What is the Specific Application of Magnesium Alloy in Automobile Lightweight?

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Although the corrosion resistance of magnesium alloys is poor, corrosion protection is not the main consideration for automotive internal structures, so magnesium alloys have been widely used in automotive internal structures, especially in instrument panels and steering structures. According to reports, GM produced the first magnesium alloy instrument panel column in 1961, which saves 4kg of material compared to zinc alloy die-cast parts. In the past ten years, the use of magnesium alloy die-cast instrument panel columns has made great progress.

Magnesium Alloy Die Cast Part

The application of magnesium alloys in automobile bodies is limited, but they are also used in the entire garage. In addition, magnesium alloy is also used as a radiator support.

At present, cast or forged magnesium alloy wheels have been used in many high-priced racing cars or high-performance sports cars. However, due to the relatively high cost of magnesium alloy wheels and potential corrosion problems, it cannot be used on mass production vehicles.

In the future, the production of lightweight and low-cost magnesium alloy chassis components, such as wheels, engine suspension and control arms, will depend on the huge advancement of magnesium alloy casting technology. Various casting processes developed on aluminum alloy wheels and chassis components can be successfully applied to magnesium alloys after modification. In addition, the development of new magnesium alloys with low cost, corrosion-resistant layers, fatigue resistance and high impact strength will also accelerate the application of magnesium alloys in the chassis.

Powertrain

The cast parts of the powertrain, such as engine block, cylinder head, gearbox, oil pan, etc., are made of aluminum alloy. At present, the dynamometer test of the magnesium-enhanced engine prototype has made effective progress, which means that more magnesium alloys will be used in the power system in the future.

The main challenges facing the promotion and application of magnesium alloys

Poor corrosion resistance, high cost, and high scrap rate are obstacles to the popularity of magnesium alloys.

Magnesium Alloy Die Cast Part auto parts have the problems of high die casting cost, high scrap rate, and production safety risks. In addition, magnesium is easy to burn and explode during processing, and there are safety problems in production. The production site needs to be strictly managed to ensure safety in production.

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