Liquid-state die forging machining cast aluminum alloy and casting process thereof

Abstract

The invention discloses a liquid-state die forging machining cast aluminum alloy and a casting process thereof. The aluminum alloy adopts the liquid-state die forging technology and comprises, by masspercent, 7 to 8.0% of Si, 0.05 to 0.1% of Cu, 0.01 to 0.05% of Mn, 0.3 to 0.45% of Mg, 0.11 to 0.17% of Zn, 0.01 to 0.12% of Fe, and the balance Al and inevitable impurities. The total amount of theimpurities is controlled below 0.05% by mass percent. The liquid-state die forging method comprises the steps of burdening, aluminum alloy melt smelting, refining degassing deslagging, liquid-state die forging forming and solid solution aging treatment. The liquid-state die forging aluminum alloy has the advantages of being high in strength, good in plasticity and portable and is suitable for stress structural parts such as a car body, and a car head of a liquid-state die forging dual-wheel car, the made car head and the made car body are more portable, and during use, the user saves more labor.

Description

technical field [0001] The invention relates to the field of aluminum alloy liquid die forging, in particular to a liquid die forging process for casting aluminum alloy and a casting process thereof. Background technique [0002] Liquid die forging is a technology that solidifies molten metal under the direct action of extrusion force. Liquid die forging technology has a strong feeding function, which can eliminate defects such as shrinkage cavities, pores, and hot cracks. Liquid die forgings have the advantages of compact structure, high mechanical properties, high dimensional accuracy, and heat treatment strengthening. The unique technical advantages of liquid die forging are very suitable for the production of high-strength and tough metal materials. [0003] Although the proportion of automobiles is getting higher and higher, many people still choose bicycles. Bicycles are still an indispensable means of transportation for us, but the production technology of bicycles i...

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Problems solved by technology

[0003] Although the proportion of automobiles is getting higher and higher, many people still choose bicycles. Bicycles are still an indispensable means of transportation for us, but the production technology of bicycles is still a few years ago. For the front, body, etc. The parts are still made of traditional steel, which increases the quality of the bicycle virtually, and the body is heavier, making riding a burden; the existing technology also provides aluminum alloys obtained by liquid die forging, but the obtained aluminum Alloys are used in automobiles, and the standards that need to be met when used in automobiles and two-wheeled vehicles are definitely different. In some respects, two-wheeled vehicles have higher requirements for aluminum alloys, such as strength or corrosion resistance. , In addition, the traditional electric bicycle shoulder cover structural parts, there will be small pits on the appearance, numb, not smooth, which seriously affects the user experience

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