High voltage vacuum arc-extinguishing room contact material and its preparing method

A vacuum interrupter and contact material technology, which is applied in the field of vacuum interrupter, can solve the problems of living environment hazards, breaking ability, anti-welding ability, high pressure resistance, insufficient arc resistance performance, atmospheric ozone layer destruction, etc. , to achieve the effects of good arc extinguishing performance, scientific and reasonable preparation method, and easy production scale

Inactive Publication Date: 2005-10-19
山东晨鸿电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of domestic contact materials in terms of strength, breaking capacity, welding resistance, high pressure resistance, and arc resistance, especially for high-voltage and ultra-high-voltage vacuum interrupter products above 41.5kV, most of the used It is an SF6 product and an imported product, and the use of SF6 gas protection switch has a serious damage effect on the atmospheric ozone layer and has potential harm to the living environment of human beings.

Method used

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  • High voltage vacuum arc-extinguishing room contact material and its preparing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The contact material of the high-voltage vacuum interrupter of the present invention is composed of ingredients according to the following weight percentages:

[0020] Mo, W, and Cr passed through a 100-mesh sieve were 20.35%, 4.66%, 4.67%, and Cu rods 70.32%.

[0021] Put the uniformly mixed Mo, W and Cr powders into a crucible with graphite paper, put the weighed copper rod into the crucible cap, fix the crucible on the tray, and place the crucible cap on the crucible. Close the furnace cover, evacuate to 0.02Mpa, raise the temperature to 100°C, and keep it warm for 30 minutes; then raise the temperature to 1300°C, and keep it warm for 30 minutes to carry out infiltration treatment under the condition that the vacuum degree is guaranteed to be 0.02Mpa; then turn off the heating system and cool down to 1200°C ℃, keep warm for 60 minutes; continue to cool down to get the product out of the oven, and get the finished product after mechanical processing and other post-pro...

Embodiment 2

[0025] The contact material of the high-voltage vacuum interrupter of the present invention is composed of ingredients according to the following weight percentages:

[0026] The Mo, W, and Cr passed through a 120-mesh sieve are 20%, 5%, and 5%, respectively, and the Cu rods are 70%.

[0027] Put the uniformly mixed Mo, W and Cr powders into a crucible with graphite paper, put the weighed copper rod into the crucible cap, fix the crucible on the tray, and place the crucible cap on the crucible. Close the furnace cover, evacuate to 0.02Mpa, raise the temperature to 105°C, and keep it warm for 35 minutes; then raise the temperature to 1310°C, and keep it warm for 30 minutes to carry out infiltration treatment under the condition that the vacuum degree is guaranteed to be 0.02Mpa; then turn off the heating system and cool down to 1210°C ℃, keep warm for 55 minutes; continue to cool down to get the product out of the oven, and get the finished product after mechanical processing a...

Embodiment 3

[0029] The contact material of the high-voltage vacuum interrupter of the present invention is composed of ingredients according to the following weight percentages:

[0030] The Mo, W, and Cr passed through a 110-mesh sieve are 20%, 5.5%, 4.5%, and 70% of Cu rods.

[0031] Put the uniformly mixed Mo, W and Cr powders into a crucible with graphite paper, put the weighed copper rod into the crucible cap, fix the crucible on the tray, and place the crucible cap on the crucible. Close the furnace cover, evacuate to 0.023Mpa, raise the temperature to 110°C, and keep it warm for 30 minutes; then raise the temperature to 1320°C, and keep it warm for 30 minutes to carry out infiltration treatment under the condition that the vacuum degree is guaranteed to be 0.022Mpa; then turn off the heating system and cool down to 1190°C ℃, keep warm for 65 minutes; continue to cool down to get the product out of the oven, and get the finished product after mechanical processing and other post-pro...

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Abstract

This invention relates to a contactor material of a high voltage vacuum arc-suppressing chamber in a vacuum switch, its weight percentage composition is: Mo18-22%, W3-7%, Cr3-7%, the rest is Cu. The Mo, W, Cr powder materials mixed uniformly in terms of the composition ratio are prepared by penetrating Cu with high temperature penetration method. This invented contactor material has super low oxygen content, uniform organization, good performance of arc suppression.

Description

technical field [0001] The invention relates to a contact material for a high-voltage vacuum interrupter, which belongs to the technical field of electrical performance materials and is used for a vacuum interrupter in a vacuum switch. Background technique [0002] With the development of the national economy, the basic energy industry has also been rapidly improved, the use of vacuum switchgear is increasing, and the demand for vacuum interrupters is also increasing, with an annual growth rate of about 16%. The production of high and medium voltage vacuum interrupter materials provides a broad market and development opportunities. [0003] The contact is an indispensable key component of the vacuum interrupter, and its performance directly affects the technical parameters and quality stability of the vacuum interrupter. For a long time, many scientific and technological workers have devoted themselves to the research and development of new contact materials. After the 196...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H1/02H01H33/664
Inventor 冉隆科张文波刘云飞
Owner 山东晨鸿电气有限公司
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