摘要
某油田抽油杆仅使用了一个多月即发生了断裂。采用化学分析,腐蚀产物的测定,断口的宏、微观形貌和金相组织的观察及原油的组成测定等方法对断裂抽油杆进行了分析。结果表明,该抽油杆存在严重的带状组织,在碱性介质和工作应力共同作用下发生腐蚀疲劳断裂。
The oil-suck-rod broken after using only one month in some oil field. The chemical composition, corrosion products, macro and micro-fractograph, metallographic structure and crude oil were analysed. The results showed that the heavy banded structure led to corrosion fatigue fracture in the alkaline medium and working stress.
出处
《理化检验（物理分册）》
CAS
2008年第4期203-205,208,共4页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
关键词
抽油杆
断口
显微组织
疲劳
非金属夹杂
带状组织
失效分析
Oil-suck rod
Fractograph
Microstructure
Fatigue
Nonmetal inclusion
Banded structure
Failure analysis
