摘要
采用宏观和微观形貌分析、材料性能试验、金相检验、螺栓载荷校核等方法对某掺稀泵压盖螺栓断裂原因进行分析。结果表明:高周疲劳导致掺稀泵压盖螺栓断裂,螺栓螺纹表面脱碳层的厚度超标、材料性能下降等对螺栓的疲劳断裂具有促进作用。
Macroscopic and microscopic morphology analysis,material performance test,metallographic examination,bolt load checking and other methods were used to analyze the fracture reason of the pressure cover bolt of a dilute pump.The results show that the high cycle fatigue leaded to the fracture of the bolt of the pressure cover of the dilute pump.The thickness of the decarburized layer on the surface of the bolt thread exceeded the standard and decline of material properties promoted fatigue fracture of bolt.
作者
吕庆钢
杨莎莎
王海博
姬丙寅
史交齐
LYU Qinggang;YANG Shasha;WANG Haibo;JI Bingyin;SHI Jiaoqi(Equipment Supply Centre,Northwest Exploration Bareau of Sinopec,Luntai 841600,China;Xi’an Serv Stress Engineering Technology Service Co.,Ltd.,Xi’an 710075,China)
出处
《理化检验（物理分册）》
CAS
2022年第4期52-55,67,共5页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
关键词
螺栓
疲劳断裂
载荷校核
高周疲劳
bolt
fatigue fracture
load checking
high cycle fatigue
