Custom Die Casting Services

The hot chamber and cold chamber die casting processes each possess distinct qualities.

Hot chamber die casting serves as an efficient option for tin, zinc, and alloys characterized by lower melting points. Conversely, the cold chamber die casting process is well-suited for metals with high melting points and corrosive properties.

Cold Chamber Die Casting

In cold chamber die casting, machines are utilized for aluminum or zinc alloys with high melting points or corrosive properties. This method involves transferring metal by ladle, either manually or automatically, to the shot sleeve. The injection piston then compels the metal into the die. This process minimizes the contact time between the hot metal and the injector components, thereby contributing to an extended operating lifespan.

Hot Chamber Die Casting

Hot chamber die casting machines are predominantly used for zinc alloys, copper, lead, and other low melting point alloys. Hot chamber die casting facilitates faster cycling production, intricate cast-in detailing, reduced porosity, and increased waste reduction, while also offering extended service life due to the lower melting points of the alloys.

Metals containing iron, such as carbon steel, alloy steel, and stainless steel, have the potential to rust. While it is feasible to die cast these metals, their tendency to rust makes it relatively rare.

Non-ferrous metals like aluminum and copper hold minimal to no iron content, thus preventing rust formation. However, these metals can still corrode, with susceptibility to corrosion dependent on the specific working environment.

There is a wide array of metals and alloys suitable for die casting projects. Commonly utilized metals include zinc, aluminum, and magnesium. Additionally, copper, brass, tin, and lead can be chosen for custom casting parts. However, the selection of the best metal can be challenging as each alloy possesses distinctive physical characteristics, as well as advantages and disadvantages.

If the task of selecting the optimal metal presents a challenge, the assistance of a custom die casting parts manufacturer, such as Runsom Precision, can be invaluable.

Our expertise extends to CNC machining additional features onto cast parts, including engraving and minor details.

Die-casting stands as the ideal choice for crafting non-ferrous metal products in a relatively short turnaround. With the use of reusable molds, this process guarantees rapid production. It also offers versatility in developing products of diverse sizes and shapes.

However, die casting may not be the optimal solution for every project. One drawback of die casting is its high mold cost. At Runsom Precision, we provide an extensive array of metal casting services, including:

Investment casting
Rapid prototype casting
Sand casting
Lost foam casting
Lost wax casting
Centrifugal casting
Permanent mold casting

Certain projects might find metal stamping or forging more advantageous than die casting. The selection relies on numerous factors, such as the size, mechanical properties, and geometry of the part.

Advantages of Die Catsing

1. Complex Geometry
   Die casting enables the reliable production of custom parts with intricate geometry and thin walls, ensuring durability and dimensional stability.
2. Strength
   The absence of welding in the manufacture of die-cast parts means that their strength is determined by the material itself. Consequently, metal die-cast parts exhibit greater strength than plastic injections, resulting in a longer lifespan.
3. Dimensional Accuracy and Stability
   When molten metal is injected into a die, it maintains its shape and internal dimensions, ensuring that each finished part fills the mold, resulting in accuracy and consistency across all parts.
4. Multiple Finishes Available
   Die-cast parts can be easily plated and finished with either a textured or smooth exterior. Additionally, these finishes can protect from corrosion while enhancing the aesthetic appearance.
5. Simplified Assembly
   For parts requiring assembly with other components, studs can be attached or holes drilled to facilitate fastening.

Disadvantages of Die Catsing

1. Tooling Cost
   Although the per-piece cost of die-cast parts is relatively low, the initial investment required for tooling dies and maintenance costs is considerable.
2. Not Suitable for Low Quantities
   Due to the high upfront tooling costs, die casting is not cost-effective for low-volume production runs. It is recommended to consider die casting only for quantities exceeding 1000 units.
3. Lead Times
   The various preliminary steps, such as addressing DFM concerns, tool design, tool manufacturing, and sample creation, contribute to longer lead times, often spanning several weeks before production commencement. As a result, die casting is considered one of the slower manufacturing processes to ramp up compared to others.

Our team of experts will closely collaborate with you throughout the entire process, offering recommendations and options to ensure the best possible turnaround while meeting your unique requirements.