焊管Issue(3)：55-59,5.
X80钢级热轧板卷及螺旋焊管拉伸性能统计分析
Statistic Analysis on Tensile Property of X80 Grade Hot Rolled Coil and SAWH Steel Pipe
李建一 1王旭 2孙灵丽 2宫庆 1石国红1
作者信息
- 1. 中国石油集团渤海石油装备制造有限公司 华油钢管公司，河北 青县 062658
- 2. 中国石油集团渤海石油装备制造有限公司研究院，天津 300457
- 折叠
摘要
Abstract
The tensile properties of X80 grade SAWH steel pipes and hot rolled coils with different size, which were manufactured by different steel company, were statistically analyzed. The results showed that the yield strength and tensile strength of steel pipes present a increasing trend, the increment of yield strength is higher than that of tensile strength, and the yield strength shows increasing trend, the elongation decreases. The deformation strengthening, which happened in the process of forming and hydrostatic test, is the main effect factor on the change of tensile properties. The deformation strengthening is affected by hydrostatic test pressure and test specimen size. The higher hydrostatic test pressure is, the closer to the original wall thickness sample size, the more obvious deformation strengthening effect and the greater increment.关键词
X80/螺旋焊管/拉伸性能/包申格效应/形变强化Key words
X80/SAWH steel pipe/tensile property/Bauschinger effect/deformation strengthening分类
能源科技引用本文复制引用
李建一,王旭,孙灵丽,宫庆,石国红..X80钢级热轧板卷及螺旋焊管拉伸性能统计分析[J].焊管,2014,(3):55-59,5.
