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Preparation method of gold alloy copper-clad composite wire

A composite wire and gold alloy technology, which is applied in manufacturing tools, heat treatment equipment, furnaces, etc., can solve the problems of difficulty in preparing high-elasticity gold alloy-clad copper-clad electrical contact composite wire materials, large deviation of the concentricity of the composite layer, and affecting the service life. , to reduce the complexity of the process, the thickness of the composite layer is thin, and the effect of improving the production efficiency

Active Publication Date: 2021-01-05
西安诺博尔稀贵金属材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The preparation of composite wire generally adopts the solid phase composite technology of plastic processing and diffusion annealing. For example, the application number is 201210580244.2, and the publication date is May 1, 2013. The Chinese invention patent application document "Gold / Silver / Copper Alloy New Composite Wire Material and its preparation method” discloses a method for preparing a composite wire by hot-extruding, cold-drawing and heat-treating the wire billet after the package is sealed and welded through an 800-ton extruder. The interface of the composite layer of the composite wire prepared by this method is easy It forms a jagged shape, which leads to large concentricity deviation and uneven thickness of the composite layer, which affects the service life. It is difficult to prepare high-elastic gold alloy copper-clad electrical contact composite wire materials with the existing metal composite wire preparation methods

Method used

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  • Preparation method of gold alloy copper-clad composite wire
  • Preparation method of gold alloy copper-clad composite wire
  • Preparation method of gold alloy copper-clad composite wire

Examples

Experimental program
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Embodiment 1

[0058]Such asfigure 2 As shown, a hot drawing device of this embodiment includes a quartz tube 3, a heating furnace 4 for heating the quartz tube 3, an argon gas tube 2, a hot drawing die 6, a hot drawing die support 7, and The cooling device 8 for spraying circulating cooling water and the traction device 9 for pulling the winding silk blank; as a feasible embodiment, the cooling device 8 in this embodiment is a spray head, and the traction device 9 is a circular A disk-type wire drawing machine, the disk-type wire drawing machine includes a rotating disk for winding the wire blank and a motor that drives the rotating disk to rotate, the rotating disk is sleeved on the motor shaft of the motor;

[0059]Both ends of the quartz tube 3 are open, the hot drawing die 6 is arranged in front of the quartz tube 3 and the die hole of the hot drawing die 6 is facing the opening of the front end of the quartz tube 3, and one end of the argon gas tube 2 is connected to the quartz tube 3 Near the ...

Embodiment 2

[0065]The method for preparing a gold alloy copper-clad composite wire of this embodiment includes the following steps:

[0066]Step 1. A gold alloy tube with an outer diameter of 8mm and a wall thickness of 0.6mm is subjected to solution heat treatment at 700°C for 30 minutes to obtain a solution heat-treated tube; the gold alloy tube is AuAgCu gold alloy tube;

[0067]After solution heat treatment, the pipe is immersed in a 10% dilute sulfuric acid solution by mass for 30 minutes and then taken out, cleaned with deionized water under ultrasonic conditions, and the pipe is immersed in absolute ethanol for 5 minutes after cleaning with deionized water , The amount of absolute ethanol is subject to immersion of the pipe; then bake at 80°C for 60 minutes to obtain a gold alloy pipe; the ultrasonic frequency is 40 kHz, and the cleaning time with deionized water under ultrasonic conditions is 15 minutes;

[0068]A beryllium bronze bar with a diameter of 6.65 mm was solution heat-treated at 780°C...

Embodiment 3

[0079]This embodiment is the same as embodiment 2, except that the gold alloy pipe in step 1 is AuNi gold alloy pipe or AuCuPtAg gold alloy pipe.

[0080]From the appearance point of view, the composite layer of the gold alloy copper-clad composite wire of this embodiment is thin, the composite layer has good thickness uniformity and high concentricity.

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Abstract

The invention discloses a preparation method of a gold alloy copper-clad composite wire. The preparation method comprises the following steps that 1, a beryllium bronze rod is sleeved with a gold alloy pipe to obtain a gold alloy copper-clad composite wire blank; 2, pre-drawing is carried out, and a gold alloy copper-clad composite wire blank after pre-drawing is obtained; 3, hot drawing is carried out in the argon atmosphere, and a gold alloy copper-clad composite wire blank obtained after hot drawing is obtained; 4, cold drawing is carried out, and a gold alloy copper-clad composite wire blank after cold drawing is obtained; and 5, aging treatment is carried out, and the gold alloy copper-clad composite wire is obtained. According to the method, the gold alloy pipe serves as an outer-layer coating layer, high-strength beryllium bronze serves as an inner-layer core rod, the beryllium bronze core rod is sleeved with the gold alloy pipe, and then drawing pre-compounding, medium-temperature hot drawing, cold drawing and aging treatment are carried out to obtain the high-elasticity and high-strength gold-clad copper composite wire with the thin composite layer, the good composite layer thickness uniformity, the high concentricity, the high elasticity and the high strength.

Description

Technical field[0001]The invention belongs to the technical field of metal composite material processing, and specifically relates to a method for preparing a gold alloy copper-clad composite wire.Background technique[0002]The sliding electrical contact material is in sliding contact with the conductive ring by the elastic pressure of the brush, so as to realize the precise and accurate transmission of various powers, signals, and currents of the two unrestricted continuous rotating mechanisms.[0003]Gold-based alloys include AuAgCu, AuNi, AuCuPtAg and other alloy materials, which have good corrosion resistance, wear resistance, high strength and elasticity, and small contact stress relaxation, so that the contact element has a long working life, high working reliability and output It is the best choice for brushes and light-load electrical contact materials with its advantages such as precision. However, as the requirements for long life, high stability, and low cost of products con...

Claims

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Application Information

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IPC IPC(8): B21C1/00B21C37/04C22C9/00C21D9/52
CPCB21C1/003B21C37/047C22C9/00C21D9/525
Inventor 周龙海陈昊朱绍珍马晓东范晔余建军赵涛
Owner 西安诺博尔稀贵金属材料股份有限公司