At present, the global production and consumption of aluminium alloy structural parts are mainly concentrated in the United States, Japan, China, Germany, Italy and other countries and regions. In recent years, the use of automotive aluminium alloy has increased rapidly, and the market penetration has been increasing.

1. Application scope and precision requirement of aluminium alloy in automobile field

Experiments show that if the vehicle weight is reduced by 10%, the fuel efficiency can be increased by 6%-8%. For every 100 kg reduction in vehicle quality, the fuel consumption can be reduced by 0.3-0.6 liters for 100 kilometers. The vehicle weight can be reduced by 1%, and the fuel consumption can be reduced by 0.7%. At present, due to the need of environmental protection and energy saving, lightweight automobile has become the trend of world automobile development.

Precision aluminium alloy structural parts are mainly used in cooling system, vibration reduction system, micro motor, power system and so on. Based on the important role of aluminium alloy in the process of vehicle lightweight propulsion, its application scope in automobiles is more and more extensive. The application scope has expanded from the engine block, gearbox case, hub and other important parts of the car body at the beginning of Zui. At present, all-aluminium cylinder block engine has appeared, and the effect of weight reduction is very obvious (can reduce more than 30 kg). The American Aluminum Association has proposed that if the vehicle weight is reduced by 25%, the time of acceleration to 60 mph can be reduced from 10 seconds to 6 seconds; because the use of aluminium alloy profiles reduces the automobile's self-weight without reducing the vehicle's volume, it makes the car more stable, and the aluminium alloy profiles structure can absorb more energy when impacted, so it is safer and more comfortable.

At present, more than 90% of extruded aluminium materials for automobiles are produced by 6XXX series alloys, and only a few are extruded by 3XXX, 5XXX series and 7XXX series alloys. Most of them are extruded profiles and pipes for automotive parts manufacturing. At present, the passenger cars with all-aluminium body structure are some foreign high-end super sports cars, such as Audi A8 and A2, Jaguar XJ and so on, which are combined with profiles, sheets and castings.

Precision aluminium alloy structural products used in automotive field mainly include cooling system structural parts, micro motor structural parts, vibration absorption system structural parts, etc. The precision requirements of each component are as follows:

2. Aluminum alloys have been widely used in European and American automobile markets.

For the European automobile market, the use of bicycle aluminium alloy will reach 180 kg by 2020. According to the statistics of the European Aluminum Association and Ducker Worldwide, the use of bicycle aluminium alloy in the European automobile market increased from 50 kg to 140 kg from 1990 to 2012, and the use of bicycle aluminium alloy will reach 180 kg by 2020. Among them, A8, Jaguar XJ, Land Rover and other brands of high-end automobiles have reached 500 kg of bicycle aluminum. In the mid-2012, about 20% of the 140 kg aluminium alloy used by bicycles is wheel hub, nearly 30% is engine parts, 10% is gearbox, 8% is heat exchanger, 5% is door, hood, 5% is structure parts, 7% is steering and braking system, 3% is bumper.

According to Drive Aluminum's research, aluminium alloys have been used in heat exchangers in North American automotive markets since 1980, in hubs and engine assemblies since 1990, in bumpers and hood, and now mainly in body. Drive Aluminum counted 158 kg of aluminium for bicycles in North America in 2012, and it is estimated that the average amount of aluminium for bicycles will reach 250 kg by 2025. In North America in 2015, 73% of the aluminium alloys used in automobiles were cast aluminium alloys, which were mainly used in engine assembly, gearbox and heat exchanger parts; 27% of the deformed aluminium alloys were mainly used in automobile body, structure parts and engine cover parts.

3. Increasing Permeability of Aluminum Alloys in Automotive Parts

The automobile body is the growth point of Zui in the automobile in the future, and the engine assembly iso-die casting also has great excavation space. According to Drive Aluminum, the market penetration rate of aluminium alloy in automobile body and panel is only 6.6% in 2015. With the increasing voice of reducing emissions and low consumption, the market penetration of aluminium alloy will reach 26.6% by 2025. Among them, the permeability in the panel will reach 85%, the permeability in the all-aluminium body will reach 18%, and the permeability in the door will reach 46%. For engine block, the market penetration of North American aluminum alloy is expected to reach 85% by 2025. It is estimated that by 2025, the total demand for aluminium alloy in North American automotive market will reach 4.54 million tons, and the market space will be huge.