摘要
高压储氢容器用无缝钢管需同时具备优异的淬透性、抗氢脆性能和"先漏后爆"断裂韧性.系统分析了影响钢管性能的关键因素,建议通过优化化学成分,适当提高Cr和Mo的含量,适当添加Ni或V、Nb、Ti;改进炼钢工艺或者使用电渣重熔工艺,提高钢的洁净度,控制有害杂质元素和非金属夹杂物的含量;对连铸坯进行均质化处理或镦拔,或采用径向锻造制管工艺替代传统的热轧工艺,降低钢管内表面的粗糙度,并减少表面缺陷,提高材料的淬透性、抗氢脆和断裂韧性.研究为高压储氢容器用无缝钢管开发提供了借鉴.
It is a must for the seamless steel tube for hi-pressure hydrogen vessel service to be satisfactory to all the properties as required for the vessel,including the hardenability,the hydrogen brittleness resistance and the so called post-leakage burst fracture toughness.The key factors as affecting the performances of the steel tube are analyzed.Accord-ingly relevant suggestions are proposed,for the purpose of improving the above mentioned properties of the steel tube,involving such aspects as optimizing the chemical composition by means of properly increasing the contents of Cr and Mo,and properly adding Ni,V Nb and Ti;improving the steel-making process,or employing the electroslag remelting process to increase the steel cleanness,and mean while to control the contents of both harmful impurity elements and the non-metallic inclusions;conducting homogenization treatment and upset drawing of the CC billet or using the radial forg-ing pipe-making process instead of the conventional hot-rolling process in a bid to reduce inner surface roughness and surface defects of the steel pipe,and to improve the pipe's hardenability,hydrogen brittleness resistance and fracture toughness.The research result provides certain references for further development of the seamless steel tube for hi-pressure hydrogen vessel service.
作者
王洪海
陈冬
朱光亚
许胜
WANG Honghai;CHEN Dong;ZHU Guangya;XU Sheng(Dexin Steel Pipe(China)Co.,Ltd.,Wuxi 214177,China)
出处
《钢管》
2025年第5期10-15,共6页
Steel Pipe
关键词
高压储氢容器
无缝钢管
淬透性
氢脆控制
hi-pressure hydrogen vessel
seamless steel tube
hardenability
control of hydrogen brittleness
