An AL1070 billet is forged at room temperature into a die that forms the cylindrical base wall and the radial fins together. The base bore is then machined to the socket diameter, the rim is faced, and the fin field is left as forged. Parts are cleaned and can be anodized or e-coated where the fixture needs it. The trade-off against a cut fin field is set out in cold forging vs skiving.
Drops into a round housing or lamp body.
Dense surface, forged not cut.
No joint between wall and fin.
Fits the holder, not just the outline.
No per-fin machining cost.
| Base Material | Aluminum 1070, cold forged |
|---|---|
| Base Form | Cylindrical wall, bore machined to socket |
| Fin Field | Radial, forged |
| Material | Aluminum 1070 |
| Finish | As-forged, anodized or e-coated |
| 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.
The bore and the fin ring are forged in the same stroke, so the wall thickness has to carry both the machining allowance for the bore and the stiffness the fins need at the root. That wall is the first number to agree.
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 cylindrical base suits fixtures that hold the sink by its wall:
Lamp and luminaire bodies
Spotlights and downlights
Camera and sensor housings
Round power modules
Handheld lighting
Send the socket or bore diameter, the wall height, the outer fin diameter and the fixing method. KingKa matches the die and machines the bore and rim to your drawing. The flat round version without a socket wall is the round cold forged heat sink.
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 socket diameter and the insertion depth first - the wall that carries them sets the fin root, and the fin count follows from the die.
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.
