Manufacturability
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Sintering Supports
To avoid distortion of parts, ideal MIM designs have a large flat surface or with several component features that have a common plane allowing for the use of standard or flat debinding and sintering supports.
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Draft
This is a design aspect where MIM often differs from other injecting molding requirements. Some MIM components can be designed with little or no draft.
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Fillets & Radii
Fillets and radii provide our design engineers with design advantages in MIM which are not readily available in other metalworking processes.
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Ribs & Webs
Our designers use ribs and webs to increase your component strength, and minimize the effects of dimensional variation.
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Gating
Our designers carefully consider the impact of the gate location on a component during the design phase, carefully balancing manufacturability, part function, dimensional control and aesthetics.
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Sink & Knitlines
We work with our customers to try to minimize sink and knitlines during our DFM process.
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Minimum & Maximum Wall Thickness
The minimum or maximum cross sectional wall thickness on any part is very much dependent on the overall part size and design.
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Flash & Witness Lines
When designing a MIM component our designers take both witness lines and areas of potential flash into consideration.
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Interchangeable Mold Inserts
Multiple parts which have only minor variations between them may be produced using interchangeable mold inserts, minimizing the tooling fabrication needed and providing tooling cost savings.
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Dimensional Tolerances
As a starting basis, MIM is capable of as-sintered tolerances of +/-0.3% of nominal (i.e. 1.000” +/-.003”). To minimize the cost of secondary operations, the general tolerance guidelines should be applied.
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