X80钢级Φ1219mm、Φ1422mm感应加热弯管
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摘要
目前国内重大管线项目工程基本都采用X80钢级Φ1219mm大壁厚弯管,X80钢级Φ1422mm热煨弯管钢级高、口径大、壁厚大、制造工艺复杂,填补了国内空白。研制中解决了厚壁弯管的化学成分设计与强韧性控制技术难题,创新了内外同步冷却技术,通过整体加热煨制技术、最终回火热处理工艺,确保弯管整体性能。弯管强度韧性高、可焊接性好、使用寿命长,管体屈服强度平均超580MPa,抗拉强度平均超650MPa,屈强比小于0.90,-20℃母材冲击韧性平均超150J,-20℃焊缝冲击韧性平均超100J,性能质量达到国际先进水平。
Currently, China's main pipeline projects usually use X80 steel grade Φ1219 mm thick-wall bend. X80 steel grade Φ1422 mm heat induction bend fills the domestic blank thanks to its high steel grade, large diameter, large wall thickness and complicated manufacturing process. Some technological bottlenecks were solved in development and manufacture of the bend, such as design of chemical components for thick-wall bend and toughness control, while innovating inner and outer simultaneous cooling technology, overall heating induction technology and final tempering heat treatment process to ensure functions of the bend. It is good for toughness and weldability with a long service life. The average yield strength of the bend body exceeds 580 MPa and the average tensile strength is 650 MPa. The yield ratio is less than 0.90. The average impact toughness of mother material exceeds 150 J below-20°C while the average impact toughness of weld seam is higher than 100 J below-20°C. The functional quality reaches the world's advanced level.
Currently, China's main pipeline projects usually use X80 steel grade Φ1219 mm thick-wall bend. X80 steel grade Φ1422 mm heat induction bend fills the domestic blank thanks to its high steel grade, large diameter, large wall thickness and complicated manufacturing process. Some technological bottlenecks were solved in development and manufacture of the bend, such as design of chemical components for thick-wall bend and toughness control, while innovating inner and outer simultaneous cooling technology, overall heating induction technology and final tempering heat treatment process to ensure functions of the bend. It is good for toughness and weldability with a long service life. The average yield strength of the bend body exceeds 580 MPa and the average tensile strength is 650 MPa. The yield ratio is less than 0.90. The average impact toughness of mother material exceeds 150 J below-20°C while the average impact toughness of weld seam is higher than 100 J below-20°C. The functional quality reaches the world's advanced level.
引文
[1]Fazackerley W J,Manue P A,Chrtstensen L.美国第一条X80 HSLA管线[A].见:北京石油天然气管线工程技术发展、规范及焊接国际研讨会报告文集与论文选编[C].北京:CITIC-CBMM中信微合金化技术中心,2006:87.Fazackerley W J,Manue P A,Chrtstensen L.First X80HSLA pipeline in USA[A].in:Collection of Theses from Beijing International Seminar on Engineering Technological Development,Standards and Welding of Petroleum and Natural Gas Pipelines[C].Beijing:CITIC-CBMM Micro Alloying Center,2006:87.
[2]王晓香,李廷丰,付彦宏,等.X80级管线钢和感应加热弯管的开发[J].焊管,2009,32(6):30-35.Wang Xiaoxiang,Li Tingfeng,Fu Yanhong,et al.Development of X80 grade pipeline steel pipe and induction heating bend[J].Welded Pipe and Tube,2009,32(6):30-35.
[3]聂文金,张晓兵.采用优化的高温轧制工艺(OHTP)生产西气东输二线用X80管线钢钢板[A].Intenational Conference Oil Steel Pipeline[C].Beijing,2008:141-153.Nie Wenjin,Zhang Xiaobing.Use OHTP for production of X80 steel plates for Second West-East Gas Pipeline[A].in:International Conference Oil Steel Pipeline[C].Beijing,2008:141-153.
[4]Zheng Lei,Gao Sha.The development of high performance pipeline steel in China[A].in:International Conference on Steel Pipeline[C].Beijing,2008:19-20.
[2]王晓香,李廷丰,付彦宏,等.X80级管线钢和感应加热弯管的开发[J].焊管,2009,32(6):30-35.Wang Xiaoxiang,Li Tingfeng,Fu Yanhong,et al.Development of X80 grade pipeline steel pipe and induction heating bend[J].Welded Pipe and Tube,2009,32(6):30-35.
[3]聂文金,张晓兵.采用优化的高温轧制工艺(OHTP)生产西气东输二线用X80管线钢钢板[A].Intenational Conference Oil Steel Pipeline[C].Beijing,2008:141-153.Nie Wenjin,Zhang Xiaobing.Use OHTP for production of X80 steel plates for Second West-East Gas Pipeline[A].in:International Conference Oil Steel Pipeline[C].Beijing,2008:141-153.
[4]Zheng Lei,Gao Sha.The development of high performance pipeline steel in China[A].in:International Conference on Steel Pipeline[C].Beijing,2008:19-20.