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Aluminum iron alloy with ultra-low carbon, ultra-low titanium and high silicon contents for deoxidizing aluminum silicon killed steel and manufacturing method of aluminum iron alloy

A silicon-killed steel and high-silicon-aluminum technology is applied in the field of smelting to achieve the effects of improving the utilization rate, avoiding oxidative burning loss, and improving the deoxidation speed.

Inactive Publication Date: 2012-12-26
江苏江南铁合金有限公司
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Problems solved by technology

[0009] In response to the above problems, the purpose of the present invention is to provide a high-silicon-aluminum-iron alloy with good deoxidation effect, ultra-low titanium, ultra-low carbon, and low impurity content and a new method for manufacturing the above-mentioned alloy, so as to solve the existing technical deficiencies

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  • Aluminum iron alloy with ultra-low carbon, ultra-low titanium and high silicon contents for deoxidizing aluminum silicon killed steel and manufacturing method of aluminum iron alloy

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Embodiment 1

[0029] Embodiment 1, as shown in the figure:

[0030] The process conditions adopt a 2t intermediate frequency coreless induction heating furnace with a power of 500kw and a standard capacity of 1500kg; one 50kw natural gas heating mantle; one 1.5t pre-baked ladle.

[0031] (1) Ingredients:

[0032]259kg steel scrap (C: 0.15%, P: 0.035%, S: 0.022%, Cu: 0.031%, Ti: 0.0050%, manganese: 0.4%, nitrogen: 0.03%)

[0033] 524㎏ Metal silicon (Si: 99.3%, C: 0.01%, P: 0.010%, S: 0.010%, Ti: 0.0015%)

[0034] 259kg aluminum ingot (Al: 99.7%)

[0035] (2) Melting:

[0036] 1) Add 259㎏ aluminum ingot into the ladle heated by natural gas, and raise the temperature to 150℃.

[0037] 2) Add steel scrap to an intermediate frequency furnace with vent bricks at the bottom and melt it. After melting, the upper covering slag CaO: 16kg, Al2O3: 3.6kg, SiO2: 1.5kg, CaF2: 8.4kg, open the argon valve at the bottom, and blow into the furnace Argon, and oxygen is blown into the furnace from the upp...

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Abstract

The invention belongs to the technical field of metallurgy and particularly relates to an aluminum iron alloy with ultra-low carbon, ultra-low titanium and high silicon contents for deoxidizing aluminum silicon killed steel and a manufacturing method of the aluminum iron alloy. The alloy contains aluminum, iron, silicon and impurities, and is characterized in that the alloy comprises the following components by weight percentage: 20%-30% of aluminum, 45%-55% of silicon, 22%-28% of iron and the balance of impurities. The impurities comprise the components by weight percentage: less than 0.008% of carbon, less than 0.02% of phosphorus, less than 0.02% of sulfur, less than 0.05% of copper, less than 0.005% of titanium, less than 1.0% of manganese and less than 0.05% of nitrogen. The manufacturing method comprises the steps of burdening, melting and casting. The alloy has the advantages of ultra-low titanium content, ultra-low carbon content, low impurity content and the like, and particularly meets the requirement of the aluminum iron killed steel on the ultra-low titanium and ultra-low carbon contents of a deoxidier.

Description

technical field [0001] The invention belongs to the technical field of smelting, and in particular relates to an ultra-low titanium, ultra-low carbon, high-silicon, aluminum-iron alloy suitable for deoxidation of aluminum-silicon killed steel and a preparation method thereof. Background technique [0002] In recent years, purity has become an important direction to improve the quality of steel products, especially aluminum-silicon-killed steels such as electrical steel, bearing steel, and spring steel. It is well known that non-metallic inclusions in molten steel will have adverse effects on various properties, service life and surface quality of steel, so controlling the content of non-metallic inclusions in molten steel has become an important research direction. The generation of non-metallic inclusions in molten steel is closely related to deoxidizers. Deoxidation products of deoxidizers and impurities are the main sources of non-metallic inclusions in molten steel. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C30/00C21C7/06
Inventor 梅泽锋夏宏梁朱翔鹰章汉云
Owner 江苏江南铁合金有限公司
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