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Special continuous casting crystallizer function protecting material for sulfur free-cutting steel and preparation method thereof

A technology for continuous casting crystallizers and protective materials, which is applied in the field of functional protective materials for continuous casting molds for sulfur-based free-cutting steels and its preparation. The effect of reducing the risk of sticking due to the large tendency of chemical transformation

Active Publication Date: 2016-02-24
HENAN XIBAO METALLURGICAL MATERIALS GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Suitable for tinplate series steel applications, but its application range is not wide enough

Method used

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  • Special continuous casting crystallizer function protecting material for sulfur free-cutting steel and preparation method thereof

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Effect test

Embodiment 1

[0040] A special continuous casting mold functional protection material for sulfur-based free-cutting steel, the chemical composition and weight percentage of the protection material are: SiO 2 40%, CaO27.2%, Li 2 O2.0%, Al 2 o 3 12.2%, K 2 O+Na 2 O5.5%, F - 6.3%, MgO5.0%, Fe 2 o 3 1.8%.

[0041] The protective material is made of the following raw materials in terms of weight percentage: 68.0% premelt, 3.0% lithium carbonate, 6.0% high fluorite powder, 1.5% high alumina, 2.0% cryolite, 1.0% sodium fluoride, Fine glass powder 1.0%, sodium carbonate 5.5%, imported carbon black 5.0% and graphite 7.0%.

[0042] The composition and weight percentage of the premelt are: SiO 2 47.0%, CaO40.0%, Al 2 o 3 5.0%, Li 2 O+K 2 O+Na 2 O6.0%, F - 4.0%. It is obtained by grinding waste glass slag, quartz ore, coke powder, low-grade fluorite, and soda through coarse grinding, stirring, high-temperature calcination, water quenching, drying, grinding and crushing to 300 meshes, an...

Embodiment 2

[0045] A special continuous casting mold functional protection material for sulfur-based free-cutting steel, the chemical composition and weight percentage of the protection material are: SiO 2 39.5%, CaO23.7%, Li 2 O2.5%, Al 2 o 3 16.0%, K 2 O+Na 2 O6.5%, F - 6.3%, MgO4.0%, Fe 2 o 3 1.5%,.

[0046] The protective material is made of the following raw materials in terms of weight percentage: 58.0% premelt, 5.0% lithium carbonate, 6% high fluorite powder, 3.5% high alumina, 5.5% cryolite, 2.5% sodium fluoride, Fine glass powder 2.5%, sodium carbonate 7.0%, imported carbon black 4.0% and graphite 4.0%.

[0047] The composition and weight percentage of the premelt are: SiO 2 45.0%, CaO35.0%, Al 2 o 3 7.0%, Li 2 O+K 2 O+Na 2 O7.0%, F - 10.0%. It is obtained by grinding waste glass slag, quartz ore, coke powder, low-grade fluorite, and soda through coarse grinding, stirring, high-temperature calcination, water quenching, drying, grinding and crushing to 400 meshes, ...

Embodiment 3

[0050] A special continuous casting crystallizer functional protection material for sulfur-based free-cutting steel, the chemical composition and weight percentage of the protection material are: CaO27.0%, Li 2 O3.5%, Al 2 o 3 18.3%, K 2 O+Na 2 O8.5%, F - 7.0%, MgO4.2%, Fe 2 o 3 1.5%, SiO 2 30.0%,.

[0051] The protective material is made of the following raw materials in terms of weight percentage: 59.5% premelt, 4.5% lithium carbonate, 8% high fluorite powder, 3.5% high alumina, 3.5% cryolite, 3.0% sodium fluoride, Fine glass powder 2.5%, sodium carbonate 6.5%, imported carbon black 3.5% and graphite 5.5%.

[0052] The composition and weight percentage of the premelt are: SiO 2 47.0%, CaO33.0%, Al 2 o 3 3%, Li 2 O+K 2 O+Na 2 O16.0%, F - 1.0%. It is obtained by grinding waste glass slag, quartz ore, coke powder, low-grade fluorite, and soda through coarse grinding, stirring, high-temperature calcination, water quenching, drying, grinding and crushing to 400 me...

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Abstract

The invention discloses a special continuous casting crystallizer function protecting material for sulfur free-cutting steel and a preparation method thereof. The protecting material comprises the following chemical components in percentage by weight: 30.2-40.2% of SiO2, 17.0-27.0% of CaO, Li2O not more than 3.5%, 9.3-18.3% of Al2O3, 2.5-8.5% of K2O+Na2O2, 2.0-7.0% of F-, MgO not more than 8.5%, and Fe2O3 not more than 2.0%. The vitrification tendency of slag films is high due to lower binary alkalinity; the lubrication can be guaranteed; the bonding risk is reduced; and the heat stability and the chemical stability of the protecting material in the melting process are improved.

Description

technical field [0001] The invention relates to a metallurgical auxiliary material, in particular to a special continuous casting crystallizer functional protection material for sulfur-based free-cutting steel and a preparation method thereof. Background technique [0002] Free-cutting steel is mainly used for high-speed cutting of automatic machine tools to make mechanical parts. It can be divided into sulfur-based, lead-based, calcium-based and other types. In recent years, with the improvement of global environmental awareness, the demand for environmentally friendly sulfur-based free-cutting steels is increasing. In order to meet the needs of the market, the characteristics of free-cutting steels The content of sulfur and phosphorus is several times higher than that of ordinary carbon steel. Due to the increase of sulfur and phosphorus content, the easy cutting performance of steel is increased, thus greatly improving the cutting speed of machine tools. Therefore, free...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/111
CPCB22D11/111
Inventor 李伟锋李书成张鹏周彬宋志刚余海洋
Owner HENAN XIBAO METALLURGICAL MATERIALS GROUP
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