Shenzhen Alu Rapid Prototype Precision Co., Ltd.

Zinc die-cast material refers to components or parts made from zinc alloys through the die-casting process. Die casting involves injecting molten metal under high pressure into a reusable steel mold (die) to produce precise, complex parts with excellent dimensional accuracy. Zinc alloys are commonly used in this process due to their favorable properties, making them a popular choice for a wide range of applications.

Material Composition:

Zinc die-cast parts are typically made from zinc-based alloys, such as Zamak (a family of alloys with zinc as the primary component, mixed with small amounts of aluminum, magnesium, and copper). Common Zamak alloys include Zamak 3, Zamak 5, and Zamak 7.

These alloys are engineered for strength, durability, and ease of casting.

Properties:

High Strength and Durability: Zinc alloys offer excellent mechanical strength, making them suitable for structural components. They are stronger than many plastic alternatives and comparable to some aluminum alloys.

Excellent Dimensional Accuracy: Zinc die-cast parts achieve tight tolerances (e.g., ±0.02 mm), ideal for precision components.

Superior Surface Finish: Parts have a smooth, high-quality surface, often requiring minimal post-processing (e.g., polishing or plating).

Corrosion Resistance: Zinc alloys, especially when plated (e.g., with chrome or nickel), resist corrosion well in many environments.

Castability: Zinc has a low melting point (around 380–420°C or 716–788°F), allowing for faster casting cycles, excellent flow into intricate molds, and longer mold life compared to other metals like aluminum.

Recyclability: Zinc is highly recyclable, making it an environmentally friendly option.

Thin-Wall Capability: Zinc alloys can be cast into thin-walled parts (as thin as 0.5 mm) without sacrificing strength.

Process:

In die casting, molten zinc alloy is injected into a steel mold under high pressure (1,000–30,000 psi).

The metal cools and solidifies rapidly (within seconds to minutes).

The mold is opened, and the part is ejected, ready for finishing (if needed).