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Copper alloy with excellent hot rolling performance and manufacturing method thereof

A manufacturing method and copper alloy technology, applied in the field of copper alloy manufacturing, can solve problems such as ingot cracking and hot rolling interruption

Inactive Publication Date: 2022-01-28
TONGLING NON FERROUS METAL GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, during hot rolling, the ingot is at a higher temperature, and the heating stress superimposes the casting stress, which is also easy to induce cracking of the ingot, resulting in interruption of hot rolling.

Method used

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  • Copper alloy with excellent hot rolling performance and manufacturing method thereof

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Experimental program
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Embodiment

[0055] Embodiment: according to the copper alloy batching shown in each embodiment composition of table 1, adopt semi-continuous casting to carry out melting and casting under 1160 ℃~1220 ℃, the manufacturing specification is the ingot of 230mm*640mm. After the above ingot was kept at 960°C for 5 hours, it was hot rolled to a thickness of 14.5 mm. After milling 0.5mm on the upper and lower surfaces of the billet, the thickness of the strip reaches 13.5mm; after that, the strip is rolled to a thickness of 2mm by a rough rolling mill; then the strip is heated to 480°C, kept for 8 hours for aging treatment, and then rolled to a thickness of 2mm. 0.8mm, heat treatment for 30s in a continuous annealing furnace at a temperature of 600°C, then finish rolling to 0.25mm, and then annealed at a low temperature in a continuous annealing furnace at a temperature of 350°C to obtain a finished strip with a thickness of 0.25mm.

[0056] For the prepared strip samples of the alloys of the fiv...

Embodiment 2

[0062] This embodiment is roughly the same as the method provided in Example 1, the main difference is that the contents of Ni, Sn, Mg, P, O are different, wherein Ni: 0.85wt%, Sn: 1.52wt%, Mg: 0.020wt %, P: 0.08 wt%, O: 0.0007 wt%.

Embodiment 3

[0064] This embodiment is roughly the same as the method provided in Example 1, the main difference is that the contents of Ni, Sn, Mg, P, O are different, Ni: 0.88wt%, Sn: 1.61wt%, Mg: 0.016wt% , P: 0.09 wt%, O: 0.0005 wt%.

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Abstract

The invention discloses a copper alloy with excellent hot rolling performance and a manufacturing method thereof, the copper alloy comprises the following components in percentage by weight: 0.6-1.0 wt% of Ni, 1.0-2.0 wt% of Sn, 0.01-0.03 wt% of Mg, 0.06-0.10 wt% of P, less than or equal to 0.0010 wt% of O, and the balance of Cu, and inevitable impurity alloy, oxygen-free copper is used as a matrix, the oxygen content is controlled to be less than or equal to 0.0010 wt%, the trace element Mg is added, the alloy has excellent hot workability, in the process of melting casting and hot rolling, the ingot has no cracking phenomenon and has excellent hot workability, the yield strength Rp of the alloy is larger than or equal to 520 Mpa, the ductility A11.3 is larger than or equal to 6%, the electric conductivity is larger than or equal to 38% IACS, the bending machining performance (GW and BW directions) R / t is smaller than or equal to 1, the stress residual rate is larger than or equal to 85% after heat preservation is conducted for 1000 hours at the temperature of 150 DEG C, and a plate strip processed by the alloy is widely applied to connectors, terminals or switch parts of electrical, automobile and communication devices and the like.

Description

technical field [0001] The invention relates to the field of copper alloy production, in particular to a copper alloy with excellent hot rolling performance and a production method thereof. Background technique [0002] In recent years, electrical and electronic components such as connectors have gradually become more integrated, miniaturized and lightweight, and the requirements for thinning copper or copper alloy strips as raw materials have also become higher and higher. The generation of Joule heat caused by electrification requires good electrical conductivity and high strength that can withstand the stress applied during the assembly or operation of electrical and electronic equipment. In addition, electrical and electronic components such as connectors are usually formed by bending , Therefore, it is also required to have excellent bending workability and excellent stress relaxation resistance. [0003] Cu-Ni-Sn alloy is a representative copper alloy having both high...

Claims

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Application Information

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IPC IPC(8): C22C9/02C22C1/03C22F1/08C21D1/26C21D1/18C21D8/02H01B1/02
CPCC22C9/02C22C1/03C22F1/08C22F1/002C21D1/26C21D8/0247C21D8/0226H01B1/026Y02P10/20
Inventor 易志辉
Owner TONGLING NON FERROUS METAL GROUP CORP
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