The zinc alloy die casting is a zinc base alloy with other elements, alloying elements that are often added include aluminum, copper, magnesium, cadmium, lead, titanium, etc.. The zinc alloy has low melting point, good fluidity is easy to be melt welded, brazed and plastic processed characteristics. Zinc alloy is resistant to corrosion in the atmosphere, and the waste material is easy to be recycled and remelted. However, the creep strength is low, and it is easy to occur natural aging to cause dimensional change. Zinc alloy is diecast or pressure machined by melting, and it can be divided into cast zinc alloy and deformed zinc alloy as per manufacture process.
The main additions to the die-cast zinc alloy are aluminum, copper and magnesium. Zinc alloy can be divided into two types: deformation zinc alloy and casting zinc alloy according to processing technology. The casting zinc alloy has good flow and corrosion resistance, suitable for die casting instruments, automobile parts housings, etc..
Zinc alloy has many characteristics.
Large proportion; Good casting performance, suitable for complex die casting parts, thin-wall precision casting parts which have smooth surface;
Available surface treatment including electroplating, spray painting and painting;
When melting and casting, there is no Iron absorption, no corrosion and no sticky mold;
Good room temperature mechanical properties and abrasion;
Low melting point, melts at 385 ° C, easy to die casting.
Types of zinc alloy:
Zamak3: Good fluidity and mechanical properties, suitable for castings with low mechanical strength, such as toys, lamps, decorations, and some electrical parts.
Zamak5: Good fluidity and good mechanical properties, suitable for castings that have certain requirements for mechanical strength, such as auto parts, electromechanical parts, mechanical parts, electrical components.
ZA8: Good fluidity and dimensional stability, suitable for workpieces with small size, high precision and mechanical strength, such as electrical components.
Zamak2: It is used for mechanical parts with special requirement for mechanical properties, high hardness requirement and precision of dimension.
Superalloy: It has the best fluidity, suitable for die casting thin wall, large size, high precision and complex shape parts, such as electrical components and box body.
Different zinc alloys have different physical and mechanical properties, thus providing a choice space for die casting design. If you have problems when you select zinc alloys, you can ask us which zinc alloys are more suitable, and we will give you appropriate advice for reference.
