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System and method for calculating optimal heating curve of blank in heating furnace

A heating curve and calculation system technology, applied in heat treatment furnaces, furnaces, furnace types, etc., can solve problems such as difficulty in achieving optimal control of heating furnaces, difficulty in adapting to different billet heating process requirements, and high labor intensity

Active Publication Date: 2014-11-26
WISDRI WUHAN WIS IND FURNACE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heating process of the blank, also known as the optimal heating curve of the blank, needs to be specified before the blank is put into the furnace. At present, the technical personnel mainly intervene manually on the basis of the original heating process based on the production and operation experience, which is labor-intensive and difficult to adapt to. Heating process requirements for different blanks, poor precision and flexibility
This will directly affect the formulation of the heating system after the billet is put into the furnace, thereby affecting the heating quality of the metal and the production efficiency of the heating furnace, and it is difficult to achieve the optimal control of the heating furnace

Method used

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  • System and method for calculating optimal heating curve of blank in heating furnace
  • System and method for calculating optimal heating curve of blank in heating furnace
  • System and method for calculating optimal heating curve of blank in heating furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0130] For the hot charging blank, according to the method provided by the present invention, the initial internal node temperature is calculated and obtained, as shown in Table 2.

[0131] Table 2 Calculation of node temperature of hot charging billet

[0132]

Embodiment 2

[0134] For the hot charging blank, the initial internal node temperature is obtained through calculation according to the method provided by the present invention, as shown in Table 3.

[0135] Table 3 Calculation of node temperature of hot charging billet

[0136]

Embodiment 3

[0138] For the hot charging blank, the initial internal node temperature is obtained through calculation according to the method provided by the present invention, as shown in Table 4.

[0139] Table 4 Calculation of node temperature of hot charging billet

[0140]

[0141] Two. Embodiments of the invention

[0142] ● Example 1

[0143] Call the blank parameter initialization module 1 to initialize the calculation parameters. The initialization values ​​of the main parameters of the blank are shown in Table 5, and the initialization values ​​of the main parameters of the heating furnace are shown in Table 6.

[0144] Table 5 Blank parameters

[0145] parameter name

Width (m)

Thickness (m)

Density (kg / m 3 )

blackness

Furnace entry temperature (℃)

parameter value

1.20

0.24

7850

0.8

300

[0146] Table 6 Heating furnace parameters

[0147]

[0148]

[0149] Using the method provided by the present inven...

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Abstract

The invention relates to a method for calculating an optimal heating curve of a blank in a heating furnace and stepping and heating of the blank in the heating furnace can be realized mainly by position tracking and temperature tracking. The original furnace temperature schedule is revised by comprehensive considering of a difference between the tapping temperature and the target temperature of the blank and a heating rate of the blank, and the blank is reheated by the revised furnace temperature schedule; for the blank satisfying the tapping temperature, the fuel consumption used for the heating in the time is represented by an integral-replaced objective function; and after the optimizing calculation can be carried out for specified number of times, one integral-replaced objective function having the least value is selected out, and a heating curve corresponding to the integral-replaced objective function having the least value is taken as the optimal heating curve of the blank with the size. According to the method for calculating the optimal heating curve of the blank in the heating furnace, the calculations of the optimal heating curves of a plurality of blanks before the blanks are sent into the furnace can be finished, and the calculating efficiencies are high; and a heating schedule is beneficially revised by the calculated optimal heating curve of the blank by a heating furnace mathematical model, the heating quality of metal and the production efficiency of the heating furnace are improved, and the optimal control of the heating furnace is beneficially realized.

Description

technical field [0001] The invention relates to a heating furnace heat treatment process for billets in the technical field of hot rolling, in particular to the field of optimal control of the heating furnace and a calculation method for the optimal heating curve of billets in the heating furnace. Background technique [0002] The mathematical model of the thermal process of the heating furnace and the thermal state of the billet in the furnace has been gradually applied to the optimal design and optimal control technology of the heating furnace. For the billet in the heating furnace, under the condition that the target temperature is met, the production efficiency of the heating furnace can be improved by adopting a reasonable heating system and minimizing the heat loss and fuel consumption of the furnace. At present, the heating system of the billet in the heating furnace is mainly determined according to experience, and the target discharge temperature, furnace time and f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D9/70
Inventor 段广东杨进李卫杰王晓亮
Owner WISDRI WUHAN WIS IND FURNACE
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