Anodizing Zinc Alloy Die Cast for Mouse Shell with CNC Milling

This ZN3 zinc alloy die casting services is designed for the computer mouse shell. The mold core material is imported MS8407 mold steel. The mold life is 500,000 mold times. The die hardness is 48HRC to 52HRC. The highest accuracy tolerance ± 0.001mm. The daily production capacity of a single group of molds is 5000 pcs. The number of die-casting mold parting surfaces is multiple parting surfaces. The die-casting mold cavity number is Mmulti-cavity mold. The die-casting mold installation method is semi-fixed die-casting mold. The main processing equipment contains die-casting machine, punching machine, batching machine CNC, polishing machine, hole-turning machine, tapping machine. The technological process Die-casting → batching → polishing → baking paint → silk screen → salt spray test → full inspection. Customers can customize all details as same as they want.

Material Selection

The main die casting alloys are: aluminium, zinc, magnesium, copper, lead, and tin; although uncommon, ferrous die casting is also possible. Specific die casting alloys include: zinc aluminium; aluminium to, e.g. The Aluminum Association standards: AA 380, AA 384, AA 386, AA 390; and AZ91D magnesium. The following is a summary of the advantages of each alloy:
1. Aluminium: lightweight; high dimensional stability for very complex shapes and thin walls; good corrosion resistance; good mechanical properties; high thermal and electrical conductivity; retains strength at high temperatures.
2. Zinc: the easiest metal to cast; high ductility; high impact strength; easily plated; economical for small parts; promotes long die life.
3. Magnesium: the easiest metal to machine; excellent strength-to-weight ratio; lightest alloy commonly die cast.
4. Copper: high hardness; high corrosion resistance; highest mechanical properties of alloys die cast; excellent wear resistance; excellent dimensional stability; strength approaching that of steel parts.
5. Silicon tombac: high-strength alloy made of copper, zinc and silicon. Often used as an alternative for investment cast steel parts.
6. Lead and tin: high density; extremely close dimensional accuracy; used for special forms of corrosion resistance.
As of 2008, maximum weight limits for aluminium, brass, magnesium, and zinc castings are estimated at approximately 70 pounds (32 kg), 10 lb (4.5 kg), 44 lb (20 kg), and 75 lb (34 kg), respectively. By late-2019, press machines capable of die casting single pieces over-100 kilograms (220 lb) were being used to produce aluminium chassis components for cars.

Material Selection

Metal Minimum section Minimum draft
Aluminium alloys 0.89 mm (0.035 in) 1:100 (0.6°)
Zinc alloys 0.63 mm (0.025 in) 1:200 (0.3°)
Brass and bronze 1.27 mm (0.050 in) 1:80 (0.7°)
Magnesium alloys 1.27 mm (0.050 in) 1:100 (0.6°)

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