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2020

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10

Copper Uses and Applicationss

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Copper is a non-ferrous metal closely related to human beings. It is not only rich in resources, but also has excellent electrical conductivity, thermal conductivity, ductility, corrosion resistance, abrasion resistance and other excellent properties. Widely used in electric power, electronics, energy and petrochemicals, machinery and metallurgy, transportation, light industry, emerging industries and other fields, in China's non-ferrous metal material consumption is second only to aluminum.

Electric power industry

Power transmission such as cables, transformers, switches, plug-in assemblies and connectors; motor manufacturing, such as stator, rotor, axle head and hollow wire; communication cables and residential wires also require a large amount of copper wire.

It

Copper foil electro-vacuum devices, such as high-frequency and ultra-high-frequency transmitter tubes, transition tubes, and magnetron tubes, require high-purity oxygen-free copper and diffusion-reinforced oxygen-free copper. Copper printed circuits require large amounts of copper foil and copper-based brazing materials. In integrated circuits, copper is used in silicon chips instead of aluminum for interconnects and leadframes.

Energy and petrochemical industry

The main condenser tube plates and condenser tubes of thermal power plants in the energy industry are made of brass, bronze or white copper. Solar heaters are also often manufactured using copper tubing. Copper and many copper alloys in the petrochemical industry are widely used in the manufacture of various vessels in contact with corrosive media, piping systems, filters, pumps and valves, various evaporators, heat exchangers and condensers. In the marine industry, copper and its copper alloys are very important materials in the marine industry, because copper is not only resistant to seawater corrosion, and dissolved in the water of copper ions have a bactericidal effect, which can prevent the scaling of marine organisms. Therefore, copper and its copper alloys have been used in desalination plants and are widely used in offshore oil and gas production platforms and other coastal and submarine facilities, such as piping systems, pumps and valves used in the desalination process and equipment used in oil and gas production. Gas production platforms, including splash zone and subsea bolts, corrosion-resistant biofouling jackets, pumps and valves, and piping systems.

Transportation

Aluminum bronze-copper alloys in the shipbuilding industry include aluminum bronze, manganese bronze, aluminum brass, gunmetal (tin-zinc bronze), white copper and nickel-copper alloys (monel alloys), all of which are standard materials for shipbuilding. In warships and merchant ships, copper and copper alloys are generally used as aluminum-bronze propellers, bolts, condenser tubes, rivets and copper-containing cladding coatings. In the automotive industry, copper and copper alloys are used for radiators, brake system piping, hydraulics, gears, bearings, power distribution and power systems, brake pads, gaskets, and a variety of joints, fittings and trim. The motors, rectifiers, and control, braking, electrical, and signaling systems on railroad trains also rely on copper and copper alloys for their work. In addition, railroad electrification places a high demand on copper and copper alloys. Copper is required for wiring, hydraulic, cooling and pneumatic systems in aircraft, bearing cages and landing gear bearings are made from aluminum bronze tubes, and navigation instruments are made from antimagnetic copper alloys.

Mechanical Metallurgy

Mechanical engineering in addition to motors, circuits, hydraulic systems, pneumatic systems and control systems use copper in large quantities, a variety of transmission parts and fixed parts, such as cylinder liners, connectors, fasteners, gears, torsion parts. , all need to use copper or copper alloy to reduce wear and lubrication. The crystallizer is a key component in the continuous casting technology of metallurgical equipment, mostly made of copper alloy with high strength and high thermal conductivity such as chrome copper and silver copper. Induction heating induction coils of various induction heating are made of copper tubes or shaped copper tubes with water cooling in the middle. Alloy additives Copper is an important element added to steel, aluminum and other alloys. Low-alloy structural steel with a small amount of copper to improve the strength of steel and resistance to atmospheric and marine corrosion. Copper is added to corrosion-resistant cast iron and stainless steel to further improve their corrosion resistance.

Light Industry Applications

Copper and copper alloys can be used in the manufacture of air-conditioning heat exchangers, watch movements, paper machines with nets, rollers, printing copper, fermentation tank lining, distillers, building decorative components and so on.

Emerging industries and high-tech fields

Copper is also used in emerging industries and high-tech fields, such as superconducting alloys, ultra-low temperature media containers and pipelines, rocket engine cooling village, high-energy gas pedal magnet windings and so on.

Translated with DeepL.com (free version)

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