Cu-ni-si based alloy with excellent bendability

A cu-ni-si, bending technology, applied in the direction of metal/alloy conductors, conductive materials, conductive materials, etc., can solve the problems of poor bendability, low alloy strength, etc., to achieve excellent bending workability, no wrinkles The effect of the appearance of the curved part

Active Publication Date: 2012-09-12
JX NIPPON MINING & METALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In general, if the strength of the alloy is increased, the bendability becomes poor, and the strength of the alloy with good bendability is low

Method used

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  • Cu-ni-si based alloy with excellent bendability
  • Cu-ni-si based alloy with excellent bendability
  • Cu-ni-si based alloy with excellent bendability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0073] The following shows the results of the production examples and characteristic tests of the Cu-Ni-Si alloy of the present invention, but it should be understood that they are provided for a better understanding of the present invention and its advantages, and do not mean that the present invention limited.

[0074] (Manufacturing method)

[0075] Copper alloys composed of various components are melted in a high-frequency melting furnace, and an ingot with a thickness of 20 mm, a width of 50 mm, and a length of 150 mm is cast. Next, in order to fully dissolve Ni and Si in the matrix, the ingot is heated at a heating temperature of 800° C. Calender until the thickness is 8mm. Next, face cutting is performed to remove scale on the surface, and then rolled to a predetermined thickness.

[0076] Next, after performing solution treatment at a temperature of 850 to 950°C for 10 minutes depending on the plate thickness, each average cooling rate in the ranges of solution temp...

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PUM

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Abstract

Disclosed is a Cu-Ni-Si alloy strip which contains 0.8-4.6 mass% Ni and 0.3-1.6 mass% Si and may contain one or more optional elements selected from Sn, Zn, Fe, Co, Cr, Mg, and Mn in a total amount of 2.0 mass% or less, and in which the number of shear bands in the surface layer is up to 1.0 time the number of shear bands in the sheet-thickness center part. The alloy strip has high strength and has an excellent appearance after being bent. Preferably, the number of shear bands in the surface layer is 10 or less per 10,000 [mu]m2, and the number of 1-10 [mu]m precipitate particles in the surface layer is 1.0102 or less per mm2, the number of 1-10 [mu]m precipitate particles in the surface layer being up to 1.0 time the number thereof in the center part.

Description

technical field [0001] The present invention relates to a high-strength copper alloy used for electronic materials such as lead frames and connectors, terminals for automotive connectors, and the like. More specifically, the present invention relates to a high-strength copper alloy that exhibits excellent bending workability and bending appearance without causing wrinkles or cracks in the appearance of the bent portion after bending. Background technique [0002] In recent years, electronic devices such as mobile phones, digital cameras, video cameras, and automotive connectors have been increasingly mounted in high density, and their components have become significantly thinner and shorter. The materials used also have a clear tendency to become thinner, and higher strength materials are required for the materials. In addition, the shape of parts is also becoming more complicated, more severe bending than before is increasingly required, and even more excellent bending wor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C9/00C22C9/02C22C9/04C22C9/05C22C9/10C22F1/08H01B1/02H01B5/02C22F1/00
CPCC22F1/08H01B1/026C22C9/00C22C9/06H01B1/02
Inventor 新见寿宏加藤弘德
Owner JX NIPPON MINING & METALS CO LTD
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