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CNC Milling Zinc Alloy

CNC Milling Zinc Alloy

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Zinc alloy die-casting is usually composed of 96% zinc, 4% aluminum, in addition to copper and magnesium. The other silicon, iron, cadmium, tin, lead, etc. are considered as impurities.

Pressure  die-cast zinc-aluminum alloy, the aluminum content can be refined  inside the crystal particles, strengthening the strength of the casting,  but also can reduce the molten zinc mold black metal erosion, with the  increase of aluminum content, castings strong plating and impact  resistance worth To significantly improve, but aluminum is higher than 4.5%, the impact toughness decreased. If the surface of the die castings need to be electroplated, such as  nickel-plated chrome, the high aluminum content causes poor adhesion,  and the ordinary zinc alloy electroplating process can not be well  applied to the high-aluminum plated parts.Metal copper polish part Supplier
Copper used to improve its mechanical properties, but also can improve  the strength and hardness of alloy castings, but not higher than 1.5%.

Trace amounts of magnesium 0.01% ~ 0.04%, so that zinc-aluminum alloy with creep resistance.

The  presence of other impurities such as silicon, iron, cadmium, tin and  lead will cause intergranular corrosion of the zinc alloy castings when  they are exposed to corrosive environments, and the iron in them is  harder iron-aluminum compounds with aluminum which gives Plating before machining and grinding and polishing difficulties.

 

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  • Contact Us

    Add: 2F, Building A1, No. 276, E. Baoshi Rd., Baoan District, Shenzhen
    Tel: +86-755-27359623
    Mob: +8618516195475
    E-mail: sales@litongcnc.com


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