What is the Zinc Die Casting Process?

By Cherry / July 4th, 2024  

Introduction

Zinc die casting is a process that manufactures metal parts of various shapes and sizes by injecting molten zinc alloy into the die cavity under high pressure. 

This process is widely used in various industries due to its high efficiency, economy, and ability to produce high-quality parts.

Historical background of zinc die casting

The zinc die-casting process originated in the 19th century and gradually evolved and improved with the development of industrialization. The original die-casting

materials were mainly tin and lead, but with the advancement of technology and changes in demand, zinc became the main material. Zinc alloy has excellent mechanical properties, corrosion resistance and low melting point, making it an ideal choice for die casting process.

Basic steps of the zinc die-casting process

Prepare raw materials: First, select high-quality zinc alloy raw materials, such as Zamak series alloys.

Melt zinc alloy: Heat the zinc alloy to about 400°C in a dedicated furnace to make it completely melted.

Mold preparation: According to the design requirements of the part, use steel to make a high-precision mold. The mold is divided into two parts: movable 

mold and fixed mold.

Injection of zinc liquid: The molten zinc alloy is injected into the mold cavity through a high-pressure injection system (die-casting machine). Usually, a 

cold chamber die casting machine or a hot chamber die casting machine is used.

Cooling and solidification: The zinc alloy is rapidly cooled and solidified in the mold to form the desired part shape.

Opening the mold and taking out the parts: After the mold is opened, the molded parts are taken out by a robot or manually.

Post-processing: Deburring, cleaning, surface treatment (such as spraying, electroplating) and other subsequent processing are performed on the die castings 

to meet the use requirements.

Advantages of zinc die casting

High precision and complexity: Zinc die casting can produce parts with precise dimensions and complex shapes to meet strict tolerance requirements.

Efficient production: The die-casting process has a short cycle, which is suitable for mass production and reduces unit costs.

High material utilization: Zinc alloy waste can be recycled and reused, reducing material waste.

Good surface finish: The surface of the die casting is smooth, and a good appearance effect can be achieved without complex surface treatment.

Application fields

The zinc die-casting process is widely used in the automotive industry, electronic appliances, building hardware, toy manufacturing, household goods, and 

other fields. For example, automotive parts (such as door handles, and radiator covers), electronic connectors, locks, decorative parts, etc. are all manufactured 

using the zinc die-casting process.

Challenges of zinc die-casting process

Although zinc die-casting has many advantages, it also faces some challenges. For example, the mold manufacturing cost is high and the design is complex; the 

process parameter control requirements are strict; large-sized or thin-walled parts are prone to deformation and cracking.

Future development trend

With the continuous advancement of science and technology, the zinc die-casting process is also constantly innovating and improving.

In the future, the application of intelligent

manufacturing technology, advanced materials, and environmentally friendly processes will further improve production efficiency 

and product quality of zinc die-casting. 

At the same time, the development of more sophisticated mold manufacturing technology and automated production lines 

will bring new development opportunities for the zinc die-casting process.

Conclusion

The zinc die-casting process has become one of the indispensable and important processes in modern manufacturing with its high efficiency, economy, precision, and 

environmental protection. With the continuous advancement of technology and the continuous expansion of application fields, zinc die-casting will usher in a broader development prospect.

Contact LK Egypt to learn more info about the die-casting machine.

LKAGENT OFFICE DCM

Address: Industry Zone, South of Port Said Kebly, Egypt

https://www.zazdiecasting.com/

Phone: +86 13598704163

Mobile: +20 101 304 3317      +20 150 181 8310

Email: jack@zazmae.com      ahmedmahmoud@zazmae.com

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