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[1]黄晓辉　毕宗岳　赵西岐　张锦刚　韦奉　王博玉　詹文文.超临界CO2输送用L450M钢级HFW焊管开发[J].油气储运,2024,43(05):1-13.
　HUANG Xiaohui,MAO Nongzhao,ZHAO Xiqi,et al.The Development of X65 Steel Grade HFW Welded Pipe For Supercritical Carbon Dioxide Transport[J].Oil & Gas Storage and Transportation,2024,43(05):1-13.
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超临界CO2输送用L450M钢级HFW焊管开发

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 43 期数: 2024年05期 页码: 1-13 栏目: 出版日期: 2024-05-25
Title:
The Development of X65 Steel Grade HFW Welded Pipe For Supercritical Carbon Dioxide Transport
作者:
黄晓辉　毕宗岳　赵西岐　张锦刚　韦奉　王博玉　詹文文
Author(s):
HUANG Xiaohui;  MAO Nongzhao;  ZHAO Xiqi;  ZHANG Jingang;  WEI Feng;  WANG Boyu;  ZHAN-Wenwen
关键词:
超临界二氧化碳; L450钢; X65钢; 焊管; 韧脆转变温度
Keywords:
Supercritical carbon dioxide;  X65;  HFW welded pipe;  -45℃;  -75℃;  Tough-brittle transition temperature
分类号:
TG335
文献标志码:
A
摘要:
【目的】为满足超临界CO2输送管道用钢需求，【方法】采用低C中Mn微Ni合金化设计、高洁净化炼钢和大吨位压下轧制技术，开发出微观组织以细小扁平的多边形铁素体+铁素体+少量珠光体为主的L450M钢级（X65钢级）超临界CO2输送管用热轧卷板。针对设计压力16 MPa的超临界输送用219.1 mm×10 mm（管径×壁厚）高频焊接（High Frequency Welding, HFW）焊管，为保证该HFW焊管运行时具有抗起裂与抗断裂扩展能力，经过计算，要求-45 ℃下母材夏比冲击吸收能量单值不小于88 J、均值不小于117 J，-45℃下焊缝、热影响区夏比冲击吸收能量单值不小于42J、均值不小于56 J。【结果】经成型、焊接及热处理工艺研究，在成型挤压量5.25 mm，焊接速度17 m/min，焊缝热处理温度930 ℃工艺下，开发出低温性能优异的L450M钢级超临界输送用HFW焊管。经第三方检测，该焊管性能完全符合API Spec 5L(46版)标准与低温韧性要求，经压扁试验压至贴合，母材与焊缝均未出现任何裂纹，表明母材与焊缝具有很强的塑性，焊缝质量优异。母材屈服强度534 MPa，母材、焊缝的抗拉强度基本一致，分别为619 MPa、620 MPa，均达到不低于535 MPa的标准要求，强度裕量大。母材、焊缝及热影响区的硬度均不高于220 HV10且分布均匀。-45℃下焊缝冲击吸收能量为177～401 J、热影响区冲击吸收能量为200～415 J、母材冲击吸收能量为248～416 J，且母材、焊缝热影响区的韧脆转变温度均低于-60 ℃。【结论】可见该HFW焊管低温韧性优异，抗低温延性止裂能力高，且承受最大内压与外压能力分别达到62.29 MPa、38.9 MPa，完全满足超临界CO2输送用HFW焊管的运行需求。
Abstract:
By adopting low-carbon medium- Mn and micro-Ni alloying design, high-purity purification steel making and large-tonnage pressure-down rolling technology, the L450M supercritical carbon dioxide conveying pipe with PF+F+ a small amount of P have been developed with thin flat microstructure.Against 16MPa of design pressure for the ф219.1×10mmHFW welded pipes of supercritical carbon dioxidetransportation,it is necessary to ensure that the HFW welded pipe has the ability to resist cracking and anti-fracture expansion when running.According to the calculation requirements, at -45℃, the single value of base material impact energy is ≥88J, and the average value is ≥117J.At -45℃, the single value of weld and HAZ is ≥42J, and the average value is ≥56J. Through HFW welding pipe forming, welding and heat treatment process research, the Ø219.1×10mmHFW welding pipe for L450M steel grade of supercritical transportation with excellent low-temperature performance was developed with the extrusion volume was 5.25mm,and the welding speed was 17m/min ,and the weld heat treatment temperature was 930℃.After the third party inspection of the National Petroleum Pipe Quality Inspection and Testing Center,the Ø219.1×10mmHFW welded pipe for L450M steel grade of supercritical transportation is completely conform to the API Spec 5L(46 edition) standard and low temperature toughness requirements.Flattening test shows that there is no crack until it fits snugly, which shows that the base metal and weld have strong plasticity and the quality of HFW weld is excellent. The yield strength of base metal is 534MPa, and the tensile strength of base metal and weld is 619MPa and 620MPa respectively, which are basically the same, and both meet the standard requirements of ≥535MPa, with a large strength surplus. Hardness of base metal, weld and HAZ are all ≤220HV10 and uniformly distributed.Especially low-temperature toughness，At -45℃, the weld impact energy of the welded pipe is 177 ~ 401J, the HAZ impact energy is 200 ~ 415J, and the base material impact energy is 248 ~ 416J, and the ductile and brittle transition temperatures of the base material, weld and HAZ are all lower than -60℃, so the pipe has very high low temperature ductility cracking resistance. The maximum internal pressure and maximum external pressure can reach 62.29MPa and 38.9MPa respectively, which fully meets the safety of HFW welding pipe for supercritical carbon dioxide transportation.

相似文献/References:

[1]黄晓辉,毕宗岳,赵西岐,等.超临界CO2输送用L450M钢级HFW焊管开发[J].油气储运,2024,43(05):552.[doi:10.6047/j.issn.1000-8241.2024.05.008]
　HUANG Xiaohui,BI Zongyue,ZHAO Xiqi,et al.Development of L450M HFW pipes for supercritical CO2 transmission[J].Oil & Gas Storage and Transportation,2024,43(05):552.[doi:10.6047/j.issn.1000-8241.2024.05.008]

更新日期/Last Update: 2024-03-26