Fins are cut from aluminum strip to 0.5-1.0 mm, stacked on a fixed pitch, and inserted into machined grooves in a thin base plate with thermal epoxy. The stack is cured under pressure, the base face is fly-cut flat, and the core is deburred and cleaned. No holes are added unless the drawing asks for them.
Thinner than an extrusion can be pulled.
Dense surface without choking the airflow.
Core fits an existing duct envelope.
Customer adds housing, fan and hardware.
Controlled by groove depth and cure load.
| Base Material | Aluminum 6063 base with thin bonded aluminum fins |
|---|---|
| Fin Thickness | 0.5-1.0 mm |
| Fin Gap | 1.5-4 mm |
| Supply Form | Fin core, no mounting hardware |
| Base Thickness | 3-8 mm |
| 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.
A bonded core lives or dies on the bond line: groove depth plus cure pressure set it, and a thick line costs more thermal resistance than the extra fin count buys. Both are locked on the first article.
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.
Fin cores are used where the duct already exists:
Telecom cabinets
Inverter air ducts
LED and laser drivers
Server airflow modules
EV onboard chargers
Send the duct cross-section, the available height, the airflow (CFM or face velocity) and the base outline. KingKa returns a fin thickness and gap that fit the pressure budget, then bonds to that pitch.
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.
Tell us the duct, not just the wattage - a 1.5 mm gap only works if the fan can push through it, and the same core at 3 mm gap needs half the pressure.
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.
