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Titan copper excellent in strength, electric conductivity, bending workability and manufacturing method thereof

A manufacturing method and technology of titanium-copper, applied in conductive materials, conductive materials, conductors, etc., can solve problems such as poor conductivity of titanium-copper, and achieve the effect of excellent bending workability and excellent conductivity

Inactive Publication Date: 2012-05-16
JX NIPPON MINING & METALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is a problem that the conductivity (conductivity) of titanium copper (about 12% IACS) is worse than that of high beryllium copper alloy (about 20% IACS)

Method used

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  • Titan copper excellent in strength, electric conductivity, bending workability and manufacturing method thereof
  • Titan copper excellent in strength, electric conductivity, bending workability and manufacturing method thereof
  • Titan copper excellent in strength, electric conductivity, bending workability and manufacturing method thereof

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Embodiment

[0056] Using electrolytic copper as raw material, cast various ingots (width 60mm×thickness 30mm) shown in Table 1 with a high-frequency vacuum melting furnace, hot-roll at 850°C until the thickness is 8mm, and scrape the oxide scale on the surface After that, cold rolling is performed. After that, solution treatment was performed at the temperature shown in Table 1. Furthermore, the cooling rate and time from the aging temperature (maximum attained temperature) to 300°C were set as shown in Table 1. After aging treatment, cold rolling after aging was carried out at the working degree shown in Table 1, so that the final plate thickness 0.1mm.

[0057] Evaluation of various characteristics was performed on each titanium-copper sample obtained as above. Yield strength σ0.2 was measured using a tensile tester according to JIS Z2241. The electrical conductivity was measured in accordance with JIS H0505. Elasticity (elastic limit value) was measured in accordance with JIS H3130...

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Abstract

The invention provides a titanium copper and its producing method. The titanium copper is excellent in strength, conductivity and bending resistance and contains 0.5-4.5 % of Ti by mass, Cu and unavoidable impurities. The area ratio of a grain boundary reaction phase with the Ti concentration thereof smaller than 8.5 % by mass to a stable phase with the Ti concentration greater than 15 % by mass, namely the area ratio of the grain boundary reaction phase to the stable phase, is more than 14. The yield strength sigma 0.2 is more than 850MPa and the conductive rate is more than 18% IACS. During the W bending test specified in JISH3130 in a direction at a right angle with respect to the rolling direction, the ratio of the minimum bending radius ( MBR, unit: mm ) without generating cracks to the plate thickness ( T, unit: mm ) is below 1.

Description

technical field [0001] The present invention relates to a titanium-copper alloy and a manufacturing method thereof, and relates to a titanium-copper alloy suitable for conductive elastic materials (ばね material) such as connectors, terminals, relays, and switches, and a manufacturing method thereof. Background technique [0002] In recent years, along with the miniaturization of electronic equipment, connectors of electronic equipment are required to be significantly smaller and thinner, and a complex bending process is performed on the connector. Therefore, metal materials used in connectors are required to have high strength, electrical conductivity, and high bending workability. [0003] High-beryllium copper alloy (JIS C1720) is used as a connector material excellent in strength, conductivity, and bendability. However, beryllium compounds are toxic, and the manufacturing process is complicated and expensive, so alternative materials have been sought. [0004] As an alter...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22F1/08
CPCB21B3/00B21B2003/005C22C9/00C22F1/002C22F1/08H01B1/026
Inventor 川崎由记新见寿宏
Owner JX NIPPON MINING & METALS CO LTD
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