Applications of Magnesium Alloy Die-Cast Parts

Magnesium alloy die-cast parts have a wide range of applications, including medical devices, camera components, laptop casings, and automotive engine parts. They are commonly used in high-end, high-tech, eco-friendly, and new energy fields, and tend to be expensive. The development of magnesium alloys has traditionally been driven by the aerospace industry's demand for lightweight materials that can perform under harsh conditions. With magnesium alloys having a density only two-thirds that of aluminum, this characteristic has led to their extensive use in casting and forging products.

 

In recent years, the increasing demand for superior corrosion resistance in magnesium alloys has led to significant advancements in new types of magnesium alloys. Improvements in mechanical properties and corrosion resistance have drawn widespread attention to magnesium alloys for aerospace and special applications, such as those specified for use in projects like the MD 500 helicopter.

 

Magnesium Alloys in Aerospace

 

Due to their low density and good mechanical properties, RZ5 alloy has long been the preferred material for helicopter gearbox housings. However, as the demands for overhaul intervals and corrosion performance have increased, manufacturers have begun reconsidering their material choices. Previously, RZ5 was commonly used for gearbox housings, but many new projects are now opting for WE43 alloy instead, including main rotor gearbox castings. WE43 has been chosen for these applications due to its excellent corrosion resistance.

 

The European helicopter companies EC 120 and NH90 also use WE43 for gearboxes and plan to continue its use in future projects. Additionally, WE43 will replace RZ5 on older helicopters. RZ5, ZRE1, MSR, and EQ21 alloys are widely used in aircraft engines and gearbox housings. Although WE43 is increasingly favored for its superior corrosion resistance and high-temperature performance, these other alloys will continue to be used in these applications.

 

Magnesium alloy castings can produce very large components, such as intermediate compressor casings for turbo engines, including the Rolls-Royce Tay casing (weighing 130 kg) and the BMW Rolls-Royce BR710 casing made from RZ5. Other aerospace applications include auxiliary gearboxes, generator housings, and engine covers in MSR or RZ5, with RZ5 being frequently used.

 

Magnesium alloy die-casting is also employed in aerospace applications, such as ZW3 alloy used for critical gearbox parts in helicopters and aircraft wheels. Additionally, magnesium alloy die-castings are used in aerospace engine applications. In the future, magnesium alloy die-castings are likely to see broader use in high-temperature applications.



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