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A method for fully automatic control of the steel burning temperature in a heating furnace

A technology for burning steel temperature and heating furnace, which is applied in the field of automatic control of steel burning temperature in heating furnaces, can solve problems such as product quality and small impact on stable production, save gas consumption, achieve good uniformity, and avoid over-burning or under-burning Effect

Active Publication Date: 2018-08-31
GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
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Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems existing in the prior art, and to provide a fully automatic control method for heating furnace steel burning temperature that has little impact on product quality and stable production, and can satisfy the control of mixed firing of different stainless steels in the heating furnace

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  • A method for fully automatic control of the steel burning temperature in a heating furnace
  • A method for fully automatic control of the steel burning temperature in a heating furnace
  • A method for fully automatic control of the steel burning temperature in a heating furnace

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Such as figure 1 Shown, a kind of heating furnace steel burning temperature automatic control method, this method comprises the following steps:

[0022] A. The enthalpy parameters of each steel type model (heating furnace preheating section, heating section, soaking section slab target enthalpy, enthalpy lower limit, and enthalpy upper limit) are set before the slab is put into the furnace according to different steel types, Specifications are automatically stored in the database table after being input by the operator on the screen;

[0023] B. After receiving the slab loading signal, the tracking system of the heating furnace searches for the steel type and specification of the pre-installed slab, assigns the heating model parameters in the database table to the slab and sends it to the secondary heating model control system ;

[...

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Abstract

The invention discloses a full-automatic control method for steel sintering temperature of a heating furnace. The parameters of plate blank temperatures are calculated by arranging heating models according to different steel types and specifications. Heating model parameters in a database table are given to the specific plate blanks and sent to a secondary heating model control system through a tracking system, and then the temperature lower limit of the plate blanks entering each section of the heating furnace and the temperature upper limit of the plate blanks discharged from each section of the heating furnace can be adjusted; the temperature set value of each section of a hearth is adjusted through a limiting requirement model; if the plate blanks of different steel types and specifications exist in the heating furnace, the temperature upper limit and the temperature lower limit of each plate blank are worked out, the temperature of the hearth is adjusted according to each plate blank, and the adjustment principle is that on the premise of considering all the plate blanks in each section, the plate blanks discharged out of the furnace are guaranteed preferentially, the temperature of the plate blanks can be automatically controlled when the plate blanks of different steel types and specifications exist in the same furnace, each plate blank can reach the target tapping temperature when arriving at the discharge position, and meanwhile the requirement for the start rolling temperature of rolling of a rolling mill is met.

Description

technical field [0001] The invention belongs to the technical field of automatic control of heating furnaces, and in particular relates to a method for fully automatic control of the temperature of steel fired in a heating furnace. Background technique [0002] The heating furnace of a hot rolling steel factory in the steel industry is a key process link in production. The quality of the slab heated by the heating furnace directly affects the stability of rolled steel and the performance of the product. At the same time, the heating furnace is also the main equipment for energy consumption. The existing steel burning temperature control in the heating furnace is divided into three-level automatic control and manual control. The three-level automatic control is the second-level heating model control system, the first-level combustion control system, and the zero-level electrical component execution system. Such as figure 2 As shown, during normal production, the secondary mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27D19/00
CPCF27D19/00F27D2019/0003F27D2019/0028
Inventor 程秀英
Owner GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
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