What is the biggest disadvantage of zinc alloy?

The biggest disadvantage of zinc alloy is its easy corrosion.

When the impurity elements lead, cadmium and tin in the alloy composition exceed the standard, the casting will undergo aging deformation, which shows volume expansion, mechanical properties, especially plasticity, decrease significantly, and even break after a long time.

Lead, tin and cadmium have little solubility in zinc alloys, so they are enriched on grain boundaries to become cathodes, and aluminum-rich solid solutions become anodes, which promote intergranular electrochemical corrosion in the presence of water vapor (electrolyte). Die castings are aged due to intergranular corrosion.

Although zinc alloy has good corrosion resistance, zinc castings usually contain impurities such as copper, aluminum and iron, which will lead to the formation of oxide layer on the surface of zinc castings, thus causing corrosion, discoloration and oil leakage.

In addition, due to the large thermal expansion coefficient of zinc alloy, it is easy to deform when heated, so the use of zinc alloy in some high temperature and high pressure environments may also be limited. In order to overcome these shortcomings, it is usually necessary to adopt appropriate surface treatment and alloy control technologies, such as timely cleaning, anti-corrosion coating treatment and strengthening alloy control.

Material application

New zinc alloy security window: The product characteristics of traditional stainless steel have begun to expose its disadvantages, and its quality commitment has also begun to be questioned. Its channel price system has been in a relatively transparent state. Jinsheng zinc alloy color steel protective window absorbs the advantages of existing doors and windows, becomes a new product with unique functions and its own characteristics, and is the third generation protective window.

It integrates safety and beauty, adopts unique welding-free assembly line operation and combined shuttle structure, accepts the baptism of the market and conforms to the needs of the market and consumers. Its birth will be an epoch-making revolution in the history of protective windows.

Security window, zinc alloy color steel, is made of the same material as outdoor facilities such as highway guardrail and high-voltage electric tower. High strength, beautiful appearance, bright color, high quality and low price are the best substitutes for stainless steel protective nets.