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14-12-2018
Printed circuit The copper printed circuit uses a copper foil as a surface and is attached to a plastic plate as a support; the circuit wiring pattern is printed on the copper plate by means of photography; the excess portion is removed by etching to leave a circuit connected to each other. Then, the connection between the printed circuit board and the external portion is punch...
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08-12-2018
Electric vacuum device Electrovacuum devices are mainly high-frequency and ultra-high frequency emission tubes, waveguides, magnetrons, etc., which require high-purity oxygen-free copper and dispersion-enhanced oxygen-free copper. www.feihongalloys.com
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30-11-2018
Residential electrical line With the improvement of the living standards of our people and the rapid spread of household appliances, the residential electricity load has grown rapidly. As shown in Figure 6.6, in 1987, the electricity consumption of residents was 26.96 billion kWh (1 degree = 1 kW? hours), and in 1996, the number of households soared to 113.1 billion kWh in 1998...
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24-11-2018
Communication Cable Since the 1980s, due to the advantages of large current-carrying capacity of fiber-optic cables, copper cables have been continuously replaced in communication trunks, and applications have been rapidly promoted. However, the conversion of electrical energy into light energy and the input of the user's line still requires the use of large amounts of copper. ...
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16-11-2018
Motor manufacturing High-conductivity and high-strength copper alloys are widely used in motor manufacturing. The main copper parts are the stator, the rotor and the shaft head. In large motors, the windings are cooled by water or hydrogen, called dual water internal cooling or hydrogen cooling motors, which require large lengths of hollow conductors. The motor is a large consu...
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10-11-2018
Power transmission Power transmission requires a large amount of high-conductivity copper, mainly used for power wires and cables, bus bars, transformers, switches, connector components and connectors. During the transmission of wires and cables, power is wasted due to resistance heating. From the perspective of energy saving and economy, the "best cable section" standard is cu...
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27-10-2018
1, By alloy According to the alloy system, it can be divided into non-alloy copper and alloy copper. Non-alloy copper includes high-purity copper, tough copper, deoxidized copper, oxygen-free copper, etc. It is customary to call non-alloy copper copper or pure copper. It is called red copper, while other copper alloys are alloy copper. China and Russia divide alloy copper into ...
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19-10-2018
Bronze is the earliest alloy used in China and has a history of more than 3,000 years. Bronze originally refers to copper-tin alloy. Copper alloys other than brass and white copper are called bronze, and often the name of the first major additive element in front of the bronze name. Tin bronze has good casting performance, anti-friction performance and good mechanical propertie...
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13-10-2018
Brass is an alloy of copper and zinc. If only brass made of copper and zinc is called ordinary brass. Brass is often used in the manufacture of valves, water pipes, air-conditioning inside and outside machine connecting pipes and radiators. If it is a plurality of alloys composed of two or more elements, it is called special brass. Such as copper alloy composed of lead, tin, ma...
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