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Compensation method of hereditary coefficient after stop rolling for hot rolling coiling temperature model

A technology of genetic coefficient and compensation method, which is applied in the field of hot rolling production, can solve problems such as the inability to solve the influence of temperature drop, and achieve the effects of reducing abnormal head temperature control, improving quality level, and improving coiling temperature control accuracy

Active Publication Date: 2017-11-17
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

None of these patents can solve the technical problem of how to eliminate the influence of temperature drop caused by the suspension of rolling

Method used

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  • Compensation method of hereditary coefficient after stop rolling for hot rolling coiling temperature model
  • Compensation method of hereditary coefficient after stop rolling for hot rolling coiling temperature model
  • Compensation method of hereditary coefficient after stop rolling for hot rolling coiling temperature model

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Embodiment

[0061] This embodiment is aimed at the genetic coefficient compensation method after the hot-rolled coiling temperature model stops rolling, and the hot-rolled coiling temperature model is provided with a stop-rolling compensation module; the compensation method includes the following steps:

[0062] In the first step, the stop rolling compensation module continuously detects whether the production line is stopped rolling, and if so, starts timing, and stops timing when production resumes, and the timing time obtained at this time is the stop rolling time T.

[0063] The second step is to compare the stop rolling time T with the preset time T1, T2, T3, and determine the number n of steel strips to be compensated, the compensation gain G, and the compensation attenuation A according to the comparison results, and then combine the preset current steel Calculate the compensation value b of the Nth piece of strip steel after the stop rolling is calculated by using the default value...

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Abstract

The invention relates to a heredity coefficient compensation method used for a hot-rolling coiling temperature model after rolling stops. The heredity coefficient compensation method includes: arranging a rolling stopping compensation module additionally, monitoring rolling stopping time T, confirming compensation values, correcting a heredity coefficient of each segment and controlling the corrected heredity coefficients by the model. The heredity coefficient compensation method has the advantages that the heredity coefficients can be compensated properly when a rolling line stops rolling, and when the rolling line restarts rolling, coiling temperature can be controlled within a tolerance range basically, so that quality loss is reduced.

Description

technical field [0001] The invention relates to a method for compensating genetic coefficients after a hot-rolling coiling temperature model stops rolling, and belongs to the technical field of hot-rolling production. Background technique [0002] As far as the applicant knows, the laminar flow cooling zone is the cooling zone of the strip steel after hot rolling, and its main function is to cool the strip steel from a certain final rolling temperature to the required coiling temperature by controlling the laminar flow cooling spray valve. Since the coiling temperature has a great influence on the properties of the strip, the coiling temperature must be controlled within a certain target coiling temperature tolerance range. [0003] The existing hot-rolled coiling temperature model has the ability of self-adaptive learning. For strips of the same steel type, thickness grade and temperature grade, after several times of self-adaptive learning, a basically stable genetic coeff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/74B21C47/02
CPCB21B37/74B21C47/02
Inventor 姚禹袁军卞皓
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD