jauhemetallitöiden

Jauhemetallitöiden is a Finnish term that translates to "powder metallurgy" in English. It is a manufacturing process that involves producing metal components from metal powders. This technique offers several advantages over traditional metalworking methods, such as casting or machining.

The powder metallurgy process begins with the selection and preparation of metal powders. These powders can be made from various metals and alloys, including iron, steel, copper, aluminum, and stainless steel. The powders are then mixed with lubricants and binders to improve their flowability and compressibility.

Next, the mixed powder is compacted into the desired shape using a die and a press. This process, known as compaction, creates a "green compact" which has a defined shape but is still relatively fragile. The green compact is then subjected to a high-temperature process called sintering. During sintering, the metal particles fuse together, increasing the density and strength of the component. This occurs in a controlled atmosphere furnace to prevent oxidation.

Additional steps like sizing, coining, or infiltration may be employed to achieve precise dimensions, improve surface finish, or enhance material properties. Powder metallurgy is particularly well-suited for producing complex shapes, small parts, and components with unique material compositions that are difficult or impossible to make with other methods. Applications range from automotive parts and aerospace components to medical implants and cutting tools.