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Al-re-y alloy refiner and preparation method thereof for continuous casting and rolling

A technology of continuous casting, continuous rolling, and refining agent, applied in the direction of metal rolling, can solve the problems of polluting the environment, easy residual salt impurities, etc., and achieve the effects of excellent comprehensive performance, easy control of raw material components, and excellent refining effect.

Active Publication Date: 2022-04-22
JIANGSU HUAQI ALUMINUM SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problem that the application of the existing Al-Ti-B master alloy refiner is greatly limited due to environmental pollution and residual salt impurities in the manufacturing process, the present invention provides an Al-Ce-Y alloy refiner Agent and continuous casting and rolling preparation method thereof, the rolled state alloy room temperature tensile strength of the prepared Al-Ce-Y alloy refiner exceeds 120MPa, and the elongation reaches 30%, and the prepared Al-Ce-Y alloy The refiner has obvious refinement effect on aluminum and its aluminum alloys

Method used

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  • Al-re-y alloy refiner and preparation method thereof for continuous casting and rolling

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Embodiment 1

[0044] The weight percent of an Al-RE-Y alloy refiner is: according to the theoretical ratio, 3.2wt% Ce, 0.8wt% Y, and the rest are Al elements and inevitable impurity elements.

[0045] Its preparation method is:

[0046] (1) After properly considering the burning loss, calculate the amount of required raw materials according to the above-mentioned Al-RE-Y alloy composition and stoichiometric ratio; remove the oxide layer and remove the industrial pure aluminum ingot, Al-20Ce and Al-10Y master alloy Dry and preheat to 180-220°C; calculate the amount of raw materials required according to the composition and stoichiometric ratio of the alloy;

[0047] (2) After melting the industrial pure aluminum ingots accounting for 20-25% of the melting furnace height into a molten pool at 720-750°C, add the remaining aluminum ingots;

[0048] (3) After the aluminum ingots are completely melted, raise the temperature to 740-750°C, add Al-20Ce and Al-10Y master alloys in 2 to 4 times, keep...

Embodiment 2

[0053] The weight percent of an Al-RE-Y alloy refiner is: according to the theoretical ratio, 8wt% La, 4wt% Y, and the rest are Al element and inevitable impurity element.

[0054] Its preparation method is:

[0055] (1) After properly considering the burning loss, calculate the amount of required raw materials according to the above-mentioned Al-RE-Y alloy composition and stoichiometric ratio; remove the oxide layer and remove the industrial pure aluminum ingot, Al-20La and Al-10Y master alloy Dry and preheat to 180-220°C; calculate the amount of raw materials required according to the composition and stoichiometric ratio of the alloy;

[0056] (2) After melting the industrial pure aluminum ingots accounting for 20-25% of the melting furnace height into a molten pool at 720-750°C, add the remaining aluminum ingots;

[0057] (3) After the aluminum ingots are completely melted, raise the temperature to 740-750°C, add Al-20La and Al-10Y master alloys in 2 to 4 times, and keep t...

Embodiment 3

[0062] The weight percent of an Al-RE-Y alloy refiner is: according to the theoretical ratio, 4wt% La, 4wt% Ce, 3wt% Y, and the rest are Al elements and inevitable impurity elements.

[0063] Its preparation method is:

[0064] (1) After properly considering the burning loss, calculate the amount of required raw materials according to the above-mentioned Al-RE-Y alloy composition and stoichiometric ratio; mix industrial pure aluminum ingots, Al-20La, Al-20Ce and Al-10Y master alloys Remove the oxide layer and dry and preheat to 180-220°C; calculate the amount of raw materials required according to the composition and stoichiometric ratio of the alloy;

[0065] (2) After melting the industrial pure aluminum ingots accounting for 20-25% of the melting furnace height into a molten pool at 720-750°C, add the remaining aluminum ingots;

[0066] (3) After the aluminum ingot is completely melted, raise the temperature to 740-750°C, add Al-20La, Al-20Ce and Al-10Y master alloys in 2 ...

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Abstract

The invention provides an Al-RE-Y alloy refiner and a continuous casting and rolling preparation method thereof. The alloy refiner contains the following elements in terms of mass percentage: 3.2-8% RE, 0.8-4 %Y, and the balance is Al and other unavoidable impurities; wherein, the mass ratio of RE / Y is 2-4, and RE is at least one element among La and Ce. After the Al-RE-Y alloy refiner of the present invention is prepared by continuous casting and rolling, the tensile strength of the rolled alloy at room temperature exceeds 120 MPa, the elongation reaches 30%, and the comprehensive performance is excellent; the preparation method provided has a green process , simple, high efficiency, suitable for large-scale production, etc., the Al-RE-Y alloy refiner prepared by continuous casting and rolling has obvious refining effect on aluminum and its aluminum alloys.

Description

technical field [0001] The invention belongs to the field of industrial aluminum alloy and its manufacturing technology, and relates to an alloy refiner and a preparation method thereof, in particular to an Al-RE-Y alloy refiner and a continuous casting and rolling preparation method thereof. Background technique [0002] Aluminum alloy is a general term for alloys based on aluminum. It has the characteristics of low density and high strength, and has excellent specific strength. The main alloy systems are Al-Si system, Al-Cu system, Al-Mg system and so on. It has a wide range of applications in the fields of transportation, automobiles, machinery manufacturing, and aerospace. The grain refinement of aluminum alloy is the key to improve the mechanical properties of aluminum alloy. At present, the method of adding intermediate alloy is the main method. Although theoretically there are many ways to refine the grains of Al alloys, so far the Al-Ti-B master alloy is still the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/06C22C21/00C22C1/03B22D11/06B21B1/46
CPCC22C1/06C22C21/00C22C1/026C22C1/03B22D11/003B22D11/06B21B1/463
Inventor 叶兵谢石华
Owner JIANGSU HUAQI ALUMINUM SCI & TECH