Cracking Failure Analysis on the Cast Crank Arm of High Voltage Apparatus

WANG Jianwei; HE Jia; ZHAO Tao; ZOU Xinfeng

doi:10.13296/j.1001-1609.hva.2015.04.036

您当前的位置：

首页 >

文章列表页 >

Cracking Failure Analysis on the Cast Crank Arm of High Voltage Apparatus

更新时间：2025-04-26

- Cracking Failure Analysis on the Cast Crank Arm of High Voltage Apparatus
- High VoltageApparatus Vol. 51, Issue 4, Pages: 200-204(2015)
- 作者机构：
  
  西安西电高压开关有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2015.04.036
  CLC： TM564
- Published：2015
- 稿件说明：
移动端阅览
[1]王建伟,何佳,赵涛,邹新峰.高压开关用铸态拐臂断裂失效分析[J].高压电器,2015,51(04):200-204.

WANG Jianwei, HE Jia, ZHAO Tao, et al. Cracking Failure Analysis on the Cast Crank Arm of High Voltage Apparatus[J]. High voltageapparatus, 2015, 51(4): 200-204.
[1]王建伟,何佳,赵涛,邹新峰.高压开关用铸态拐臂断裂失效分析[J].高压电器,2015,51(04):200-204. DOI： 10.13296/j.1001-1609.hva.2015.04.036.

WANG Jianwei, HE Jia, ZHAO Tao, et al. Cracking Failure Analysis on the Cast Crank Arm of High Voltage Apparatus[J]. High voltageapparatus, 2015, 51(4): 200-204. DOI： 10.13296/j.1001-1609.hva.2015.04.036.

摘要

某型号高压开关用铸态拐臂在试验过程中发生断裂

通过宏观检验、化学分析、金相检验、扫描电镜与能谱分析等方法对铸态拐臂断裂的原因进行了分析。结果表明:非金属夹杂是裂纹源萌生的地方

随后裂纹不断扩展

最终导致球墨铸铁拐臂断裂失效。拐臂的断裂机制为解理+沿晶界的混合型断裂

连续分布的皮下气孔也是促使拐臂断裂的原因。

Abstract

The fracture reason of a cast crank arm in experiment is analyzed by means of chemical analysis

metallographic examination

scanning electron microscopy and energy spectrum analysis

after cracking abnormally in use. The results show that nonmetallic inclusion is the source place of crack initiation

crack extension continuously

then turn eventually led to the ductile iron arm fracture failure.Crank arm fracture mechanism is cleavage mixed with fracture along grain boundaries. Continuous distribution of subcutaneous blowhole are reasons of arm fracture.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Fault Classification Method of Circuit Breaker Based on Improved Phase Trajectory Features of Coil Currents

Analysis on Oil Cylinder Cracking of Energy Storage Mechanism for 500 kV Circuit Breaker

Study on Electromagnetic Transient Characteristics During Switching Operation of 750 kV GIS Substation

Adjustment and Optimization Analysis Method of Opening Time for Circuit Breaker

Fault Detection and Analysis on Closing Resistor of 1 100 kV GIS Circuit Breaker

Related Author

CHEN Yaqi

FAN Ruixiang

ZOU Yang

LONG Guohua

LI Qiong

QIAN Haitao

ZHAO Yang

PAN Zhen

Related Institution

Institute of Electric Power Science, State Grid Jiangxi Electric Power Co., Ltd.

School of Information Engineering, Nanchang Hangkong University

State Grid Henan Electric Power Company

China Power Construction Group Henan Electric Power Survey and Design Institute

State Grid Chongqing Electric Power Research Institute

⁰