Knowra Powder metallurgy Powder metallurgy Powder metallurgy makes components from metal powders by shaping them and consolidating them through heat, pressure, or both. It enables near-net-shape parts and controlled porosity.
Metal powder : Finely divided metal particles used as feedstock for manufacturing and other processes. Particle composition, size, and shape determine how powder behaves during shaping and consolidation.
Particle size distribution : The range and relative abundance of particle sizes in a powder sample. A suitable size distribution helps particles pack efficiently during compaction.
Sintered components : Metal parts made by compacting powder and bonding its particles through sintering. Automotive gears and structural parts are common products of conventional powder metallurgy.
Casting : A manufacturing process that forms a part by pouring liquid material into a mold and solidifying it. Unlike conventional powder metallurgy, casting shapes metal from a liquid melt.
Near-net-shape manufacturing : Manufacturing parts close to their final geometry, minimizing subsequent material removal. Powder compaction can form complex outlines with less machining than machining from solid stock.
Powder compaction : The shaping of loose powder by applying pressure, usually inside a die. Compaction gives powder metallurgy parts their initial shape and handling strength.
Particle morphology : The shape and surface features of particles in a powder. Particle shape influences flow, packing, and the strength of a compact.
Porous metal : Metal containing interconnected or isolated pores as a designed structural feature. Powder metallurgy can retain pores for filtration, fluid storage, or self-lubrication.
Forging : A process that shapes metal through compressive forces, often while the metal is hot. Forging typically starts with solid stock and can produce different density and mechanical properties.
Material efficiency : The proportion of input material retained in a useful finished product. Powder metallurgy can reduce scrap by shaping near the component's final dimensions.
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