Aluminum alloy die casting parts and automobile lightweight

China is the first big country in automobile consumption market and the auto sales is growing quickly day by day. Automobile lightweight has become the developing trend of major car makers due to the demand of environmental protection and energy saving.

What is automobile lightweight? In the premise of ensuring the strength and safety of the car, to reduce the vehicle's overall quality as far as possible, thus improving the power, reducing fuel consumption and reducing exhaust pollution. Experiments have shown that car quality is cut in half and fuel consumption is reduced by nearly half.

At present, the main lightweight materials are aluminum alloy, magnesium alloy and carbon fiber. But from the material contrast between them, aluminum alloy because of its low density and excellent performance will be better choice. The car weight is reduced considerably, meanwhile the safety, recovery and regeneration are kept well. In addition, many parts of the car can be replaced by aluminum alloy to achieve the purpose of light quantification, and the estimated average saving weight is 125%. According to relevant personage, the aluminum content of 2020 per vehicle will increase from 140 kg to 180 kg, rolling aluminum sheet and aluminum extrusion industry will have a long-term growth, all of this will become the development engine of aluminum industry.

With country's strong support for automobile manufacturing industry, automobile industry will gradually become a pillar industry of our national economy. It is expected that the number of cars will exceed 30 million by 2022. As the largest downstream consumer market of aluminum alloy automobile die casting, the scale of automobile manufacturing market will contribute more to the expansion of aluminum alloy automobile die casting industry market.

However, at present in the automobile aluminum rate, our country's technology is relatively backward. At present, the use of aluminum in automobile in developed countries has reached 180kg, and the alumination rate is 15%. However, the use of aluminum in China's automobile is very different from that of foreign countries. The average aluminum content is only 60kg, and the aluminum rate is less than 5%. Therefore, aluminum alloy die castings have many problems to be solved to meet the demand of China's automobile market.

The car's requirements for aluminum alloy die casting are in the direction of thin wall, complex shape, high strength and high quality. In order to meet this requirement, the casting process should be further optimized and the development of new alloy materials should be carried out. And the aluminum alloy die castings can meet this requirement very well..

From the point of view of design and process to reduce the production cost, such as using more than one module technology and automation technology to improve productivity and prolong the service life of mould, reduce the number of parts and USES the integrated design.

Adopting computer simulation technology to shorten the development cycle of process plan.

Increase the recovery of aluminum. Secondary aluminum is the main raw material of aluminum die casting. When developing foundry industry in our country, at the meantime great attention should be paid to the use of recycled aluminum resources, the research of aluminum separation technology from composite materials and effective combination of dissimilar waste materials. 

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