焊管2017，Vol.40Issue(6)：34-37,4.DOI:10.19291/j.cnki.1001-3938.2017.06.006
HL级35CrMoA抽油杆杆体失效分析
HL Grade 35CrMoA Sucker Rod Body Failure Analysis
徐蔼彦 1陈举涛 2袁良帅 3王军 1姬丙寅1
作者信息
- 1. 西安三维应力工程技术有限公司, 西安 710061
- 2. 中国石油长庆油田分公司 物资供应处商检所, 陕西 咸阳 712000
- 3. 中国石化西南油气分公司 物资供应中心, 四川 德阳 618000
- 折叠
摘要
Abstract
In order to study the failure reason of HL grade 35CrMoA sucker rod body, the macroscopic observation and chemical composition analysis were conducted, and its microstructure and fracture morphology were analyzed and carried out finite element calculation. The result showed that the failure mode of the sucker rod was the typical corrosion fatigue fracture, and the microstructure mainly composed of tempered sorbite and ferrite;the fatigue crack derived from the corrosion pit of the sucker rod body surface, and the fatigue crack propagated along the acicular structure;under tensile load, the stress level was relatively high on the flange and the sucker rod body section mutation,eventually caused corrosion fatigue failure. Finally, the measures to prevent the failure of sucker rod were proposed, which will provide important theoretical basis for reducing the occurrence of the same kind of failure in oil field.关键词
35CrMoA/抽油杆/疲劳失效Key words
35CrMoA/sucker rod/fatigue failure分类
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徐蔼彦,陈举涛,袁良帅,王军,姬丙寅..HL级35CrMoA抽油杆杆体失效分析[J].焊管,2017,40(6):34-37,4.
