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Die Casting Services

We have access to a comprehensive range of machinery and tools to support die casting of simple and complex shapes that some other manufacturers find challenging. With many processes under one roof, we manufacture various products and offer assembly services. We offer the following technologies: Investment Casting, Gravity Casting, Die Casting, and Sand Casting.

Advanced Die Casting Services Company and Manufacturer

As a professional die-casting enterprise, elimold has been engaged in precision die-casting services for many years, specializing in manufacturing high-quality die-casting parts through advanced machinery and technology, as well as providing tooling mold manufacturing, CNC machining, and various surface treatments. We grow rapidly with strict quality control, efficient production, professional engineering, prompt delivery, and competitive prices.

We have a complete facility to develop innovative mold designs and manufacture molds and castings (metal casting products). Automated machines can reduce labor and increase the productivity of die castings. Professional machinists and well-trained staff will monitor the complete manufacturing process and control variables. Trust us to provide economical solutions for your projects in many industries.

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Casting, Machining and Finishing

At elimold Die Casting, we produce complex, high-quality aluminium and zinc die castings for various industries. We have a large manufacturing space capable of large castings and CNC machining. We have modern casting machines ranging in size from 500 tons to 1,000 tons and can machine, finish and assemble our castings to meet the most challenging design requirements. Our experience and technology can produce complex geometries and stringent porosity requirements using various casting alloys. Elimold’s rapidly growing CNC machining department uses the latest technology to machine features to very tight tolerances.

elimold’s mission is to create high-quality, competitively priced products that are delivered on time and exceed all expectations.

QUALITY DIE CASTING SERVICES, AFFORDABLE RATES

Elimold through our global supply chain, we simplify your ability to purchase die casting solutions overseas. And the great price-to-price ratio that only Chinese manufacturers can produce.

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Die Casting Types Available from elimold

Elimold partners with die casters that utilize the latest die casting technology to deliver high-quality, on-demand parts. Our offering focuses on the two leading types of die casting: hot chamber casting and cold chamber casting. Both types can produce parts with complex geometry, close tolerances, and robust mechanical properties.

Also known as gooseneck casting, the hot chamber die casting process is the most popular die casting process. It is optimal for working with lower melting point alloys such as zinc, magnesium, and lead. A holding pot is filled with metal and heated with hot chamber die casting until molten by an attached or built-in furnace. A feature of the hot chamber system referred to as the gooseneck forms a holding chamber within the pot and a nozzle-like pathway that connects to the injection cavity of the fixed half of the die. A plunger that sits above the chamber allows it to fill with molten metal from the holding pot. When the chamber is loaded, the plunger lowers and forces molten material up the gooseneck into the die cavity. The mold is held together under pressure while the metal cools and solidifies in the mold. Once the metal is cool enough, the dies open, and the casted piece ejects via ejector pins.

With the cold chamber die casting process, the chamber remains at room temperature and does not have a holding pot of molten metal. Metal is melted in a separate furnace and deposited into the shot chamber through a pouring hole by hand with a ladle. In cold chamber die casting, the mold is connected directly to the shot chamber and does not utilize a plunger system. Instead, a ram forces molten metal into the mold and held under high pressure while the metal solidifies. This type of die casting is suitable for comparatively higher melting temperature materials such as aluminum.

Several different metal materials are available to choose from when manufacturing using die casting. The material you choose will depend on your intended use for the product. For instance, cast aluminum parts are common in aerospace or automotive applications where corrosion resistance and weight reduction are essential factors. You can learn more about the main types of die casting materials we offer in the sections below. If you have a specific material request, just let us know.

Aluminum alloys are the most widely used for die cast parts. Aluminum die casting suppliers benefit from the total recyclability of the material and its ease of use. Due to the comparatively higher melting point, aluminum die casting may require a cold chamber casting process. Engineers use cast aluminum parts primarily for their great strength-to-weight ratios, dimensional stability, and diverse finishing options. Some of the other common characteristics of cast aluminum alloys are:

Withstand high operating temperatures

Corrosion Resistance

Good stiffness

High thermal and electrical conductivity

Engineers and designers can choose from various alloys for their aluminum casting parts. elimold offers the most popular aluminum die casting alloys, including:

A356.0
A360.0
A380.0
A383.0 (ADC12)
A413.0

Zinc is the easiest to cast material among the die casting metals and is typically used in hot chamber processes. Molten zinc has exceptional casting fluidity and a lower melting point. Its strength and stiffness allow it to produce parts with thinner walls and highly detailed features and maintain tight tolerances. The low melting point of die casting zinc alloys means the casted parts cool off and solidify more quickly, which results in the fastest production rates of the die casting materials. Zinc is an all-around well-performing material due to its balance of mechanical and physical characteristics, which include:

Impact strength
High hardness
Great stability
High-quality surface finish and easily plated
Low melting point

elimold offers the most popular types of Zamak and ZA die casting zinc alloys. More specifically, those alloys include:

Zamak 2 (ZA-2)
Zamak 3 (ZA-3)

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Available Die Casting Finishes

Zinc and zinc-aluminum parts can be left as-cast and retain good corrosion resistance. Aluminum parts must be coated to achieve corrosion resistance. Cast parts are typically broken away from the casting sprue, leaving rough marks at the gate locations. Most castings will also have visible marks left by the ejector pins. The surface finish for as-cast zinc alloys is commonly 16-64 microinch Ra.

The part surface is left with a smooth, matte appearance.

Aluminum is typically anodized. Type II anodizing creates a corrosion-resistant oxide finish. Although suppliers can anodize parts in different colors, the surface of a die cast part does not facilitate a cosmetic finish with anodizing. Type III is a thicker finish and creates a wear-resistant layer in addition to the corrosion resistance seen with Type II. Anodized coatings are not electrically conductive.

All die cast parts can be powder coated. This process is where powdered paint is electrostatically sprayed onto a part, then baked in an oven. Powder coating creates a strong, wear- and corrosion-resistant layer that is more durable than standard wet painting methods. A wide variety of colors are available to create the desired aesthetic.

All die cast parts can be wet painted in a wide variety of paint formulations and colors.

Die cast parts can be plated with electroless nickel, nickel, brass, tin, chrome, chromate, Teflon, silver and gold.

Suppliers can apply a chromate conversion coat to protect aluminum from corrosion and improve the adhesion of paints and primers. Chemical film conversion coatings are electrically conductive.

Die cast materials are subjected to vibratory media tumbling to remove sharp-edged and smooth surfaces.

Don’t see the finish you need? Submit an RFQ, and our partner shops will look into a finishing process for you.

Is die casting right for your product?

The die casting process is the fastest option for producing exact, non-ferrous metal products. Because this method utilizes reusable molds, it offers high-speed production of parts and has the flexibility to create a wider range of shapes and sizes than other casting methods.

Die casting can be completely automated, and its reusable molds also make it an affordable option. This technique is used to manufacture commercial, consumer, and industrial products. Die casting is ideal for medium-sized parts with more complex structures.

Common Products & Use Cases of Die-casting

Advantages of Die Casting

Die casting can reliably produce metal parts with thin walls and challenging geometry that is durable and dimensionally stable.

Metal die casting parts are typically stronger than plastic injection molded parts and more resistant to high temperatures. Metals such as aluminum offer exceptional strength-to-weight ratios.

Die casting offers typical tolerances ranging from +/-0.003″ – 0.005″ per inch but can go as tight as +/- .001” depending on your specifications, part geometry, and material.

Metal finishers can produce cast parts with smooth or textured surfaces, paints, and plating finishes. Finishes can protect from corrosion and improve cosmetic appearance.

Disadvantages of Die Casting

While the per piece cost of die cast parts is relatively low, the tooling dies, and maintenance costs can require a high initial investment.

Due to the higher upfront tooling costs, die casting is not economical for low-volume runs. We recommend only considering die casting for quantities greater than 1000.

Before production, many steps must be accomplished first, often taking multiple weeks to execute. These steps include addressing DFM concerns, tool design, manufacturing the tools, and creating samples. The upfront checks and validations make die casting one of the slower manufacturing processes to ramp up compared to others.

 

Our team of experts will be working with you closely throughout the process and offer suggestions and options to provide you with the best possible turnaround while working to meet your unique needs.

Why choose elimold for your custom metal fabrication and custom die casting needs?

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We produce high-quality custom metal products and have established a vast network of partners worldwide to source the finest materials.

We provide fast solutions at competitive prices and pride ourselves on:

  1. Quality management process
  2. Cooperation and Innovation
  3. Professional manufacturing knowledge
  4. Solutions for various industries
  5. Our quality management system ensures that your parts meet the standards of your industry. We offer a pre-production part approval process (PPAP) and pre-production quality planning. Our production technology also involves process control.

In addition to these steps, we work with you from the start to help eliminate design-phase issues. Our engineers work with you to create more efficient parts.

The elimold Advantage

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