API圆螺纹拉伸失效实验不合格的原因分析  

Analysis on Reasons for Failure of Tension Fail Test of API Round Thread

作　　者：刘国辉[1] 胡海青[1] 张海燕[1] 田伟[1] 王雪莹[1] Liu Guo-hui;Hu Hai-qing;Zhang Hai-yan;Tian Wei;Wang Xue-ying(Steel Tube Co. of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010,Inner Mongolia Autonomous Region, China)

机构地区：[1]内蒙古包钢钢联股份有限公司钢管公司

出　　处：《包钢科技》2019年第4期89-92,共4页Science & Technology of Baotou Steel

摘　　要：API圆螺纹套管接头做拉伸至失效实验,拉伸载荷未达到最小连接强度而接头发生了滑脱。文章利用有限元法对比钢管外径、钢管壁厚、钢管内径和螺纹锥度的变化对接头连接强度的影响。计算结果表明,钢管几何参数对连接强度影响较大,同时提出用于圆螺纹加工的平端管几何参数的控制原则。The tensile to failure experiment was carried out with the sleeve joint of API round thread and the tensile load did not reach the minimum connection strength so that the joints slipped. In the paper,the effects of changes of outer diameter,wall thickness and inner diameter of steel tube as well as taper of thread on connection strength of joints were compared with the finite element method. The calculation results showed that the effects of geometric parameters of steel tube were greater and the control principle for geometric parameters of plain-end tube for processing round thread was put forward.

关 键 词：连接强度 圆螺纹 有限元 

分 类 号：TE931.2[石油与天然气工程—石油机械设备]