Near-net-shape casting production method for automotive aluminum alloy parts

A technology of casting production and aluminum alloy, which is applied in the field of aluminum alloy material preparation, can solve the problems of many processing procedures and low raw material utilization rate of aluminum control arms, so as to improve the utilization rate of raw materials, suppress the tendency of coarse recrystallizers, and improve The effect of overall performance

Active Publication Date: 2013-05-01
CHINA NON-FERROUS METALS PROCESSING TECH CO LTD
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Problems solved by technology

Compared with the steel control arm, in addition to the difference in raw material cost, the aluminum control arm has more processing steps and low raw material utilization rate are also the key to limit cost reduction

Method used

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Embodiment Construction

[0014] The production method of near-net-shape casting of aluminum alloy parts for automobiles of the present invention adopts a semi-continuous casting crystallizer that is consistent with the shape and size of the forged product, that is, the semi-continuous casting crystallizer is designed and provided according to the size requirements of the forged product, and is prepared by semi-continuous casting Produce ingots whose external dimensions are close to the same shape as forged products. The near-net-shaped billets of each specification are only for forged products whose cross-sectional external dimensions are close to it. The ratio of the cross-sectional area of ​​the ingot to the forged product is 1.35: 1~1.05:1, the ingot is sliced ​​and directly formed by one or two die forgings, which reduces the use of other deformation methods for pre-forging billets, simplifies the production process, and obtains aluminum alloy forged products. In the forging forming stage, the comp...

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Abstract

The invention provides a near-net-shape casting production method for automotive aluminum alloy parts. A semicontinuous casting crystallizer which has the same shape and dimension as a forged product is adopted, a near-net-shape cast ingot is produced by the semicontinuous casting method, the ratio of the cross-sectional area of the cast ingot to the cross-sectional area of the forged product is 1.35:1 to 1.05:1, the cast ingot is cut into sheets, which are then directly formed by one or two times of die forging, and thereby aluminum alloy forged products are obtained. The shape of the ingot produced by the method is near to the shape of the finished forged product, the ingot-preforging step is reduced, the comprehensive utilization rate of alloy materials is increased, meanwhile, coarse recrystallization cannot occur in the process of forging, and the overall properties of the product are enhanced.

Description

technical field [0001] The invention relates to a near-net-shape casting production method of aluminum alloy parts for automobiles, belonging to the technical field of aluminum alloy material preparation. Background technique [0002] In recent years, under the premise that the requirements for luxury, comfort, high performance and safety and reliability have been continuously improved, the weight of automobiles has a tendency to increase continuously. In order to alleviate the pressure brought by the development of automobiles on energy consumption and the natural environment, automobile manufacturers have to list reducing fuel consumption and limiting automobile exhaust emissions as one of the important goals of automobile development, and the lightweight of the body is to achieve this goal effective way. Studies have shown that if the weight of the vehicle is reduced by 10%, the fuel efficiency can be increased by 6% to 8%; for every 100 kg of vehicle mass reduction, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/00C22F1/04
Inventor 长海博文何振波郭世杰刘金炎俆义郝志刚
Owner CHINA NON-FERROUS METALS PROCESSING TECH CO LTD
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