Preparation method of Cu-Ag alloy wire

A technology of alloy wire and alloy rod, which is applied in the field of preparation of Cu-Ag alloy wire, can solve the problems of high preparation cost, reduced electrical conductivity, high Ag content, etc.

Active Publication Date: 2020-06-09
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the patent of "A Cu-Ag alloy with enhanced eutectic strengthening and its preparation method" by Wang Engang of Northeastern University, the Cu-Ag alloy was prepared by melting and cold deformation, and the Ag content was 15-30wt%. The high content is high, so the preparation cost is also high
Xie Guoliang of Beijing General Research Institute of Nonferrous Metals et al.’s patent “A Preparation Method for Cu-Ag Alloy with High Strength and High Conductiv

Method used

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  • Preparation method of Cu-Ag alloy wire
  • Preparation method of Cu-Ag alloy wire
  • Preparation method of Cu-Ag alloy wire

Examples

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Embodiment 1

[0020] The raw materials for the preparation of the Cu-Ag alloy wire rod in this embodiment are copper and silver ingots, wherein the purity of the copper and silver ingots is >99%, and the mass fraction of silver is 1%. The concrete preparation method of this Cu-Ag alloy wire rod is:

[0021] (1) Vacuum induction melting of copper block and silver block is adopted to obtain Cu-Ag alloy ingot;

[0022] (2) Clean the scale on the surface of the Cu-Ag alloy ingot with 5% dilute hydrochloric acid, then polish the surface with sandpaper, put it into alcohol and acetone and use ultrasonic cleaning;

[0023] (3) the ingot is forged at room temperature to obtain a Cu-Ag alloy rod with a diameter of 9.5 mm;

[0024] (4) After the bar is immersed in liquid nitrogen for 2 minutes, it is rolled at room temperature to obtain a Cu-Ag alloy bar with a diameter of 3.5 mm;

[0025] (5) Finally, the rod is soaked in liquid nitrogen for 2 minutes, and then drawn to obtain a wire with a diamet...

Embodiment 2

[0029] The raw materials for the preparation of the Cu-Ag alloy wire rod in this embodiment are copper and silver ingots, wherein the purity of the copper and silver ingots is >99%, and the mass fraction of silver is 1%. The concrete preparation method of this Cu-Ag alloy wire rod is:

[0030] (1) Vacuum induction melting of copper block and silver block is adopted to obtain Cu-Ag alloy ingot;

[0031] (2) Clean the scale on the surface of the Cu-Ag alloy ingot with 5% dilute hydrochloric acid, then polish the surface with sandpaper, put it into alcohol and acetone and use ultrasonic cleaning;

[0032] (3) the ingot is forged at room temperature to obtain a Cu-Ag alloy rod with a diameter of 9.5 mm;

[0033] (4) After the bar is immersed in liquid nitrogen for 4 minutes, it is rolled at room temperature to obtain a Cu-Ag alloy bar with a diameter of 3.5 mm;

[0034] (5) Finally, the rod is soaked in liquid nitrogen for 4 minutes, and then drawn to obtain a wire with a diamet...

Embodiment 3

[0038]The raw materials for the preparation of the Cu-Ag alloy wire rod in this embodiment are copper and silver ingots, wherein the purity of the copper and silver ingots is >99%, and the mass fraction of silver is 1%. The concrete preparation method of this Cu-Ag alloy wire rod is:

[0039] (1) Vacuum induction melting of copper block and silver block is adopted to obtain Cu-Ag alloy ingot;

[0040] (2) Clean the scale on the surface of the Cu-Ag alloy ingot with 5% dilute hydrochloric acid, then polish the surface with sandpaper, put it into alcohol and acetone and use ultrasonic cleaning;

[0041] (3) the ingot is forged at room temperature to obtain a Cu-Ag alloy rod with a diameter of 9.5 mm;

[0042] (4) After the bar is immersed in liquid nitrogen for 5 minutes, it is rolled at room temperature to obtain a Cu-Ag alloy bar with a diameter of 3.5 mm;

[0043] (5) Finally, the rod is soaked in liquid nitrogen for 5 minutes, and then drawn to obtain a wire with a diamete...

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Abstract

The invention discloses a preparation method of a Cu-Ag alloy wire. The preparation method comprises the steps that (1) copper, silver and alloy elements are smelted to form an alloy, and then the alloy is forged. The alloy elements include iron, tin, indium, chromium, niobium, tungsten, molybdenum, titanium or zirconium; the mass fraction of the silver is 1-6%, and the mass fraction of the alloyelements is 0-1%; and (2) the forged alloy sample is subjected to rolling and wiredrawing at a low temperature. According to the prepared Cu-Ag alloy wire, since the microstructure of the copper is twin crystals and the microstructure of the silver is fine fibers, the strength of the Cu-Ag alloy wire is 500-1,490 MPa, and the electrical conductivity is 67-95% IACS. According to the preparation method, operation is simple, the cost is low, and the preparation method can be used for large-scale preparation of Cu-Ag alloy wires with high strength and high electrical conductivity.

Description

technical field [0001] The present invention relates to a kind of preparation method of Cu-Ag alloy wire rod Background technique [0002] The preparation of high-strength and high-conductivity copper wires is of great significance to many industrial applications, such as transmission line overhead lines, high-speed train contact wires, high-intensity pulse magnets, steam turbine rotors, and integrated circuit lead frames. At present, China has a total of 688,000 kilometers of power transmission lines. The traditionally used overhead lines are steel-cored and aluminum-wrapped wires, and 5-10% of electric energy will be lost during the transmission process. The demand for improving the transmission power of unit corridors is becoming increasingly urgent. Cu-Ag alloy wire has both high strength and high conductivity, and can replace traditional steel core or copper core for overhead transmission lines, so as to obtain high-strength and high-conductivity wires, which can effect...

Claims

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Application Information

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IPC IPC(8): B21C37/04B21J5/00C22C1/02C22C9/00
CPCB21C37/04B21J5/002C22C1/02C22C9/00
Inventor 茹亚东高召顺肖立业左婷婷薛江丽
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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