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Method for making an electro conductive joint

A technology of conductive joints and conductive rails, which is applied in the direction of printed circuit manufacturing, manufacturing tools, connections, etc., can solve the problems of increased power, loss, and weakened conductive capacity of screw joints, and achieves ease of use, fast manufacturing speed, and good electrical conductivity. Effect

Inactive Publication Date: 2005-04-06
OUTOKUMPU OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increased power consumption causes severe power loss due to reduced electrical conductivity of the screw joint and the resulting conduction resistance
Also, the repair of joints, where 10 year old joints even need to be renewed, results in many labor costs

Method used

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  • Method for making an electro conductive joint
  • Method for making an electro conductive joint
  • Method for making an electro conductive joint

Examples

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Embodiment Construction

[0011] According to the method of the invention, one conductor track 1 consisting essentially of copper is connected to another conductor track 2 mainly consisting of copper. According to the method, a soldering / brazing flux 3 having a melting temperature lower than that of the parts 1, 2 being joined together is applied between the connecting faces of the conductor tracks; The melting temperature of the part is at or near the melting temperature, and the junction zone is then cooled. By using the method of the invention, a diffusion joint will be obtained. The temperature can be raised to the height described in order to temporarily create a molten phase in the junction zone. The solder / braze used is a layered solder / braze metal sheet 3 comprising surface layers 4, 6 with an intermediate layer 5 in between. According to the method, the connection zone is heated in order to create a diffusion junction.

[0012] Sheet-shaped soldering / brazing flux is easy to handle, the shee...

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Abstract

A method for creating an electroconductive joint in connection with conductor rails made of copper or copper alloy, in which method in between the conductor rail elements to be joined, there is applied soldering / brazing agent, whereafter at least the junction area is heated, so that a joint is created. According to the method, the employed soldering / brazing agent is a layered soldering / brazing agent foil (3) comprising surface layers (4, 6) and an intermediate layer (5) therebetween, and the junction area is thermally treated, so that a diffusion joint is created.

Description

technical field [0001] The invention relates to a method for producing an electrical connection of an electrical conductor track made of copper or a copper alloy. Background technique [0002] In factories that require high electrical power, the power conductors used are generally conductive rails composed of copper or copper alloys. Conductor rails are long and generally include clamping joints produced by fixing elements such as screws. Usually the joint is an overlapping joint, in which case a plurality of sheets are joined together, at least one hole being drilled in the transverse direction. The holes are arranged to match each other and a fixing element such as a screw is inserted therein, which is fastened by a counterpart such as a nut so that the connection faces of the pieces to be connected are pressed together. When screw joints are used, the conduction of electrical current depends on the mechanical contact between the connected pieces. Effective and safe con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/00B23K35/00B23K35/02B23K35/14B23K35/28B23K35/30C22C5/06H01R4/02H01R43/02H05K3/34
CPCB23K35/3006H05K3/341B23K2201/26B23K35/0238B23K2203/12B23K35/007B23K1/0016H05K3/3478H01R43/02B23K2101/26B23K2103/12Y10T428/12528
Inventor 维克·博尔维
Owner OUTOKUMPU OY