The Application Of Aluminum Alloy Casting In Automobile

Die casting is abbreviated as die casting, which makes the melt fill the cavity under a certain pressure, and the castings have dense structure, high mechanical properties, precise dimensions, and small machining allowances. According to the pressure, it can be roughly divided into low pressure casting and high pressure casting. At present, almost all car transmission housings, clutch housings, water pump housings, carburetor housings, steering housings, etc. are all aluminum alloy die castings.

The benefits brought by the increase in the amount of automotive aluminum are mainly reflected in the following aspects:

• Promote the weight of the car, save energy and reduce consumption, and be environmentally friendly. For a 1300kg car, if its weight is reduced by 10%, its fuel consumption can be reduced by 8%, or every 100km traveled, 0.7kg of gasoline can be saved.
• Aluminum alloy parts can be recycled and reused to further save energy:Generally, the recovery rate of aluminum alloy is not less than 85%, and 60% of the aluminum alloy used in automobiles comes from recycled waste materials. By 2010, this value has risen to about 95%.
• Increase corrosion resistance and prolong service life:Aluminum and aluminum alloys can form a dense oxide film on the surface under natural conditions at room temperature, and its corrosion resistance and oxidation resistance are much higher than steel materials. At the same time, aluminum alloy has excellent surface treatment properties and is suitable for various surface treatment processes such as oxidation coloring, powder spraying, and painting.
• Help improve the balance and safety of car driving:The use of aluminum alloy wheels can reduce the vibration, so that a lighter rebound buffer can be used; in addition, because the aluminum alloy material is used to reduce the weight of the car without reducing the volume of the car, it makes the car more stable, and it is more stable in the event of an impact. The aluminum alloy structure can absorb and disperse more energy, so it is safer and more comfortable.

Typical applications of aluminum alloy castings in automobiles

Structural parts and covering parts are made of aluminum plate stamping parts, which are more than 100 kilograms lighter than similar cars. The aluminum alloy for structural parts has good axial shrinkage and excellent energy absorption, which is beneficial to improve safety.

The metal mold gravity casting process is characterized by pouring liquid metal into the metal mold by gravity pouring to form castings. The quality of the castings is better than that of aluminum alloy sand casting. It is a traditional method for producing higher quality castings. The Ford Motor Company of the United States built an aluminum casting plant in Brood Park Ohio in 1998 at a cost of $99 million. It uses a metal mold gravity casting method to produce aluminum cylinder blocks and aluminum cylinder heads. In addition, General Motors of the United States also uses the metal mold gravity casting method to produce V8 aluminum cylinder blocks. Metal mold low pressure casting is a process between metal mold casting and die casting. The aluminum melt fills the cavity from one or two gates located at the bottom along the riser tube under pressure, and moves away from the gate. The place starts to solidify and gradually expands toward the gate.

The utilization rate of aluminum melt in low pressure casting is much higher than that of metal mold casting, reaching 85% ~ 90%, while metal mold casting is only 40% ~ 60%, and the product has higher mechanical properties and better compactness. , But its scrap rate is relatively high, and the production process is also more complicated.

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By Minghe Die Casting Manufacturer |Categories: Helpful Articles |Material Tags: Aluminum Casting, Zinc Casting, Magnesium Casting, Titanium Casting, Stainless Steel Casting, Brass Casting,Bronze Casting,Casting Video,Company History,Aluminum Die Casting |Comments Off