ALUMINUM EXTRUSION · SECONDARY MACHINING
Aluminum Heat Sink Profile Case
A representative aluminum extrusion case linking heat sink profile design, die planning, CNC mounting features, surface finishing and final inspection.
Representative manufacturing application
The manufacturing challenge
The brief starts with the finished part and its assembly requirements. Process and inspection choices follow those requirements rather than a generic tolerance claim.
The proposed production route
- 01
Review the cross-section
Balance fin walls with the base, avoid fragile narrow features, and identify the face that will transfer heat. Die choice and trial criteria follow the approved section rather than an assumed stock profile.
- 02
Plan secondary features
Cut the extrusion to its finished length and machine the mounting face and hole pattern from a common datum. Keep enough allowance for the specified finish and any protected contact zone.
- 03
Inspect the finished component
Check straightness, profile dimensions, mounting-face condition, and hole position after the required downstream operations. Protect fin edges and visible surfaces in packaging.
What the inspection plan needs to protect
- Fin geometry and profile straightness after extrusion
- Mounting-face flatness and surface condition
- Hole pattern relative to the defined machining datum
- Finish coverage and protected thermal-contact areas
Outcome and engineering takeaway
A successful extrusion program is defined by the finished interface. Decide which features belong in the constant section and which are better made by secondary CNC operations.