Zinc alloys do not rust.
Zinc alloy is based on zinc and other elements. The commonly added alloy elements are aluminum, copper, magnesium, cadmium, lead, titanium and other low-temperature zinc alloys. Zinc alloy has low melting point, good fluidity, easy fusion welding, brazing and plastic processing, corrosion resistance in the atmosphere, and easy recovery and remelting of waste materials; However, the creep strength is low and the size change is easily caused by natural aging. It is prepared by melting method, die-casting or pressure processing.
According to the manufacturing process, it can be divided into cast zinc alloy and deformed zinc alloy. The main added elements of zinc alloy are aluminum, copper and magnesium. Zinc alloys can be divided into deformation and casting zinc alloys according to processing technology. Cast zinc alloy has good fluidity and corrosion resistance, and is suitable for die-casting instruments, automobile parts shells, etc.
Zinc alloy can only be oxidized. Zinc alloy is corrosion resistant, with high strength and low melting and boiling point. It is easy to react with oxygen in the air for a long time, forming a dense oxide film on the surface of the alloy to protect the metal inside from further oxidation. Reductive substances are required for removing oxide film, and acid (such as hydrochloric acid) solution can be used to neutralize the surface oxide film.
According to the manufacturing process, it can be divided into cast zinc alloy and deformed zinc alloy. The main added elements of zinc alloy are aluminum, copper and magnesium. Zinc alloys can be divided into deformation and casting zinc alloys according to processing technology. Cast zinc alloy has good fluidity and corrosion resistance, and is suitable for die-casting instruments, automobile parts shells, etc.