Powder metallurgy manufacturing process is a science and technology that researches and manufactures various metal powders, and uses metal powders as raw materials to produce metal materials and products through compression molding, sintering in metallurg and necessary subsequent processing.
It is a mass production method that uses little or no cutting processing. It can produce metal structural partswith more complex shapes and high strength at a relatively low cost. It is a method for mass production of bearing self-lubricating parts at a low cost.
Common powder metal parts include: auto parts, gears, oil-impregnated bearings, engine parts.
Precision die casting For metals or alloys with relatively low melting points, precision casting can also form parts with three-dimensional complex shapes. But for refractory metals and alloys, hard alloys, ceramic powder injection molding, etc., they can do nothing, which is determined by the nature of precision casting. Moreover, it is very difficult to adopt precision casting for metal parts with small size, thin wall and large quantities.
Common casting parts:oil field parts series,vehicle parts series,motor parts sreies,equipment parts series.
Comparison of the characteristics of MIM powder metallurgy processing and precision casting:
1: Material
mim: unlimited
Precision casting: meltable
2: Minimum aperture
mim: 0.4mm
Precision casting: 2mm
3: Maximum depth of 2mm diameter blind hole
mim: 20mm
Precision casting: 2mm
4: Minimum wall thickness
mim: <1mm
Precision casting: 2mm
5: Maximum wall thickness
mim: 10mm
Precision casting: unlimited
6: Small size internal and external thread
mim: yes
Precision casting: difficult
7: 10mm diameter tolerance
mim: ±0.012mm
Precision casting: ±0.05mm
8: Surface roughness (Ra)
mim: 1~1.6μm
Precision casting: 3.2~5μm
9: Surface roughness
mim: fine crystal, uniform structure
Precision casting: dendrites, easy to segregate
10: Number o
Precision casting: restrictedf parts
mim: unlimited
Post time: Dec-20-2021