Preparation process of aluminum iron alloy wire

An aluminum-iron alloy and preparation process technology, which is applied in the field of the preparation process of aluminum-iron alloy wire, can solve the problems of adverse effects of aluminum-iron alloy liquid smelting, reduction of steel quality, excessive N and O content of steel, etc., so as to prevent white spot cracks and heat treatment stress. Induction of hydrogen-induced cracks and hydrogen-induced delayed hysteresis cracks, improving quality, and the effects of uniform and fine quenching

Active Publication Date: 2014-04-02
JIANGSU ZHENGDA FURNACE CHARGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, aluminum-iron alloy deoxidizers are used for the deoxidation of most steel types of aluminum-iron alloy liquid. Therefore, if the content of N and O is not strictly controlled in the production process of aluminum-iron alloy, it will be brought into the deoxidation process of aluminum-iron alloy liquid during steelmaking. The smelting of aluminum-iron alloy liquid has adverse effects, eventually leading to excessive N and O content in steel, which greatly reduces the quality of steel

Method used

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Embodiment 1

[0027] This embodiment provides a preparation process of aluminum-iron alloy wire. The aluminum-iron alloy wire is made by coating the outer surface of the alloy wire with pure aluminum. The chemical composition of the alloy wire is aluminum: 40%, iron: 35%, carbon : 0.15%, silicon: 0.15%, phosphorus: 0.02%, sulfur: 0.03%, copper: 0.04%, cerium: 3.0%, hydrogen ≤ 1.8PPm, nitrogen ≤ 75PPm, oxygen ≤ 18PPm, the rest are impurities, aluminum-iron alloy wire The specific preparation method is as follows:

[0028] Step (1): Degrease the scrap steel, and melt it with direct reduced iron at a ratio of 6:2 in an electric furnace to form an aluminum-iron alloy liquid, add slag to the aluminum-iron alloy liquid for deoxidation refining, and the amount of slag added is 1.65Kg / 1 ton of aluminum-iron alloy liquid, the refining time is controlled at 22 minutes, the refining temperature is controlled at 1450°C, and the alkalinity is controlled at 2.8;

[0029] Step (2): Add hot aluminum mate...

Embodiment 2

[0036] This embodiment provides a preparation process of aluminum-iron alloy wire. The aluminum-iron alloy wire is made by coating the outer surface of the alloy wire with pure aluminum. The chemical composition of the alloy wire is aluminum: 60%, iron: 55%, carbon : 0.2%, silicon: 0.2%, phosphorus: 00.03%, sulfur: 0.04%, copper: 0.05%, cerium: 5.0%, hydrogen ≤ 1.8PPm, nitrogen ≤ 75PPm, oxygen ≤ 18PPm, the rest are impurities, aluminum-iron alloy wire The specific preparation method is as follows:

[0037] Step (1): Degrease the scrap steel, and melt it with direct reduced iron at a ratio of 6:2 in an electric furnace to form an aluminum-iron alloy liquid, add slag to the aluminum-iron alloy liquid for deoxidation refining, and the amount of slag added is 1.75Kg / 1 ton of aluminum-iron alloy liquid, the refining time is controlled to be 38 minutes, the refining temperature is controlled to be 1480°C, and the alkalinity is controlled to be 3.1;

[0038] Step (2): Add hot alumi...

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Abstract

The invention discloses a preparation process of an aluminum iron alloy wire. The aluminum iron alloy wire is prepared by wrapping the outer surface of an alloy wire with aluminum, and the preparation process is prepared from the following chemical components in percentage by weight: 40-60% of aluminum, 35-55% of ferrum, 0.15-0.2% of carbon, 0.15-0.2% of silicon, 0.02-0.03% of phosphorus, 0.03-0.04% of sulfur, 0.04-0.05% of copper, 3.0-5.0% of cerium, less than or equal to 1.8PPm of hydrogen, less than or equal to 75PPm of nitrogen, less than or equal to 18PPm of oxygen and the balance being impurities. By using the preparation process of the aluminum iron alloy wire, designed by the invention, the quality can be greatly improved, the whole process is simple and easy to implement, and the yield of the aluminum is increased.

Description

technical field [0001] The invention relates to a preparation process of aluminum-iron alloy wire. Background technique [0002] At present, aluminum-iron alloy deoxidizers are used for the deoxidation of most steel types of aluminum-iron alloy liquid. Therefore, if the content of N and O is not strictly controlled in the production process of aluminum-iron alloy, it will be brought into the deoxidation process of aluminum-iron alloy liquid during steelmaking. The smelting of aluminum-iron alloy liquid has adverse effects, eventually leading to excessive N and O content in steel, which greatly reduces the quality of steel. [0003] As the content of phosphorus and sulfur in steel continues to decrease, the harm of nitrogen and oxygen to steel is becoming more and more apparent. Therefore, some clean steels require a comprehensive reduction of the content of P, S, N, and O elements in steel. If the content of nitrogen is too high, it is easy to crack, if the content of nitro...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C30/02C22C1/02C21C7/06
Inventor 黄正君黄泽铭瞿幼中徐玉林孙锦荣
Owner JIANGSU ZHENGDA FURNACE CHARGE
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