焊管
銲管
한관
WELDED PIPE AND TUBE
2015年
3期
38-42
,共5页
管线钢管%断口分离%分级%评价
管線鋼管%斷口分離%分級%評價
관선강관%단구분리%분급%평개
line pipe%fracture separation%grading%evaluation
针对油气输送用管线钢管在进行力学性能试验时出现的断口分离现象，分析了夏比冲击试样断口分离的特征、产生原因及其对管道运行带来的安全隐患。提出了冲击试样断口分离程度的分级评价方法，以及用于断口分离评定的上升平台系数的确定方法。采用这两种方法对西气东输二线试制的L555/X80管材的断口分离情况进行了分析，对断口分离严重的钢厂提出了改进意见。并建议将该方法作为补充评定方法纳入相关标准。
針對油氣輸送用管線鋼管在進行力學性能試驗時齣現的斷口分離現象，分析瞭夏比遲擊試樣斷口分離的特徵、產生原因及其對管道運行帶來的安全隱患。提齣瞭遲擊試樣斷口分離程度的分級評價方法，以及用于斷口分離評定的上升平檯繫數的確定方法。採用這兩種方法對西氣東輸二線試製的L555/X80管材的斷口分離情況進行瞭分析，對斷口分離嚴重的鋼廠提齣瞭改進意見。併建議將該方法作為補充評定方法納入相關標準。
침대유기수송용관선강관재진행역학성능시험시출현적단구분리현상，분석료하비충격시양단구분리적특정、산생원인급기대관도운행대래적안전은환。제출료충격시양단구분리정도적분급평개방법，이급용우단구분리평정적상승평태계수적학정방법。채용저량충방법대서기동수이선시제적L555/X80관재적단구분리정황진행료분석，대단구분리엄중적강엄제출료개진의견。병건의장해방법작위보충평정방법납입상관표준。
Aiming at the fracture separation phenomena appeared in mechanical properties testing of oil and gas transportation pipeline, the characteristics, causes and the potential safety hazard to pipeline operation by Charpy impact tests fracture separation were analyzed, and a rating method for fracture separation degree of Charpy impact test was put forward. As well as the determination method of the lift platform coefficient. The fracture separation of L555/X80 line pipes in trial production for the Second West-to-East Pipeline Project were analyzed by the above two methods, some suggestions were given for steel makers whose product are with severe fracture separation. It’s suggested that this study results can be added into the standard as supplementary assessment method.
