A conductive rod for a vacuum interrupter and a processing method thereof

A technology of vacuum interrupter and conductive rod, applied in the direction of circuits, electric switches, electrical components, etc., can solve the problems of high cost, inability to realize one-time sealing and discharge, long process, etc., and achieve small contact resistance and good shape and position tolerance , Improve the effect of insulation level

Inactive Publication Date: 2018-12-18
SHAANXI BAOGUANG VACUUM ELECTRIC DEVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has a long process and high cost, and cannot realize real one-time sealing and discharging.

Method used

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  • A conductive rod for a vacuum interrupter and a processing method thereof
  • A conductive rod for a vacuum interrupter and a processing method thereof
  • A conductive rod for a vacuum interrupter and a processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Step 1. Select copper-clad tungsten-copper contact 1 of appropriate specifications (tungsten mass content 70%, copper mass content 30%), first flatten the copper-clad end surface, and then flatten the end surface of the oxygen-free copper rod (TU0 or TU1) of the same specification Cheping then uses high-speed friction welding to weld the two metals together. A conductive rod blank for a vacuum interrupter in which the tungsten copper contact 1 (tungsten content 70%, copper content 30%) and the oxygen-free copper guide rod (TU0 or TU1) are integrated is obtained.

[0043] Step 2, the conductive rod blank for the vacuum interrupter obtained in step 1 is subjected to conventional mechanical processing, and then undergoes conventional production processes of conductive rods such as drilling, tapping, and slot milling, and finally deburrs and cleans, that is, Obtain dynamic / static conduction rods for vacuum interrupters.

Embodiment 2

[0045] Step 1. Select a copper-clad tungsten-copper contact with a suitable specification (tungsten mass content 80%, copper mass content 20%), first flatten the copper-clad end face, and then carve the end face of the same specification oxygen-free copper rod (TU0 or TU1) flat, and then use plasma welding to weld the two metals together. A conductive rod blank for a vacuum interrupter in which the tungsten-copper contact (80% tungsten content, 20% copper content) and the oxygen-free copper rod (TU0 or TU1) are integrated is obtained.

[0046]Step 2, the conductive rod blank for the vacuum interrupter obtained in step 1 is subjected to conventional mechanical processing, and then undergoes conventional production processes of conductive rods such as punching, tapping, and slot milling, and finally deburring and cleaning, that is, Obtain dynamic / static conduction rods for vacuum interrupters.

Embodiment 3

[0048] Step 1. Select a copper-clad tungsten-copper contact with a suitable specification (90% tungsten mass content, 10% copper mass content), first flatten the copper-clad end face, and then carve the end face of the same specification oxygen-free copper rod (TU0 or TU1) flat, and then use high-speed friction welding to weld the two metals together. A conductive rod blank for a vacuum interrupter in which the tungsten-copper contact and the oxygen-free copper rod are integrated is obtained.

[0049] Step 2, the conductive rod blank for the vacuum interrupter obtained in step 1 is subjected to conventional mechanical processing, and then undergoes conventional production processes of conductive rods such as punching, tapping, and slot milling, and finally deburring and cleaning, that is, Obtain dynamic / static conduction rods for vacuum interrupters.

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Abstract

The conductive rod for vacuum interrupter comprises a tungsten copper contact and an oxygen-free copper guide rod which are integrally welded by plasma or friction, and the diameter of the tungsten copper contact is larger than the diameter of the oxygen-free copper guide rod. The invention relates to a processing method of a conductive rod for a vacuum interrupter, which comprises the following steps: selecting a copper-clad tungsten-copper contact and an oxygen-free copper guide rod, and then welding the tungsten-copper contact and the oxygen-free copper guide rod together by using plasma orfriction welding to obtain a conductive rod blank; and then welding the tungsten-copper contact and the oxygen-free copper guide rod together to obtain a conductive rod blank. After the conductive rod blank is routinely treated, the conductive rod is obtained. The processing method organically combines the tungsten-copper contact with the oxygen-free copper guide rod by means of plasma or friction welding, removes the riveting and brazing process of the tungsten-copper contact with the oxygen-free copper guide rod, and is favorable for the realization of one-time sealing and draining process.At the same time, the tungsten-copper contact of the conductive rod for vacuum interrupter and oxygen-free copper guide rod have good structural consistency, small contact resistance and good form and position tolerance, which can appropriately reduce the production cost and shorten the production process.

Description

technical field [0001] The invention belongs to the technical field of vacuum interrupter components, in particular to a conductive rod for a vacuum interrupter, and also to a processing method for the conductive rod. Background technique [0002] In order to effectively close the short-circuit current, reduce the burning loss of the contacts caused by the arc, the vacuum interrupter used for the vacuum load switch, the stability and thermal stability of the short-circuit current, and meet the requirements of hundreds of thousands of long-life uses, generally Both use tungsten copper (90% tungsten content) contact material. At the same time, in order to ensure the effective conduction of the current, reduce the temperature rise, and avoid the influence of insulation due to the outgassing of the conductive material, the oxygen-free copper (TU0 or TU1) material with good electrical conductivity, excellent welding performance, and low gas content is generally used as the materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/664
CPCH01H33/664
Inventor 王文静李鹏
Owner SHAANXI BAOGUANG VACUUM ELECTRIC DEVICE
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