Method for increasing rolling paces of 5m rolling mill

A rolling rhythm and rolling mill technology, applied in the field of improving the rolling rhythm of a 5-meter rolling mill, can solve the problems of increasing production costs, energy consumption waste, etc., to improve production efficiency, reduce production costs, increase the speed of the steel transfer roller table and throw The effect of steel air over velocity

Active Publication Date: 2020-02-11
NANJING IRON & STEEL CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0002] The average machine-hour output of a single stand of a 5-meter wide-thick plate rolling mill is 12 pieces, the rolling interval for turning steel is 32 seconds, and the rolling reversal time for non-turning steel passes is 7.05 seconds. The rolling gap produces a lot of energy waste and increases the Cost of production

Method used

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Embodiment Construction

[0014] Below, the present invention will be described in further detail in combination with examples.

[0015] Taking a single stand of a 5-meter rolling mill in a wide and heavy plate factory as an example, in 2018, the existing general method was used to control rolling. The average number of rolling blocks per hour was 12, and the rolling time of each steel plate was 5 minutes. The rolling efficiency was low. A large amount of energy waste occurs in the rolling gap.

[0016] Adopt a kind of method of improving the rolling rhythm of 5 meters rolling mill of the present invention to optimize the rolling process, comprising:

[0017] 1. Optimize the control logic of roll gap action and roll shifting action, and shorten the rolling time of each steel plate by 4.0 seconds.

[0018] Specifically, when the first pass of rolling is a non-steel transfer pass, and the roll gap is lifted from the steel throwing value of the previous piece to more than 200mm, the roll gap and roll shi...

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Abstract

The invention discloses a method for increasing rolling paces of a 5m rolling mill and belongs to the technical field of steel rolling. The method has the beneficial effects that through optimizationof control logics of a roll gap motion and a roll alternating motion, conversion of a steel rotation code, optimization of a rolling pass, and optimization of tracking of a to-be-rolled position of asteel plate, a steel rotation rolling pass speed and a steel throwing empty pass speed are increased, and an intra-pass steel throwing distance is shortened, so the rolling paces are obviously increased; rolling time spent on each steel plate is reduced by 18.4s on average; and significant effects are realized in increase of production efficiency and reduction of production cost.

Description

technical field [0001] The invention belongs to the technical field of steel rolling, and in particular relates to a method for improving the rolling rhythm of a 5-meter rolling mill. Background technique [0002] The average machine-hour output of a single stand of a 5-meter wide-thick plate rolling mill is 12 pieces, the rolling interval for turning steel is 32 seconds, and the rolling reversal time for non-turning steel passes is 7.05 seconds. The rolling gap produces a lot of energy waste and increases the Cost of production. With the rise of raw material prices, the cost of steel per ton has risen, and the low production, low efficiency and high energy consumption of the 5-meter wide and thick plate rolling mill have become a heavy burden, and the rolling rhythm needs to be tackled and solved. Contents of the invention [0003] Purpose of the invention: In order to overcome the defects of the prior art, the present invention provides a method for improving the rollin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/00B21B37/58
CPCB21B37/00B21B37/58
Inventor 黄龙滕达孙旭东王玉姝陈维宇郑明哲王立国张淼
Owner NANJING IRON & STEEL CO LTD
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