Advantages and disadvantages of zinc alloy signage

Writer：admin Time：2023-06-08 10:29 Browse：℃

　　Advantages of zinc alloy signs: casting zinc alloy has good fluidity and corrosion resistance, and is used in various decoration aspects, such as furniture accessories, architectural decoration, bathroom accessories, lighting parts, toys, Tie clip, belt buckle, various metal decorative buckles, etc.

　　Good surface smoothness, with a surface roughness of Ra0.8~3.2 μ m. Sometimes it can even reach Ra0.4 μ M

　　Good room temperature mechanical properties and wear resistance

　　Low melting point, melting at 385 ℃, easy to die cast.

　　The microstructure of die-casting parts is dense, with high strength and hardness: because liquid metal is cooled and solidified under pressure, and the filling time is extremely short, the cooling speed is extremely fast, so the layer of metal grains near the surface of the die-casting parts is finer, and the structure is dense.

　　Disadvantages of zinc alloy signs: There are protrusions and small bubbles on the surface of die-casting parts, which are discovered immediately after die-casting, exposed after polishing or processing, and appear after oil spraying or electroplating. The reason for this is that when the gas in the mold cavity, the gas emitted by the coating, and the gas precipitated during alloy solidification, it ultimately remains in the casting to form pores when the mold exhaust is poor.