The body is cold forged from AL1070 with a stock centre, then machined: the centre bore is bored and faced, the small holes around it are drilled, the octagonal flats are cut, and the base is faced flat. The pin field is left as forged so no cutting cost is added where the airflow is. The wall and fin rules that make a ring like this forgeable are in the forged aluminum design guide.
Wiring or optics pass through the part.
Retaining ring or twist-lock fixing.
Fin area recovered where the hole is not.
No cut per pin.
Sits flat against the lamp body.
| Base Material | Aluminum 1070, cold forged with a machined centre bore |
|---|---|
| Base | Octagonal, machined flats |
| Centre | Through bore plus drilled holes per drawing |
| Fin Field | Forged pins around the bore |
| Material | Aluminum 1070 |
| 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 centre bore removes the best spreading area in the part, so the ring left around it has to be thick enough to move heat sideways before it reaches the pins. That ring thickness is set on the drawing, not left to the die.
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 bored sink suits fixtures that need the centre clear:
Track and spotlight fixtures
Downlights with centre wiring
Stage and studio lighting
Architectural spot heads
Outdoor projector housings
Send the bore diameter, the ring of holes, the flat-to-flat size of the octagon and the fixing method. KingKa forges with stock in the centre and machines the bore pattern to your drawing. Where colour matters more than dielectric strength, the e-coated heat sink for LED takes the same body.
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.
Send the bore and the fixing flats together - the flats are cut after forging, and their position decides where the retaining ring can sit.
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.
