Copper alloy material and preparation method thereof

A copper alloy and aging heat treatment technology, applied in the field of copper alloy smelting and processing, can solve problems such as the inability to achieve the best performance of copper-silver alloy materials, and achieve the effects of eliminating structural defects, stable performance and reducing production costs.

Active Publication Date: 2018-11-16
SHANGHAI ELECTRIC CABLE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the methods in the prior art are all ways to achieve copper-silver alloying. By adding a large amount of precious metal silver, the conductivity of the conductor is sacrificed to improve the material strength, and the best performance of the copper-silver alloy material cannot be achieved.

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  • Copper alloy material and preparation method thereof
  • Copper alloy material and preparation method thereof

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Embodiment 1

[0030] The preparation method of the copper-silver alloy material of the present embodiment may further comprise the steps:

[0031] 1) Take oxygen-free copper, silver particles with a purity of 99.9% and a diameter of 0.5 cm as raw materials, and carry out ingredients according to the proportion of silver being 0.5 wt % and the balance being copper;

[0032] 2) Vacuum smelting technology is used to prepare ingots, and the copper and silver with a good ratio are put into the vacuum smelting furnace at one time without mixing, and the silver particles are put into the storage room, and then vacuumized. When the vacuum degree reaches 9.0× 10 -3 Start heating at Pa, increase the power, and when the temperature reaches 900°C, turn off the vacuum and fill it with argon until the vacuum degree is 1.0×10 2 Pa, when the temperature reaches 1150°C, silver is added and stirred. After stirring for 2-3 minutes, it is cast and cooled naturally to obtain an ingot.

[0033] 3) The temperat...

Embodiment 2

[0037] The preparation method of the high-strength copper-silver alloy material of the present embodiment comprises the following steps:

[0038] 1) Use oxygen-free copper, silver particles with a purity of 99.9% and a diameter of 0.01 cm as raw materials, and carry out ingredients according to the proportion of silver being 1.0 wt % and the balance being copper;

[0039] 2) Prepare copper-silver alloy bars by using vacuum smelting technology. Put copper and silver with a good ratio into the vacuum smelting furnace at one time but do not mix them. The silver particles are put into the storage room, and then vacuumized. When the vacuum degree up to 9.0×10 -3 Start heating at Pa, increase the power, turn off the vacuum when the temperature reaches 800°C, and fill it with argon until the vacuum degree is 1.0×10 2 Pa, when the temperature reaches 1200°C, silver is added and stirred for 2-3 minutes, then cast and cooled to obtain an ingot.

[0040] 3) The solution treatment tempe...

Embodiment 3

[0044] The preparation method of the high-strength copper-silver alloy material of the present embodiment comprises the following steps:

[0045] 1) With oxygen-free copper and silver particles with a purity of 99.9% and a diameter of 0.05 cm as raw materials, the proportion of silver is 0.1 wt%, and the balance is copper;

[0046] 2) Prepare copper-silver alloy bars by using vacuum smelting technology. Put copper and silver with a good ratio into the vacuum smelting furnace at one time but do not mix them. The silver particles are put into the storage room, and then vacuumized. When the vacuum degree up to 9.0×10-3 Start heating at Pa, increase the power, turn off the vacuum when the temperature reaches 850°C, and fill it with argon until the vacuum degree is 1.0×10 2 Pa, when the temperature reaches 1180°C, silver is added and stirred for 2-3 minutes before casting and cooling to obtain an ingot.

[0047] 3) The temperature of the solution treatment for the ingot is 800°C, ...

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Abstract

The invention provides a preparation method of a copper alloy material. The preparation method comprises the following steps: 1) carrying out copper and silver alloying: heating copper under the condition that the vacuum degree is not greater than 9.0*10<-3>Pa; stopping vacuumizing when the heating temperature is 800 to 900 DEG C; raising the temperature under the protection of inert gas and heating until the copper is completely melted; then adding silver and mixing to form a melt; casting to form a casting ingot; 2) carrying out alloy solid solution treatment: carrying out solid solution treatment on the casting ingot; 3) carrying out cold deformation processing; 4) carrying out ageing heat treatment. According to the preparation method provided by the invention, the content of the silver in a prepared alloy is less; in a preparation process, the burning loss of noble metal silver can be extremely reduced and the production cost is reduced; the copper alloy material obtained by matching proper heat treatment and a cold processing technology has the characteristics of high strength and high conductivity, uniform components and stable performance and convenience for processing various copper products, and guarantees are provided for wide application of the copper alloy material.

Description

technical field [0001] The invention relates to the field of copper alloy smelting and processing, in particular to a copper alloy material and a preparation method thereof. Background technique [0002] For traditional conductive materials such as copper, aluminum and their alloys, there is a trade-off relationship between strength and conductivity, and it is generally difficult to have both high conductivity and high strength. Because metal copper and metal silver have excellent electrical conductivity and they are insoluble in each other at room temperature, they are ideal candidates for achieving high strength and high conductivity, and are widely used in electric locomotive transmission lines, transport wires, lead frames and high magnetic field pulses magnets etc. The conventional method to realize high-strength and high-conductivity copper-silver alloy material is to achieve copper-silver alloying, and to improve the strength of the material by adjusting the silver c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22F1/08C22C1/02
CPCC22C1/02C22C9/00C22F1/08
Inventor 姚大伟张远望王树森
Owner SHANGHAI ELECTRIC CABLE RES INST
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