A380 is injected into a die carrying the pin pattern as square pockets. The pins fill last, so the die is vented at the pin tips and the overflow runs along the field edge. After ejection the pin tips and the reverse face are machined flat in one clamping, the four holes are drilled, and the part ships as-cast - the casting skin is left on because it is the hardest surface the part will have. The other pin-field parts in the die casting heat sink range leave the same cast skin in place. Pin height and pitch limits are covered in the die cast fin design rules.
No core pins to wear or bend.
Machined in the same clamping as the tips.
Drilled after casting, position from the face.
Stiffness without extra base thickness.
Pins and base are one casting.
| Base Material | A380 aluminum, high-pressure die casting, as-cast |
|---|---|
| Pin Shape | Square section, cast in the die |
| Pin Field | Grid, flat tops machined |
| Reverse | Flat mounting face |
| Fixing | 4 through holes |
| Ribs | 2 stiffening ribs on the reverse |
| Finish | As-cast |
| 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 pin field is the last region of the cavity to fill and the first to show a short shot. Pin height, pin pitch and the position of the gate are decided together; quoting a pin height without the field layout is guessing.
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.
Cast pin grids are used where the airflow direction is not fixed at design time:
LED drivers
Power supplies
Motor controllers
Telecom line cards
Battery chargers
Send the board footprint, the heat load, the fixing pattern and the airflow you can guarantee. KingKa sets the pin pitch and height against the die rules - too tall and the pins cannot fill, too tight and the air will not pass - then machines the mounting face to your flatness callout. The round version of the same field is the tapered round pin 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 pin height, the pitch and the field outline as one drawing. Those three decide whether the die needs a vent at the tips or a different gate position, and that changes the tool price.
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.
