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A system and method for predicting the thickness of the initial solidified billet shell in a steel continuous casting crystallizer

A continuous casting crystallizer and crystallizer technology are applied in the field of metallurgical process production and can solve the problem of inability to accurately predict the solidification thickness of the crystallizer and the like.

Active Publication Date: 2016-04-20
NORTHEASTERN UNIV LIAONING
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Problems solved by technology

Therefore, the mathematical model calibrated by the traditional breakout shell thickness measurement method cannot accurately predict the solidification thickness of the mold

Method used

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  • A system and method for predicting the thickness of the initial solidified billet shell in a steel continuous casting crystallizer
  • A system and method for predicting the thickness of the initial solidified billet shell in a steel continuous casting crystallizer
  • A system and method for predicting the thickness of the initial solidified billet shell in a steel continuous casting crystallizer

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Embodiment Construction

[0093] The specific implementation of the system and method for predicting the thickness of the initial solidified slab shell in the steel continuous casting mold of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0094] This implementation mode is applied to the prediction system of the initial solidification shell thickness in the steel continuous casting crystallizer in the industrial field, as shown in the attached figure 1 It includes: the information collection module is used to collect the composition of the cast steel, the geometric dimensions of the crystallizer, the geometric dimensions of the submerged nozzle, the continuous casting process conditions, and the measured values ​​of the thickness of the solidified slab shell and the distance between dendrites at different positions along the mold ; The mold geometry includes slab width, slab thickness, mold height, copper plate thickness, water tank depth, water ...

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Abstract

A system and method for predicting the initial solidification shell thickness in a steel continuous casting mold. The system includes an information collection module, a steel type thermophysical parameter calculation module, a crystallizer initial solidification shell growth prediction module and a result output module; the method Including: detection of the microscopic solidification structure of the billet shell; collecting initial information: calculating the solute segregation and solidification path between dendrites during the solidification process of the molten steel to obtain the thermal physical parameters of the steel; solving the molten steel flow field and crystallizer temperature field of the mold and the solute field of the crystallizer, and coupled the macroscopic transport process in the crystallizer with the evolution behavior of the microscopic solidification structure in the crystallizer to further predict the shell growth behavior during the solidification process of high-temperature molten steel inside the continuous casting mold; the predicted solidification in the crystallizer The structure morphology and the thickness of the initially solidified shell at different positions in the crystallizer are output and displayed, as well as the comparison results with the actual thickness of the initially solidified shell. The invention can accurately predict the microscopic solidification behavior of the initial solidification shell in the crystallizer.

Description

technical field [0001] The invention belongs to the technical field of metallurgical process production, and in particular relates to a prediction system and method for the thickness of an initial solidification slab shell in a steel continuous casting crystallizer. Background technique [0002] As the most critical component in the continuous casting machine, the continuous casting mold is called the "heart" of the continuous casting machine. The high-temperature molten steel flows into the crystallizer through the submerged nozzle, and under the action of the crystallizer cooling water, a primary solidified shell of a certain shape is formed. The uniformity of the primary solidified slab shell in the crystallizer plays a decisive role in the surface quality of the continuous casting slab and the continuous casting castability, and the thickness of the solidified slab shell is related to the strength of the slab. It is very important to prevent breakout. For this reason, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/16
CPCB22D11/18
Inventor 罗森王卫领朱苗勇何奇冯艺姜东滨刘航
Owner NORTHEASTERN UNIV LIAONING
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