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Copper alloy with outstanding comprehensive performance and application thereof

A comprehensive performance, copper alloy technology, used in metal/alloy conductors, conductive materials, conductive materials, etc., can solve problems such as the inability to meet the needs of miniaturization applications and the decline in bending performance

Active Publication Date: 2018-12-18
NINGBO POWERWAY ALLOY MATERIAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The Cu-Ni-Sn alloy represented by the C19025 alloy is currently a commonly used alloy with both performance and cost advantages. However, when the yield strength of the alloy is ≥550MPa, the bending performance is significantly reduced, which cannot meet the needs of miniaturization applications.

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  • Copper alloy with outstanding comprehensive performance and application thereof
  • Copper alloy with outstanding comprehensive performance and application thereof

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Embodiment Construction

[0065] The present invention is described in further detail below in conjunction with embodiment.

[0066] According to the copper alloy ingredients shown in each embodiment in Table 1, semi-continuous casting was used for smelting at 1120° C. to 1200° C. to manufacture ingots with a specification of 440mm×250mm. After the above ingot was kept at 850° C. for 5 hours, it was hot-rolled to have a plate thickness of 16.5 mm. Then, due to the descaling of the surface, it is necessary to implement face milling. After the hot-rolled plate and the lower milled face are 0.5mm to 1.0mm, the thickness of the hot-rolled plate reaches 15mm; after that, a plate with a thickness of 2mm is obtained through one cold rolling; The cold-rolled plate is heated to 400°C and kept for 8 hours for the first aging. Then, the plate after the first aging is subjected to the second cold rolling to 0.33 mm, and then the second aging treatment is carried out at 360° C. for 8 hours. Finally, finish rollin...

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Abstract

The invention discloses a copper alloy with an outstanding comprehensive performance. The copper alloy comprises the following components in percentage by weight: 0.4-2.0% of Ni, 0.2-2.5% of Sn, 0.02-0.25% of P, 0.001-0.5% of Si, and the balance Cu and inevitable impurities. The yield strength of the copper alloy is not less than 550MPa; the conductivity of the copper alloy is not less than 38% IACS; the bending processing performance meets that the R / t in GW direction is not greater than 1, and the R / t in BW direction is not greater than 2; the stress residue rate is not less than 75% after the copper alloy is subjected to temperature maintaining for 1000h under the temperature of 150 DEG C, so that the stress release resistance is outstanding. The alloy can be processed into slab strips,bars, wires, etc. based on different application demands; and the alloy can be widely applied to connectors such as electrical apparatus, automobile and communication apparatus, or terminals or switch parts.

Description

technical field [0001] The invention relates to the technical field of copper alloys, in particular to a copper alloy with excellent comprehensive performance and its application. Background technique [0002] Copper and copper alloy materials with high strength and good electrical conductivity have long been ideal raw materials for connectors, terminals and switches. In recent years, with the development of consumer electronics and automotive electronic components towards miniaturization, light weight and high integration, higher requirements have been placed on the comprehensive performance of raw materials. [0003] Due to the miniaturization of the connector, the cross-sectional area of ​​the connector is reduced. In order to compensate for the reduction in contact pressure and electrical conductivity caused by the reduction in the cross-sectional area, the metal material used to make the connector is required to have higher strength and electrical conductivity. With th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C9/02C22C9/10H01H1/025H01B1/02C22F1/08
CPCH01B1/026H01H1/025C22C9/02C22C9/06C22C9/10C22F1/08
Inventor 杨朝勇李宁李建刚赵红彬杨泰胜周耀华
Owner NINGBO POWERWAY ALLOY MATERIAL
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