The base plate is machined from 6063 aluminum, fly-cut flat and drilled to the customer fixing pattern. Straight fins are cut to length from sheet or strip, inserted into machined grooves with thermal epoxy, and cured under load so the bond line stays thin. After bonding the contact face is machined again to remove any movement, and the part is left as-machined or anodized.
Hole array cut to the drawing, not a standard grid.
Fin height-to-gap ratio is not die-limited.
Several devices can share one flat face.
Flatness restored once the fins are on.
Epoxy bond line 3-5 W/m-K, kept thin.
| Base Material | Aluminum 6063 base with bonded aluminum fins |
|---|---|
| Base Thickness | 6-20 mm depending on hole pattern and spread |
| Fixing | Drilled and tapped hole array per drawing |
| Fin Height | Up to 80 mm without a die limit |
| Base CNC Tolerance | Milling / drilling / tapping down to +/-0.005 mm |
| Dimensional Inspection | Hexagon CMM +/-0.001 mm; 2.5D optical projector |
| Quality System | ISO 9001:2015; IATF 16949:2016 |
| Capacity | 60,000+ thermal parts per year |
| Lead Time | Samples typically 7-15 days; production scheduled to volume |
Note: values above are KingKa build options and verified capability; final geometry, holes and finish are confirmed against your drawing.
Bonding puts a polymer layer between fin and base, so the process is controlled by two things: groove depth (sets bond line thickness) and cure pressure. Both are fixed on the first article and held in production.
Design & CFD. 3D layout with CFD review sizes the fin field, pipe route and base thickness to the load and airflow.
Base machining. Plate, pockets and pipe channels are milled on 50+ CNC centers to +/-0.005 mm.
Fin and pipe joining. Fins skived, stacked or extruded; pipes pressed and soldered; the stack joined to the base by the process the design calls for.
Face fly-cutting. Contact face machined flat after joining so the part sits true on the device.
Final inspection. Hexagon CMM (+/-0.001 mm) and 2.5D projector check critical features; 4-stage IQC / IPQC / FQC.
Fin pitch and height - measured against the drawing before packing.
Base flatness - fly-cut face checked on the contact side.
CMM report - critical dimensions to +/-0.001 mm.
Joint inspection - solder or weld fillet checked along the stack feet.
Visual and batch audit - IQC / IPQC / FQC on every run.
A drilled, wide base suits assemblies with several heat sources on one plane:
Power supply assemblies
Motor drive stacks
Laser and RF power stages
Medical power units
Rack-mounted power shelves
Send the base outline, the hole pattern, the device footprints and the airflow direction. KingKa sets fin thickness, gap and height against the load, then machines the face and the holes to your drawing.
KingKa is a direct manufacturer with 16+ years in thermal production, 50+ CNC centers, in-house skiving, FSW and vacuum brazing, certified to ISO 9001:2015 and IATF 16949:2016.
Give the hole pattern with the drawing, not after - the drill program and the fin layout have to be planned together, because a fin cannot sit where a screw boss goes.
One supplier for the whole assembly. Base, fins, pipes and hardware under one quality system.
CFD before tooling. Design review catches a bad layout before metal is cut.
Prototype to volume. Samples in 7-15 days, production scheduled to forecast.
