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Copper alloy sheet and manufacturing method for same

A manufacturing method and technology of copper alloys, applied in the direction of metal rolling, metal/alloy conductors, conductive materials, etc., can solve the problems of inability to maintain initial contact pressure, self-heating, stress relaxation, etc.

Active Publication Date: 2013-04-24
FURUKAWA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Third, in high-current connectors, etc., due to the Joule heat generated by the flow of current, there is a problem that the material will self-heat and the stress will relax.
In order to solve the problem that the initial contact pressure cannot be maintained due to the "settlement" in use, the material is required to have excellent stress relaxation resistance characteristics

Method used

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  • Copper alloy sheet and manufacturing method for same
  • Copper alloy sheet and manufacturing method for same
  • Copper alloy sheet and manufacturing method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0164] An alloy containing the elements in the alloy composition column of Table 1 and the remainder consisting of copper and unavoidable impurities was melted in a high-frequency melting furnace, and cast to obtain an ingot (w100mm×l200mm×t40mm). The ingot is subjected to a homogenization heat treatment at 700° C. to 1020° C. for 10 minutes to 10 hours, and then the first high-temperature rolling and the second high-temperature rolling of the following steps A, B, or E are performed.

[0165] (Process A)

[0166] After the first high-temperature rolling (processing rate: 20% to 90%) at a processing temperature of 800°C to 1000°C, water cooling is performed at a cooling rate of 5 to 100°C / second to rapidly cool to room temperature, and then heated to 650 ℃, and at a processing temperature of 450 ℃ ~ 650 ℃ for the second high temperature rolling (processing rate 60% ~ 95%).

[0167] (Process B)

[0168] After the first high-temperature rolling (processing rate 20% to 90%) at ...

Embodiment 2

[0197] An alloy containing the elements in the alloy composition column of Table 2 and the remainder consisting of copper and unavoidable impurities was melted in a high-frequency melting furnace, and cast to obtain an ingot (w100mm×l200mm×t40mm).

[0198] Thereafter, the ingot is subjected to a homogenization heat treatment at 700° C. to 1020° C. for 10 minutes to 10 hours, and then the first high-temperature rolling and the second high-temperature rolling of the following steps C, D, or E are performed. Process E was carried out in the same manner as in Example 1.

[0199] (Process C)

[0200] After the first high-temperature rolling (processing rate: 20% to 90%) at a processing temperature of 700°C to 1000°C, water cooling is performed at a cooling rate of 5 to 100°C / second to rapidly cool to room temperature, and then heated to 550 ℃, and the second high-temperature rolling is performed at a processing temperature of 400°C to 550°C (processing rate 60% to 95%).

[0201] ...

Embodiment 3

[0209] An alloy containing the elements in the alloy composition column of Table 3 and the remainder consisting of copper and unavoidable impurities was melted in a high-frequency melting furnace, and cast to obtain an ingot (w100mm×l200mm×t40mm).

[0210] Thereafter, the ingot is subjected to a homogenization heat treatment at 700° C. to 1020° C. for 10 minutes to 10 hours, and then the first high-temperature rolling and the second high-temperature rolling shown in Steps C, D, or E of Example 2 are performed. High temperature calendering.

[0211] The above-mentioned processes after processing by process C, D or E and after cold rolling are the same as in Example 1, thereby producing the copper alloys of Examples 3-1 to 3-12 of the present invention and Comparative Examples 3-1 to 3-7 The characteristics of the plate samples were investigated in the same manner as in Example 1. The results are shown in Table 3.

[0212] table 3

[0213]

[0214] As shown in Table 3, Inv...

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Abstract

Provided are a copper alloy sheet and a manufacturing method for the same, said sheet having a high Young's modulus and excellent strength, and being suited to electrical / electronic device lead frames, connectors, terminals and the like, and to in-vehicle connectors or terminals, relays or switches, etcetera. The sheet has an alloy composition which contains 0.05-1.0 mass% of one, two or three kinds among Cr, Zr and Ti, with the remainder being copper and unavoidable impurities,under crystal orientation analysis by means of EBSD, in relation to the accumulation in the atomic plane facing in the width direction (TD) of a rolled sheet, the surface area ratio of a region having an atomic plane wherein the angle formed by the TD and a normal line of a (111) surface is not greater than 20 DEG is at least 50%.

Description

technical field [0001] The present invention relates to a copper alloy sheet material and a manufacturing method thereof. Specifically, the present invention relates to a copper alloy plate suitable for automotive components such as lead frames, connectors, terminal materials, relays, switches, sockets, engines, or electrical and electronic equipment. Copper alloy sheet material for components and method for making same. Background technique [0002] The characteristic items required for copper alloy sheet materials used in automotive parts or electrical and electronic equipment such as lead frames, connectors, terminal materials, relays, switches, sockets, engines, etc., such as electrical conductivity, endurance (yielding stress) , tensile strength, Young's modulus, stress relaxation resistance, etc. As trends in recent years, the following three characteristic items can be cited. [0003] First, studies have been made on weight reduction or reduction of used materials b...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C9/01C22C9/02C22C9/04C22C9/05C22C9/06C22C9/10C22F1/08H01B1/02H01R13/03C22F1/00
CPCC22C9/06H01B1/026C22C9/05C22C9/00C22C9/10C22C1/02C22C9/02C22F1/08C21D2201/05C22C9/04Y02P10/20B21B3/00
Inventor 金子洋江口立彦
Owner FURUKAWA ELECTRIC CO LTD
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