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Short-process preparation method of bimetal composite wire

A bimetallic and composite wire technology, applied in the field of metal composite materials, can solve problems such as inability to meet process requirements, and achieve the effects of easy control of product uniformity, short time, and control of product quality

Active Publication Date: 2019-06-21
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the limitation of the conventional one-time continuous casting direct compounding method is that the melting, heat preservation, and casting of metals are all in the atmospheric environment. Even metals with stable chemical properties such as gold and silver cannot meet the requirements of the process when the quality of the finished product is high. Require

Method used

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  • Short-process preparation method of bimetal composite wire
  • Short-process preparation method of bimetal composite wire
  • Short-process preparation method of bimetal composite wire

Examples

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preparation example Construction

[0036] The preparation process of the bimetallic composite billet is:

[0037] Step 1: First select the outer metal and core metal, and then vacuumize, when the vacuum reaches: 1×10 -2 Pa above, then melt the selected metals separately, and keep it warm at a certain temperature for 20 to 30 minutes;

[0038] Step 2: First introduce the melted external metal solution into the compound crystallizer, adjust the cooling water flow, start the traction mechanism, and carry out continuous casting of the cladding metal tube; when the outer metal is formed to a proper length, then melt the The core metal solution is introduced into the composite crystallizer, so that the core metal melt is filled into the first solidified cladding metal tube, and the secondary cooling device is turned on at the same time to perform secondary cooling on the continuous casting slab; the core metal melt The body is solidified into a core material under the action of the crystallizer and the secondary coo...

Embodiment 1

[0076] Short-flow production process of silver-clad aluminum composite wire with a diameter of 50 μm and a thickness of silver of 8 μm.

[0077] (1) Using pure silver and pure aluminum as raw materials, using high-vacuum continuous casting forming equipment and technology to prepare high-quality bimetallic composite rods with a metallurgical bonding interface, the diameter is 20mm; the silver continuous casting temperature is 1150 ° C, and the aluminum is 800 ° C. ℃, keep warm for 20 minutes after melting, adjust the cooling water flow rate of the crystallizer to 400L / h, set the continuous casting casting program through the integrated control system, and set the speed to 45mm / min;

[0078] (2) The composite billet is processed into a composite wire rod with a diameter of 8mm by multi-pass rolling, the rolling speed is 5m / min, and the single-pass rolling deformation is controlled at 20%;

[0079] (3) The rolled wire is processed into a wire of the required size by multi-pass d...

Embodiment 2

[0088] Short-flow production process of gold-clad aluminum composite wire with a diameter of 50 μm and a gold thickness of 6 μm.

[0089] (1) Using pure gold and pure aluminum as raw materials, high-quality bimetallic composite rods with a metallurgical bonding interface were prepared by high-vacuum continuous casting equipment and technology, with a diameter of 20 mm; the continuous casting temperature of gold was 1200 ° C, and that of aluminum was 800 ° C. Keep warm for 20 minutes after melting, adjust the cooling water flow rate of the crystallizer to 600L / h, and set the continuous casting casting program through the integrated control system, and set the speed to 60mm / min;

[0090] (2) The composite billet is processed into a composite wire rod with a diameter of 8mm by multi-pass rolling, the rolling speed is 5m / min, and the single-pass rolling deformation is controlled at 20%;

[0091] (3) The rolled wire is processed into a wire of the required size by multi-pass drawin...

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Abstract

The invention belongs to the field of metal composite materials, and particularly relates to a short-process preparation method of a bimetal composite wire. The method specifically comprises the following steps that 1, a high-quality double-metal composite wire rod blank with the diameter of 20-50 mm and a metallurgical bonding interface is prepared by adopting a vacuum continuous casting composite process; 2, the composite blank is processed into the composite wire with the diameter of 8-20 mm by adopting multi-pass type rolling, and the single-pass rolling deformation amount is controlled tobe 15-30%; 3, multi-pass drawing forming is performed on the rolled wire to obtain the wire with the required size, and single-pass drawing deformation is 10%-25%; and 4, the rolled and drawn composite wire is rapidly induced and heated and is subject to continuous heat treatment according to requirements. The method is adopted to prepare the noble metal composite wire, the process flow is short,the production efficiency is high, and the large-scale production is facilitated.

Description

technical field [0001] The invention belongs to the field of metal composite materials, and in particular relates to a short-process preparation method of a bimetallic composite wire. Background technique [0002] Precious metal wires such as gold and silver are key materials necessary for the electronic information industry due to their excellent electrical conductivity, welding performance and stability. With the rapid development of the electronic information industry, people have higher and higher requirements for metal wires, with thinner wire diameters, higher conductivity, more suitable strength and stiffness, and lower costs. Traditional single-metal wires are difficult to meet these requirements, and composite wires with excellent comprehensive properties are gradually being paid attention to. [0003] At present, the large-scale industrial production methods suitable for composite materials include: mechanical composite method, plastic deformation composite method...

Claims

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Application Information

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IPC IPC(8): B22D19/16B22D11/14C21D9/52C22F1/04C22F1/14
Inventor 刘新华谢建新施兵兵谢明
Owner UNIV OF SCI & TECH BEIJING