Offshore Sourcing for Metal Castings
|Sun Fast provides offshore sourcing for custom metal castings.|
Sun Fast provides offshore services for custom metal castings. We offer strategic sourcing for sand casting, precision casting, and die casting methods. No matter what casting method your project requires, our offshore partners consistently deliver high quality cast metal products that meet or exceed expectations.
Sand casting can be used to create parts from steel, stainless steel, gray iron, malleable iron, and ductile iron. Also known as sand molded casting, this process uses sand—usually mixed with clay or another bonding agent—as the mold material. Roughly 70 percent of all metal castings are created using this method.
Mold cavities for sand casting are created by compacting the sand mixture around an existing part, model, or pattern inside a multi-part molding box, called a casting flask. If needed cavities can also be carved directly into the sand. After the top and bottom halves of the casting flask are assembled and the sand is dried, molten metal is then poured into the mold and left to cool. The casting flask is then removed and the sand is cleared away, leaving the completed part.
Sand Casting Advantages
Sand casting is a very popular method of casting for varied reasons, some of which include:
- Low cost
- Ability to cast very large parts
- Both ferrous & non-ferrous metals can be cast
- Low post-casting tooling cost
Sand casting can be used to produce a wide range of custom components, including large, heavy, and/or complex parts.
In precision casting, parts can be cast from steel and stainless steel. Often referred to as investment casting or lost wax casting, this process uses specialized wax materials to create molds. The wax is then encased in a ceramic shell that creates an exact—and far more durable—replica of the wax mold. The wax is melted and removed, and the ceramic mold is used to produce the cast parts.
Investment casting allows for more intricate and complex forms than other casting methods, and can be used to produce parts that would be difficult or impossible to create through other processes (machining, fabrication, etc.). It tends to yield parts and components with very good surface finishes, which can reduce or eliminate the need for additional finishing work.
Precision Casting Advantages
Precision casting offers many distinct advantages over other casting methods, some of which include:
- High dimensional accuracy
- Excellent surface finish
- Able to cast extremely intricate parts
- No flash or parting lines
- Almost any metal can be cast
Die casting can be used to produce parts from zinc and aluminum, and is ideal for smaller pieces and more intricate part designs. Molds for die casting are created from hardened tool steel which is machined into the desired shape. Like those used in sand casting, die casting molds are built in two halves, which are separated after casting to remove the resulting part(s).
Molten metal is forced into the mold cavities under high pressure (up to 25,000 psi or greater), and this pressure is maintained until the casting cools and solidifies. High pressure is necessary to fill the mold quickly, before any part of the casting solidifies. This process yields smooth part surfaces and can produce parts with thinner walls than other casting methods allow.
Die Casting Advantages
Die casting is an effective, cost-effective process offering a larger range of shapes and components than any other manufacturing technique. Engineers can gain many advantages by specifying die cast parts, some of the benefits of die casting include:
- Strength & weight
- Multiple finishing techniques
- High-speed production
- Dimensional accuracy & stability
- Simplified assembly
Why Choose Sun Fast for Metal Castings?
Sun Fast offers complete, turnkey offshore sourcing for your metal casting project needs. This includes the manufacturing process of the raw casting material, additional precision machining services, plating, powder coating, and E-coating services. Working from your designs, we will deliver custom metal castings that meet or exceed your expectations.