内部冷却系统在海底管线用厚壁弯管制造中的应用
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摘要
分析了海底管道设计的主要影响因素,指出海底管道的设计与陆上管道设计不同,其主要区别是管道壁厚不仅仅是由管道内部最大工作压力来决定的。结合弯管母管的特点,针对海底管线用厚壁弯管在热煨过程中淬透冷却速度对其性能的影响,提出了改善目前淬透冷却不足的解决措施。在弯管内部增加一套冷却系统,弯管成型过程中内外壁同时冷却,通过提高弯管淬火时的冷却速度,改善了弯管成型后的整体力学性能。
In this article,it analyzed the main influence factors of submarine pipeline design,pointed out that the design of submarine pipeline is different from the onshore pipeline,and the main difference is that the pipe wall thickness is not only determined by pipeline internal maximum working pressure.Combined with the characteristics of the bends main pipe,according to the influence of hardening cooling velocity of thick wall bends for submarine pipeline on its performance,it put forward solutions for improving insufficient hardening cooling.Adding a set cooling system in the bends,it conducted cooling on inner and outer pipe surface at the same time.Through increasing the quenching cooling rate,the overall mechanical properties of bends were improved after forming.
In this article,it analyzed the main influence factors of submarine pipeline design,pointed out that the design of submarine pipeline is different from the onshore pipeline,and the main difference is that the pipe wall thickness is not only determined by pipeline internal maximum working pressure.Combined with the characteristics of the bends main pipe,according to the influence of hardening cooling velocity of thick wall bends for submarine pipeline on its performance,it put forward solutions for improving insufficient hardening cooling.Adding a set cooling system in the bends,it conducted cooling on inner and outer pipe surface at the same time.Through increasing the quenching cooling rate,the overall mechanical properties of bends were improved after forming.
引文
[1]中国机械工程学会热处理学会.热处理手册(第1卷):工艺基础[M].北京:机械工业出版社,2008.
[2]王宝昌.海底输气管道强度设计[J].石油规划设计,1997(04):28-29.
[3]DNV-OS-F101—2010,海底管线系统规范[S].
[4]曹敏.X70管线钢弯管感应加热淬火性能研究[J].西安工程科技学院学报,2005,19(04):46-48.
[5]赵春.回火温度对X70管线钢感应加热弯管组织性能的影响[J].热加工工艺,2007,36(22):63-65.
[6]李为卫,熊庆人,刘迎来,等.加热温度对X70管线钢感应加热弯管组织性能的影响[J].热加工工艺,2003(05):38-39.
[7]邵靖利,丛相州.弯管制造工艺对X70钢弯管性能的影响[J].机械工人压力加工,2005(10):71-73.
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[10]高惠临.管线钢-组织性能焊接行为[M].西安:陕西科技出版社,1995.
[2]王宝昌.海底输气管道强度设计[J].石油规划设计,1997(04):28-29.
[3]DNV-OS-F101—2010,海底管线系统规范[S].
[4]曹敏.X70管线钢弯管感应加热淬火性能研究[J].西安工程科技学院学报,2005,19(04):46-48.
[5]赵春.回火温度对X70管线钢感应加热弯管组织性能的影响[J].热加工工艺,2007,36(22):63-65.
[6]李为卫,熊庆人,刘迎来,等.加热温度对X70管线钢感应加热弯管组织性能的影响[J].热加工工艺,2003(05):38-39.
[7]邵靖利,丛相州.弯管制造工艺对X70钢弯管性能的影响[J].机械工人压力加工,2005(10):71-73.
[8]李德忠,陈长青,付彦宏.国产厚壁大口径X70钢热煨弯管的研制[J].压力容器,2007,24(02):47-49.
[9]刘迎来,李平全.感应加热弯管的生产技术现状与发展[C]//石油管道工程应用基础研究论文集.北京:石油工业出版社,2001:181-183.
[10]高惠临.管线钢-组织性能焊接行为[M].西安:陕西科技出版社,1995.