many aluminum heat sinks are extruded, for sure not all. Buying at my scale I have seen more than a few heat sinks that are aluminum plate with fins in them like this:
Progressive Stamped Heat Sink Project Highlights | Product Description |
This Aluminum Heat Sink Fin Assembly was
developed for a Projection Television application |
| Capabilities Applied/Processes |
Development
- Develop a Cost Effective Heat Sink for
|
Maximum Heat Dissipation
Stamping
Custom Mechanical Assembly |
|
| Equipment Used to Manufacture Part |
Minster
Brown Boggs
|
Tooling
- Progressive Dies
- 8 Stations for Base Plates
- 10 Stations for Fins
|
|
| Overall Part Dimensions |
Base Plate:
Material Thickness: .065"
Length: 6.5"
Width: 3.5"
Height: 1.0"
Unfolded Fin
Length: 18" |
Folded Fin:
Material Thickness: .020"
Length: 5.75"
Width: 3.25"
Height: 1.50" |
|
| Tightest Tolerances |
Base Plate: ±.005"
Folded Fin: ±.00075" |
| Material Used |
Aluminum |
| Estimated Part Weight |
.35 lbs |
| Features/Benefits |
Custom Staking Method of Incompatible Material Thicknesses
- Eliminates Glue Seal & More Expensive Techniques
|
| In Process Testing/Inspection Performed |
In-Process Real-time SPC of Critical Dimensions
CMM Measurement
Strength Testing on Stakes
Cleanliness Sediment Testing
Dimensional Results Reporting
Control Plan
Process Flow Diagram |
Failure Mode and Effects Analysis (FMEA)
Gage Repeatability
Reproducibility Variable Data Report
Raw Material Chemical Composition Results
MSDS - Material Safety & Data Report/Substances
and Materials |
|
| Industry for Use |
Consumer Electronics |
| Volume |
600,000 Pieces |
| Packaging |
Special Pack Thermal-Formed Packing Trays
|
| Lead Time |
Tooling: 14 Weeks
Production Parts: 6 Weeks |
| Delivery Location |
Tenessee
Mexico |
| Standards Met |
Customer supplied print, 2D CAD Drawing |
| Product Name |
Heat Sink Fin Assembly |
I have also seen a lot of small heat sinks that are injection molded or cast.
Bookmarks