Something is made of zinc

In the past, the outer metal skin of dry batteries was made of zinc, and those batteries were relatively soft, but now they are generally not used, because of high cost reasons, most of them now use steel sheets.

The metal plug on the socket is not zinc, and it is impossible to use zinc, which would be too costly.

Because the market price of zinc is high, now electrical appliances, tools, daily necessities, etc. rarely directly use zinc sheets, generally galvanized or zinc alloys, only in the water-soaked part of large ships with zinc plate as a protective layer, only in rare cases directly use pure zinc.

How is colored zinc made?

Hardware rust removal, hardening, degreasing, electric rust and other pre-treatment--- galvanizing--- light--- passivation into white zinc or color zinc--- drying, color zinc to use liquefied gas flame.

The final process of color zinc plating is "passivation" or "sealing", which will affect its color.

As for the color inconsistency, there will be some color difference in color zinc, but the color contrast is particularly large, which can be called the first business to improve.

In addition, another use of galvanizing is to prevent rust, so it should be required to do a salt spray test.

There are several colors of color zinc, cyan, red, and yellow. Unless otherwise specified, a slight color difference is normal. It is best to ask the customer to give a sample to the electroplating factory to make a plate, or you can ask the electroplating factory to plating the same color.

Chinese requirements for electroplating color zinc: 72 hours medium salt spray test, red rust is not allowed. No white rust for 48 hours.

The color of color zinc lies in the length of the passivation time, and the difference of a few seconds is also different, and it is unlikely that the same batch of screws should be exactly the same, but can only be closer.

The appearance effect of color zinc plating products is mainly bright colors, such as red, pink, blue and so on. Generally speaking, the coating is not very protective of the product, and one of its main functions is that the product has a metallic texture.

Zinc fertilizer (zinc sulfate, zinc chloride).

Zinc oxide can also be used in pharmaceutical, rubber, paint and other industries.

Bass, composed of zinc with copper, tin, and lead, is used in the machinery manufacturing industry.

Zinc is the raw material for the synthesis of melanin, and children with zinc deficiency are alert to the risk of vitiligo.

The common things made of zinc in life are mainly die-castings, which are used for parts and components of automobiles, buildings, some electrical equipment, household appliances, toys, etc.

The strength and hardness of zinc itself are not high, but after adding alloying elements such as aluminum and copper, its strength and hardness are greatly improved, such as zinc-copper-titanium alloy.

Its comprehensive mechanical properties have approached or reached aluminum alloy, brass, and gray cast iron.

The creep resistance has also been greatly improved. Therefore, zinc-copper-titanium alloy has been widely used in the production of small hardware.

The main uses of metal zinc: used in galvanizing industry, used in zinc alloys, zinc can be used to make batteries, etc.

1. It is used in galvanizing industry.

Galvanized has excellent atmospheric corrosion resistance, and it is easy to form a protective film on the surface at room temperature. After the 21st century, the amount of hot-dip galvanizing of steel strip has increased significantly.

Electrogalvanizing is also used, but this method is generally used for thinner coatings and different surface finishes. The use of paints containing zinc powder is another method of coating; Objects that are in continuous contact with water, such as large steel components used in ships, bridges and offshore oil and gas derricks, can be protected by simply connecting to large zinc blocks, but the zinc blocks need to be replaced regularly.

2. It is used for zinc alloy.

Zinc has suitable mechanical properties. The strength and hardness of zinc itself are not high, but after adding alloying elements such as aluminum and copper, its strength and hardness are greatly improved.

It is mainly die-casting, which is used in the production of parts and components for automobiles, buildings, some electrical equipment, household appliances, toys, etc. The processing performance of many zinc alloys is relatively good, and the processing rate of passes can reach 60%-80%. Medium pressure performance is superior for deep drawing and self-lubrication for longer die life.

3. Zinc can be used to make batteries.

Zinc, as the active material of the anode, doubles as the container of the battery and the negative electrode electric entrainment, and is the main material that determines the storage performance of the battery. Zinc-air battery, also known as zinc-oxygen battery, is a type of metal-air battery. The theoretical specific energy of zinc-air batteries is 1350W·h kg, and the specific energy of the latest battery has reached 230Wh kg, which is almost 8 times that of lead-acid batteries.