:: >It is named after its purple-red color. It is not necessarily pure copper. Sometimes a small amount of deoxidizing elements or other elements are added to improve the raw materials and performance, so it is also classified as a copper alloy. Chinese red copper plate processing materials can be divided into: ordinary red copper plates
:: >(
:: >,
:: >
:: >,
: : >
:: >,
:: >)
:: >, oxygen-free copper plate (
:: >
:: >,
:: >
:: >and high-purity, vacuum oxygen-free copper), deoxidized copper plates (
:: >
:: >,
:: >
:: >), four types of special copper plates with added few alloy elements (arsenic copper, tellurium copper, silver copper). The electrical conductivity and thermal conductivity of red copper plates are second only to silver, and they are widely used in manufacturing electrical and thermal conductive devices. Copper tape has excellent corrosion resistance in the atmosphere, seawater, certain non-oxidizing acids, alkalis, salt solutions and various organic acids (acetic acid, citric acid) and is used in the chemical industry. In addition, the red copper plate has excellent weldability and can be made into various semi-finished products and finished products through cold and hot plastic processing.
:: >
:: >Century
:: >
:: >In the 1990s, the output value of red copper plates exceeded the total output value of other types of copper alloys.
< r>: >Red copper plate
: >The room temperature tensile strength of the annealed plate is
: >
: >～
: >
: > Kilogram force
: >
: >mm
: >,
: >Elongation rate
: >
: >～
: >%
: >, Brinell hardness (
: >B
: >) is
: >
: >～
: >
: >.
: >
: > Has excellent electrical conductivity, thermal conductivity, ductility and corrosion resistance. It is mainly used in the manufacture of electrical devices such as generators, busbars, cables, switchgear, transformers, and thermal conductive devices such as heat exchangers, pipes, and flat-plate collectors of solar heating equipment. Commonly used copper alloys are divided into brass, bronze, and white copper
: >
: >Major categories.
: >
: > Pure copper plate is a purple-red metal, commonly known as
: >
: >Red copper plate
: >
: >,
: >
: >Red Copper Plate
: >
: >or
: >
: >Red Copper Plate
: >
: >.
: >
: > The copper plate is ductile. Pure copper as small as a drop of water can be stretched into filaments up to two kilometers long or rolled into virtually transparent foils larger than a bed. The most valuable property of the copper plate is its very good electrical conductivity, second only to silver among common metals. But copper is much cheaper than silver, so it has become the protagonist of the electrical industry
: >
: >.
: >
: >Red copper plate
: >has much wider uses than pure iron. The red copper mentioned here must indeed be very pure, with a copper content of
: >.%
: > or above. A very small number of impurities, especially phosphorus, arsenic, aluminum, etc., will greatly reduce the purple color. Conductivity of copper plates. The copper plate contains oxygen
: >(
: >A small amount of oxygen is simply mixed in during copper smelting
: >)
: >It has a great influence on the conductivity and is used in the electrical industry. Copper plates generally must be oxygen-free copper plates. In addition, impurities such as lead, antimony, and bismuth will prevent the crystallization of the copper plate from being combined together, causing thermal brittleness, and will also affect the processing of the copper plate. This kind of very pure copper plate is usually refined by electrolysis: impure copper
: >(
: >that is, crude copper
: >)
: > is used as an anode , pure copper is used as the cathode, and copper solution is used as the electrolyte. When the current is passed, the impure copper on the anode gradually melts, and pure copper gradually deposits on the cathode. The copper refined in this way
: >
: > has a purity of up to
: >.%
: >.
: >
: >
: ><:><:>
< r>: > Red copper plate is a relatively pure type of copper and can generally be considered as pure copper. , the conductivity and plasticity are good, but the strength and hardness are poor.
: ><:><:>
< r> : ><:><:>