What does powder metallurgy mean?

What does powder metallurgy mean?

What does powder metallurgy mean? Powder metallurgy refers to the process technology of manufacturing metal materials, composite materials and various types of products by taking metal powders or using metal powders (or mixtures of metal powders and non-metallic powders) as raw materials, forming and sintering. Powder metallurgy has unique chemical composition and mechanical and physical properties, which can not be obtained by traditional melting and casting methods. Powder metallurgy technology can be used to directly produce porous, semi dense or fully dense materials and products, such as oil-bearing bearings, gears, cams, guide rods, tools, etc. It is a kind of less or no cutting technology.

Powder metallurgy planetary gear

Powder metallurgy technology can easily realize a variety of types of composites and give full play to the respective characteristics of each component material. It is a low-cost technology to produce high-performance metal matrix and ceramic composites. It can greatly reduce the segregation of alloy components and eliminate the coarse and uneven casting structure. It plays an important role in preparing high-performance rare earth permanent magnetic materials, rare earth hydrogen storage materials, rare earth luminescent materials, rare earth catalysts, high temperature superconducting materials, new metal materials (such as Al Li alloys, heat-resistant Al alloys, superalloys, powder corrosion resistant stainless steels, powder high-speed steels, intermetallic compound high-temperature structural materials, etc.).

Powder metallurgy method can ensure the correctness and uniformity of material composition ratio. Therefore, most refractory metals and their compounds, false alloys, and porous materials can only be manufactured by powder metallurgy method, such as our common machining tools, hardware abrasives, etc. It is very suitable for the production of many products with the same shape, especially the products with high processing costs such as gears. If powder metallurgy is used for manufacturing, the production cost can be greatly reduced.

Powder metallurgy products are far beyond the scope of materials and metallurgy, and are often interdisciplinary technologies (materials and metallurgy, machinery and mechanics, etc.). In particular, modern metal powder 3D printing integrates mechanical engineering, CAD, reverse engineering technology, layered manufacturing technology, numerical control technology, material science, and laser technology, making powder metallurgy product technology a modern comprehensive technology across more disciplines.