System for simulating molten steel solidification heat-transfer process inside continuous casting crystallizer

A technology of continuous casting crystallizer and simulation system, which is applied in the direction of casting equipment, indicating equipment/measurement equipment configuration, manufacturing tools, etc. It can solve the complex calculation process, large applicability difference of different models, and difficulty in quickly obtaining crystallizers. Internal thermal boundary conditions and other issues, to achieve the effect of high applicability and high reliability

Inactive Publication Date: 2011-11-02
WISDRI ENG & RES INC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the whole process, due to differences in the understanding of specific process parameters such as the degree of liquid convection, the range of vibration marks, the distribution of solid-liquid slag, and the air gap, and the calculation process is quite compli

Method used

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  • System for simulating molten steel solidification heat-transfer process inside continuous casting crystallizer
  • System for simulating molten steel solidification heat-transfer process inside continuous casting crystallizer
  • System for simulating molten steel solidification heat-transfer process inside continuous casting crystallizer

Examples

Experimental program
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Example Embodiment

[0028] Example 1. A simulation system for the solidification and heat transfer process of molten steel in a continuous casting mold

[0029] The system consists of three parts: model data initialization module, data operation module and result output module. The model data initialization module is composed of the continuous casting machine database, the physical parameter database and the production process database in turn, and the interface and data operation are set up on the module. The input end of the module is connected; the data running module is composed of a one-dimensional calculation model and a two-dimensional calculation model, which is used to simulate the solidification and heat transfer process of molten steel in the continuous casting mold; the result output module is used to display and save the calculation results. The module is composed of automatic data output saving function and calculation result graphic display function, and an interface is set up on the m...

Example Embodiment

[0033] Example 2: Casting Stb32 steel on a 1000 mm×200 mm slab continuous casting machine.

[0034] Specific steps are as follows:

[0035] 1. Model data initialization process:

[0036] Firstly, confirm the two-dimensional calculation model of the slab, the mold size of 1000 mm×200 mm, the mold height of 900 mm, the position of the meniscus 100 mm, the time step length of 0.1 s, and the space step length of 10 mm; secondly, by confirming the steel type Stb32, Obtain the physical parameters of the steel; finally, in the production process database, it is confirmed that the casting temperature is 1572°C, the pulling speed is 1.2 m / min, the effective thickness of the mold copper plate is 24 mm, the initial temperature of the mold cooling water is 35°C, and the flow rate is 8 m / s.

[0037] 2. Data simulation calculation process:

[0038] By receiving the initial data from the model data initialization process, the two-dimensional calculation model formulas (1) and (2) are used in the sim...

Example Embodiment

[0047] Example 3: Casting Q235 steel on a 150 mm×150 mm billet continuous casting machine.

[0048] Specific steps are as follows:

[0049] 1. Model data initialization process:

[0050] First, confirm the two-dimensional calculation model of the slab, the size of the mold 150 mm×150 mm, the height of the mold 1000 mm, the position of the meniscus 100 mm, the time step length of 0.1 s, and the space step length of 10 mm; secondly, by confirming the steel type Q235, Obtain the physical properties of the steel; finally, in the production process database, confirm that the casting temperature is 1535℃, the pulling speed is 3m / min, the effective thickness of the mold copper plate is 14 mm, the initial temperature of the mold cooling water is 35℃, and the flow rate is 8 m / s.

[0051] 2. Data simulation calculation process:

[0052] By receiving the initial data obtained from the model data initialization process, the two-dimensional calculation model formulas (1) and (2) are used in the sim...

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Abstract

The invention provides a system for simulating a molten steel solidification heat-transfer process inside a continuous casting crystallizer. The system comprises a model data initialization module, a data operation module and a result output module, wherein the model data initialization module comprises a continuous casting machine database, a physical parameter database and a production process database in sequence and is provided with an interface for connection with an input end of the data operation module; the data operation module comprises a one-dimensional computation model and a two-dimensional computation model and is used for offline simulation of a molten steel solidification heat-transfer process inside the continuous casting crystallizer; and the result output module is used for displaying and saving a calculation result, has the functions of automatically outputting and saving data and graphically displaying the calculation result and is provided with an interface for connection with an output end of the data operation module. The system disclosed by the invention is simple, convenient and feasible, has high reliability, is suitable for offline simulation of the molten solidification heat-transfer processes inside crystallizers of different continuous casting machine types, and provides a theoretical basis for determination and regulation of the continuous production process in large-scale production.

Description

technical field [0001] The invention relates to the technical field of continuous casting, in particular to off-line simulation of the solidification and heat transfer process of high-temperature liquid steel in a continuous casting crystallizer. Background technique [0002] As the heart of continuous casting, the continuous casting process in the mold is a complex process associated with phenomena such as heat transfer, solidification, flow and solute redistribution. The phenomena are interrelated and interact with each other, which makes the heat transfer behavior in the crystallizer extremely complicated. However, the heat transfer process of molten steel in the mold has a very important influence on the quality of the slab. The uneven heat transfer rate is easy to cause cracks in the billet; in addition, if the heat transfer is insufficient, it is easy to cause the thin billet shell to bulge, deform, or even leak. The solidification behavior of the slab depends on the...

Claims

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Application Information

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IPC IPC(8): B22D11/16B22D2/00
Inventor 徐永斌马春武幸伟徐海伦孙铁汉李智杜斌叶理德邵远敬
Owner WISDRI ENG & RES INC LTD
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