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Functional protection material for continuous casting mold 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 unsuitable IF steel, slag inclusion, uneven inflow of slag film, etc., achieve good lubrication effect, reduce adhesion, and maintain the thickness of slag layer Effect

Active Publication Date: 2021-02-26
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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  • Functional protection material for continuous casting mold for ultra-low carbon if steel
  • Functional protection material for continuous casting mold for ultra-low carbon if steel
  • Functional protection material for continuous casting mold for ultra-low carbon if steel

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Embodiment Construction

[0020]In the following, the present invention will be further described in conjunction with some specific embodiments.

[0021]The various raw materials and their weight percentages of the functional protective materials for continuous casting mold of ultra-low-carbon IF steel in Examples 1-7 of the present invention are shown in Table 1.

[0022]Table 2 shows the chemical composition and weight percentage of the functional protective material for continuous casting mold of ultra-low carbon IF steel in Examples 1-7 of the present invention.

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

[0024]The physical and chemical properties of the functional protective material for continuous casting mold of ultra-low carbon IF steel in Examples 1-7 of the present invention are shown in Table 4.

[0025]Table 1 The weight percentage (wt%) of various raw materials of the functional protection materials in Examples 1-...

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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 specifically relates to a continuous casting mold functional protective material for ultra-low carbon IF steel.Background technique[0002]In recent years, in order to meet the needs of automobile weight reduction, material consumption and fuel saving, the requirements for the strength of automobile steel sheets have become higher and higher. Ultra-low carbon IF steel has excellent deep drawing properties and is widely used in the automobile steel sheet industry. To ensure the performance of IF steel, the chemical composition and inclusion content of the steel must be strictly controlled. Carbon is a solid-soluble interstitial atom in steel. As its content increases, the yield limit of the steel increases, which increases the deformation resistance and affects the forming performance. Therefore, the lower the carbon content of the IF steel used to make car shells, the better . Titanium and niobium el...

Claims

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Application Information

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Patent Type & Authority Patents(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