Copper-alloy wire rod and manufacturing method therefor

A manufacturing method, copper alloy technology, applied in the direction of metal/alloy conductors, cable/conductor manufacturing, conductive materials, etc., can solve the problems of increased tensile strength, decreased elongation, decreased strength, etc., and achieves excellent bending fatigue resistance Effect

Active Publication Date: 2014-11-26
FURUKAWA ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, in general, the tensile strength of processed metals or alloys increases and the elongation decreases,

Method used

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  • Copper-alloy wire rod and manufacturing method therefor
  • Copper-alloy wire rod and manufacturing method therefor
  • Copper-alloy wire rod and manufacturing method therefor

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Embodiment

[0095] Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to the examples.

[0096] [Example and Comparative Example of Round Wire Rod]

[0097] For casting materials containing 0.5% by mass to 4% by mass of Ag and / or 0.05% by mass to 0.3% by mass of each content selected from the group consisting of Sn, Mg, Zn, In, Ni, Co, Zr and Cr Copper alloys of examples of the present invention having at least one of the various alloy compositions shown in Tables 1 to 3 and the remainder being composed of Cu and unavoidable impurities, and various alloy compositions shown in Tables 1 to 3 The copper alloys of comparative examples were respectively cast into diameters by horizontal continuous casting method drawing blanks.

[0098] Cold working (wire drawing), intermediate annealing, finishing annealing, and finishing cold working (wire drawing) were performed on the drawn billet (total processing rate of the ...

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Abstract

This copper-alloy wire rod and a manufacturing method therefor make it possible to inexpensively provide a copper-alloy wire rod that exhibits excellent elongation and flex-fatigue-resistance properties and can be used, for example, as a magnet wire. Said copper-alloy wire rod contains, by mass, 0.5% to 4% silver and 0.05% to 0.3% of each of at least one element selected from the group consisting of tin, manganese, zinc, indium, nickel, cobalt, zirconium, and chromium, with the remainder comprising copper and unavoidable impurities. This copper-alloy wire rod has a diameter or thickness of at most 0.1 mm and exhibits a nano-indentation hardness of at least 1.45 GPa in a region extending from the outer surface of the wire rod to a depth of at least 5% of the diameter or thickness of the wire rod, a nano-indentation hardness of less than 1.45 GPa in a central section, a tensile strength of at least 350 MPa, and an elongation of at least 7%.

Description

technical field [0001] The invention relates to a copper alloy wire and a manufacturing method thereof, in particular to an ultra-fine copper alloy wire for a magnetic wire and a manufacturing method thereof. Background technique [0002] With the development of electronic equipment, the miniaturization of electronic components is being promoted, and the demand for ultra-fine copper alloy wire (round wire) with a wire diameter of 0.1mm or less is increasing. For example, microspeaker coils used in mobile phones, smartphones, etc. are manufactured by winding extremely thin wires (magnet wires) with a wire diameter of 0.1 mm or less into a coil shape. [0003] In this wire winding process, toughness (elongation) is required as workability capable of forming a turn, and pure copper excellent in toughness has conventionally been used. However, pure copper has a problem of low fatigue resistance due to coil vibration because of its excellent electrical conductivity but low stren...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22F1/08H01B1/02H01B5/02H01B13/00C22F1/00
CPCH01B1/026C22F1/08C22C9/00B22D21/00
Inventor 高泽司
Owner FURUKAWA ELECTRIC CO LTD
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