Method for shortening interval rolling time of steel plates and steel coils

A technology for rolling intervals and steel coils, which is applied in the direction of metal rolling, metal rolling, rolling mill control devices, etc., can solve the problems of production rhythm and output impact, and large interval time, so as to shorten the rolling interval time and improve production efficiency effect

Pending Publication Date: 2020-09-08
NANJING IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the steel plate and the steel coil are rolled at cross intervals, because of the above reasons, the rolling interval between the blocks is still very large. The total time is 630 minutes, which has a great impact on the production rhythm and output

Method used

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Embodiment Construction

[0015] A method for shortening the rolling interval between a steel plate and a steel coil provided in this embodiment includes:

[0016] S1. The production mode is divided into steel plate mode and steel coil mode according to the finished product;

[0017] S2. From the heating furnace tapping roller table to the downcoiler, it is divided into two logical control areas, namely the rolling mill area and the downcoiler area. The respective production modes of the rolling mill area and the downcoiler area can be the same or different ; If the production mode of the rolling mill area is different from that of the down coiler area, the steel biting condition of the rolling mill will not be met during the last rolling pass, that is, the rolling mill area and the down coiler area must be of the same production mode, Coil or flat rolling mode, if they are different, the conditions for biting steel rolling will not be met;

[0018] S3. Set a buffer zone in the tracking program to sav...

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Abstract

The invention discloses a method for shortening the interval rolling time of steel plates and steel coils and relates to the technical field of steel and iron smelting. The method comprises the stepsof S1, dividing production modes into a steel plate mode and a steel coil mode according to finished products; S2, dividing the area from a heating furnace steel tapping rejection roller bed to an underground coiling machine into two logic control areas, namely, the rolling mill area and the underground coiling machine area; S3, determining the working mode of the area where steel is located currently according to information of the steel and the actual position of the steel; and S4, controlling related equipment to operate in the steel plate production mode or in the steel coil production mode through the underground coiling machine according to the working mode of the underground coiling machine area. Through the method provided by the invention, the interval rolling time of two kinds ofplates is greatly shortened, the production efficiency is improved, and extra benefits are created.

Description

technical field [0001] The invention relates to the technical field of iron and steel smelting, in particular to a method for shortening the rolling interval between a steel plate and a steel coil. Background technique [0002] At present, in the cross-interval rolling production process of steel plate and steel coil, the working status of the related equipment of the down coiler (such as pinch roll, guide plate, etc.) is different in the two production modes of steel plate and steel coil, and In the conventional program, the operation of the equipment related to the down coiler is based on the rolling mode operation of the steel plate closest to the heating furnace side on the rolling line. Therefore, if the current steel coil has not been coiled (or the steel plate has not passed the downcoiler), and the next steel plate (or steel coil) has started rolling, then the relevant equipment of the downcoiler will press the steel plate (or steel coil) mode action, resulting in f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/00B21B15/00
CPCB21B15/00B21B37/005B21B2015/0057
Inventor 刘大勇张江生
Owner NANJING IRON & STEEL CO LTD
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