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Copper alloy sheet, connector comprising copper alloy sheet, and method for producing copper alloy sheet

A manufacturing method and technology of copper alloys, applied in the direction of contact parts, etc., can solve problems such as deviation of spring characteristics, cracks, and inability to be used as terminals or connectors, and achieve the effect of excellent bending workability and excellent strength.

Active Publication Date: 2017-02-22
FURUKAWA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, conventional materials with anisotropy in bending, strength, and work hardening exponent will cause cracks in both GW and BW bending, and cannot be used as terminals or connectors
In addition, if it is anisotropic, the spring characteristics after processing will also vary depending on the bending processing direction, and it cannot be used as a terminal or connector

Method used

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  • Copper alloy sheet, connector comprising copper alloy sheet, and method for producing copper alloy sheet
  • Copper alloy sheet, connector comprising copper alloy sheet, and method for producing copper alloy sheet
  • Copper alloy sheet, connector comprising copper alloy sheet, and method for producing copper alloy sheet

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Embodiment 1～ Embodiment 16、 comparative example 1～ comparative example 14

[0116] For each of the Examples and Comparative Examples, an alloy raw material containing the respective amounts of Ni, Si, and optionally additional elements shown in Table 1, and the balance consisting of Cu and unavoidable impurities was melted in a high-frequency melting furnace. , cooled at a cooling rate of 0.1° C. / sec to 100° C. / sec and cast [Step 1] to obtain an ingot.

[0117] This ingot is subjected to ingot rolling [process 2] in which cold rolling is performed at a processing rate of 1.0% or more and the number of passes is 1 or more. Thereafter, the ingot is subjected to a homogenization heat treatment at 800° C. to 1100° C. for 5 minutes to 20 hours [step 3]. Thereafter, hot rolling (step 4) is performed as hot working at 800° C. to 1100° C., and water quenching (step 5) is further performed to obtain a hot-rolled sheet. Next, face cutting [step 6] is performed on the surface of the hot-rolled sheet to remove the oxide film. Thereafter, cold rolling 1 [process...

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Abstract

Provided is a copper alloy sheet having a composition containing 1.0 to 6.0 mass% Ni, and 0.2 to 2.0 mass% Si, further containing a total of 0 to 3.000 mass% of at least one type of element selected from the group comprising B, Mg, P, Cr, Mn, Fe, Co, Zn, Zr, Ag and Sn, with the remainder comprising copper and unavoidable impurities, wherein: the strain hardening exponent, nRD, in the rolling direction, RD, is 0.010 to 0.150; and the ratio, nRD / nTD, between nRD and the strain hardening component, nTD, in the transverse direction, TD, is 0.500 to 1.500. On the surface parallel to the rolled surface of the copper alloy sheet at a depth D, the average value, Sa, of the area ratio, S(D), of crystal grains in which the angle of deviation from cube orientation {001}<100> is within 15 degrees, is 5.0 to 30.0%. Thus, the copper alloy sheet has: excellent bendability; excellent strength; a low deflection coefficient as a spring property after bending work; and little specificity for each of the properties of bendability, strength and deflection coefficient in the rolling direction and transverse direction.

Description

technical field [0001] The invention relates to a copper alloy plate and a manufacturing method thereof. In particular, it relates to a copper alloy sheet material excellent in bending workability, strength, and spring characteristics after bending, and a manufacturing method thereof, the copper alloy sheet material being suitable for use as a lead frame, connector, and terminal material for automotive parts and electric / electronic equipment , relays, switches, sockets, etc. Background technique [0002] Among the characteristic items required for copper alloy sheet materials used in automotive parts, lead frames for electrical / electronic equipment, connectors, terminal materials, relays, switches, sockets, etc., there are electrical conductivity, proof stress ( Yield stress), tensile strength, bending processability, etc. In recent years, this required characteristic has been improved along with miniaturization, weight reduction, higher functionality, higher density mount...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C9/00C22C9/02C22C9/04C22C9/05C22C9/10C22F1/08H01R13/03C22F1/00
CPCC22C9/00C22C9/02C22C9/04C22C9/05C22C9/06C22C9/10C22F1/00C22F1/08H01R13/03
Inventor 矶松岳己樋口优
Owner FURUKAWA ELECTRIC CO LTD
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