公开(公告)号：US07799149B2

公开(公告)日：2010-09-21

申请号：US12285031

申请日：2008-09-29

申请人： Taro Ohe ,  Keiichi Nakamura ,  Hideki Takabe ,  Toshiharu Abe ,  Tomoki Mori ,  Masakatsu Ueda

发明人： Taro Ohe ,  Keiichi Nakamura ,  Hideki Takabe ,  Toshiharu Abe ,  Tomoki Mori ,  Masakatsu Ueda

IPC分类号： C22C38/04 ,  C22C38/18 ,  C21D8/10 ,  C21D9/08

CPC分类号： C22C38/18 ,  C21D8/105 ,  C22C38/02 ,  C22C38/04 ,  C22C38/20 ,  Y10S148/909

摘要： An oil country tubular good for expansion according to the invention is expanded in a well. The oil country tubular good for expansion has a composition containing, in percentage by mass, 0.05% to 0.08% C, at most 0.50% Si, 0.80% to 1.30% Mn, at most 0.030% P, at most 0.020% S, 0.08% to 0.50% Cr, at most 0.01% N, 0.005% to 0.06% Al, at most 0.05% Ti, at most 0.50% Cu, and at most 0.50% Ni, and the balance consisting of Fe and impurities, and a structure having a ferrite ratio of at least 80%. The oil country tubular good for expansion has a yield strength in the range from 276 MPa to 379 MPa and a uniform elongation of at least 16%. Therefore, the oil country tubular good according to the invention has a high pipe expansion characteristic.

摘要翻译： 根据本发明的有利于膨胀的油井管在井中扩大。 适用于膨胀的油井管具有以质量计含有0.05％至0.08％C，至多0.50％Si，0.80％至1.30％Mn，至多0.030％P，至多0.020％S，0.08 ％至0.50％的Cr，至多0.01％的N，0.005％至0.06％的Al，至多0.05％的Ti，至多0.50％的Cu和至多0.50％的Ni，余量由Fe和杂质组成， 具有至少80％的铁素体比。 用于膨胀的油井管的屈服强度在276MPa至379MPa的范围内，并且具有至少16％的均匀伸长率。 因此，根据本发明的油井管状管具有较高的管膨胀特性。

公开(公告)号：US20090032150A1

公开(公告)日：2009-02-05

申请号：US12285031

申请日：2008-09-29

申请人： Taro Ohe ,  Keiichi Nakamura ,  Hideki Takabe ,  Toshiharu Abe ,  Tomoki Mori ,  Masakatsu Ueda

发明人： Taro Ohe ,  Keiichi Nakamura ,  Hideki Takabe ,  Toshiharu Abe ,  Tomoki Mori ,  Masakatsu Ueda

IPC分类号： C21D9/08 ,  C22C38/42

CPC分类号： C22C38/18 ,  C21D8/105 ,  C22C38/02 ,  C22C38/04 ,  C22C38/20 ,  Y10S148/909

摘要： An oil country tubular good for expansion according to the invention is expanded in a well. The oil country tubular good for expansion has a composition containing, in percentage by mass, 0.05% to 0.08% C, at most 0.50% Si, 0.80% to 1.30% Mn, at most 0.030% P, at most 0.020% S, 0.08% to 0.50% Cr, at most 0.01% N, 0.005% to 0.06% Al, at most 0.05% Ti, at most 0.50% Cu, and at most 0.50% Ni, and the balance consisting of Fe and impurities, and a structure having a ferrite ratio of at least 80%. The oil country tubular good for expansion has a yield strength in the range from 276 MPa to 379 MPa and a uniform elongation of at least 16%. Therefore, the oil country tubular good according to the invention has a high pipe expansion characteristic.

摘要翻译： 根据本发明的有利于膨胀的油井管在井中扩大。 适用于膨胀的油井管具有以质量计含有0.05％至0.08％C，至多0.50％Si，0.80％至1.30％Mn，至多0.030％P，至多0.020％S，0.08 ％至0.50％的Cr，至多0.01％的N，0.005％至0.06％的Al，至多0.05％的Ti，至多0.50％的Cu和至多0.50％的Ni，余量由Fe和杂质组成， 具有至少80％的铁素体比。 用于膨胀的油井管的屈服强度在276MPa至379MPa的范围内，并且具有至少16％的均匀伸长率。 因此，根据本发明的油井管状管具有较高的管膨胀特性。

公开(公告)号：US5849111A

公开(公告)日：1998-12-15

申请号：US718574

申请日：1996-11-06

申请人： Masaaki Igarashi ,  Kunio Kondo ,  Kazuhiro Ogawa ,  Masakatsu Ueda ,  Tomoki Mori

发明人： Masaaki Igarashi ,  Kunio Kondo ,  Kazuhiro Ogawa ,  Masakatsu Ueda ,  Tomoki Mori

IPC分类号： C22C38/00 ,  C22C38/44 ,  C22C38/58

CPC分类号： C22C38/44 ,  C22C38/001

摘要： A super duplex stainless steel with low susceptibility to weld cracks and high weldability, as well as the resistance to stress corrosion cracking and toughness of the weld zones. The steel is therefore suitable for a wide range of applications including heat exchangers exposed to sea water, brine-resistant equipment and structures, pipings in chemical plants, line pipes, and oil well pipes. The steel includes, in weight %, 2.0% or less Si, 2.0% or less Mn, 22.0-24.0% Cr, 4.5-6.5% Ni, 4.0-4.8% Mo, 0.001-0.15% Al, and 0.25-0.35% N, the remains of Fe and inevitable impurities including 0.03% or less C, 0.05% or less P and 0.005% or less S, and a RVS, the index of susceptibility to cracking on welding, 7 or less, and a PREW, the index of pitting resistance, greater than 40.

摘要翻译： PCT No.PCT / JP95 / 00647 Sec。 371日期：1996年11月6日 102（e）日期1996年11月6日PCT 1995年4月4日PCT PCT。 公开号WO95 / 27090 日期1995年10月12日一种具有低焊接裂纹敏感性和高可焊性的超级双相不锈钢，以及耐应力腐蚀开裂和焊接区韧性。 因此，钢适用于广泛的应用，包括暴露于海水的热交换器，防盐水设备和结构，化工厂的管道，管道管道和油井管道。 钢的重量％包括2.0％以下的Si，2.0％以下的Mn，22.0-24.0％的Cr，4.5-6.5％的Ni，4.0-4.8％的Mo，0.001-0.15％的Al和0.25-0.35％的N ，余量为Fe和不可避免的杂质，包括0.03％以下的C，0.05％以下的P和0.005％以下的S，RVS，焊接开裂敏感性指数为7以下，PREW， 的耐点蚀性，大于40。