Machined aluminium parts start from one of two places: an extruded blank, where the section already puts metal where the part needs it, or a billet, where the shape is cut out of solid stock. The choice changes cost, rigidity and lead time more than the machining itself. At this plant extrusion and machining sit in the same building, so a part can be extruded, cut, machined to ±0.05 mm and anodized without leaving the site.
| Starting point | Where it wins | Where it stops |
|---|---|---|
| Extruded blank | Long parts, constant section, features that run along the length; metal only where the design needs it; low cost per kilogram | Needs a die; section changes cost money; wall cannot go below 0.8 mm |
| Billet | Small quantities, pockets and steps in every direction, parts with no constant section | More material removed, longer cycle time, higher cost per part |
Yes, and that is the normal route: the profile is extruded to the section, cut to length, then drilled, milled, tapped and anodized. Machining after extrusion is cheaper than machining the whole shape from billet whenever the section is constant.
No. Extrusion gives a constant section; anything that changes along the length, crosses the section or needs a precision bore is machined afterwards. The saving comes from starting with the right section, not from avoiding the machine.
±0.05 mm on machined features, checked against the drawing. Extruded dimensions follow GB/T 5237 high precision, and the two are inspected separately because they come from different processes.
Yes, from one piece, usually from billet or from an existing section. Prototypes are quoted separately from series parts because the setup is not amortised.
Yes, AA10 or AA15, in silver, champagne, bronze, black or gold. Tell us which faces must stay bare or masked, because anodizing changes bores and fits by 10–15 µm per face.
Related pages: CNC machining of aluminum profiles, machined aluminum parts for robotics, and machined housings for solar inverters. For the cast alternative, see extruded versus die-cast housings.
LinkedAlu extrudes in Foshan on 26 presses (500–5000 MT), 100,000 t/year since 2005, FOB Shenzhen or Guangzhou. Extruded profiles start at 500 kg per section; machined parts are quoted per piece.
3 profiles listed
Extruded aluminum solar inverter housings and optimizer brackets, machined in a single fixture — ±0.05 mm hole position, 0.05 mm…
In-house CNC deep processing that turns extruded aluminum profiles into finished, bolt-ready components, with published…
CNC machined aluminum components for robots, AGVs, linear actuators and AI vision systems — joint housings, base plates, camera…