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Continuous casting crystallizer casting powder for 310S stainless steel

A technology for continuous casting mold and mold flux, which is applied in the field of mold flux for continuous casting molds for 310S stainless steel, can solve the problems of low binary basicity of mold flux, poor heat transfer effect of mold flux, slow slag melting speed, etc. Improved ability and lubrication, stabilizing its own performance, reducing the effect of inclusions

Inactive Publication Date: 2019-07-02
西峡县西保冶金材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patented mold slag has low binary alkalinity, poor heat transfer effect, high melting point, slow slag melting speed, and insufficient lubrication, so it is not suitable for 310S stainless steel.

Method used

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  • Continuous casting crystallizer casting powder for 310S stainless steel
  • Continuous casting crystallizer casting powder for 310S stainless steel
  • Continuous casting crystallizer casting powder for 310S stainless steel

Examples

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with some specific embodiments.

[0018] See Table 1 for the chemical composition and weight percentage of the mold flux for continuous casting molds for 310S stainless steel in Examples 1-8 of the present invention.

[0019] See Table 2 for various raw materials and weight percentages of mold fluxes for continuous casting molds for 310S stainless steel in Examples 1-8 of the present invention.

[0020] The preparation method of the above-mentioned 310S stainless steel continuous casting mold powder, comprises the following steps:

[0021] Crush each raw material into a fine powder of 200-400 meshes, then add clear water to make the pulping concentration 57-63%, then ball mill, the ball milling time ≥ 50min, and then spray granulate to obtain hollow granular mold flux.

[0022] See Table 3 for the chemical composition and weight percentage of the premelts in Examples 1-8 of the present invention.

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Abstract

The invention discloses continuous casting crystallizer casting powder for 310S stainless steel. The continuous casting crystallizer casting powder is prepared from the chemical components in percentage by weight: 29%-34% of SiO2, 34%-40% of CaO, 1.2%-3% of Li2O, 5%-10% of Al2O3, 7%-12% of Na2O, 7.5%-11% of F<->, 0-2% of Fe2O3, 2%-4% of free carbon and the balance of trace elements. The casting powder is high in heat transfer uniformity, good in lubrication effect, stable in slag layer and uniform in melting, the non-clearing rate of the surfaces of cast 310S stainless steel casting blanks is99% or above, and the subsurface and interior quality of the casting blanks is good.

Description

technical field [0001] The invention belongs to the technical field of steelmaking, and in particular relates to a mold slag for continuous casting molds for 310S stainless steel. Background technique [0002] 310S stainless steel is an austenitic chromium-nickel stainless steel. Due to the high content of nickel (Ni) and chromium (Cr), it has good oxidation resistance, corrosion resistance and high temperature resistance. It is based on chromium and nickel with molybdenum, tungsten, niobium and titanium added. And other elements, because of its face-centered cubic structure, it has high strength and creep strength at high temperature. As a necessary functional protective material for continuous casting of 310S stainless steel, it has its limitations. In theory, each steel type should correspond to a corresponding mold slag. It must be a special slag, so that the mold slag can be truly realized. Real metallurgical properties provide technical support for steel mills to prod...

Claims

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Application Information

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