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Benefit:
1. Complete in one piece with no interface.
2. High aspect ratio 1: 100
3. Can forge aluminum alloy, pure aluminum and copper
4. No taper fin shape improves airflow smooth through
5. High material density increases thermal conductivity
6. Wide range geometry as die casting
7. Fin or pin forge only one time doesn't need cross cutting
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Overview Comparion
| Type |
Pros |
Cons |
Forging
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No interface
High density
High aspect ratio 1:100
Wide range geometry |
Tooling developing required 3 weeks |
| Extrusion |
Cost effective
No interface |
Lower aspect ratio 1:23
Tapered fin decrease air flow in-take |
| Die Casting |
Cost effective
Net shape
Less machining cost |
Poor density
Poor heat transfer performance
Lower aspect ratio 1:15 |
| Stamping/ Soldering |
Cost effective
High fin |
Too many interface
Un-reliable quality |
| Skiving |
High fin |
Potential crack risk between fin and base
Secondary operation required |
| Maching |
Fliexible applications |
Cost expensive
Long lead time |
Interface comparison
| Type |
Example |
Forge
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 |
| Extrusion |
 |
| Clamping |
 |
| Soldering |
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Density comparison
Forge
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Rating: Excellent |
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| Extrusion |
Rating: Good |
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| Die-Casting |
Rating: Fair |
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| Metal Injection Molding |
Rating: Fair |
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Technical Info.
