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High-strength and high-electroconductivity copper alloy pipe, bar, and wire rod

By adding Co, P and Sn to high-strength and high-conductivity copper alloys, and using hot extrusion and heat treatment processes to form fine precipitates, the problems of oxidation loss and adhesion of existing copper alloys during heat treatment are solved, and low-cost, Highly conductive and strong materials are produced.

Active Publication Date: 2011-01-26
MITSUBISHI SHINDOH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, in this copper material, the strength is insufficient

Method used

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  • High-strength and high-electroconductivity copper alloy pipe, bar, and wire rod
  • High-strength and high-electroconductivity copper alloy pipe, bar, and wire rod
  • High-strength and high-electroconductivity copper alloy pipe, bar, and wire rod

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Embodiment Construction

[0040] The high-performance copper pipe / rod / wire according to the embodiment of the present invention will be described. In this invention, the 1st invention alloy, the 2nd invention alloy, and the 3rd invention alloy of the alloy composition in the high-performance copper pipe / rod / wire concerning Claim 1 to Claim 4 are proposed. In this specification, when expressing an alloy composition, it is assumed that an element symbol enclosed in parentheses such as [Co] indicates the content value (mass%) of the element. In addition, the first to third invention alloys are collectively referred to as invention alloys.

[0041] The alloy composition of the first invention alloy is as follows: 0.13 to 0.33 mass% (preferably 0.15 to 0.32 mass%, more preferably 0.16 to 0.29 mass%) of Co, 0.044 to 0.097 mass% (preferably 0.048 to 0.094 mass%, more preferably 0.051 mass%) ~0.089mass%) of P, 0.005~0.80mass% (preferably 0.005~0.70mass%), do not need a particularly large strength, but when hi...

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Abstract

Disclosed are high-strength and high-electroconductivity copper alloy pipe, bar, and wire rod. The high-strength and high-electroconductivity copper alloy pipe, bar, and wire rod are produced by a process comprising providing an alloy comprising 0.13 to 0.33% by mass of Co, 0.044 to 0.097% by mass of P, 0.005 to 0.80% by mass of Sn, and 0.00005 to 0.0050% by mass of O with the balance consisting of Cu and unavoidable impurities, Co and P satisfying a requirement of 2.9 <= ([Co] - 0.007) / ([P] - 0.008) <= 6.1, wherein [Co] represents the content of Co, mass%; and [P] represents the content of P, mass%, and hot extruding the alloy. Homogeneous precipitation of Co and P compounds and dissolution of Sn as a solid solution can improve the strength and electroconductivity of the high-strength and high-electroconductivity copper alloy pipe, bar, and wire rod. Further, since the high-strength and high-electroconductivity copper alloy pipe, bar, and wire rod are produced by hot extrusion, a reduction in cost can be realized.

Description

technical field [0001] The present invention relates to high-strength and high-conductivity copper alloy tubes / rods / wires produced by a process including hot extrusion. Background technique [0002] Historically, copper has been used as a wiring material for connectors, relays, electrodes, contacts, contact wires, connection terminals, welding nozzles, rotor bars used in motors, harnesses, robots or aircrafts by taking advantage of its excellent electrical and thermal conductivity. Used in various industrial fields. For example, it is also used in harnesses of automobiles. However, due to global warming, reduction in vehicle body weight is required in order to improve fuel efficiency of automobiles. However, due to the high degree of informationization, electronics and hybridization of automobiles, the weight of harnesses tends to increase. In addition, copper is an expensive metal, and the automotive industry has requirements for cost reduction. Therefore, if a copper wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C9/00C22C9/02C22C9/04C22F1/08H01B1/02H01B5/02H01B5/06C22F1/00
CPCC22C9/06H01B1/026C22C9/02C22F1/08
Inventor 大石惠一郎
Owner MITSUBISHI SHINDOH CO LTD
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