Why is the role of powder metallurgy so important

　　Powder metallurgy is not only a manufacturing technology, but also a solution that can achieve unique functions. Its core function can be summarized as follows:

　　1. Manufacturing complex shaped parts

　　This is its prominent role. Powder metallurgy, like "die pressing", can directly shape metal powder into products with complex structures and unique shapes in one go, avoiding a lot of tedious mechanical processing. It is particularly suitable for mass production of gears, flanged parts, etc.

　　2. Production of materials with special properties

　　By mixing different metal powders, powder metallurgy can create "alloys" that traditional melting methods cannot achieve:

　　Fake alloy: Combining metal and non-metal (such as copper graphite) together to manufacture self-lubricating bearings.

　　Composite materials: Combining materials with incompatible physical properties, such as tungsten and silver, to manufacture arc resistant electrical contacts.

　　3. Control the porosity of the material

　　This is powder metallurgy

　　The advantage. By controlling the process, porous materials can be precisely manufactured.

　　Typical product: Oil containing bearings. Pores can store lubricating oil, achieving lifelong self-lubricating and widely used in household appliances and automobiles.

　　Filter element: such as a filter, used to filter high temperature or corrosive liquids and gases.

　　4. Efficient use of materials, approaching "net forming"

　　Traditional mechanical processing generates a large amount of metal scrap. Powder metallurgy is the process of molding materials into molds, with a material utilization rate of over 95%, greatly reducing waste and in line with the concept of modern green manufacturing.

　　5. Processing high melting point metals

　　Metals such as tungsten, molybdenum, and tantalum have high melting points and are difficult to melt and cast using traditional methods. Powder metallurgy can be sintered at temperatures far below its melting point to bond it, making it the only feasible method for manufacturing products such as filaments and rocket nozzles.

　　In summary, the role of powder metallurgy is far more than just "making parts". It plays an irreplaceable key role in shaping complex structures, creating special properties, controlling pores, saving materials, and handling refractory metals.