焊管Issue(7)：9-12,17,5.
双焊炬自动焊焊接接头CTOD断裂韧性试验研究
Research on Welding Joint CTOD Fracture Toughness by Double Welding Torch Automatic Welding
方总涛 1李春润 1牛虎理 1胡艳华1
作者信息
- 1. 中国石油集团工程技术研究院 中国石油集团海洋工程重点实验室，天津 300451
- 折叠
摘要
Abstract
According to the fracture toughness test standard of BS7448, the CTOD at low temperature(5℃) of X65 steel double welding torch automatic welding joint with natural cooling and spray cooling was tested respectively. Taking specimen with size of B×2B (B for specimen thickness), and notch direction for NP to conduct three point bending test, and then formed P-V curve of weld and HAZ to calculate the CTOD value, and compared the welding joint CTOD values of natural air cooling and spray cooling. The result showed that spray after welding has no significant influence on CTOD value;this test method provides reference evidence for selecting welding method, welding specification parameters and spraying process parameters.关键词
焊接/焊接接头/裂纹尖端张开位移(CTOD)/断裂韧度Key words
welding/welding joint/crack tip opening displacement(CTOD)/fracture toughness分类
矿业与冶金引用本文复制引用
方总涛,李春润,牛虎理,胡艳华..双焊炬自动焊焊接接头CTOD断裂韧性试验研究[J].焊管,2014,(7):9-12,17,5.
