46B21B37/20B21B37/48
Inventor 彭艳杨彦博张敏孙建亮
Owner YANSHAN UNIV
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