Continuous casting slab solidification cooling process analogy method based on precise thermophysical parameters

Abstract

The invention relates to a continuous casting slab solidification cooling process analogy method based on precise thermophysical parameters. A thermophysical parameter database module, a continuous casting slab solidification heat-transfer calculation module and a data output module are contained. The continuous casting slab solidification cooling process analogy method comprises the steps of establishing the thermophysical parameter database module of steel through experiments and induction and processing related document data, and enabling the database module to be embedded in researched and developed moderate-thickness slab continuous casting solidification cooling process analogy and optimization software V1.0. The established thermophysical parameter database module provides accurate data support for the continuous casting slab solidification heat-transfer calculation module, and the continuous casting solidification cooling process analogy method based on precise steel thermophysical parameters is formed. On the basis, a steel high-temperature plasticity forecasting method with chemical components serving as independent variables is formed by applying a regression analysis method, and an established high-temperature plasticity forecasting model forms an important content of the thermophysical parameter database module of the steel. At present, the method is applied to practical continuous casting production.

Description

technical field [0001] This patent relates to the technical field of continuous casting slab quality control, and is suitable for multi-steel continuous casting production. In the simulation study of continuous casting process, the thermophysical parameters of steel are of great significance to the accuracy of the results of continuous casting slab solidification and cooling process. This patent establishes a thermal parameter database module of steel through experiments, induction and collation of relevant literature data, and embeds the database module into the developed medium-thick slab continuous casting solidification cooling process simulation and optimization software V1.0 (software copyright registration serial number: 20130117A92844), forming a simulation method for the solidification and cooling process of continuous casting slabs based on precise thermophysical parameters. It has been applied to the actual production of continuous casting. Background technique ...

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Problems solved by technology

[0004] At present, many literature reports have mentioned the application of commercial engineering analysis software such as ANSYS, ABAQUS, etc. to simulate the solidification and heat transfer process of the slab, but no database of thermal physical properties of steel has been established.

In addition, although the software such as PROCAST establishes the thermophysical parameter data of some common steel types, the above-mentioned software is only suitable for the analysis of the solidification process of the slab, and there is no direct application in the actual production of continuous casting in the reported literature.

In the continuous casting production process of most iron and steel enterprises, the slab solidification heat transfer analysis software generally adopts a single calculation method to obtain the high temperature physical properties of steel. Due to the limitation of the applicable conditions of the calculation formula of physical properties, the error of the calculation results is relatively large

Especially when carrying out multi-steel continuous casting production, a single calculation formula is difficult to meet the production needs

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