Special aluminum-alloy material for liquid die-forging molding of aluminum-alloy wheels of heavy-duty vehicle and molding method

Abstract

The invention relates to a special aluminum-alloy material for liquid die-forging molding of aluminum-alloy wheels of a heavy-duty vehicle and a molding method. The method comprises the steps of (1) preparing the aluminum-alloy material; (2) smelting an aluminum alloy; (3) transferring a liquid; (4) quantitatively casting; (5) filtrating; (6) carrying out liquid die-forging; (7) carrying out solid solution treatment; (8) carrying out ageing strengthening; (9) machining; (10) carrying out surface treatment. The aluminum-alloy material contains the ingredients in percentage by weight: 6.5-7.5% of Si, 0.3-0.6% of Mg, 0.02-0.20% of Ti, 0.01-0.03% of Sr, 0.01-0.09% of Er, 0.01-0.08% of Be and the balance of Al. The aluminum-alloy wheels made by adopting the aluminum-alloy material and the molding method can meet the requirements on performance of heavy-duty commercial aluminum-alloy wheels, are low in production cost, high in production efficiency and high in product percent of pass, and can be widely applied to heavy-duty vehicles, such as trucks, buses and the like, instead of forged aluminum-alloy wheels.

Description

technical field [0001] The invention belongs to the field of wheel processing, in particular to a special aluminum alloy material and a forming method for liquid die forging forming of aluminum alloy wheels for heavy-duty vehicles. Background technique [0002] With the rapid development of the automobile industry, the number of commercial vehicles (trucks and buses) in the world has increased year by year; by 2012, China has become the country with the largest number of trucks and buses in the world; The increase and the frequent occurrence of safety accidents have become issues faced by the world. Energy saving, reduction of environmental pollution and safety have become the themes of the future development of the transportation industry. Aluminum alloy wheels have the advantages of light weight, small rotational inertia, and fast heat dissipation; they have a good effect on automobile energy saving, reducing exhaust emissions, reducing tire burst accidents, and improving...

AI Technical Summary

Problems solved by technology

[0003] Commercial vehicle aluminum alloy wheels have high performance requirements, and ordinary cast aluminum alloy wheels cannot meet the requirements of use. Forged aluminum alloy wheels have the advantages of high structure density and excellent mechanical properties, which can meet the requirements of commercial vehicle wheels; however, their manufacturing costs are high and materials Insufficiencies such as low utilization rate and low production efficiency limit the popularization and use of forged aluminum alloy wheels in the field of commercial vehicles