Method for forecasting temperature of slab of hot rolling heating furnace

A technology for heating furnaces and slabs, applied in temperature control, heat treatment furnaces, furnaces, etc., can solve the problems of cumbersome and complex calculations, and achieve the effects of simple calculation process, enhanced extensiveness, and improved forecasting accuracy

Inactive Publication Date: 2010-10-27
SHANGHAI BAOSIGHT SOFTWARE CO LTD
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method realizes the prediction of the slab temperature of the hot-rolled slab heating furnace through the method of summarizing the heat absorption rate and using the difference equation. The disadvantage is that the calculation is complicated and has certain limitations.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for forecasting temperature of slab of hot rolling heating furnace
  • Method for forecasting temperature of slab of hot rolling heating furnace
  • Method for forecasting temperature of slab of hot rolling heating furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The method of the invention mainly predicts the heating curve of the billet in the furnace and the temperature out of the furnace through intelligent optimization.

[0038] Difference equations for one-dimensional unsteady heat transfer

[0039] ∂ 2 T ∂ x 2 = 1 a ∂ T ∂ τ (Formula 1),

[0040] Partial derivative of temperature versus time Forward difference quotient, second order partial differential quotient of temperature versus distance The central difference quotient yields the difference equation:

[0041] (Formula 2)

[0042] In formula 1, T represents the temperature value of the billet, x is the coordinate in the thickness direction, τ is the time coordinate, and a is the thermal physica...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for forecasting the temperature of a slab of a hot rolling heating furnace, comprising the following steps of: firstly, carrying out simplified hypothesis on heat transfer of radiation; secondly, drawing a grid division diagram on a one-dimensional unsteady heat transfer problem, dividing a billet into 8 layers i.e. 9 nodes, and obtaining explicit difference equations with 9 nodes by utilizing a one-dimensional unsteady difference equation; and thirdly, determining an unknown thermal property coefficient f by adopting a genetic algorithm, and forecasting a temperature value of a next time by the explicit difference equations based on a temperature value of each node of a last time after determining the unknown thermal property coefficient f. By adopting the invention, the billet tapping temperature in a heating furnace can be accurately forecasted, and the tediousness and the complexity of calculation can be simplified.

Description

technical field [0001] The invention relates to a method for forecasting the slab temperature of a hot rolling heating furnace. Background technique [0002] The heating furnace is one of the key equipment of the steel rolling production line, and it is also the main energy-consuming equipment, which has the characteristics of nonlinear, time-varying and distributed parameters. The quality of billet heating directly affects the quality, output, energy consumption and life of the rolling mill of steel. Billet surface temperature and center temperature are the main quality indicators of billet heating. However, in actual industrial production, people cannot directly measure the temperature distribution of the moving billet in the furnace, and can only calculate the temperature of the billet in the furnace through various mathematical methods. The temperature distribution in the billet heating furnace, especially the temperature difference between the billet surface temperatu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/74C21D9/70
Inventor 赵忠雷
Owner SHANGHAI BAOSIGHT SOFTWARE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap