Custom Die Casting Services
High quality die cast metal parts.
Send Your Inquiry Today
Die Casting Technique
Die casting stands as a preferred manufacturing technique when it comes to creating a large quantity of complex metal components. It's highly sought after for its adaptability, dependability, and precision. This process significantly reduces or eliminates the additional steps usually required in metal part fabrication; however, it often involves post-machining to achieve more exacting tolerances critical for some functions. Die-cast items can also undergo various finishing techniques, just as those made through CNC machining.
Similar to injection molding, die casting involves creating a mold, known as a die, which may contain one or multiple cavities. This method is suitable for softer alloys like aluminum and zinc, attributed to their lower melting points. During die casting, molten metal is injected into the die cavity, where it forms the desired shape and solidifies before being removed. Depending on the specifics of the job, the die casting pressure can be adjusted to either low or high, with the metal being introduced through either a ladle or a plunger. This process is capable of producing intricate parts with tight tolerances at an extensive volume. Advanced die casting techniques, including squeeze casting and semi-solid metal casting, are utilized to manufacture high-quality components used across various industries. Typically, die casting services specialize in either aluminum or zinc, with aluminum accounting for the majority of die-cast products.
Our team of project managers and specialists personally assesses and quotes each die casting job to ensure it aligns with your specific requirements, providing a quick and efficient manufacturing solution. For further details on the process and what we offer, continue reading in the sections that follow.
TOPS Die Casting Service
Quote Preparation
Submit your documents to TOPS and discuss your project with us. Our team will collaborate with you to make sure that your requirements, timeline, and budget align with your project objectives. We'll deliver a Design for Manufacturability (DFM) report for your approval before we begin the tooling process.
Production Started
As soon as your project commences, we will construct a high-quality die. Following the completion of tooling, we will dispatch initial part samples, known as T1s, for your review and approval.
Mass Production
After you approve the samples, we'll proceed with full-scale production and ensure the parts are delivered to you. Relax knowing that TOPS is managing all supplier coordination and logistics from start to finish. The tooling is yours to keep, allowing for straight forward re-ordering whenever necessary to fulfill ongoing demand.
Types of Die Casting Offered by TOPS
TOPS collaborates with die casting experts who employ cutting-edge machines and technology to provide top-quality, timely parts across numerous industries. We specialize in the two primary methods of die casting: hot chamber casting and cold chamber casting. Both methods are capable of manufacturing parts with intricate designs, precise tolerances, and strong mechanical characteristics.
Hot Chamber Die Casting
Also known as gooseneck casting, hot chamber die casting is a widely used method, especially suitable for metals with lower melting points such as zinc, magnesium, and lead. In this process, a holding pot, either attached or integrated with a furnace, heats the metal until it's molten. The system's gooseneck acts as both a reservoir within the pot and a nozzle that leads to the die's injection cavity. Above this chamber sits a plunger, which, when the chamber is full of molten metal, pushes down, forcing the metal up through the gooseneck and into the die cavity. The mold stays closed under pressure as the metal cools and solidifies. Once the metal has sufficiently cooled, the dies open, and ejector pins help release the finished piece.
Cold Chamber Die Casting
In the cold chamber die casting process, unlike the hot chamber method, the chamber stays at ambient temperature and does not incorporate an integral holding pot for molten metal. Instead, the metal is melted in a separate furnace and manually ladled into the shot chamber through a pour hole. In this setup, the mold attaches directly to the shot chamber without the use of a gooseneck or plunger system. A ram forcefully injects the molten metal into the mold, where it's held under high pressure until it solidifies. Cold chamber die casting is particularly effective for metals with higher melting temperatures, like aluminum.
Die Cast Metal Materials
Various metal options are at your disposal for manufacturing through die casting, and the right choice hinges on the intended application of your product. For example, cast aluminum is frequently used in aerospace or automotive sectors due to its lightweight nature and resistance to corrosion. We invite you to explore more about the primary die casting materials available in the subsequent sections. If you have a particular material in mind, feel free to inform us of your specific needs!
Aluminum Die Casting
Aluminum alloys are the most popular choice for die-cast parts, largely due to their complete recyclability and user-friendly nature. Suppliers often prefer aluminum for die casting, although its relatively high melting point typically necessitates the use of a cold chamber casting process. Engineers favor cast aluminum parts primarily for their excellent strength-to-weight ratios, dimensional stability, and the variety of available finishing techniques. Other typical attributes of cast aluminum alloys include:
- Withstand high operating temperatures
- Corrosion Resistance
- Good strength
- High thermal and electrical conductivity
Engineers and designers have access to a broad selection of alloys for their aluminum casting projects. TOPS provides an array of the most widely used aluminum die casting alloys, encompassing:
- A360.0
- A380.0
- A383.0 (ADC12)
- A413.0
Zinc Die Casting
Zinc is recognized as the easiest material to cast among die casting metals, often utilized in hot chamber processes. It boasts excellent fluidity when molten and a lower melting point, enabling the production of parts with slender walls, intricate detailing, and precise tolerances. The quick cooling and solidification of zinc alloys, due to their low melting points, lead to the most rapid production cycles in die casting. Zinc is a versatile material, favored for its well-rounded mechanical and physical properties, which include:
- Impact strength
- High hardness
- Great stability
- High-quality surface finish and easily plated
- Low melting point
TOPS 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)
Applicable Die Casting Finishes
Ready To Get Started On Your Die Casting Quote?
Send Your Inquiry Today
Applications of Die Casting
Die casting's adaptability and capacity for high-volume production make it suitable for a wide array of applications and sectors. Typically, the process is ideal for small to medium-sized products that require complex geometries. This includes a variety of consumer and industrial goods, automotive components, aerospace parts, and medical device elements.
- Aerospace & Automotive Components
- Connector Housings
- Pumps and Plumbing Fixtures
- Outdoor Lighting
- Gears
- Appliances and Lighting
Die Casting Advantages and Disadvantages
Advantages of Die Casting
Complex Geometry
Die casting is adept at creating custom parts featuring intricate designs and thin walls, while maintaining durability and dimensional stability. This method is trusted for its ability to consistently produce complex geometries.
Strength
Metal die castings generally surpass plastic injection molded parts in strength and are more resilient to high temperatures. Metals like aluminum are particularly valued for their excellent strength-to-weight ratios.
Precision
Die casting provides standard tolerances between +/-0.003″ to 0.005″ per inch, although it can achieve as precise as +/- .001” based on your specific requirements, the part's geometry, and the material used.
Custom Finishes
Metal finishers can create die cast parts with either smooth or textured surfaces, in addition to various paints and plating finishes. These finishes not only enhance the part's resistance to corrosion but also improve its cosmetic appeal.
Disadvantages of Die Casting
Tooling Cost
Although the cost per unit of die cast parts is generally low, the initial investment for the tooling dies and their maintenance can be significant.
Not for Less Quantities
Given the substantial initial costs associated with tooling, die casting is not cost-effective for small production quantities. It's recommended to consider die casting only for runs exceeding 1000 units.
Long-term Program
Several preparatory steps must be completed before production can begin, often spanning several weeks. These include addressing Design for Manufacturability (DFM) issues, designing the tools, manufacturing them, and producing samples. The extensive upfront checks and validations required make die casting one of the slower manufacturing processes to initiate compared to other methods.
Our team of specialists will collaborate closely with you throughout the entire process, providing guidance and alternatives to ensure the most efficient turnaround time while catering to your specific requirements.
Why Choose TOPS for Your Die Casting Services?
Endless Options
Choose from millions of possible combinations of materials, finishes, tolerances, markings, and certifications for your order.
Easy to Connect
Get started with our sales and let our experts take care of managing the project from locating the right manufacturing partner to delivery logistics.
Operation Fast
From the first quote to final delivery, we operate with speed and precision to ensure your ideas and projects reach the market swiftly and on schedule.
Production Starts
As soon as your project commences, we will construct a high-quality die. Following the completion of tooling, we will dispatch initial part samples, known as T1s, for your review and approval.