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Copper alloy for terminals and connectors with excellent bending workability and method for producing the same

A copper alloy and connector technology, applied in the direction of metal/alloy conductors, conductors, conductive materials, etc., can solve the problem of not meeting the strength standard, and achieve the effects of excellent elastic bending limit, excellent bending workability, and reduced process cost.

Active Publication Date: 2022-07-08
株式会社豊山
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the properties of this alloy are not significantly different from those of traditional brass, nor does it meet the strength standards currently required in the industrial field.

Method used

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  • Copper alloy for terminals and connectors with excellent bending workability and method for producing the same
  • Copper alloy for terminals and connectors with excellent bending workability and method for producing the same
  • Copper alloy for terminals and connectors with excellent bending workability and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 14

[0059] The samples of Examples 1-14 were prepared with the ingredients listed in Table 1. The manufacturing method of a sample is as follows.

[0060] According to the components listed in Table 1, alloying elements including copper were mixed in units of 1 kg and dissolved in a high-frequency melting furnace to prepare a thickness of 20 mm, a width of 50 mm, and a length of 160 to 180 mm ingot. In order to remove defective parts such as rapid cooling parts and shrinkage cavities, each bottom part and top part of the produced ingot was cut by 20 mm, using the ingot of the middle part, at 850 ° C, in a box furnace for 2 Homogenization heat treatment was performed for 1 hour, and then hot rolling was performed at a reduction ratio of 90%. After the hot rolling is completed, water cooling is performed immediately to prevent the precipitation of solute elements. After the hot rolling is completed, the product is immediately water-cooled to dissolve the solute elements. Before ...

experiment example

[0069] A method for analyzing the properties of copper alloy samples prepared according to the Examples and Comparative Examples will be described herein.

[0070]The tensile strength was measured by ZwickRoell's Z100 universal testing machine Z100 according to KS B0802 standard, the electrical conductivity was measured according to KS D0240, and the elastic bending limit was measured according to KS D5202.

[0071] Bending workability was measured in accordance with KSB 0804 (Bending Test Methods for Metallic Materials).

[0072] The surface of the bent portion of the sample was subjected to a bending test, and was observed and evaluated with an optical microscope. The shape or defect outside the bent portion was observed and evaluated as A grade, B grade, C grade and D grade as follows. If it is Class D, the sample cannot be used as terminal and connector material.

[0073] Bending workability evaluation grade:

[0074] A: good

[0075] B: Small folds

[0076] C: Large ...

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Abstract

The present disclosure relates to a copper alloy for terminals and connectors having excellent bending workability, strength and elastic limit, and a preparation method thereof. Specifically, the present disclosure relates to a copper alloy including copper (Cu), zinc (Zn), nickel (Ni) and aluminum (Al). Compared to existing brass materials as terminal and connector materials, the copper alloys described in the present disclosure have superior strength, bending workability, and elastic limit, and can be produced at extremely low cost compared to phosphor bronze materials.

Description

technical field [0001] The present disclosure relates to a copper alloy for terminals and connectors having excellent bending workability and strength and having a high elastic bending limit, and a method for producing the same. Specifically, the present disclosure relates to a copper alloy including copper (Cu), zinc (Zn), nickel (Ni) and aluminum (Al). Compared with traditional brass materials for terminals and connectors, the copper alloys provided by the present disclosure have good strength and bending workability and high elastic bending limit, and can be produced at a low cost relative to phosphor bronze materials . Background technique [0002] In recent years, in the field of electronic parts and automobile parts, due to the rapid development of electronic products and automobile technology, the miniaturization of parts has been rapidly developed, so the lightness, thinness, shortness and tightness of main parts are essential. As a material for electronic parts an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/04C22F1/08H01B1/02
CPCH01B1/026C22C9/04C22F1/08
Inventor 崔俊宁李诗潭郭源信
Owner 株式会社豊山