Aluminum alloy wire, aluminum alloy stranded wire, covered electric wire, wire harness and manufacturing method of aluminum alloy wire

Abstract

The present invention provides an aluminum alloy wire material that has high strength and flexibility and is less prone to breakage when subjected to severe bending such as 180°. The aluminum alloy wire rod of the present invention has the following composition: Mg: 0.1-1.0 mass%, Si: 0.1-1.0 mass%, Fe: 0.01-1.40 mass%, Ti: 0.000-0.100 mass%, B: 0.000-0.030 mass%, Cu: 0.00-1.00 mass%, Ag: 0.00-0.50 mass%, Au: 0.00-0.50 mass%, Mn: 0.00-1.00 mass%, Cr: 0.00-1.00 mass%, Zr: 0.00-0.50 mass%, Hf: 0.00-0.50 mass%, V: 0.00-0.50 mass%, Sc: 0.00-0.50 mass%, Sn: 0.00-0.50 mass%, Co: 0.00-0.50 mass%, Ni: 0.00-0.50 mass%, the balance is Al and unavoidable impurities, the area ratio of the region where the angle formed by the longitudinal direction of the aluminum alloy wire rod and the <111> direction of the crystal is within 20° is 20% to 65%.

Description

technical field [0001] The present invention relates to an aluminum alloy wire used as a wire of an electrical wiring body, an aluminum alloy stranded wire, a covered electric wire, a wire harness, and a method for manufacturing the aluminum alloy wire. Background technique [0002] In the past, terminals made of copper or copper alloy (such as brass) attached to wires including copper or copper alloy wires have been used as electrical wiring bodies for moving bodies such as automobiles, trains, and airplanes, or as electrical wiring bodies for industrial robots. (connector) is called a wire harness (wire harness). Recently, the high-performance and high-functionality of automobiles has been rapidly developed. Along with this, the number of various in-vehicle electrical equipment and control equipment has increased, and the number of electrical wiring bodies used for these equipment has also increased. tendency. In addition, on the other hand, for the sake of environmental...

AI Technical Summary

Problems solved by technology

[0004] However, pure aluminum wires represented by aluminum alloy wires for electric wires (JIS A1060, A1070) are generally poor in tensile durability, impact resistance, bending properties, etc., and this is known.

Therefore, for example, when performing installation work on a vehicle body, it cannot withstand loads accidentally applied by operators, industrial equipment, etc., stretching at the crimping portion of the connecting portion between the wire and the terminal, and tension at the door portion, etc. Repeated stress on the bent part, etc.

In addition, although the tensile strength of the alloyed material can be increased by adding various additive elements, the electrical conductivity may decrease due to the phenomenon of solid solution of the additive elements into the aluminum, and sometimes due to the formation of excess metal Disconnection caused by intermetallic compounds in wire drawing

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