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Designing components for MIM is more akin to designing for plastic injection molding than to designing for other metal-forming processes.
Designing components for MIM is more akin to designing for plastic injection molding than to designing for other metal-forming processes.
Powder injection shape technical characteristics
MIM as a manufacturing quality precision components near net shape technology, and the processing methods compared with conventional superiority. MIM can create many of the complex shape of the parts : such as external cutting shafts, the thread, taper, surface, cross-boundary Kong, blind Kong, Taiwan and four key sales, strengthen tendons boards, and so on the surface roll-with the above characteristics are not parts with conventional powder metallurgy methods. Since the adoption of MIM almost no longer manufactured parts for machines processing, reduce material consumption, resulting in the production of complex shape parts for more than a certain number of values, MIM will be more economical than aircraft processing methods.
Parameters |
>Investment casting |
MIM |
Minimum aperture diameter |
2mm |
0.4mm |
Maximum depth of aperture¢ 2mm |
2mm |
20mm |
Minimum wall thickness |
2mm |
<1mm |
Maximum wall thickness |
unlimited |
10mm |
¢ 4mm tolerance |
±0.2mm |
±0.06mm |
Surface finish(Ra) |
5μm |
1μm |
Powder injection shape advantages :
Like the production of plastic products, a true production complex shape metal, ceramic, and other parts components products of low-cost, good smoothness and high accuracy (+0.3%~+0.1%), the general follow-up processing products without strength, hardness, extension rate Mechanics high-performance, good resistance to abrasion and fatigue resistance, the organization distributed high utilization of raw materials, production of a high degree of automation, processes simple, clean continuous mass production, the production process for clean production processes
MIM Material
Material |
Composition |
Low alloy steel |
Fe-2Ni, Fe-8Ni |
Stainless steel |
316L, 17-4-PH |
Tool steel |
42CrMo4, M2 |
Carbide |
WC-Co(6%) |
Ceramics |
Al203, ZrO2, SiO2 |
Tungsten alloy |
W-Ni-Fe, W-Ni-Cu, W-Cu |
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