Cast Magnesium Alloy

Cast magnesium alloy is a magnesium alloy formed by adding alloying elements to magnesium base, which is suitable for producing parts by casting method. According to the forming process, magnesium alloys can be divided into cast magnesium alloys and deformed magnesium alloys, which have great differences in composition and microstructure properties. Cast magnesium alloy is mainly used in automobile parts, machine parts and electrical components. The wrought magnesium alloy is mainly used in thin sheet, extruded parts and forgings.

Cast magnesium alloy has the following characteristics: large crystallization temperature interval, large volume shrinkage and linear shrinkage, the amount of eutectic in the structure, specific heat capacity, latent heat of solidification, density and liquid indenter are small, low fluidity, tensile cracking, shrinkage tendency is generally much larger than cast aluminum alloy.

1. Aerospace field

As far as aviation materials are concerned, structural weight reduction and structural load and function integration are important directions for the development of aircraft body structural materials. Magnesium has long been used in the aviation industry because of its low density and high specific strength. The economic benefits and performance improvements brought about by the weight reduction of aviation materials are significant, and the fuel cost savings brought by the same weight reduction of commercial aircraft and automobiles are nearly 100 times that of the latter. The fuel cost savings of fighter jets is nearly 10 times that of commercial aircraft, and more importantly, the improvement of its maneuverability can greatly improve its combat effectiveness and survivability. Because of this, the aviation industry will take various measures to increase the amount of magnesium alloy.

2. Military field

Magnesium alloy has the advantages of light weight, good specific strength and stiffness, good vibration damping performance and strong electromagnetic interference shielding ability, which can meet the requirements of military products for weight reduction, noise absorption, shock absorption and radiation protection.

3. Automotive field

Magnesium alloy used as an automotive component usually presents the following advantages:

1) Improve the comprehensive standard of fuel economy, reduce emissions and fuel costs, it is estimated that 60% of the fuel used by the car is consumed by the car's own weight, and every 10% of the car's weight is reduced, the fuel consumption will be reduced by 8%-10%;

2) Weight reduction can increase the loading capacity and payload of the vehicle, while also improving braking and acceleration performance;

3) It can greatly improve the noise and vibration of vehicles.

4. Motorcycle field

Over the past 50 years, through continuous technological innovation, the application of magnesium alloy in motorcycles has been continuously expanded in breadth and depth, and the application models have expanded from racing cars to sports motorcycles, lightweight motorcycles and concept motorcycles, covering more than ten major motorcycle brands in Europe, America and Japan. The application parts of magnesium alloy cover more than 40 kinds of power systems, transmission systems and various motorcycle accessories. Among them, Dymay wheels in the UK alone are used in as many as 400 models. The application of magnesium alloy in domestic motorcycles is still blank, and Chongqing Longxin took the lead in the trial production of the model LXl50 "magnesium alloy green concept motorcycle", which has attracted wide attention in China, and 3 of the 12 parts used have now achieved large-scale production.

5. 3C field

3C products -- Computer, Communication, Consumer Electronic Product (computer, communication, consumer electronic product) is the fastest growing industry in the world today. Digital technology has led to the emergence of various digital products. Magnesium alloy 3C products first appeared in Japan, in 1998, Japanese manufacturers began to use a variety of portable goods (such as PDA. Magnesium alloy is used in mobile phones, etc. Today, the most common 3C product using magnesium alloy is a laptop computer, which was first launched by Sony Corporation of Japan. Driven by the development trend of 3C products towards light, thin, short and small, the application of magnesium alloys has continued to grow in recent years.