酸性条件下X80级高强度管线管  

Grade X80 High Strength Line Pipe Under Acidity Conditions

作　　者：王慧[1] 朱炜[1] 

机构地区：[1]宝鸡石油钢管有限责任公司焊接钢管研究所,陕西宝鸡721008

出　　处：《焊管》2005年第1期61-65,共5页Welded Pipe and Tube

摘　　要：通过对酸性条件下X80级高强度、大口径管线用钢和UOE钢管的实验室试验和工业性试验,提出了降低钢中Mn含量,同时在钢中加入适量Cr,并在轧后采取控制冷却的方法,在保证获得足够强度的同时,降低钢在酸性溶液中HIC敏感性的新观点。通过试验得出了降低HIC敏感性的Mn的临界含量和Cr的适宜含量;提出了控制焊缝最大硬度,可以改善钢的抗SSC性能的观点。The new standpoint of reducing content Mn in steel,simultaneously adding proper amount of Cr in steel and adopting control cooling method after rolling to reduce the HIC sensitivity of steel in acid solution under guaranteeing obtained enough strength is raised through lab test and industrial test of grade X80 high strength steel for large size pipeline and UOE pipe under acid condition.Reducing the critical content Mn of HIC sensitivity and proper content Cr is obtained through test.The standpoint of controlling weld seam's maximum hardness to improve the anti SSC property of steel is also raised.

关 键 词：管线管 高强度 控制冷却 焊缝 HIC 硬度 钢管 实验室试验 降低 大口径管 

分 类 号：TE973.1[石油与天然气工程—石油机械设备] TG162.84[金属学及工艺—热处理]