A kind of dynamic furnace temperature control method of hot rolling heating furnace

A control method and heating furnace technology, applied in the field of steel rolling, can solve problems such as high temperature of silicon steel, affecting product quality, failing to meet process requirements, etc.

Active Publication Date: 2019-10-29
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the target temperature of some silicon steel processes is low. If the target temperature of the slab in front of the silicon steel is higher in the heating furnace, the weight of the front slab is the largest during the heating process. High, not up to the process requirements, seriously affecting product quality

Method used

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  • A kind of dynamic furnace temperature control method of hot rolling heating furnace
  • A kind of dynamic furnace temperature control method of hot rolling heating furnace
  • A kind of dynamic furnace temperature control method of hot rolling heating furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0139] Seeing table 1 is the heating billet original plan data of the present embodiment:

[0140] Table 1: Original Plan Data Implementation Example Table Cold Scale Values

[0141] steel type Slab Thickness Slab width Slab length heating target temperature 1 50A-MZ13 230mm 1280mm 10610mm 1140℃ 2 50A-MZ13 230mm 1280mm 10600mm 1140℃

[0142] In this example, different control methods are used to heat two slabs, the same steel type is 50A-MZ13, and the specifications are almost the same. Among them, No. 1 slab adopts the furnace temperature control method of the original system. No. 2 slab adopts the furnace temperature control method of this method, and the 50A-MZ13 steel grade is added in the special steel control database table, and the weighting coefficient rule belongs to the furnace temperature setting rule of the specific steel grade. Since the 50A-MZ13 steel belongs to silicon steel, it is sensitive to the process temp...

Embodiment 2

[0146] Seeing table 2 is the heating billet original plan data of the present embodiment:

[0147] Table 2: Original Plan Data Implementation Example Table Cold Scale Values

[0148] steel type Slab Thickness Slab width Slab length heating target temperature 1 SPCC 230mm 1080mm 9690mm 1220℃ 2 SPCC 230mm 1080mm 9460mm 1220℃

[0149] In this example, different control methods are used to heat two slabs, the same steel type is SPCC, and the specifications are almost the same. Among them, No. 1 slab adopts the furnace temperature control method of the original system. No. 2 slab adopts the furnace temperature control method of this method. Since the SPCC steel grade is not in the specific steel grade database table, the new method program judgment adopts the average necessary furnace temperature setting rule. Because SPCC steel grades are also sensitive to process temperature, the weighted calculation priority is high. In this e...

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Abstract

The invention relates to a dynamic furnace temperature control method for a hot rolling heating furnace. The method comprises the steps that real-time temperatures of steel billets in the furnace areperiodically calculated; the remaining in-furnace time of the steel billets in the furnace is predicted; the temperature of a certain region for a plate blank to come out of the furnace is predicted;the necessary furnace temperatures required by all sections in the heating furnace are determined; aiming at different steel types, the furnace temperature is dynamically adjusted, and the final furnace temperature set value is determined; the furnace temperature set value is calculated according to the working condition of one plate blank and the heating furnace, and each steel billet needs to becalculated once; for one furnace section, the number of the steel billets in the section is large, while the furnace set value is only one, therefore, all steel types existing in each furnace sectionneed to be retrieved, and if specific steel types exist, specific control over furnace temperature needs to be conducted. The method has the advantages that aiming at different steel types, furnace temperature setting is conducted through comprehensive treatment, and the produced specific steel types can be specially controlled.

Description

technical field [0001] The invention belongs to the field of steel rolling, and in particular relates to a dynamic furnace temperature control method of a hot rolling heating furnace. Background technique [0002] In modern industrial production, the heating furnace is a very important link in the production of hot strip steel mills. It affects the quality of slab heating, equipment stability, and production rhythm. It is also necessary to reduce fuel consumption and improve energy efficiency. The automatic combustion model of the heating furnace realizes the automatic burning of steel according to this requirement. [0003] The secondary control system of the heating furnace computer is a program control system. Its control object is the heating furnace, and the control parameters include variables such as furnace temperature, slab temperature, and heating time. The interference factors of the control include the change of the rolling rhythm, the calorific value of the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/74
CPCB21B37/74
Inventor 赵明车志良赵勐谭学超
Owner ANGANG STEEL CO LTD
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