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What's Power Casting Molding ?

Power casting Molding is a procssing method for preparing metal parts, which uses metal power as raw material to manufacture parts with the required shape and performance through the molding and solidification process.

Power casting is widely used in fields such as automobiles ,aerospace, electronic equipment, engineering machinery; Producing various metal parts such as gears, connecting rods, bearings, brake pads.

Different Features of PM and MIM

Features PM MIM
Power Size(μm) >40 0.5-20
Cost Low High
Moldlife Low High
Density 80-85 95-99
Hardness(HRC) 45-48 53-55
Shape Simple Complex
Weight(g) >200 <20

Advantage of PM and MIN

  • Preparation of the vast majority of refractory metal,ceramic materials,nuclear materials and their compounds,pseudo alloys and porous materials can only be maded by power metallurgy methods.
  • Due to the powder metallurgy method being able to press into final size withou or with little need for subsequent mechanical processing, it can greatly save metal and reduce product cost. when using powder metallurgy method to manufacture products, the metal loss is only 1-5%,while when using general casting method to produce, the metal loss may reach 80%.
  • Due to powder metallurgy process don't melt materials during material production, it's not afraid of impurities brought by crucibles and deoxidizers. Sintering is generally carried out in a vacuum and reducsing atmosphere, and is not afraid of oxidation or any pollution to the material. Therefore, it is possible to produce high-purity materials.
  • Powder metallurgy method can ensure the correctness and uniformity of material composition ratio.
  • Powder metallurgy is suitable for producing a large number of products of the same shape, especially product with high processing costs such as gears, manufacturing using powder metallurgy can greatly reduce production costs.
  • Powder metallurgy method isn't only a method for producing material with certain special properties, but also a machining method with no or less chips . It has the advantanges of high productivity,high material utilization rate, saving machine tools and production area.However ,the cost of metal powders and molds in high, and the size and shape of the products are limited, resulting in poor toughness of the product.
  • The density of the product can be controlled, such as porous materials, high-density material, Fine grain size, uniform microstructure and no component segregation.
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