焊管2012，Vol.35Issue(10)：39-42,4.
大壁厚高钢级管线钢DWTT断口分析
Fracture Appearance Analysis of DWTT for Thick Wall and High-grade Pipeline Steel
蔺卫平 1何小东 2胡美娟 1李娜 2王晓燕1
作者信息
- 1. 中国石油集团石油管工程技术研究院,西安710065
- 2. 国家石油管材质量监督检验中心,西安710065
- 折叠
摘要
Abstract
Drop-weight tear test specimens with various types of notch and various thickness of heavy wall thickness pipeline steel were tested and fracture appearances were analyzed. The result indicated that the definition about invalid specimens in API RP 5L3 is already inapplicable for thick wall and high-grade pipeline steel; the abnormal fracture appearances likely appear in DWTT pressed notch specimen. So it is suggest that chevron notch and entire wall thickness specimen are used in test. For thick wall and high-grade pipeline steel, the fracture appearance easily appears lamination in DWTT no matter type of notch.关键词
落锤撕裂试验(DWTT)/缺口形式/异常断口Key words
drop-weight tear test(DWTT)/ type of notch/ abnormal fracture appearance分类
能源科技引用本文复制引用
蔺卫平,何小东,胡美娟,李娜,王晓燕..大壁厚高钢级管线钢DWTT断口分析[J].焊管,2012,35(10):39-42,4.
