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Method for forecasting continuous-casting-production casting blank microstructure

A billet and continuous casting technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as poor model portability, difficulty in secondary development, and difficulty in meeting the requirements for solidification structure control of steel continuous casting

Inactive Publication Date: 2017-10-03
NORTHEASTERN UNIV
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Problems solved by technology

Since the steel continuous casting process is a complex high-temperature molten steel solidification process, which involves the coupling calculation of macro and micro physical fields, most of the existing mathematical models of the solidification structure of steel continuous casting slabs are based on the ProCAST commercial software. The module is established, the portability of the model is poor, and the secondary development is difficult in the later stage, and it is difficult to meet the requirements of process optimization and solidification structure control in the steel continuous casting production process

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  • Method for forecasting continuous-casting-production casting blank microstructure
  • Method for forecasting continuous-casting-production casting blank microstructure
  • Method for forecasting continuous-casting-production casting blank microstructure

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Embodiment Construction

[0084] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0085] combine Figure 1 to Figure 3 As shown, the prediction method of this embodiment can be composed of four parts: calculation of thermal physical property parameters, calculation of macroscopic solidification heat transfer, calculation of solidified tissue growth, and output of results.

[0086] (1) Calculation of thermophysical parameters

[0087] figure 2 A schematic diagram of dendrite growth in steel continuous casting slabs is shown. exist figure 2 In this method, assuming that the cross section of the dendrite morphology is a regular hexagon, firstly, a mathematical model of solute micro-segregation is established based on the principle of solute conservation between dendrites and the principle of solute diffusion;

[0088] Then, according to t...

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Abstract

The invention provides a method for forecasting a continuous-casting-production casting blank microstructure. The method includes the steps that device parameters and technology parameters of a continuous casting device producing casting blanks with to-be-analyzed steel grades are collected; according to parameters of the to-be-analyzed steel grades, thermal physical parameters of the steel grades are determined; a pre-established macro-and-micro multi-scale mathematical model is used in cooperation with the device parameters, the technology parameters and the thermal physical parameters, and structure information of the casting blanks corresponding to the current continuous casting device is forecasted. By means of the method, a continuous-casting-blank solidification structure can be well forecasted, and direct and reliable information is provided for optimizing the continuous-casting-crystallizer technology condition.

Description

technical field [0001] The invention relates to the metallurgical continuous casting technology, in particular to a method for predicting the microstructure of a slab produced by continuous casting. Background technique [0002] The continuous casting process of steel is essentially a process of continuous cooling and solidification of molten steel. When the molten steel is cooled by the crystallizer, a large number of nucleation occurs at the contact position between the molten steel and the surface of the crystallizer, and gradually grows towards the center of the billet. The growth of the solidification structure of the slab is accompanied by the redistribution of solutes between different phases in the steel. Since the solubility of the solute elements in the steel in the solid phase is lower than that in the liquid phase, during the solidification process, dendrites from the cast The growth of the billet surface toward the center is accompanied by the enrichment of solu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 罗森王朝辉陈耀赵群王卫领朱苗勇
Owner NORTHEASTERN UNIV
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