输电线路耐张线夹开裂原因分析  

Analysis on Cracking Failure of Strain Clamp on 750 kV Transmission Line

作　　者：郑准备[1] 张李锋[1] 张兵[1] 王博[1] 

机构地区：[1]陕西电力科学研究院,陕西西安710054

出　　处：《陕西电力》2010年第12期35-37,共3页Shanxi Electric Power

摘　　要：通过化学成分分析、低倍组织分析、显微组织分析、断口宏观分析及断口扫描电子显微镜分析等方法,分析了750 kV输电线路用压缩型耐张线夹引流板开裂失效原因。分析结果表明,耐张线夹开裂失效的主要原因是耐张线夹内部存在疏松、缩孔和非金属夹杂等缺陷以及化学成分不合格。The reason for cracking failure of the compression-type strain clamp drainage board on 750 kV transmission line is analyzed by the means of chemical analysis,macrostructure analysis,microstructure analysis,fracture macrostructure analysis and scanning electron microscopy analysis.The results show that the main reason is the existence of defects within the strain clamp,such as loosen,shrinkage cavity and non-metallic inclusions and unqualified chemical composition.

关 键 词：输电线路 耐张线夹 引流板 开裂失效 

分 类 号：TG142.1[一般工业技术—材料科学与工程]