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Aluminum-manganese-titanium-iron alloy as deoxidant in steelmaking

A ferroalloy, Al-Mn-Ti technology, applied in the final deoxidation of killed steel molten steel, additives for smelting low-alloy steel and micro-alloy steel, Al-Mn-Ti-Fe alloy field, can solve the problems of improving steel toughness, low yield, and improving Steelmaking costs and other issues, to achieve the effect of improving plasticity and toughness, good economic benefits, and improving wear resistance and heat resistance

Inactive Publication Date: 2003-11-19
本溪冶炼厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum is a strong deoxidizer, but the specific gravity of aluminum is relatively light. When it is added to molten steel, under the action of air and steel slag, nearly 70-90% of aluminum is oxidized, the yield is low, and the resulting melting point is high. Aluminum oxide (Al 2 o 3 ), due to Al 2 o 3 The existence of the nozzle can easily cause nodules, and the high price of aluminum increases the cost of steelmaking and affects economic benefits. For this reason, the research on the composite deoxidizer for boiling steel is carried out, so that it can be used for both killed steel and boiling steel
In the Chinese invention patent applications 98104998.2, 98120546.1, and 01106367.X published in recent years, they all provide their respective Al-Mn-Ti-Fe alloys, but the content of Ti element in them is all low, less than 10%. Due to the low content of Ti element, in It is quickly oxidized during the deoxidation process of steelmaking, and cannot enter the molten steel, so it cannot achieve the effect of improving the toughness of steel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Using the second preparation method above, i.e. the induction furnace method, the chemical composition (% by weight) of the Al-Mn-Ti-Fe alloy produced by smelting is: Al 25.1%, Mn 28.7%, Ti 10.8%, and the balance is Fe.

Embodiment 2

[0017] Using the second preparation method above, i.e. the induction furnace method, the chemical composition (% by weight) of the Al-Mn-Ti-Fe alloy produced by smelting is: Al 25.1%, Mn 28.7%, Ti 16.8%, and the balance is Fe.

Embodiment 3

[0019] Using the second preparation method above, i.e. the induction furnace method, the chemical composition (% by weight) of the Al-Mn-Ti-Fe alloy produced by smelting is: Al 41.5%, Mn 10.3%, Ti 12.6%, and the balance is Fe.

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Abstract

An AlMnTiFe alloy used for deoxidizing and alloying in smelting steel contains Al (15-60 wt.%), Mn (3-45), Ti (10.5-25) and Fe (rest). It can improve properties of steel, such as plasticity, toughness, alloying level and resistance to corrosion and high temp.

Description

Technical field [0001] The invention relates to a ferroalloy product, in particular to an aluminum-manganese-titanium-iron alloy used for deoxidation and alloying in steelmaking. It is a supplement to existing ferroalloy products and belongs to the technical field of steelmaking. The invention is suitable for boiling molten steel Final deoxidation is also suitable for final deoxidation of killed molten steel, and it can also be used as an additive for smelting low-alloy steel and micro-alloy steel. Background technique [0002] All kinds of steelmaking compound deoxidizers currently used are basically compound ferroalloys containing silicon, so they can only be used for the final deoxidation of molten steel in calm steel. The deoxidation of molten steel in boiling is still made of aluminum cakes, aluminum strips and Aluminum ring etc. as deoxidizer. Aluminum is a strong deoxidizer, but the specific gravity of aluminum is relatively light. When it is added to molten steel, u...

Claims

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Application Information

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IPC IPC(8): C21C7/06C22C35/00
Inventor 姜殿波
Owner 本溪冶炼厂
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