Method for predicting the temperature of a steel billet, method for heating a steel billet, and method for manufacturing a steel plate.
JP2026100957APending Publication Date: 2026-06-22JFE STEEL CORP
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- JFE STEEL CORP
- Filing Date
- 2024-12-10
- Publication Date
- 2026-06-22
AI Technical Summary
Technical Problem
Existing methods for predicting steel billet temperature in a heating furnace are inaccurate and require direct temperature measurement, which is time-consuming and labor-intensive, especially when fuel gas changes occur.
Method used
Determine the overall heat absorption rate using radiant and convective heat transfer amounts from the inner wall and combustion gas to the steel billet, without direct temperature measurement, by employing equations that account for changes in fuel gas composition and emissivity.
Benefits of technology
Enables accurate prediction of steel billet temperature from the start of operation, reducing downtime and increasing production efficiency by allowing for stable heating and hot-rolling processes.
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Smart Images
Figure 2026100957000001_ABST
Abstract
This invention provides a method for predicting the temperature of a steel slab, which allows for the determination of the overall heat absorption rate without measuring the temperature of the steel slab inside the heating furnace, and enables the prediction of the temperature of the steel slab inside the heating furnace from the initial stages of operation using the determined overall heat absorption rate. [Solution] A method for predicting the temperature of a steel slab in a heating furnace, wherein the total heat absorption rate is determined using the amount of radiant heat transfer from the inner wall of the heating furnace to the steel slab, the amount of radiant heat transfer from the combustion gas to the steel slab, and the amount of convective heat transfer from the combustion gas to the steel slab, and the temperature of the steel slab in the heating furnace is predicted using the total heat absorption rate.
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