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What are the types of copper

Author:mart Release time:2019-11-26 Page View:15
Made of pure copper or copper alloy in various shapes including bars, wires, plates, belts, strips, tubes, foils, etc.

 The following is the introduction of copper classification:

Copper material: made of pure copper or copper alloy in various shapes, including bars, wires, plates, strips, tubes, foils, etc. The processing of copper includes rolling, extrusion and drawing. The plates and strips in copper are hot-rolled and cold-rolled; the strips and foils are cold-rolled; the tubes and bars are divided into extruded products and drawn products; the wires are drawn.

1. Pure copper: it is commonly known as "red copper" in China and "red copper" in Japan and Taiwan

A. common brands: T1, T2, T3, TU1, TU2

B. characteristics: for conducting electricity

C. common uses: electrical switch, motor coil, electronic parts, air conditioning pipeline, soft welding gun head

2. Brass: Zinc

A. common brands: H59, H62, H65, H68, HPb59-1 (free cutting brass)

B. characteristics: high strength, wear resistance, water vapor corrosion resistance

C. common uses: building hardware, heat exchanger pipe, pump, power cylinder and bushing, military products

3. White copper: containing nickel

A. common brands: B19, B25, BFe10-1-1, bzn15-20, ba13-3

B. characteristics: stable physical properties at room temperature

C. common uses: medical appliances, precision instruments, thermocouples, clock parts, spectacle frames

4. bronze:

A. definition:

Old name: tin bronze, such as ancient bells, tripods and wine vessels

New definition: a general term other than purple, yellow and white copper

B. Name:

Chrome bronze: QCR 0.5, QCR 0.6-0.4-0.05

Tin bronze: QSn 4-3, QSn 6.5-0.4, QSn 7-0.2

Aluminum bronze: QAL 5, QAL 9-2, QAL 10-4-4

Beryllium bronze: QSI 3-1, QSI 3.5-3-1.5

Manganese bronze: QMN 1.5, QMN 5

Cadmium bronze: QCD 1, etc

C. according to the practical physical and chemical indexes, such as the engineering comprehensive index of hardness, strength, elasticity, high temperature resistance, conductivity, heat conduction, etc., there are different formulas.

D. uses:

For example: tin phosphor bronze: good elasticity, used as lamp spring and switch spring

Resistance welding electrode materials (roll welding machine, butt welding machine, touch welding machine, riveting welding machine) chromium zirconium copper, beryllium cobalt copper

It has a wide range of applications.

II. Special copper for electric spark:

Also known as electro etched copper

Around 1940, the former Soviet Academy of Sciences changed its way from anti-corrosion to size machining of metal materials due to the phenomenon of spark singeing on the opening and closing of plug. In 1943, the first EDM machine was developed, which can process 60HRC steel.

2. Expression method:

China: resistivity ρ ≤ 0.0017771 Ω. Mm2 / M (20 ℃)

EU: conductivity 1 / ρ ≥ 56.27 MS / M

Us. Japan: conductivity 56.27 x 1.73 = 97.34% IACS

3. Deoxidation method:

A. phosphorus

B. nitrogen protection

C. add alloy

4. Cost: affect price

A. raw material selection

B. smelting process

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