Zinc Die Casting
What is Zinc Die Casting
Zinc pressure die casting snaps hooks in our product line are made in this manner. It’s a process in which molten zinc alloy is placed under high pressure into molds or “Dies”. This zinc die casting process is very popular because of the variety of shapes and casting molds that can be created as well as the volume that can be reproduced with excellent results. The outcomes can be either left in their raw form or finely polished for a more finished look. For example, many bathrooms or kitchen faucets are plated zinc alloy die casting.
Zinc alloy properties offer a combination of characteristics that gives it a unique advantage in many zinc die casting applications. These include a combination of strength, ductility, impact strength, finishing characteristics and tooling that has a high resistance to catastrophic failure.
Zinc alloy is the heaviest alloy of the three alloy groups our die casting company offers, weighing approximately 2.5 times more than aluminum and 3.25 times more than magnesium. Further, zinc tools typically last between 400,000 and 700,000 shots depending on the design. With these factors and the finishing advantages of zinc alloy, it’s easy to see why this is a common alloy die casting choice for many applications.
Advantages of Zinc Die Casting
ZAMRK alloys have a special casting fluidity that allows the design of thin-walled sections. It can be cast into thinner, stronger walls to reduce weight and save material costs. Therefore, it is often used for smaller, lighter, and lower-cost zinc die casting products.
Longer Service Life
Zinc die casting alloy has a low melting point and a small solidification temperature range, which is easy to fill and form. The zinc casting alloy casting temperature is lower. The zinc casting mold has a long service life. It does not easily stick to the mold and does not corrode the mold.
Faster Production Rate
The zinc pressure die casting process has perfect performance, and the cooling rate has little effect on mechanical properties. The casting efficiency is higher than that of aluminum die casting alloy. It is used to make mechanical zinc die casting parts, toys, decorations, household appliances, etc.
Zinc alloys properties are resistant to corrosion in the atmosphere. And the residual waste can also be recycled and remelted, which is an environmentally friendly alloy.
When a finish is properly selected and applied to zinc alloy die casting, almost any desired aesthetic characteristic and coating durability can be achieved.
Eliminate bearings & bushings
Die cast zinc alloy properties for excellent bearing and wear allow greater design flexibility and reduce fabrication costs by eliminating small bushings and wear inserts.
Reduced assembly operations
Zinc alloy die casting entire assemblies can be cast as a single unit, eliminating the need for expensive manual assembly operations
Choice of low, medium, and high production
A variety of zinc die casting processes are available to economically manufacture casting parts of whatever size and quantity required.
Reduced machining operations
Due to the superior net-shape casting property of zinc alloys, machining can be eliminated or drastically reduced.
Extended tool life
With a zinc pressure die casting tool life often exceeding 1 million parts, tooling and machine usage charges are dramatically reduced.
Zinc Die Casting Applications
- Complex net-shaped zinc housings, with precise thin walls, offer excellent electrical performance and shielding properties.
- Our proprietary multi-slide die casting process and superior thin-wall capabilities make us the foremost zinc die casting manufacturer of zinc alloy components for a broad range of consumer electronic devices.
- The castability of zinc alloy, its wear resistance, and structural integrity make it perfect for the creation of the multi-faceted, highly complex shapes used in automotive safety and electronics industry.
The specific zinc die casting parts are shown below:
- Interior automotive aesthetic parts
- Engine and other under-the-hood components
- Power steering systems
- Brake parts and systems
- Air-conditioning components and systems
- Fuel systems
- Complex net-shaped housings
- Electronic devices
Zinc Alloys Use
ZA3#, ZA5#, ZA12#, ZA27#, etc.
|Tensile Strength (Mpa)
|Thermal Conductivity (W/mK)
|Good flow and mechanical properties.
It is applied to castings that do not require high mechanical strength, such as toys, lamps, decorations, and some electrical components.
|Good fluidity and good mechanical properties.
It is applied to castings that have certain requirements on mechanical strength, such as auto parts, electromechanical parts, mechanical parts, and electrical components.
|ZA-12 is the most versatile zinc alloy and is often used for gravity or pressure cast parts.
Zamak 12 is the best gravity casting alloy for sand, permanent mould and graphite die casting processes.
It is a good cold chamber die cast alloy.
|ZA-27 has the highest aluminum content, highest strength, highest melting point and lowest ZA group density.
ZA27 is 40% stronger than typical aluminum die-cast alloys. This zinc alloy has excellent bearing properties and can be used to design bearings into castings for certain applications.
However, its relatively high casting temperature requires a cold chamber process.
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