Zinc Die Casting Services

Zinc alloy die casting is a kind of precision casting method, which uses high pressure to force metal melt into complex metal mold. Materials worked with are iron, SG iron, ductile iron, steel, stainless steel, aluminum and aluminum alloys, brass, bronze, copper, nickel, titanium, neoprene, ethylene-propylene, nitrile, silicone, styrene-butadiene, natural rubber, polypropylene, polystyrene, polyethylene, polycarbonate, ABS, PVC, and nylon. Also capable of molding, CNC machining, stamping, tooling, and finishing.

Zinc is the fourth most popular material in the metalworking industry that are shaped into die cast products.Material:Zamak 3,Zamak 5 and Zamak7. Because of its low melting point, it is among the easiest and least expensive (in terms of die caster energy consumption) metals to die cast. Zinc die castings are applied in contexts throughout industry, commerce and even in consumer products contexts such as Machinery and Auto industries. Zinc alloy die casting is no better than other molding technology. If you want to make good die-casting products, not only you should have a good die-casting machine, but also combine the mold, die-casting machine and die-casting process to make a good product.

Features Of Zinc Die Castings

1.Good strength and hardness

2.Good casting performance, can be used for casting precision parts with complex shape and thin wall, and the casting surface is smooth.

3.Surface treatment: electroplating, spraying and painting.

4.During melting and die casting, no iron absorption, no corrosion, no mold sticking.

5.High dimensional accuracy and stability.

6.It has good room temperature mechanical properties and wear resistance

Low melting point, melting at 385 ℃, it is easier to form than aluminum alloy die casting.

Zinc Die Casting Process

The zinc die casting process involves injecting molten zinc alloy into a steel die cavity, which is designed to create parts with precise shapes and dimensions. This high-pressure process begins with melting the zinc alloy, which is then forced into the die at high speed, allowing for rapid solidification and excellent dimensional accuracy.

The quick cooling of the molten metal against the cooler steel die results in superior mechanical properties, making zinc die castings stronger and more durable than those produced by other casting methods. Additionally, zinc die casting is known for its ability to produce complex geometries and thin-walled sections, which can significantly reduce material costs and weight.

Zinc Die Casting Applications

• Automotive Industry

  Zinc die casting is widely used in automotive components due to its high strength-to-weight ratio, corrosion resistance, and ability to produce complex shapes.

  Door handles

  Lock housings

  Carburetors

  Fuel system components

  Engine parts

  Brake parts

  Window cranks

  Decorative trim pieces

• Electronics and Electrical Components

  Zinc’s excellent thermal and electrical conductivity makes it ideal for electronic and electrical applications.

  Connector housings

  Heat sinks

  Switchgear components

  Electrical enclosures

  Casings for electrical devices

  LED lighting parts

Zinc Die Casting vs Aluminum Die Casting

Both zinc die casting and aluminum die casting are widely used in manufacturing, but the best choice depends on your specific application, cost considerations, and durability needs.

Feature	Zinc Die Casting	Aluminum Die Casting
Precision & Thin Walls	Higher precision, allows for intricate designs	Suitable for larger parts but less precise
Durability & Strength	More impact-resistant and stronger	Lighter but less impact-resistant
Melting Point	Lower melting point, reduces production costs	Higher melting point, withstands higher temperatures
Surface Finish	Smoother, easier to plate or coat	Good surface finish but requires extra work

China Custom Manufacturer Of Zinc Die Casting

Looking for high quality zinc die casting parts die casted by an experienced and reliable components manufacturer? As one of the leading die casting services companies in China, Junying can provide you with the best cheap die castings whether you are looking for zinc alloy castings, mold die castings, or aluminum zinc die castings. We provide one-stop customized zinc die castings with competitive prices to the global marketplace, plus a multitude of related services, including engineering, designing, machining, finishing and assembly. Enable to process the zinc die casting parts with stable and reliable quality according to customers’ specifications. We own advanced techniques, professional engineering team and modern die caster to ensure that the zinc die casting parts meet your requirements and achieve the demands for precision and productivity. Our zinc builder will manufacture the appropriate zinc die castings for you for cold chamber die casting machines with a maximum of 188 tons closing force.

What Are The Advantages Of Our Zinc Die Casting Services?

All of our zinc die castings are guaranteed to be shipped to you on time.

Our staff is dedicated to providing the highest levels of customer service to ensure full customer satisfaction every time.

Our die casting zinc alloy is ideal for those project requiring complex shapes or unique requirements.

Our zinc die castings are of the highest quality and most affordable prices.

Finish the parts in time to provide the strongest support for your R&D projects.

Do zinc die casting manufacturing according to your drawings or samples

We offer customers full-service zinc alloy die castings and related capabilities from design to delivery. We work with a large variety of metal options, making us your one-stop source.

What is Zinc Die Casting Service?

Zinc alloy die casting is a precision casting method that uses high pressure to make metal melt into complex metal mold. Zinc is one of the most used materials in the metalworking industry that are shaped into die cast products, known for its low melting point, making it among the easiest and least expensive metals to die cast.

Zinc die castings’ applications are throughout industry, commerce and even in consumer products contexts such as Machinery and Auto markets. We offer best quality and cost effective zinc die casting services with various processing options including molding, CNC machining, stamping, tooling, and finishing.

Characteristics of Zinc Alloy Die Castings

High specific gravity: Offers weight and texture with higher strength than injection molding

Excellent casting performance: Can manufacture precision parts with complex shapes and thin walls

Versatile surface finishes: Electroplating, spraying, painting, polishing, and grinding options

Non-reactive: Doesn’t absorb iron, corrode profiles, or stick to molds

Low melting point: Melts at 385°C, making it energy-efficient for die casting

Strong dimensional stability: Produces parts with precise tolerances

Vivid details: Capable of producing intricate relief patterns and designs

Cost-effective: Lower energy consumption compared to other metals

Zinc Die Casting Process

① Material Preparation

Select appropriate zinc alloy and melt to optimal temperature (385-420°C)

② Mold Preparation

Design and manufacture high-temperature resistant molds

③ Die Casting

Inject molten zinc under high pressure into mold cavity

④ Cooling & Demolding

Allow parts to solidify before carefully removing from mold

⑤ Post Processing

Deburring, grinding, and polishing for final finish

⑥ Quality Inspection

Verify dimensions, appearance, and performance

Applications of Zinc Die Casting

Why Choose Us As Your Zinc Die Casting Supplier?

FAQ

1. What Mold Steel is Used for Zinc Alloy Compression Molds

The hot work die steel materials commonly used in zinc alloy die-casting molds include T302 and SKD61, which generally have a hardness of about HRC50. Although these materials can meet general usage requirements, due to their relatively low hardness, they will gradually approach the end of their lifespan due to wear and tear during long-term use. For zinc alloy die-casting molds that require large-scale production, choosing mold steel with higher hardness is a solution. For example, VIKING steel, TS580 steel, HD steel, and YXR33, among others, have a hardness exceeding HRC54, demonstrating excellent wear resistance and effectively extending the service life of molds.

2. Treatment Methods for Common Defects in Zinc Alloy Die-Casting Parts

Due to the fact that the causes of each defect come from multiple different influencing factors, in actual production, to solve the problem, it is necessary to first adjust the machine in the face of numerous reasons? Should we change the materials first? Or modify the mold first? Suggest processing according to the difficulty level, starting with simplicity and then complexity, in the following order:

1. Clean the parting surface, clean the cavity, and clean the top rod; Improve coatings and spraying processes; Increase the clamping force and increase the amount of metal poured. These measures can be implemented through simple operations.

2. Adjust process parameters, injection force, injection speed, filling time, mold opening time, pouring temperature, mold temperature, etc.

3. Change materials, select high-quality aluminum alloy ingots, change the ratio of new materials to recycled materials, and improve the melting process.

4. Modify the mold, modify the pouring system, add internal gates, and add overflow grooves, exhaust grooves, etc.

   For example, the reasons for the occurrence of burrs in die-casting parts are:

– Die casting machine issue: Incorrect adjustment of locking force.

– Process issue: The injection speed is too high, resulting in a high pressure shock peak.

– Mold issues: deformation, debris on the parting surface, uneven wear of inserts and sliders, insufficient strength of the template.

   The sequence of measures to solve the flying edge: clean the parting surface → increase the locking force → adjust the process parameters → repair the worn parts of the mold → increase the rigidity of the mold. From easy to difficult, with each step of improvement, first verify its effectiveness, and if not, proceed to the second step.

3. How’s Medical Device Zinc Die Casting

Medical Device Zinc Die Casting leverages zinc alloy’s exceptional precision, biocompatibility, and sterilizability to produce high-performance components such as surgical instruments, imaging equipment parts, and drug delivery mechanisms. Zinc alloys like Zamak offer superior strength-to-weight ratios, corrosion resistance, and smooth surface finishes critical for medical applications requiring stringent hygiene standards (e.g., autoclave sterilization) and tight tolerances. The process enables intricate, miniaturized designs for implants or diagnostic tools while ensuring compliance with regulatory requirements (ISO9001，TS16949). With rapid production capabilities and cost efficiency for high-volume orders, zinc die casting delivers durable, lightweight, and reliable solutions tailored to the rigorous demands of the healthcare industry.

4. Cost Comparison Between Zinc Die-Casting &  Injection Molds

1. The cost of zinc alloy die-casting molds is relatively high

Making molds is a crucial step in zinc alloy die-casting or  injection molding. Zinc alloy die-casting is the rapid manufacturing and forming of zinc alloy using a die-casting machine, which requires the production of zinc alloy die-casting molds. This type of mold is composed of multiple complex components, with high production difficulty and long production cycle, resulting in relatively high costs.

2. The cost advantage of zinc alloy die-casting is gradually emerging

Although the cost of zinc alloy die-casting molds is relatively high, the cost advantage of using zinc alloy die-casting will gradually become apparent in large-scale production. Because the high cost of zinc alloy die-casting can be allocated to each product during mass production, the cost of each product is relatively low. In addition, zinc alloy has high density, strength, can be reused multiple times, and has a long service life, which can reduce investment costs.

3. injection molds have low cost but relatively high product cost

Compared to zinc alloy die-casting molds,  injection molds have lower costs and lower production difficulties. However, it should be noted that the cost of  injection molds is relatively high. Because during the injection molding process,  particles require heating, compression, and injection molding. In addition to mold costs, a series of equipment costs such as injection molding machines, heating equipment, and cooling water circulation also need to be considered. Therefore, when large-scale production is required, the cost of  injection molding may be higher.

5. Difference Between Zinc & Aluminum Die Casting

1: Differences in conceptual definitions: Zinc alloy is an alloy composed of zinc as the base and other elements added. Common alloying elements include low-temperature zinc alloys such as aluminum, copper, magnesium, cadmium, lead, and titanium. Aluminum alloy is a general term for alloys based on aluminum, mainly containing alloying elements such as copper, silicon, magnesium, zinc, manganese, and secondary alloying elements such as nickel, iron, titanium, chromium, lithium, etc.

2: Performance differences: Zinc alloy has a low melting point, good flowability, easy fusion welding, brazing, and plastic processing, corrosion resistance in the atmosphere, and the blind material is easy to reuse and remelt; But the brittle strength is low, and it is easy to undergo size changes due to natural aging again. The hardness of zinc alloy is 65 to 140, and the tensile strength is 260 to 440. Aluminum alloy has low density but high strength, similar to or exceeding high-quality steel, good plasticity, and can be processed into various profiles. It has excellent conductivity, thermal conductivity, and corrosion resistance. The hardness of aluminum alloy is 45 to 90, and the tensile strength is 120 to 290.

3: Differences in Die Casting Processes: The melt temperature of zinc alloy die castings is over 380 degrees, while that of aluminum alloy die castings is over 600 degrees. The die-casting equipment for zinc alloy and aluminum alloy is different.

4: Difference in service life: The service life of aluminum alloy die castings is 100000, while that of zinc alloy die castings is 200000.