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Brazed aluminum alloy foil with high strength and high corrosion resistance and manufacturing method thereof

A technology of aluminum alloy foil and manufacturing method, which is applied in the directions of metal rolling, temperature control, rolling force/roll gap control, etc., and can solve the problems of reduced corrosion performance and processing performance of alloys, and easy segregation.

Inactive Publication Date: 2010-06-09
长沙众兴新材料科技有限公司
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Problems solved by technology

At present, the most widely used Al-Mn alloy in the world is 3003 aluminum alloy (equivalent to 3A21 in my country). However, due to the high content of Mn in the alloy, segregation is very easy to occur during the casting cooling process, resulting in the corrosion performance and processing of the alloy. The performance is reduced, which limits the application of 3003 aluminum alloy in the air conditioning and refrigeration industry

Method used

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Embodiment Construction

[0015] According to the alloy composition range designed by the present invention, adopt 99.7Al ingot and Mn, Si, Fe agent and Al10Zr, Al10Ti, Al5Cr and Al5V master alloy, mix a kind of alloy A-1 and 3003 alloys (see table 1) by weight ratio. In a 5TKg class flame furnace, after smelting and refining, it is semi-continuously cast into a flat ingot of 160mm×600mm×2100mm, the pouring temperature is 710-720°C; it is kept at 610°C for 12 hours for homogenization, and after milling, press 12 %thickness ratio Combined into a composite ingot, heated in a Kw resistance furnace at 550°C for 2 hours, hot rolled to a thickness of 7.5mm, cold rough rolled to 1.2mm, annealed at 430°C for 2 hours, cold finish rolled to 0.25mm, and then annealed at 430°C 2h cold finish rolling to finished product thickness 0.18mm.

[0016] Through the DSC melting point measurement of the above composition alloy and 3003 alloy 650×0.08mm foil, the tensile properties are in accordance with "Metal Tensile Test ...

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Abstract

The invention relates to a brazed aluminum alloy foil with high strength and high corrosion resistance and a manufacturing method thereof. The brazed aluminum alloy foil comprises the following chemical ingredients in percentage by weight: 1.00-1.80 percent of Mn, 0.40-1.20 percent of Si, 0.50-1.30 percent of Fe, 0.10-0.50 percent of V, 0.05-0.25 percent of Cr, 0.06-0.25 percent of Zr, 0.08-0.30 percent of Ti, less than 0.03 percent of Cu, other added metals, and the balance of Al and unavoidable impurities. The ingredient alloys have high strength, high corrosion resistance and favorable shaping property; according to an ASTMG85-A3 standard, the brazed aluminum alloy foil with the thickness of 0.08mm, rolled by the alloys, has the penetration resistance time of over 15 days under the test , the corrosion resistance of three times of that of a 3003 alloy, and the tensile strength improved more than 15 percent under the same state.

Description

technical field [0001] The present invention relates to a chemical composition formula of a novel high-strength and high-corrosion-resistant aluminum alloy and a production process thereof, especially for an AA3000 series aluminum alloy, including reducing Cu content, adjusting Si, Mn and The content of Fe is compounded by adding elements such as V, Cr, Zr and Ti. Background technique [0002] The world's high-speed industrialization process has accelerated the energy crisis. In order to reduce gasoline consumption, the general approach of the automobile industry is to improve engine efficiency (from design), reduce driving resistance, improve transmission mechanism efficiency and reduce vehicle weight, etc., and the most effective way is to reduce The weight of the car. In order to reduce the weight of the car, one is to optimize the design, and the other is to use lightweight materials. Due to its rich resources, aluminum has many excellent processing formability and per...

Claims

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Application Information

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IPC IPC(8): C22C21/00B21B1/40B21B37/74B21B37/58
Inventor 杨新远张辉
Owner 长沙众兴新材料科技有限公司
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