The summary of zinc

Zinc, perhaps most often heard in advertisements on TV: "Zinc deficiency can lead to anorexia, partial or pica in children." In fact, the use of zinc is not only in the human body essential trace elements. Due to its metal properties, zinc should be widely used in non-ferrous metals, metallurgy, shipbuilding, mechanical and electrical, chemical, automobile, military, coal and petroleum and other industries and departments. Zinc alloys are now more widely used.

Zinc has good metal properties, and many metals can be composed of good performance of various alloys. Among them are zinc aluminum alloy, zinc iron alloy, zinc copper alloy and so on. The industrial and daily uses of zinc are described below.

First: galvanizing process

Because zinc is chemically more active than iron and copper, coating iron with zinc is a good protection against corrosion. This process is especially widely used in the shipbuilding industry. The ship's exposure to seawater also provides electrolytes, and when the iron is coated with zinc it creates a chemical battery that coats the iron with a protective layer of ZnCO3, 3Zn(OH)2, and so on. So the process has been used on ships.

Second: for automobile manufacturing and machinery industry.

The strength and hardness of zinc itself is not high, and the addition of aluminum, copper and other alloying elements, its strength and hardness are greatly improved, especially the appearance of zinc copper titanium alloy, its comprehensive mechanical properties have been close to or reached the level of brass, gray cast iron, its creep resistance has also been greatly improved. Therefore, zinc copper titanium alloy has been widely used in hardware production.

Third, for casting zinc alloy.

Mainly for die casting, used in automotive, light industry and other industries, accounting for about 15%. The processing performance of many zinc alloys is relatively good, and the processing rate of passes can reach 60%-80%. Excellent medium voltage performance, can be deep drawing, and has self-lubricating, prolong the life of the mold, can be used for brazing or resistance welding or arc welding (in helium gas), the surface can be electroplated, paint treatment, good cutting performance. It has superior superplastic energy under certain conditions.