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Aluminum alloy and production method thereof

An aluminum alloy and alloy liquid technology, applied in the field of alloys, can solve the problems of difficult to control harmful substances and impurities in aluminum alloys, difficult to accurately control the upper and lower limit elements, and a large range of element additions, and achieve good extrusion. performance, optimized mechanical properties, the effect of eliminating internal stress

Inactive Publication Date: 2018-06-29
佛山金兰铝厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing 6351 aluminum alloy has too many elements to add, and it is difficult to accurately control the upper and lower limit elements. In particular, there are problems such as abnormal quality of extruded products and difficulty in judging the composition. In addition, harmful substances and impurities in the aluminum alloy difficult to control

Method used

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  • Aluminum alloy and production method thereof
  • Aluminum alloy and production method thereof
  • Aluminum alloy and production method thereof

Examples

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preparation example Construction

[0056] Correspondingly, the present invention also provides a method for preparing an aluminum alloy, comprising the following steps:

[0057] S1. Put the aluminum ingot into the casting furnace for melting, and the temperature in the furnace is 730-760°C;

[0058] S2. Add the following raw materials into the casting furnace according to the ratio: 0.85-1.0wt% Si, greater than zero and less than or equal to 0.2wt% Fe, greater than zero and less than or equal to 0.05wt% Cu, 0.5-0.55wt% Mn, 0.55-0.6wt% of Mg, greater than zero and less than or equal to 0.1wt% of Zn, greater than zero and less than or equal to 0.1wt% of Ti, wherein the content of Al is the balance of the above components;

[0059] S3, carry out degassing treatment and refining, the refining temperature is 720-750 ° C, after refining, let it stand for 20-40 minutes to obtain alloy liquid;

[0060] S4, casting the alloy liquid into an aluminum alloy rod, wherein the casting speed is 85-95mm / min;

[0061] S5. Extr...

Embodiment 1

[0077] S1. Put the aluminum ingot into the casting furnace for melting, and the temperature in the furnace is 730°C;

[0078] S2, adding the following raw materials into the casting furnace: Si, Fe, Cu, Mn, Mg, Zn and Ti;

[0079] S3, carrying out nitrogen degassing and refining, the refining temperature is 720°C, and standing for 20 minutes after refining to obtain alloy liquid;

[0080] S4, casting the alloy liquid into an aluminum alloy rod, wherein the casting speed is 85mm / min;

[0081] S5, heating the aluminum alloy rod to 470°C, and heating the mold to 460°C;

[0082] S6. Put the ingot into the extrusion cylinder, and the extrusion rod of the extruder pushes the aluminum alloy ingot in the extrusion cylinder to extrude from the discharge port of the extrusion die to form an extruded profile. The temperature of the discharge port is 525 ℃;

[0083] S7. The extruded profile is pulled by the tractor after the discharge port, and the water mist quenching device is used f...

Embodiment 2

[0086] S1. Put the aluminum ingot into the casting furnace for melting, and the temperature in the furnace is 740°C;

[0087] S2, adding the following raw materials into the casting furnace: Si, Fe, Cu, Mn, Mg, Zn and Ti;

[0088] S3, carrying out nitrogen degassing and refining, the refining temperature is 730°C, and standing for 30 minutes after refining to obtain alloy liquid;

[0089] S4, casting the alloy liquid into an aluminum alloy rod, wherein the casting speed is 90mm / min;

[0090] S5, heating the aluminum alloy rod to 480°C, and heating the mold to 460°C;

[0091] S6. Put the ingot into the extrusion cylinder, and the extrusion rod of the extruder pushes the aluminum alloy ingot in the extrusion cylinder to extrude from the discharge port of the extrusion die to form an extruded profile. The temperature of the discharge port is 530 ℃;

[0092] S7. The extruded profile is pulled by the tractor after the discharge port, and the water mist quenching device is used f...

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Abstract

The invention discloses an aluminum alloy and a production method thereof. The ratio of Si / Mg / Mn is adjusted, the proportions of Mg and Mn components are reduced, and the proportion of an Si componentis improved to ensure the overall strength of the aluminum alloy and make the aluminum alloy have good extrusion properties. In addition, the corrosion resistance of the aluminum alloy is improved bylowering the content of Fe / Cu / Zn.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to an aluminum alloy and a manufacturing method thereof. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in industry. Because of its high strength, light weight and good electrical conductivity, it is widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry and other technical fields. [0003] At present, the 6351 aluminum alloy used in the automotive field generally has low strength, is easily corroded and has poor durability when used outdoors for a long time. In addition, the extrusion efficiency is low and the cost is high, thus hindering the development of aluminum alloys in the automotive field. [0004] The existing 6351 aluminum alloy is one of the higher strength of the 6 series aluminum alloys, which is higher than the 6061 aluminum alloy and slightly lower than th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C1/02C22F1/043
CPCC22C21/02C22C1/026C22F1/002C22F1/043
Inventor 冷雄水张小兵
Owner 佛山金兰铝厂有限公司
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