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Copper alloy plate with excellent electrical conductivity and deflection coefficient

A copper alloy plate and electrical conductivity technology, applied in the field of electronic parts, can solve the problems of stress, that is, contact force reduction, contact resistance increase, etc., and achieve the effects of high conductivity, high strength, and high deflection coefficient

Active Publication Date: 2020-01-14
JX NIPPON MINING & METALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the warped copper alloy plate is kept at high temperature for a long time, the stress, that is, the contact force, will decrease due to the stress relaxation phenomenon, resulting in an increase in the contact resistance.

Method used

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  • Copper alloy plate with excellent electrical conductivity and deflection coefficient
  • Copper alloy plate with excellent electrical conductivity and deflection coefficient
  • Copper alloy plate with excellent electrical conductivity and deflection coefficient

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0072] Examples of the present invention are shown together with comparative examples below, but these examples are provided for better understanding of the present invention and its advantages, and are not intended to limit the invention.

[0073] After adding alloying elements to molten copper, it is cast into an ingot with a thickness of 200 mm. The ingot was heated at 950° C. for 3 hours, and hot-rolled to form a plate with a thickness of 15 mm. After grinding and descaling the surface of the hot-rolled sheet, annealing and cold-rolling are repeated, and the final cold-rolling is finished to a predetermined product thickness. Finally, stress relief annealing is performed.

[0074]In hot rolling, the maximum value (Rmax) and the average value (Rave) of the working degree per pass are varied in various ways.

[0075] The annealing (final recrystallization annealing) before final cold rolling used a batch furnace, and the heating time was set to 5 hours, and the temperature...

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Abstract

　Provided are: a copper alloy sheet having high strength, high electro-conductivity, high bending deflection coefficient and outstanding stress release characteristics; and high-current electronic components and heat-radiating electronic components using this copper alloy sheet.　This copper steel sheet contains 0.01-0.50 mass% of a total of Zr and / or Ti, with the remainder being made up of copper and unavoidably impurities, has a tensile strength of 350MPa or more, and the A value determined according to the following formula is 0.5 or more.　A = 2X(111)+X(220)-X(200)　X(hkl)= I(hkl) / I0(hkl) (where I(hkl) and I0(hkl) are the diffraction integral strengths of the rolling plane obtained by X-ray diffraction and the (hkl) plane obtained with respect to the copper powder respectively.)

Description

technical field [0001] The present invention relates to a copper alloy plate and an electronic component for conducting electricity or cooling, and particularly relates to a terminal, a connector, a relay, a switch, a socket, a bus bar, a lead frame, a cooling plate, etc., which are mounted on motors / electronic equipment, automobiles, etc. A copper alloy plate used as a raw material of an electronic component, and an electronic component using the copper alloy plate. In particular, it is suitable for the use of high-current electronic components such as high-current connectors and terminals used in electric vehicles and hybrid vehicles, or electronic components for heat dissipation such as liquid crystal frames used in smartphones and tablet PCs. Copper alloy plate for parts and electronic parts using the copper alloy plate. Background technique [0002] In electrical / electronic equipment, automobiles, etc., parts for conducting electricity or heat such as terminals, connec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C9/02C22C9/04C22C9/05C22C9/06C22C9/10C22F1/08C22F1/00
CPCC22C9/00C22F1/00C22F1/08C22C9/02C22C9/04C22C9/05C22C9/06
Inventor 波多野隆绍
Owner JX NIPPON MINING & METALS CORP