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A copper/aluminum/steel three-layer clad composite wire and its forming method

A composite wire and composite wire technology, which is applied in the manufacture of metal/alloy conductors, rods/rods/wires/strip conductors, cables/conductors, etc. Longevity, strength and density balance, the effect of reducing the pull-out force

Inactive Publication Date: 2017-04-26
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Copper-clad aluminum wire and copper-clad steel wire are due to the reasons of strength and density, respectively, when used as overhead cables, the pole distance is too short; while copper-clad steel wire is limited due to weight reduction; and aluminum-clad steel wire is due to aluminum It is easy to oxidize to form non-conductive aluminum oxide, causing circuit breaks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: φ Forming process of 1.5 mm copper / aluminum / steel three-layer clad composite wire

[0018] The copper tube is selected as the clad copper tube, and the outer diameter of the copper tube is φ 30 mm, wall thickness 2.5; core layer is 20# φ 16 mm round steel, remove the oil stain and oxide film on the inner wall of the copper tube and the surface of the steel core material, place it under a protective gas, and mechanically seal one end of the sandwich aluminum casting cavity composed of the clad copper tube and the core steel. The metal aluminum liquid is injected inward by die casting to prepare a three-layer composite billet; the hydrodynamic lubrication is realized in the form of a pressure sleeve, and the billet is drawn into a φ 1.5 mm composite wire, the drawing speed is 3m / s, and the lubricant is castor oil; the cold deformation of the composite wire reaches a reduction of area of ​​90%, and the annealing treatment is adopted at 420°C for 0.5h.

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Abstract

The invention relates to a copper, aluminum and steel three-layer clad composite wire. The copper, aluminum and steel three-layer clad composite wire is composed of a copper clad layer, core layer steel and an aluminum interlayer or aluminum alloy interlayer; the cross section of the copper clad layer is a circular ring; the cross section of the core layer steel is circular or irregular; the area ratio of the copper clad layer ranges from 8% to 25%; and the area ratio of the core layer steel ranges from 20% to 50%. The formation method of the wire includes the following steps that: a cleaned copper clad layer and core-layer steel are arranged in a protective gas, and one end of a casting cavity composed of the copper clad layer and the core-layer steel is sealed through adopting a mechanical mode, and metal aluminum liquid is injected into the casting cavity through adopting a pressure casting mode, so that a three-layer composite rod blank can be obtained; and hydrodynamic lubrication is realized through adopting a pressure casing mode, and rod blank drawing and intermediate annealing treatment are used in combination, so that the composite wire can be obtained.

Description

technical field [0001] The invention relates to a multi-layer clad metal composite wire and a forming method, in particular to a copper / aluminum / steel three-layer clad composite wire and a forming method thereof. Background technique [0002] With the development of science and technology, the requirements for material performance in petroleum, chemical industry, electric power, electronics and other fields are getting higher and higher. It is difficult for single material materials to meet the requirements of actual performance. Materials with different properties are combined to improve their performance. Multi-layer composite materials with comprehensive performance have been paid more and more attention, and it is one of the important research directions in the field of materials in the 21st century. Among metal-clad composite materials, copper-clad aluminum wire, copper-clad steel wire, and aluminum-clad steel wire are the most widely used bimetallic composite wires in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/02H01B5/02H01B13/00
CPCH01B1/02H01B1/023H01B1/026H01B5/02H01B13/00
Inventor 罗奕兵华熳煜彭伟杰谢炜戴晓元
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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