Mechanical properties of zinc alloy

Mechanical properties of zinc alloy

In zinc alloy plate when impurity elements in the alloy composition of lead, cadmium, tin, exceed standard, cause a deformation of the casting and aging, characterized by swelling volume, a significant reduction in the mechanical properties especially the plastic, after a long time even burst, lead, tin, cadmium in zinc alloy plate solubility is small, and focused on the grain boundary as the cathode, rich aluminum solid solution as the anode, In the presence of water vapor, intergranular electrochemical corrosion is promoted, and die castings are aged due to intergranular corrosion.

Zinc alloy foil as a result of the die casting solidification speed, thus to room temperature, the solubility of solid solution is greatly saturated, zinc alloy foil after a certain time, the oversaturation gradually lifted, zinc alloy has good mechanical properties at room temperature, zinc alloy foil has good fluidity and good mechanical properties, and make the casting to slightly changing the shape and size.

Zinc alloy plate casting performance is good, can die casting precision of complicated shape and thin wall parts, casting light, melting and casting without iron absorption, no corrosion pressed, non-stick mold, zinc alloy plate has a very good room temperature mechanical properties and wear resistance, the organization of the zinc alloy plate is mainly composed of zinc containing Al and Cu of solid solution and containing zinc rich Al solid solution, Their solubility decreases with decreasing temperature.