某油田管式泵柱塞断裂原因分析  

Fracture Reason Analysis of Plunger of Tubing Pump in An Oilfield

作　　者：龙岩 付安庆 安浩[2] 丁晗 

机构地区：[1]中国石油集团石油管工程技术研究院,陕西西安710077 [2]宝鸡石油机械有限责任公司,陕西宝鸡721002

出　　处：《热加工工艺》2016年第21期255-258,共4页Hot Working Technology

摘　　要：针对某油田一起管式泵柱塞断裂失效事故,采用化学成分分析、金相分析、断口形貌分析、腐蚀产物分析等方法,系统研究了该管式泵柱塞断裂原因。结果表明:该柱塞断裂属于腐蚀疲劳断裂,柱塞在斜轧穿孔过程中形成的大量内表面折叠缺陷是诱发腐蚀疲劳断裂的主要原因。Aiming at the fracture failure accident of tubular pump plunger in an oil field, the fracture reason of the plungerpump was investigated systematically by means of chemical analysis, metallographic analysis, fracture morphology analysisand corrosion products analysis. The results show the plunger fracture belongs to corrosion fatigue fracture, and a largenumber of inner-surface fold defects formed in the cross piercing process are main causes of induced corrosion fatiguefracture.

关 键 词：管式泵 折叠缺陷 腐蚀疲劳 失效分析 

分 类 号：TG335.7[金属学及工艺—金属压力加工]