FAQ

Which metals can be die cast?

Mainly aluminum, zinc and magnesium alloys. Aluminum and larger magnesium parts are cast on cold chamber machines, zinc on hot chamber machines.

Do you make the die and the castings?

Yes. We design and build the die, run trials and supply castings, machined and finished as required.

What files do you need for a quotation?

A 3D model (STEP or IGES), a 2D drawing with tolerances, the alloy, the annual volume and any machining, finishing or testing requirements.

Do you review the design before quoting?

Yes. We check wall thickness, draft, radii, undercuts, gating and machining datums, and send DFM comments with the quotation.

Aluminum or zinc: which should I choose?

Aluminum for lighter and larger parts and for heat sinks; zinc for small, detailed parts with close dimensions and plated finishes.

Who owns the die?

Normally the customer who pays for it. Ownership, maintenance and storage terms are written into the quotation or tooling agreement.

Can die castings be machined?

Yes. Sealing faces, bores and threads are typically CNC machined after casting, with small allowances so porosity is not opened.

What finishes are available?

Powder coating, painting, E-coating, polishing and electroplating on zinc are common. Anodizing is limited on high-silicon die casting alloys.

What causes porosity in die castings?

Mainly air and lubricant gas trapped during the very fast fill, and shrinkage in thick sections. Part design, gating, venting and process control keep it small and away from critical faces.

Do you also offer gravity and sand casting?

Yes, for parts that need heat treatment, thicker sections or lower volumes.

Where are you located?

Our contact address is RM1223, 12F, No.1, Fuji Bldg, No. 6018 Longgang RD., Longgang Dist., Shenzhen, China.