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公开(公告)号：US06436340B1
公开(公告)日：2002-08-20
申请号：US09485265
申请日：2000-02-24
申请人： Kazuhiko Shiotani , Akio Ohmori , Kimihiro Nishimura , Yasuyoshi Yamane , Fumimaru Kawabata , Keniti Amano
发明人： Kazuhiko Shiotani , Akio Ohmori , Kimihiro Nishimura , Yasuyoshi Yamane , Fumimaru Kawabata , Keniti Amano
IPC分类号： C22C3816
CPC分类号： C22C38/08 , C22C38/002 , C22C38/04 , C22C38/16
摘要： Steel is obtained which comprises by wt %, C: 0.001-0.025%, Si: not more than 0.60%, Mn: 0.10-3.00%, P: 0.005-0.030%, S: not more than 0.01%, Al: not more than 0.10%, Cu: 0.1-1.5%, Ni: 0.1-6.0%, B: 0.0001-0.0050%, and the balance being Fe and inevitable impurities; since the steel contains C and P in small contents, stable amorphous rusts are formed on the surface thereof at an early stage; and steel simultaneously realizes excellent weather resistance, material weldability and toughness particularly in an environment such as a seashore district and the like where salt is present in a large amount.
摘要翻译： 得到钢，其含量为C：0.001-0.025％，Si：不大于0.60％，Mn：0.10-3.00％，P：0.005-0.030％，S：0.01％以下，Al：不大于 Cu：0.1-1.5％，Ni：0.1-6.0％，B：0.0001-0.0050％，余量为Fe和不可避免的杂质; 由于钢含有少量的C和P，所以在其表面上形成稳定的非晶态锈， 特别是在诸如大量存在盐的海滨区等环境中，钢同时实现了优异的耐候性，材料的焊接性和韧性。
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公开(公告)号：US06517643B1
公开(公告)日：2003-02-11
申请号：US09202989
申请日：1998-12-23
IPC分类号： C21D706
CPC分类号： C22C38/04 , C21D7/06 , Y10S148/909
摘要： A steel pipe is provided which is excellent in resistance to outer surface stress corrosion cracking (SCC) when used for a pipeline without impairing the fundamental requirement for the steel as a pipeline. The steel pipe has a surface adjusted to have a mean line roughness Ra of up to 7 &mgr;m and a maximum height Rmax of up to 50 &mgr;m. The surface is adjusted by sand blasting to have this roughness.
摘要翻译： 提供一种钢管，其在用于管道时耐外表面应力腐蚀开裂（SCC）优异，而不损害作为管道的钢的基本要求。 钢管的表面被调整为具有高达7μm的平均线粗糙度Ra和最大50μm的最大高度Rmax。 通过喷砂调整表面以具有这种粗糙度。
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