CNC Milling of an Aluminum Heatsink

A Texas electronics manufacturer needed a short run of aluminum heatsinks manufactured to custom specifications. The heatsink was precision CNC machining on our HAAS CNC mill, and was composed of 6061-T6 aluminum. The machining process required profiling, drilling, tapping, and countersinking, and assembly required the installation of Helicoil inserts.

The finished part measured 9.187″ in length, 5.395″ in width, and .680″ in height, and was ffinished with a chemical conversion coating and black anodize. We also provided stenciling of the part number onto the heatsink.

For more information on this precision CNC milled anodized aluminum heatsink, see the table below.

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Highlights of this Precision CNC Milled Aluminum Project

Product Description: This heatsink is used within an electronic application.

Precision CNC Milling Capabilities Applied/Processes

Primary:
CNC Milling
Profiling
Drilling
Tapping
Countersinking

Helicoil Inserts
Secondary:
Anodizing
Chemical Conversion Coating
Stenciling
Stencil Part Number

Equipment Used to Manufacture Part: HAAS Mill

Overall Part Dimensions: Length: 9.187″
Width: 5.395″
Height: .680″

Tightest Tolerances

+.003″/-.000″
Flatness of .005

True Position of .014″
Ø.034″ Hole +.001″/-.000″

Material Used: 6061-T6 Aluminum

Material Finish: Black Anodized
Chemical Conversion Coating

Industry for Use: Industrial Electronics

Quantity: 30 units

Delivery Time: 4 Weeks

Delivery Location: Texas

Standards Met

Customer supplied print
Anodize:
MIL-A-8625 Type III Class 2
NADCAP Approved

Chemical Conversion Coating: MIL-C-5541 Class 3
Stenciling: MIL-STD-130
Inspection: AS9102, First Article Inspection

Product Name: Aluminum Heat Sink