Multi -aluminum iron alloy de -oxygen and preparation methods

A technology of aluminum-iron alloy and deoxidizer, which is applied in the field of smelting, can solve the problems of poor deoxidation effect and large amount of deoxidizer, and achieve the effect of increasing residence time, excellent desulfurization ability and reducing deoxidation cost

Inactive Publication Date: 2017-05-24
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned deoxidizers for steelmaking also have disadvantages such as poor deoxidation effect and large amount of deoxidizers added.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The multi-element aluminum-iron alloy deoxidizer is melted simultaneously in a 2-ton crucible melting resistance furnace and a 3-ton medium-frequency induction furnace, and poured into the same ladle, and then poured into a multi-element aluminum-iron alloy deoxidizer block material in a cast iron mold. The specific melting and pouring methods are :

[0012] (1) Metal aluminum, metal magnesium and metal zinc are first melted in a crucible melting resistance furnace. After the temperature of the metal liquid reaches 722°C, it is taken out of the furnace and poured into a ladle. (2) Mix and heat ferrosilicon, ferromanganese and Q235 steel scrap in an induction furnace, add silicon-barium alloy, silicon-calcium alloy and rare earth ferrosilicon alloy after the alloy material is melted, and raise the temperature to 1577°C after the composition is qualified before the furnace After coming out of the furnace, inject step (1) into the ladle containing aluminum-magnesium-zinc m...

Embodiment 2

[0014] The multi-element aluminum-iron alloy deoxidizer is melted simultaneously in a 2-ton crucible melting resistance furnace and a 3-ton medium-frequency induction furnace, and poured into the same ladle, and then poured into a multi-element aluminum-iron alloy deoxidizer block material in a cast iron mold. The specific melting and pouring methods are :

[0015] (1) Metal aluminum, metal magnesium and metal zinc are first melted in a crucible melting resistance furnace. After the temperature of the metal liquid reaches 739°C, it is taken out of the furnace and put into a ladle. (2) Mix and heat ferrosilicon, ferromanganese and Q235 scrap steel in an induction furnace, add silicon-barium alloy, silicon-calcium alloy and rare earth ferrosilicon alloy after the alloy material is melted, and raise the temperature to 1562°C after the composition is qualified before the furnace After it is out of the oven, pour it into the ladle containing aluminum-magnesium-zinc metal liquid in ...

Embodiment 3

[0017] The multi-element aluminum-iron alloy deoxidizer is melted simultaneously in a 2-ton crucible melting resistance furnace and a 3-ton medium-frequency induction furnace, and poured into the same ladle, and then poured into a multi-element aluminum-iron alloy deoxidizer block material in a cast iron mold. The specific melting and pouring methods are :

[0018] (1) Metal aluminum, metal magnesium and metal zinc are first melted in a crucible melting resistance furnace. After the temperature of the metal liquid reaches 731°C, it is taken out of the furnace and poured into a ladle. (2) Mix and heat ferrosilicon, ferromanganese and Q235 steel scrap in an induction furnace, add silicon-barium alloy, silicon-calcium alloy and rare earth ferrosilicon alloy after the alloy material is melted, and raise the temperature to 1560°C after the composition is qualified before the furnace After coming out of the furnace, inject step (1) into the ladle containing aluminum-magnesium-zinc m...

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Abstract

The invention relates to a multielement aluminum-iron alloy deoxidizer and a preparation method thereof, belonging to the technical field of smelting. The multielement aluminum-iron alloy deoxidizer is composed of the following chemical components in percentage by mass: 30.0-35.0% of Al, less than 0.35% of C, 15.0-18.0% of Si, 4.0-6.0% of Mn, 3.0-3.5% of Ca, 4.0-4.5% of Ba, 3.5-3.8% of Mg, 0.5-0.8% of RE, 1.2-1.5% of Zn, less than 0.02% of S, less than 0.03% of P and the balance of Fe. The deoxidizer adopts a crucible melt resistance furnace and an induction furnace to simultaneously perform smelting, and is injected into one casting ladle and cast into a cast iron mold to obtain the aluminum-iron alloy deoxidizer block material. The multielement aluminum-iron alloy deoxidizer has excellent deoxidizing effect.

Description

technical field [0001] The invention relates to a steelmaking deoxidizer and a preparation method thereof, in particular to a multi-component aluminum-iron alloy deoxidizer and a preparation method thereof, belonging to the technical field of smelting. Background technique [0002] In the process of steel smelting, at the end of smelting, after the chemical composition is qualified, and before the steel is tapped, a deoxidizer must be added for deoxidation to reduce the brittleness of the steel and improve the plasticity and toughness of the steel. The traditional method is to use aluminum as a deoxidizer. The density of aluminum is low, it is easy to float when added to molten steel, and the deoxidation effect is poor. The aluminum-iron deoxidizer has high density, low cost and good deoxidation effect, thus gradually replacing the traditional aluminum deoxidizer. Deoxidizer is an auxiliary charge that must be added in the steelmaking process. At present, there are many k...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/06
Inventor 贺跃光潘颖青符寒光贺煜婷吴凤秋胡铁军李立海邵磊森
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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