CNC Die Casting Molds

CNC Die Casting Engine Processing Shell Body / Die Casting Molds

 

Die casting

Die casting is a metal casting process that is characterized by forcing molten metal under high pressure into a mold cavity. The mold cavity is

created using two hardened tool steel dies which have been machined into shape and work similarly to an injection mold during the process.

Most die castings are made from non-ferrous metals, specifically zinc, copper, aluminum, magnesium, lead, pewter and tin-based alloys. Depending

on the type of metal being cast, a hot- or cold-chamber machine is used.

The casting equipment and the metal dies represent large capital costs and this tends to limit the process to high-volume production. Manufacture of

parts using die casting is relatively simple, involving only four main steps, which keeps the incremental cost per item low. It is especially suited for a

large quantity of small- to medium-sized castings, which is why die casting produces more castings than any other casting process.[1] Die castings

are characterized by a very good surface finish (by casting standards) and dimensional consistency.

Two variants are pore-free die casting, which is used to eliminate gas porosity defects; and direct injection die casting, which is used with zinc

castings to reduce scrap and increase yield.

Hot-chamber die casting

Hot-chamber die casting, also known as gooseneck machines, rely upon a pool of molten metal to feed the die. At the beginning of the cycle the

piston of the machine is retracted, which allows the molten metal to fill the "gooseneck". The pneumatic- or hydraulic-powered piston then forces this

metal out of the gooseneck into the die. The advantages of this system include fast cycle times (approximately 15 cycles a minute) and the

convenience of melting the metal in the casting machine. The disadvantages of this system are that it is limited to use with low-melting point metals

and that aluminium cannot be used because it picks up some of the iron while in the molten pool. Therefore, hot-chamber machines are primarily

ued with zinc-, tin-, and lead-based alloys.

 

Our Main Services:

1. Plastic molds:

Hot runner mold, precision mold, over mold, two-shot mold, unscrewing mold, multi-cavity mold, IML/IMI mold, Stack mold, Die-casting mold, etc.

90% molds exported to North America, South American, Europe and Australia.

2. Injection Molding:

We have rich experience in molding various engineering grade resins:

ABS, PC, PC+GF, PC/ABS, PBT, PA6+GF, PA66+GF, PPS, PU, PP, PE, TPE, TPU, LCP, Ultem, etc.

3. One Stop Services

Based on our strong engineering capability,GOM provide a full turnkey solution for customers bespoke plastic

injection moulding needs inclusive of design, development, mould tooling, production and post moulding