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US 12,148,545 B2Granted
Conductive wire for electrical properties testing and method for producing the same
AssigneeSWCC Corporation
InventorsYoshihiro Sakagami, Go Odachi, Rikuya Watanabe, Tsutomu Koizumi, Ryuichi Arai
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Abstract
A conductive wire for electrical properties testing having high hardness and conductivity, which is composed of a copper alloy, and includes in its outer periphery portion a fibrous structure extending at an angle of 0.5 to 20 degrees with respect to the length direction of the conductive wire.
Claims6
A conductive wire for electrical properties testing, the conductive wire comprising:
- a copper alloy containing 0.1 to 30 mass % of silver, with a remainder being copper and unavoidable impurities, wherein
- an outer periphery portion of the conductive wire includes a fibrous structure extending in a direction at an angle of 0.5° to 20.0° with respect to a length direction of the conductive wire, and
- the conductive wire has a Vickers hardness of 300 HV or more and a conductivity of 57% IACS or more.
A method for producing a conductive wire for electrical properties testing, the method comprising:
- preparing a copper alloy wire containing 0.1 to 30 mass % of silver, with a remainder being copper and unavoidable impurities;
- and
- twisting the copper alloy wire by, while the copper alloy wire is conveyed in a conveyance direction and is pushed in a predetermined direction, rotating the copper alloy wire in a circumferential direction of the copper alloy wire, wherein
- in the twisting the copper alloy wire, an angle between the copper alloy wire having been pushed and the conveyance direction of the copper alloy wire is set to 10 to 70°, and a speed of the rotating in the circumferential direction relative to a conveyance speed of the copper alloy wire is set to 1 to 60 rotations/mm.
1 more element
Dependencies are inferred from the claim text.