油气输送焊管残余应力测试方法的研究  

Test method for residual stress in oil and gas line pipe.

作　　者：颜峰[1] 吉玲康[1] 冯耀荣[1] 霍春勇[1] 李鹤林[1] 朱维斗[2] 李年[2] 

机构地区：[1]中国石油天然气集团公司石油管材研究所 [2]西安交通大学

出　　处：《石油机械》1999年第4期18-20,共3页China Petroleum Machinery

摘　　要：介绍了３种测试焊管残余应力的方法，即Ｘ射线法、钻孔法和机械切割应力释放法，并分别对不同成型工艺的Ｘ６０油气输送焊管残余应力进行了测试。对比分析测试数据结果表明，Ｘ射线法测试数据普遍偏小且无一定规律性；钻孔法对钻孔技术要求较高，如果焊管残余应力值较大或存在应力梯度时，均不符合测试要求，且所测结果误差较大；而机械切割应力释放法的测试结果稳定可靠，具有较好的规律性。Three methods for testing the residual stress in oil and gas line pipe,i.e.Xray method,boring method and stress releasing method ,are introduced,and the residual stresses in various line pipes are tested by using these methods.Analysis of the test data shows that,the data measured by the Xray method is slightly small and has no regularity;the data measured by the boring method has large error and this method requires high machining technique;while the data measured by the stress releasing method is reliable and regular,therefore this method is the best choice.

关 键 词：原油输送 天然气输送 焊接管 残余应力 管道 

分 类 号：TE973.301[石油与天然气工程—石油机械设备]