Copper-clad aluminum alloy integrated grounding cable

Abstract

The invention discloses a copper-clad aluminum alloy comprehensive ground cable, which includes a centrally located round copper conductor, 5 to 7 trapezoidal copper conductors and 10 to 14 cop-clad aluminum conductors, the 5 to 7 trapezoidal copper conductors are stranded on the outer surface of the round copper conductor to form an intermediate conductive layer, and the outer surface of the non-soldering type copper alloy sheath is provided with a metal passivation layer, the corners at both ends of the long bottom edge of the trapezoidal copper conductor are circular arc corners, and the stranding directions of the trapezoidal copper conductor and the copper-clad aluminum conductor are opposite. The copper, white copper, tin, nickel, beryllium, titanium and composite rare earth are placed in a low-frequency electric furnace, heated to 1100-1200 DEG C, and continuously cast horizontally to form a hollow billet, and the composite rare earth is formed by mixing lanthanum, gadolinium and yttrium according to a weight ratio of 10: 4: 1; the cast hollow billet is extruded into a blank tube. The copper-clad aluminum alloy comprehensive ground cable of the invention improves the plasticity of the metal, greatly improves the elongation coefficient of the metal, is favorable for the strength and hardness of the metal to decrease, improves the plasticity and toughness, is more convenient for the stretching processing of the stretching die, prolongs the service life and the conductivity, and greatly enhances the corrosion resistance.

Description

technical field [0001] The invention relates to a railway cable, in particular to a copper-clad aluminum alloy comprehensive grounding cable. Background technique [0002] As the speed of railway trains is getting faster and faster, higher requirements are put forward for the safety and reliability of railway electrical equipment and personal safety protection. Railway copper-clad aluminum alloy comprehensive grounding cables are used on railways for various metal facilities and All kinds of ground wires are connected to ensure good connection between electrical equipment and the earth, and the ground potential remains consistent. The usual subway copper-clad aluminum alloy integrated grounding cable is a simple copper stranded wire, which can conduct electricity to release static electricity. However, the railway copper-clad aluminum alloy integrated grounding cable is of poor quality, poor wear resistance and corrosion resistance, and is safe. Wear and tear will occur aft...

AI Technical Summary

Problems solved by technology

The usual subway copper-clad aluminum alloy integrated grounding cable is a simple copper stranded wire, which can conduct electricity to release static electricity. However, the railway copper-clad aluminum alloy integrated grounding cable is of poor quality, poor wear resistance and corrosion resistance, and is safe. Wear and tear will occur after long-term use, resulting in a short service life of the railway copper-clad aluminum alloy integrated grounding cable

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