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Continuous casting crystallizer functional protection material for ultra-low carbon IF steel

A technology for continuous casting mold and protective material, applied in the field of steelmaking, can solve the problems of slag inclusion, uneven inflow of slag film, unsuitable for IF steel, etc., to reduce adhesion, maintain the thickness of slag layer, and achieve good lubrication effect Effect

Active Publication Date: 2019-07-05
西峡县西保冶金材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the liquid slag layer of this patent is too thin, which can easily lead to uneven inflow of slag film and easy to cause slag inclusion, so it is not suitable for IF steel

Method used

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  • Continuous casting crystallizer functional protection material for ultra-low carbon IF steel
  • Continuous casting crystallizer functional protection material for ultra-low carbon IF steel
  • Continuous casting crystallizer functional protection material for ultra-low carbon IF steel

Examples

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with some specific embodiments.

[0021] See Table 1 for various raw materials and their weight percentages of the ultra-low carbon IF steel continuous casting crystallizer functional protection material in Examples 1-7 of the present invention.

[0022] The chemical composition and weight percentage of the ultra-low carbon IF steel continuous casting crystallizer functional protection material in Examples 1-7 of the present invention are shown in Table 2.

[0023] See Table 3 for the chemical composition and weight percentage of the premelts in Examples 1-7 of the present invention.

[0024] Table 4 shows the physical and chemical properties of the continuous casting crystallizer functional protection material for ultra-low carbon IF steel in Examples 1-7 of the present invention.

[0025] Table 1 Various raw material weight percentages (wt%) of the functional protection materials of Examples 1-7 of ...

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Abstract

The invention discloses a continuous casting crystallizer functional protection material for ultra-low carbon IF steel. The functional protection material is prepared from the following raw materialsincluding, by weight, 52%-65.5% of a pre-melting material, 3%-6% of lithium carbonate, 7%-12% of light roasting white alkali, 5%-14% of high fluorite powder, 3%-6% of high alumina, 2%-5% of cryolite,2%-5% of sodium fluoride, 1.5%-4% of glass powder, 1%-3% of carbon black and 0.1%-3.2% of calcium lignosulphonate. Protective slag ensures the heat preservation effect and the melting effect, molten steel recarburization and casting blank slag inclusion are effectively prevented, and the obtained IF steel casting blank subcutaneous and internal quality is good.

Description

technical field [0001] The invention belongs to the technical field of steelmaking, and in particular relates to a functional protection material for continuous casting crystallizers for ultra-low carbon IF steel. Background technique [0002] In recent years, in order to meet the needs of automobile weight reduction, material consumption reduction and fuel saving, the requirements for the strength of automobile steel sheets are getting higher and higher. Ultra-low carbon IF steel has excellent deep drawing performance and is widely used in the automobile steel sheet industry. In order to ensure the performance of IF steel, the chemical composition and inclusion content of the steel must be strictly controlled. Carbon is an interstitial atom in solid solution in steel. With the increase of its content, the yield limit of steel also increases, which increases the deformation resistance and affects the formability. Therefore, the lower the carbon content of IF steel for car sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/111
CPCB22D11/111
Inventor 贾勇勇李伟锋李书成
Owner 西峡县西保冶金材料有限公司
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