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High-yield and high-strength cold-drawn deoxidized aluminum bar and processing technology thereof

A cold-drawn deoxidized aluminum bar and processing technology, applied in the field of aluminum bar processing, can solve problems such as hindering further dissolution of aluminum, affecting deoxidation efficiency, affecting aluminum yield, etc., to prevent sputtering, improve deoxidation efficiency, and improve utilization. rate effect

Active Publication Date: 2020-10-30
江苏戴美特医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the metallurgical industry, in order to ensure the quality of steel billets and steel products, it is necessary to reduce the oxygen content in steel during steelmaking and casting. Using aluminum for deoxidation is the most commonly used steel deoxidation method at present. Aluminum has a strong affinity for oxygen, and deoxidation High efficiency, low cost, and the oxide inclusions after aluminum deoxidation float up, which is easy to remove. In order to ensure that the inclusions are quickly separated from the molten steel during deoxidation and prevent secondary oxidation, it is often necessary to add excessive aluminum, and when the aluminum dissolves in molten steel It will float to the surface of molten steel, affecting the deoxidation efficiency. After the reaction, the aluminum and reactants remaining in the steel will have a great impact on the performance of the finished steel. After the aluminum rod used for molten steel deoxidation is added to the molten steel, the surface of the aluminum rod rapidly solution, oxidation produces a dense film layer, which hinders the further dissolution of aluminum and affects the yield of aluminum

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  • High-yield and high-strength cold-drawn deoxidized aluminum bar and processing technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Take calcium chloride, magnesium chloride, potassium heptafluoroniobate, and silicon oxide for molten electrolysis at a temperature of 710°C, a voltage of 4.3V, and an electrolysis time of 1 hour. After the reaction is completed, an alloy is prepared; preheat the furnace, add aluminum and alloy, and at this time The composition by weight is 9% silicon, 10% calcium, 5% magnesium, and 1% niobium, the temperature is raised to 840° C., and the temperature is kept for 1 hour. 0.4% manganese alloy is added in proportion to the mass, and the temperature is kept for 5 minutes. After removing the slag, the core material A is obtained; Adjust the temperature of the furnace to 720°C, pass in dry argon for refining and degassing, let it stand for 10 minutes, add 0.1% strontium alloy of the core material A as a modification agent, carry out modification treatment, let it stand for 10 minutes, cool down to 680°C, and cast to obtain core material B;

[0068] Take the core material B a...

Embodiment 2

[0071] Take calcium chloride, magnesium chloride, potassium heptafluoroniobate, and silicon oxide for molten electrolysis at a temperature of 715°C, a voltage of 4.4V, and an electrolysis time of 2 hours. After the reaction is completed, an alloy is obtained; preheat the furnace, add aluminum and alloy, and The components are 10% silicon, 11% calcium, 5% magnesium, and 2% niobium. The temperature is raised to 880°C, and the temperature is maintained for 2 hours. 0.5% manganese alloy is added in proportion to the mass, and the temperature is maintained for 5 minutes. After removing the slag, the core material A is obtained; Furnace temperature to 725°C, pass through dry argon for refining and degassing, stand still for 12 minutes, add 0.3% strontium alloy by mass of core material A as a modification agent, carry out modification treatment, stand still for 12 minutes, cool down to 690°C, and cast to obtain the core Material B;

[0072] Take the core material B and heat it to 535...

Embodiment 3

[0075] Take calcium chloride, magnesium chloride, potassium heptafluoroniobate, and silicon oxide for molten electrolysis at a temperature of 720°C, a voltage of 4.5V, and an electrolysis time of 2.5 hours. After the reaction is completed, an alloy is obtained; preheat the furnace, add aluminum, and press The weight components are 11% silicon, 12% calcium, 5% magnesium, and 3% niobium. The temperature is raised to 920 ° C, and the temperature is kept for 3 hours. 0.6% manganese alloy is added according to the mass ratio, and the temperature is kept for 6 minutes. After removing the slag, the core material A is obtained; Adjust the temperature of the furnace to 730°C, pass in dry argon for refining and degassing, let it stand for 15 minutes, add 0.3% strontium alloy of the core material A as a modification agent, carry out modification treatment, let it stand for 15 minutes, cool down to 700°C, and cast to obtain core material B;

[0076] Take the core material B and heat it to...

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Abstract

The invention discloses a high-yield and high-strength cold-drawn deoxidized aluminum bar and a processing technology thereof. The aluminum bar comprises a core material, a first shell layer and a second shell layer, the first shell layer and the second shell layer are sequentially arranged on the surface of the core material outwards, and the core material comprises the following components of, by mass, 9%-12% of silicon, 10%-13% of calcium, 5%-6% of magnesium and 1%-5% of niobium. Through the structure and the components of the aluminum bar, the strength and the yield of the aluminum bar areimproved, the first shell layer and the second shell layer wrap the core material, the core material is prevented from being interfered by air, aluminum oxidation is prevented from affecting the deoxidation efficiency of molten steel, the additive amount of elements difficult to obtain is reduced, the first shell layer and the second shell layer are rapidly oxidized, products float upwards, and the surface of the molten steel is shielded; and after molten steel is deoxidized, secondary oxidation of the molten steel can be avoided, sputtering of aluminum is prevented, excessive use is not needed, the utilization rate of the aluminum bar is increased, residues of the aluminum bar in the molten steel are reduced, the yield of the aluminum bar is increased, and the technology is suitable forwide application and popularization.

Description

technical field [0001] The invention relates to the field of aluminum rod processing, in particular to a cold-drawn deoxidized aluminum rod with high yield and high strength and a processing technology thereof. Background technique [0002] In the metallurgical industry, in order to ensure the quality of steel billets and steel products, it is necessary to reduce the oxygen content in steel during steelmaking and casting. Using aluminum for deoxidation is the most commonly used steel deoxidation method at present. Aluminum has a strong affinity for oxygen, and deoxidation High efficiency, low cost, and the oxide inclusions after aluminum deoxidation float up, which is easy to remove. In order to ensure that the inclusions are quickly separated from the molten steel during deoxidation and prevent secondary oxidation, it is often necessary to add excessive aluminum, and when the aluminum dissolves in molten steel It will float to the surface of molten steel, affecting the deox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/00C21C7/06C22C21/02B21C37/04
CPCC21C7/0056C21C7/06C22C21/02B21C37/04Y02P10/20
Inventor 马自强俞永东李国超
Owner 江苏戴美特医疗科技有限公司
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