Research and Improvement on Resistance to Arc Ablation and Melt Welding of CuCr Contacts in Vacuum Interrupter Chamber

ZHAO Qi; HAN Jinru; LIU Wei; ZHANG Yanchao

doi:10.13296/j.1001-1609.hva.2024.08.001

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Research and Improvement on Resistance to Arc Ablation and Melt Welding of CuCr Contacts in Vacuum Interrupter Chamber

Research & Analysis | 更新时间：2025-04-26

- Research and Improvement on Resistance to Arc Ablation and Melt Welding of CuCr Contacts in Vacuum Interrupter Chamber
- High Voltage Apparatus Vol. 60, Issue 8, Pages: 1-10(2024)
- 作者机构：
  
  1.中国西电电气股份有限公司，西安　 710000
  2.西安西电高压开关有限责任公司，西安　 710000
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2024.08.001
  CLC：
- Received：29 February 2024，
  
  Revised：11 April 2024，
  
  Published：16 August 2024
- 稿件说明：
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ZHAO Qi, HAN Jinru, LIU Wei, et al. Research and Improvement on Resistance to Arc Ablation and Melt Welding of CuCr Contacts in Vacuum Interrupter Chamber[J]. High voltage apparatus, 2024, 60(8): 1-10.
DOI：

ZHAO Qi, HAN Jinru, LIU Wei, et al. Research and Improvement on Resistance to Arc Ablation and Melt Welding of CuCr Contacts in Vacuum Interrupter Chamber[J]. High voltage apparatus, 2024, 60(8): 1-10. DOI： 10.13296/j.1001-1609.hva.2024.08.001.

摘要

CuCr触头材料的抗烧蚀和抗熔焊性是影响真空灭弧室寿命的重要因素。文中以CuCr触头材料在真空电弧下的烧蚀为立足点，对烧蚀过程和机理进行叙述，并从CuCr触头的微观组织以及真空灭弧室的磁场类型论述影响CuCr触头烧蚀的相关机理。同时指出抗熔焊性能与触头材料的抗拉以及热导率等因素有关。最后从表面改性和合金化角度总结了提高触头抗烧蚀的研究进展，并总结改进触头抗烧蚀性能的研究方向。

Abstract

The ablation resistance and the anti-melt welding performance of CuCr contact material is an important factor affecting the life of vacuum interrupter. In this paper

the ablation of CuCr contact material under vacuum arc is the foothold

the ablation process and mechanism are described

and the microstructure of CuCr contact and the magnetic field type of vacuum interrupter discusses the relevant mechanisms affecting the ablation of CuCr contact. It is pointed out that the anti-melt welding performance is related to the tensile and thermal conductivity of the contact material. finally

the research progress of improving the contact’s resistance to ablation from the perspectives of surface modification and alloying is summed up

and the research direction of improving the resistance to ablation of contact is summarized.

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