The use of copper

In ancient times, it was mainly used for casting utensils, artworks and weapons. Famous utensils and works of art such as Simu Wuding and Siyang Fangzun.

Modern is widely used in electric power, light industry, machinery manufacturing, construction industry, national defense industry and other fields. Details are as follows:

1, used in the electrical and electronic market.

Electrical appliances with long service life: wires, buses, transformer windings, heavy-duty motors, telephone lines and telephone cables.

Electrical appliances with short service life: such as small appliances and consumer electronic products.

2. Transportation equipment

Automatic radiator is the most important end user in this field. However, the usage of copper in automatic electrical appliances and electronic products has increased rapidly, while the usage in heat exchanger market has declined. The average service life of a car is 10- 15 years, and almost all the copper is recycled before it is disassembled and recycled.

3. Industrial machinery and equipment

Coins and weapons are the main end users in this field. Bullets are rarely recycled, some coins can be melted, and many coins are kept by collectors or savers and cannot be recycled. In the manufacture of machinery and transport vehicles, it is used to manufacture industrial valves and accessories, instruments, sliding bearings, molds, heat exchangers and pumps.

It is widely used in the chemical industry to manufacture vacuum tanks, distillation tanks, brewing tanks, etc.

In the national defense industry, it is used to make bullets, shells, gun parts and so on. It takes 13 ~ 14 tons of copper to produce 3 million bullets.

In the construction industry, it is used as various pipes, fittings and decorative devices.

4. Medicine

In 1970s, Liu Tongqing, a medical inventor in China, discovered that copper had a strong anticancer effect, and successfully developed the corresponding anticancer drug "Kekan 78,565,438+0", which was successful in clinic. Later, Mexican scientists also found that copper has anti-cancer effect. In the new century, British researchers found that copper has a strong bactericidal effect. I believe that in the near future, copper will make great contributions to improving human health.

5. Organic Chemistry

In organic chemistry, organocopper lithium compounds are an important class of organometallic compounds.

6. Alloys: Copper can be used to make various alloys. ?

(1) brass

Brass is an alloy of copper and zinc, hence its yellow color. Brass has good mechanical properties and wear resistance, and can be used to manufacture precision instruments, ship parts, artillery shells and so on. Brass sounds good, so gongs, cymbals, bells, horns and other musical instruments are made of brass.

(2) Nautical brass

The alloy of copper, zinc and tin is resistant to seawater corrosion and can be used to manufacture ship parts and balancers.

(3) Bronze

The alloy of copper and tin is called bronze, which is named after its blue color. Bronze generally has good corrosion resistance, wear resistance, castability and excellent mechanical properties. It is used to manufacture precision bearings, high-pressure bearings, seawater corrosion-resistant mechanical parts on ships and various plates, pipes and bars. Bronze also has an abnormal feature-"thermal contraction and cold expansion", which is used to cast statues. Expansion after cooling can make eyebrows clearer.

(4) Phosphor bronze

The alloy of copper with tin and phosphorus is hard and can be used to make springs.

(5) white copper

White copper is an alloy of copper and nickel, which is as bright as silver and not easy to rust. It is often used to make coins, electrical appliances, instruments and decorations.

(6) 18k gold (18K gold or rose gold)

Alloy of 6/24 copper and 18/24 gold. Red and yellow, high hardness, can be used to make jewelry and decorations.

Extended data

Combination of copper and wood:

Copper-wood edge came into being, and the products used the ingenious combination of copper and wood, with unique materials and unique style. Copper, noble material, elegant vessel; Wood, original flavor, has great ornamental and collection value. Copper+wood is not a simple stacking, but a combination of art, appreciation, collection and practical value, drawing on the essence of traditional culture and creating classic lighting products with ingenuity.

With the changes of the times, consumption is younger, and brands need to lead the trend and follow the trend to make a difference. Although the traditional lamps in China are elegant, they are simple and lack aura. Although modern lamps are avant-garde, they are slightly frivolous and lack connotation.

Tongmuyuan shoulders the great mission of "Modern Copper Wood Home Explorer", integrating lamps, furniture and ornaments, deeply integrating modern beauty with classical beauty, making it an inseparable whole, and creating a simple, elegant, fashionable and simple home environment without carving, which is highly sought after by young consumers and greatly fills the gap in the modern copper wood home market.

Copper is widely used in industry because of its excellent properties. Including electrical industry, machinery manufacturing, transportation, construction, etc. At present, copper is mainly used to manufacture wires, communication cables, motors, generator rotors, electronic instruments and meters in the electrical and electronic industry, accounting for about half of the total industrial demand.

Copper and copper alloys play an important role in computer chips, integrated circuits, transistors, printed circuit boards and other equipment and devices. For example, Cr-Zr-Cu alloy with high electrical conductivity and high thermal conductivity is used for transistor leads. Recently, IBM, an internationally renowned computer company, used copper instead of aluminum in silicon wafers, which marked the latest breakthrough in the application of the oldest metal in semiconductor technology.

Refer to Baidu Encyclopedia-Copper