Analysis on Fracture Causes of Tulip Contact Springs
In order to find the fracture cause of tulip contact spring of a switchgear,the fracture was studied by means of macroscopic observation,electron microscopic analysis,chemical composition measurement,and metallographic examina-tion.The test results showed that fracture cause of the tulip contact spring is stress corrosion under high stress conditions triggered by Cl-contamination on part of the spring surface.In order to avoid similar accidents,during the installation and use of tulip contact springs,the spring surface should be kept clean,and avoid Cl-contamination.
万方数据
维普
