焊管
銲管
한관
WELDED PIPE AND TUBE
2009年
7期
33-37
,共5页
高钢级管线钢%断裂韧性%夏比冲击功
高鋼級管線鋼%斷裂韌性%夏比遲擊功
고강급관선강%단렬인성%하비충격공
high grade pipeline steel%fracture toughness%Charpy impact energy
管线钢管的断裂韧性是进行管道断裂评估的重要参数,而断裂韧性数据的测试较为繁琐.常用的做法是根据管材的冲击韧性与断裂韧性之间的关系式进行估算.利用数理统计方法,基于试验数据样本,建立了X80高钢级管线钢断裂韧性与夏比冲击功之间的经验关系式,并根据统计检验理论,对经验关系式进行了检验.检验结果表明,所建立的经验关系式与样本数据有着高度相关性,与现有的经验公式相比,更适合于X80高钢级管线钢管断裂韧性的确定.
管線鋼管的斷裂韌性是進行管道斷裂評估的重要參數,而斷裂韌性數據的測試較為繁瑣.常用的做法是根據管材的遲擊韌性與斷裂韌性之間的關繫式進行估算.利用數理統計方法,基于試驗數據樣本,建立瞭X80高鋼級管線鋼斷裂韌性與夏比遲擊功之間的經驗關繫式,併根據統計檢驗理論,對經驗關繫式進行瞭檢驗.檢驗結果錶明,所建立的經驗關繫式與樣本數據有著高度相關性,與現有的經驗公式相比,更適閤于X80高鋼級管線鋼管斷裂韌性的確定.
관선강관적단렬인성시진행관도단렬평고적중요삼수,이단렬인성수거적측시교위번쇄.상용적주법시근거관재적충격인성여단렬인성지간적관계식진행고산.이용수리통계방법,기우시험수거양본,건립료X80고강급관선강단렬인성여하비충격공지간적경험관계식,병근거통계검험이론,대경험관계식진행료검험.검험결과표명,소건립적경험관계식여양본수거유착고도상관성,여현유적경험공식상비,경괄합우X80고강급관선강관단렬인성적학정.
Fracture toughness of pipeline steel pipe is an important parameter to evaluate pipeline fracture,and inspecting fracture toughness data is verbose.According to empirical equation between the Charpy impact energy and fracture toughness to estimate is common method.Using mathematical statistics method,a new empirical equation between the fracture toughness and Charpy impact energy of X80 high grade pipeline steel was developed on the basis of experiment sample data.And the theory of statistical test was used to inspect empirical equation.The inspection result indicated that the new empirical equation has high correlation with the sample data.Comparing the empirical equation with that of existing,the empirical equation developed here was more suitable for the X80 high grade pipeline steel,and can make better estimation for its fracture toughness.
