Application of powder metallurgy in aerospace

Application of powder metallurgy in aerospace

Although the powder metallurgy process is mainly used to make mechanical parts, it has other uses, such as in the aerospace industry. What types of powder metallurgy materials will be mainly used in this special field? Answer:

One is porous and permeable powder metallurgy material, which is called porous material. Because of its good strength and plasticity, it can be used in high-temperature parts, such as high-temperature alloy felt tape for turbine jet engine blade tip seal ring, rocket engine injector panel, combustion chamber inner wall and throat, which are all used to sweat cool porous materials.

Another kind of powder metallurgy materials are alloys, including fully dense superalloys, aluminum alloys and titanium alloys formed by powder hot forming. In some modern aircraft, forged powder superalloy turbine disks and compressor disks have been used for engines.

The powder aluminum alloy is mainly used as structural materials of aircraft and engine; Due to the high strength of mechanically alloyed aluminum alloys and rapidly solidified powder aluminum alloys, the application scope of existing aluminum alloys is expanded and they are widely used in aircraft.

For the aircraft wheel brake device, its core is the brake pad, which also belongs to a powder metallurgy material in the aerospace field. In the process of aircraft landing, the load of brake pads is very large, the instantaneous temperature of the surface is also very high, and adhesion is not allowed, otherwise the tire will burst due to brake failure.

In order to meet the requirements of these special matters, a powder metallurgy brake pad is developed, which is made of iron powder or copper powder as the main component and non-metallic powder added to prevent friction and adhesion. Up to now, the vast majority of military and civil aircraft use powder metallurgy brake pads, and the amount is large, because each brake will wear.

Qinhuangdao Zhongwei Precision Machinery Co., Ltd. is a professional powder metallurgy manufacturer in Shenzhen. For 20 years, it has focused on pm powder metallurgy and powder metallurgy processing, providing stainless steel powder metallurgy, powder metallurgy bearings and powder metallurgy gear processing. zhongwei precision powder metallurgy is highly recognized by peers.