Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Titanium-coated copper bus-bar and its making method

A technology of copper busbars and busbars, applied in cable/conductor manufacturing, conductors, rods/rods/wires/strip conductors, etc. Oxidation and other problems, to achieve the effect of high current density and efficiency, good electrolytic properties, and excellent conductivity

Inactive Publication Date: 2006-05-24
KOREA INST OF SCI & TECH
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the use of these methods to prepare titanium-coated copper bus bars has the following disadvantages: brittle intermetallic compounds are formed on the interface between the titanium tube and the copper bar, thereby reducing the bonding strength between the titanium tube and the copper bar
And it is difficult to uniformly embed Ag-Cu-Sn-based or Ag-Cu-Al-based solder fillers on the interface between the titanium shell and the copper strip
[0007] In addition, when copper and titanium are heated or heat-treated in the air, because the surface of copper and titanium has a high affinity for oxygen, it is easily oxidized, so the effective combination between copper and titanium cannot be obtained.
In order to avoid oxidation of copper and titanium, titanium and copper must be heated or heat-treated under vacuum or inert atmosphere, which causes inconvenience and increases cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Titanium-coated copper bus-bar and its making method
  • Titanium-coated copper bus-bar and its making method
  • Titanium-coated copper bus-bar and its making method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Copper (pure copper or copper alloy) with good electrical conductivity is prepared by coating metal with titanium (pure titanium or titanium alloy) with excellent corrosion resistance to prepare titanium-coated steel with good electrical conductivity and corrosion resistance Copper bus bars.

[0064] A copper core with a diameter of 29 mm is embedded in a titanium tube with an outer diameter of 32 mm and a thickness of 1 mm, and the outer diameter is drawn to 26 mm using a drawing device, thereby completely separating the titanium cladding and the copper core. mechanically combined. For the mechanical bonding between the copper core and the titanium tube, extrusion or rolling can also be used alone or in combination.

[0065] The mechanically bonded titanium-plated copper bus bar is heat-treated at 850° C. for 30 minutes under the protection of an inert gas to metallurgically bond the mechanically bonded titanium cladding layer and the copper core.

[0066] Figure 2...

Embodiment 2

[0068] A copper core with a diameter of 29 mm was embedded in a titanium tube with an outer diameter of 32 mm and a thickness of 1 mm, and the outer diameter was drawn to 26 mm using a drawing device. The drawn titanium-coated copper bus bar was heat-treated at 880° C. for 2 minutes under the protection of an inert gas to metallurgically bond the mechanically bonded titanium cladding layer to the copper core.

[0069] Figure 2B shows the cross-sectional microstructure of a titanium-coated copper bus bar that was heat-treated at 880° C. for 2 minutes under an inert gas protection after the first drawing. Such as Figure 2B As shown, the cross-sectional microstructure of the titanium clad layer and copper core is three layers: titanium clad layer (1), molten layer (5) and copper core (2), and shows that titanium and copper are well combined in Together.

Embodiment 3

[0071] A titanium-coated copper bus bar was prepared by first drawing and subsequent heat treatment, and the bus bar was drawn again to obtain a bus bar with an outer diameter of 24 mm, and then heat treated at 850 ° C for 30 minutes to obtain Combine well with titanium-clad copper bus bars. The resulting titanium-clad copper bus bars exhibit good metal bonding.

[0072] In addition, the titanium-coated copper bus bar of Example 2 having a three-layer structure of titanium clad layer (1), molten layer (5) and copper core (2) is drawn again and heat-treated at 700° C. for 10 minutes, A titanium-coated copper bus bar was produced. Figure 2C shows the cross-sectional microstructure of the as-prepared Ti-coated copper bus bars. Such as Figure 2C As shown, due to the drawing method, the molten layer formed by the brittle intermetallic compound formed by the low-temperature eutectic reaction is distributed discontinuously, but shows good metal bonding.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Diameteraaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

Disclosed is a titanium-coated copper bus bar with good corrosion resistance and electrical conductivity and a preparation method thereof. The bus bar is obtained by combining titanium or titanium alloy with good corrosion resistance and copper or copper alloy with good electrical conductivity. made by combining. The bus bar has an interfacial reaction layer between the titanium clad layer and the copper core due to solid phase reaction or low temperature eutectic reaction. Furthermore, the bus bar alternatively or additionally has an intermediate bonding substance between the titanium cladding and the copper core.

Description

technical field [0001] The invention relates to a titanium-coated copper bus bar with good corrosion resistance and electrical conductivity and a preparation method thereof. The titanium-coated copper bus bar is obtained by applying pressure and / or heating It is obtained by combining high-strength titanium (or titanium alloy) with copper (or copper alloy) with higher electrical conductivity. Background technique [0002] The bus bar is used as a medium for transferring electric energy by connecting several circuits, and constitutes a power transmission circuit with a high current capacity, such as a large transmission distribution line, electrical wire or communication cable, installed in a power plant, a large building, a large factory , large department stores, subway stations, or new airports. The advantage of the bus bar is that it can transmit more electric energy under the condition of the same volume of the conductor. Therefore, the bus bar has recently been used mor...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01B5/00H01B13/00
CPCB21C37/04C25D17/10H01B1/02H01B5/02
Inventor 都正万尹珍国朴钟九孔二子孔正允
Owner KOREA INST OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com