Sintering In Powder Metallurgy Process
Read about the Powder Metallurgy also: Powder Metallurgy Process
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What is sintering process?
Sintering is the process of compacting and forming a solid mass of material by heat or pressure without melting it to the point of liquefaction. Sintering happens naturally in mineral deposits or as a manufacturing process used with metals, ceramics, plastics, and other materials.
Sintering In Powder Metallurgy Process:
Sintering is the process of heating the powder compacts in a furnace to a temperature close to the melting point of at least one of the major constituents in a controlled atmosphere.
It may also carry out under protective gas normally hydrogen or in a vacuum if the material tends to react with the protective gas. The heating causes the metal particles to sinter i.e cement the particles together in a cellular structure.
Sintering is performed to get final strength and hardness required in a finished product. the important governing variables of Sintering are temperature, time and sintering atmosphere. During sintering workpiece may changes. it may expand or contract. bronze tends to expand and iron and brass tend to contract.
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