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1. 发明授权

US5817275A Steel plate having excellent corrosion resistance and sulfide stress cracking resistance 失效
标题翻译：钢板具有优异的耐腐蚀性和耐硫化物应力开裂性
公开(公告)号：US5817275A
公开(公告)日：1998-10-06
申请号：US408655
申请日：1995-03-21
申请人： Hiroyuki Ogawa , Hiroshi Tamehiro , Akihiko Takahashi , Hajime Ishikawa , Takuya Hara
发明人： Hiroyuki Ogawa , Hiroshi Tamehiro , Akihiko Takahashi , Hajime Ishikawa , Takuya Hara
IPC分类号： C22C38/00 , C22C38/20 , C22C38/24 , C22C38/28 , C22C38/38
CPC分类号： C22C38/28 , C22C38/20 , C22C38/24
摘要： A steel plate comprising by weight C: 0.01 to 0.1%, Si: 0.02 to 0.5%, Mn: 0.6 to 2.0%, P
摘要翻译： 1.一种钢板，其包含C：0.01〜0.1％，Si：0.02〜0.5％，Mn：0.6〜2.0％，P <0.020％，S <0.010％，O <0.005％，Cr：0.1〜0.5％：0.1〜1.0％，Al：0.005〜0.05％，Ca：0.0005〜0.005％，Mn，S，O各自的含量调节为满足式Mnx（S + O）= 1.5×10 -2和0.01〜0.1％的选自Nb，V和Ti中的至少一种，余量由Fe和不可避免的杂质组成。该钢板在含有二氧化碳气体和硫化氢的环境中具有优异的耐腐蚀性和耐硫化物应力开裂性。

2. 发明授权

US5723089A Line pipe metal arc welded with wire alloy 失效
标题翻译：线管金属弧焊焊丝
公开(公告)号：US5723089A
公开(公告)日：1998-03-03
申请号：US824079
申请日：1997-03-24
申请人： Rikio Chijiiwa , Hiroyuki Ogawa , Koichi Shinada , Yoshinori Ogata , Hiroshi Tamehiro , Hajime Ishikawa , Isamu Kimoto , Yoshio Terada
发明人： Rikio Chijiiwa , Hiroyuki Ogawa , Koichi Shinada , Yoshinori Ogata , Hiroshi Tamehiro , Hajime Ishikawa , Isamu Kimoto , Yoshio Terada
IPC分类号： B23K35/02 , B23K35/30 , C22C38/28
CPC分类号： B23K35/3053 , B23K35/0261 , B23K35/3066 , B23K35/308 , Y10S148/909
摘要： A wire for gas metal arc welding containing 0.01 to 0.06 wt % of C, 0.10 to 0.60 wt % of Si, 0.9 to 3.1 wt % of Mn, 0.7 to 2.0 wt % of Cr, 0.005 to 0.06% of Ti, not greater than 0.08 wt % of Al and if necessary, 0.05 to 0.30 wt % of Cu, and the balance of Fe and unavoidable impurities. This wire improves the selective corrosion resistance and the low temperature toughness of the resulting weld metal, and is particularly suitable for circumferential welding of line pipes for transporting CO.sub.2 -containing petroleum, natural gases or CO.sub.2.
摘要翻译：含有C：0.01〜0.06重量％，Si：0.10〜0.60重量％，Mn：0.9〜3.1重量％，Cr：0.7〜2.0重量％，Ti：0.005〜0.06重量％ 0.08重量％的Al，如果需要，为0.05〜0.30重量％的Cu，余量为Fe和不可避免的杂质。该线材提高了所得到的焊接金属的选择性腐蚀性和低温韧性，特别适用于输送含CO 2的石油，天然气或二氧化碳的管线的周向焊接。

3. 发明授权

US06264760B1 Ultra-high strength, weldable steels with excellent ultra-low temperature toughness 失效
标题翻译：超高强度，可焊接的钢，具有优异的超低温韧性
公开(公告)号：US06264760B1
公开(公告)日：2001-07-24
申请号：US09123625
申请日：1998-07-28
申请人： Hiroshi Tamehiro , Hitoshi Asahi , Takuya Hara , Yoshio Terada , Michael J. Luton , Jayoung Koo , Narasimha-Rao V. Bangaru , Clifford W. Petersen
发明人： Hiroshi Tamehiro , Hitoshi Asahi , Takuya Hara , Yoshio Terada , Michael J. Luton , Jayoung Koo , Narasimha-Rao V. Bangaru , Clifford W. Petersen
IPC分类号： C22C3808
CPC分类号： C21D8/0226 , C21D1/19 , C21D2211/002 , C21D2211/008 , C22C38/04 , C22C38/08 , C22C38/12 , C22C38/14
摘要： An ultra-high strength steel having excellent ultra-low temperature toughness, a tensile strength of at least about 930 MPa (135 ksi), and a microstructure comprising predominantly fine-grained lower bainite, fine-grained lath martensite, or mixtures thereof, transformed from substantially unrecrystallized austenite grains and comprising iron and specified weight percentages of the additives: carbon, silicon, manganese, copper, nickel, niobium, vanadium, molybdenum, chromium, titanium, aluminum, calcium, Rare Earth Metals, and magnesium, is prepared by heating a steel slab to a suitable temperature; reducing the slab to form plate in one or more hot rolling passes in a first temperature range in which austenite recrystallizes; further reducing said plate in one or more hot rolling passes in a second temperature range below said first temperature range and above the temperature at which austenite begins to transform to ferrite during cooling; quenching said plate to a suitable Quench Stop Temperature; and stopping said quenching and allowing said plate to air cool to ambient temperature.
摘要翻译：具有优异的超低温韧性，至少约930MPa（135ksi）的拉伸强度和主要包含细粒度的下贝氏体，细粒状板条马氏体或其混合物的微观结构的超高强度钢被转化来自基本上未再结晶的奥氏体晶粒并且包含铁和指定重量百分比的添加剂：碳，硅，锰，铜，镍，铌，钒，钼，铬，钛，铝，钙，稀土金属和镁，由将钢板加热到合适的温度; 在奥氏体重结晶的第一温度范围内，在一个或多个热轧道中将板坯还原成板; 在低于所述第一温度范围的第二温度范围内并且高于在冷却期间奥氏体开始转变为铁素体的温度的一个或多个热轧道中进一步减少所述板; 将所述板淬火至合适的淬火停止温度; 并停止所述淬火并允许所述板空气冷却至环境温度。

4. 发明授权

US5798004A Weldable high strength steel having excellent low temperature toughness 失效
标题翻译：具有优异的低温韧性的可焊接高强度钢
公开(公告)号：US5798004A
公开(公告)日：1998-08-25
申请号：US714098
申请日：1997-01-14
申请人： Hiroshi Tamehiro , Hitoshi Asahi , Takuya Hara , Yoshio Terada
发明人： Hiroshi Tamehiro , Hitoshi Asahi , Takuya Hara , Yoshio Terada
IPC分类号： C21D8/02 , C22C38/04 , C22C38/08 , C22C38/48
CPC分类号： C21D8/0226 , C22C38/04 , C21D2211/002 , C21D2211/008 , C21D8/0263
摘要： This invention adds elements such as Cu, B, Cr, Ca, V, etc., to a low carbon-high Mn--Ni--Mo-trace Ti type steel, and allows the steel to have a tempered martensite/bainite mixed structure containing at least 60% of tempered martensite transformed from un-recrystallized austenite having a mean austenite grain size (d.gamma.) of not greater than 10 .mu.m as a micro-structure, or a tempered martensite structure containing at least 90% of martensite transformed from un-recrystallized austenite. The present invention further stipulates a P value to the range of 1.9 to 4.0 and thus provides a ultra-high strength steel having a tensile strength of at least 950 MPa (not lower than 100 of the API standard) and excellent in low temperature toughness, HAZ toughness and field weldability in cold districts.
摘要翻译： PCT No.PCT / JP96 / 00155 Sec。 371日期1997年1月14日 102（e）1997年1月14日PCT PCT 1996年1月26日PCT公布。公开号WO96 / 23083 日期1996年8月1日本发明将诸如Cu，B，Cr，Ca，V等的元素添加到低碳高Mn-Ni-Mo-Trace Ti型钢中，并允许钢具有回火马氏体或含有至少60％的平均奥氏体晶粒尺寸（dγ）不大于10μm的未再结晶奥氏体作为微结构的回火马氏体的贝氏体混合结构，或包含至少90°的回火马氏体组织从未再结晶奥氏体转变的马氏体的％。本发明进一步规定P值在1.9〜4.0的范围内，由此提供抗拉强度为至少950MPa（API标准的100以上），低温韧性优异的超高强度钢，冷区的HAZ韧性和现场焊接性。

5. 发明授权

US5716465A High-corrosion-resistant martensitic stainless steel having excellent weldability and process for producing the same 失效
标题翻译：具有优异焊接性的高耐腐蚀马氏体不锈钢及其制造方法
公开(公告)号：US5716465A
公开(公告)日：1998-02-10
申请号：US649701
申请日：1996-08-27
申请人： Takuya Hara , Asahi Hitoshi , Hiroshi Tamehiro , Taro Muraki , Akira Kawakami
发明人： Takuya Hara , Asahi Hitoshi , Hiroshi Tamehiro , Taro Muraki , Akira Kawakami
IPC分类号： C21D1/18 , C21D8/02 , C22C38/42
CPC分类号： C22C38/42 , C21D8/0205 , C21D1/18 , C21D2211/008
摘要： A high-corrosion-resistant martensitic stainless steel possessing excellent weldability and SSC resistance, having a tempered martensitic structure, characterized by comprising steel constituents satisfying by weight C: 0.005 to 0.035%, Si: not more than 0.50%, Mn: 0.1 to 1.0%, P: not more than 0.03%, S: not more than 0.005%, Mo: 1.0 to 3.0%, Cu: 1.0 to 4.0%, Ni: 1.5 to 5.0%, Al: not more than 0.06%, N: not more than 0.01%, and Cr satisfying a requirement represented by the formula 13>Cr+1.6Mo.gtoreq.8, C+N.gtoreq.0.03, 40C+34N+Ni+0.3Cu-1.1Cr-1.8 Mo.gtoreq.10, or further comprising at least one element selected from the group consisting of Ti: 0.05 to 0.1%, Zr: 0.01 to 0.2%, Ca: 0.001 to 0.02%, and REM: 0.003 to 0.4%, with the balance consisting essentially of Fe. A process for producing a martensitic stainless steel, comprising the steps of: subjecting a steel plate, produced by hot-rolling a stainless steel slab having the above composition, to austenitization at a temperature of Ac.sub.3 point to 1000.degree. C. to harden the steel plate; subjecting the hardened steel plate to final tempering at a temperature of 550.degree. C. to Ac.sub.1 point; and cold-rolling the steel plate.
摘要翻译： PCT No.PCT / JP95 / 01950 Sec。 371日期：1996年8月27日 102（e）日期1996年8月27日PCT提交1995年9月27日PCT公布。公开号WO96 / 10654 日期1996年4月11日具有回火马氏体组织的耐焊接性和耐SSC性优异的高耐腐蚀马氏体系不锈钢，其特征在于，含有C：0.005〜0.035％，Si：0.50％以下， Mn：0.1〜1.0％，P：0.03％以下S：0.005％以下，Mo：1.0〜3.0％，Cu：1.0〜4.0％，Ni：1.5〜5.0％，Al：0.06以下％，N：0.01以下，Cr满足式13> Cr + 1.6Mo> / = 8，C + N> = 0.03,40C + 34N + Ni + 0.3Cu-1.1Cr- 或者还包含选自Ti：0.05〜0.1％，Zr：0.01〜0.2％，Ca：0.001〜0.02％，REM：0.003〜0.4％的至少一种元素，与余量基本上由Fe组成。一种马氏体不锈钢的制造方法，其特征在于，包括以下步骤：将具有上述组成的不锈钢板进行热轧制成的钢板在Ac 3点〜1000℃的温度下进行奥氏体化，使钢盘子; 使淬火钢板在550℃至Ac1点的温度下进行最终回火; 并冷轧钢板。

6. 发明授权

US06248191B1 Method for producing ultra-high strength, weldable steels with superior toughness 失效
标题翻译：具有优异韧性的超高强度，可焊接钢的生产方法
公开(公告)号：US06248191B1
公开(公告)日：2001-06-19
申请号：US09123858
申请日：1998-07-28
申请人： Michael J. Luton , Jayoung Koo , Narasimha-Rao V. Bangaru , Clifford W. Petersen , Hiroshi Tamehiro , Hitoshi Asahi , Takuya Hara , Masaaki Sugiyama
发明人： Michael J. Luton , Jayoung Koo , Narasimha-Rao V. Bangaru , Clifford W. Petersen , Hiroshi Tamehiro , Hitoshi Asahi , Takuya Hara , Masaaki Sugiyama
IPC分类号： C21D800
CPC分类号： C21D6/005 , C21D1/19 , C21D8/0226 , C21D2211/002 , C21D2211/008
摘要： A method is provided for producing an ultra-high strength steel having a tensile strength of at least about 900 MPa (130 ksi), a toughness as measured by Charpy V-notch impact test at −40° C. (−40° F.) of at least about 120 joules (90 ft-lbs), and a microstructure comprising predominantly fine-grained lower bainite, fine-grained lath martensite, or mixtures thereof, transformed from substantially unrecrystallized austenite grains and comprising iron and specified weight percentages of the additives: carbon, silicon, manganese, copper, nickel, niobium, vanadium, molybdenum, chromium, titanium, aluminum, calcium, Rare Earth Metals, and magnesium. A steel slab is heated to a suitable temperature; the slab is reduced to form plate in one or more hot rolling passes in a first temperature range in which austenite recrystallizes; said plate is further reduced in one or more hot rolling passes in a second temperature range below said first temperature range and above the temperature at which austenite begins to transform to ferrite during cooling; said plate is quenched to a suitable Quench Stop Temperature; and said quenching is stopped and said plate is allowed to air cool to ambient temperature.
摘要翻译：提供一种制造抗拉强度为至少约900MPa（130ksi）的超高强度钢，-40℃下通过夏比V-缺口冲击试验测得的韧性的方法（-40°F））至少约120焦耳（90ft-lbs），以及由基本上未再结晶的奥氏体晶粒转化并且包含铁和特定重量百分比的主要由细晶粒的下贝氏体，细粒状板条马氏体或其混合物组成的微结构，添加剂：碳，硅，锰，铜，镍，铌，钒，钼，铬，钛，铝，钙，稀土金属和镁。将钢坯加热到合适的温度; 在奥氏体再结晶的第一温度范围内，在一个或多个热轧道中，将板坯还原成板; 所述板在一个或多个热轧道中在低于所述第一温度范围和高于在冷却期间奥氏体开始转变为铁素体的温度的温度范围内进一步减小; 所述板淬火至合适的淬火停止温度; 并且停止淬火，并使所述板空气冷却至环境温度。

7. 发明授权

US06228183B1 Ultra-high strength, weldable, boron-containing steels with superior toughness 失效
标题翻译：超高强度，可焊接，具有优异韧性的含硼钢
公开(公告)号：US06228183B1
公开(公告)日：2001-05-08
申请号：US09123791
申请日：1998-07-28
申请人： Narasimha-Rao V. Bangaru , Jayoung Koo , Michael J. Luton , Clifford W. Petersen , Hiroshi Tamehiro , Hitoshi Asahi , Takuya Hara , Yoshio Terada
发明人： Narasimha-Rao V. Bangaru , Jayoung Koo , Michael J. Luton , Clifford W. Petersen , Hiroshi Tamehiro , Hitoshi Asahi , Takuya Hara , Yoshio Terada
IPC分类号： C22C3814
CPC分类号： C22C38/06 , C21D1/19 , C21D8/00 , C21D2211/002 , C21D2211/008 , C22C38/04 , C22C38/12 , C22C38/14
摘要： An ultra-high strength boron-containing steel having a tensile strength of at least about 900 MPa (130 ksi), a toughness as measured by Charpy V-notch impact test at −40° C. (−40° F.) of at least about 120 joules (90 ft-lbs), and a microstructure comprising predominantly fine-grained lower bainite, fine-grained lath martensite, or mixtures thereof, transformed from substantially unrecrystallized austenite grains and comprising iron and specified weight percentages of the additives: carbon, silicon, manganese, copper, nickel, niobium, vanadium, molybdenum, chromium, titanium, aluminum, calcium, Rare Earth Metals, and magnesium, is prepared by heating a steel slab to a suitable temperature; reducing the slab to form plate in one or more hot rolling passes in a first temperature range in which austenite recrystallizes; further reducing said plate in one or more hot rolling passes in a second temperature range below said first temperature range and above the temperature at which austenite begins to transform to ferrite during cooling; quenching said plate to a suitable Quench Stop Temperature; and stopping said quenching and allowing said plate to air cool to ambient temperature.
摘要翻译：具有至少约900MPa（130ksi）拉伸强度的超高强度含硼钢，在-40℃（-40°F）下通过夏比V-缺口冲击试验测得的韧性至少约120焦耳（90ft-lbs），以及由基本上未再结晶的奥氏体晶粒转化并且包含铁和特定重量百分比的添加剂的主要包含细粒度的下贝氏体，细粒状板条马氏体或其混合物的微观结构：碳通过将钢坯加热到合适的温度来制备硅，锰，铜，镍，铌，钒，钼，铬，钛，铝，钙，稀土金属和镁，在奥氏体重结晶的第一温度范围内，在一个或多个热轧道中将板坯还原成板; 在低于所述第一温度范围的第二温度范围内并且高于在冷却期间奥氏体开始转变为铁素体的温度的一个或多个热轧道中进一步减少所述板; 将所述板淬火至合适的淬火停止温度; 并停止所述淬火并允许所述板空气冷却至环境温度。

8. 发明授权

US06532995B1 Super-high-strength line pipe excellent in low temperature toughness and production method thereof 有权
标题翻译：低温韧性优异的超高强度线管及其制造方法
公开(公告)号：US06532995B1
公开(公告)日：2003-03-18
申请号：US09478653
申请日：2000-01-06
申请人： Hitoshi Asahi , Hiroshi Tamehiro , Takuya Hara , Yoshio Terada , Shigeru Ohkita , Kunio Koyama
发明人： Hitoshi Asahi , Hiroshi Tamehiro , Takuya Hara , Yoshio Terada , Shigeru Ohkita , Kunio Koyama
IPC分类号： F16L900
CPC分类号： C22C38/12 , C22C38/04 , C22C38/08 , C22C38/44 , C22C38/46 , C22C38/58 , Y10T29/18
摘要： To provide a super-high strength line pipe that is excellent in low temperature toughness, can be field welded easily, and has a tensile strength of at least 900 MPa (exceeding ×100 of the API standard), and a production method thereof. The present invention relates to a super-high strength line pipe produced by shaping a steel plate into a pipe shape and arc welding seam portions, the strength of a base steel portion is 900 to 1,100 MPa and the strength of the weld metal is higher than the base steel strength −100 MPa. In the steel pipe, the Ni content of the weld metal is higher by at least 1% than that of the base steel. The combination of the chemical components of the steel plate with those of the weld metal, for accomplishing these steel pipes by a U&O step is shown concretely. A production method of the steel plate and the welding method for achieving the steel pipe are also described. Furthermore, a method of reducing the strength of the inner surface of the weld metal to restrict cracking at the time of pipe expansion is also shown.
摘要翻译：为了提供低温韧性优异的超高强度线管，可以容易地进行现场焊接，并且具有至少900MPa（超过API标准的×100）的拉伸强度及其制造方法。本发明涉及一种通过将钢板成形为管状和电弧焊缝部而制造的超高强度线管，基部钢的强度为900〜1100MPa，焊接金属的强度高于基钢强度-100MPa。在钢管中，焊接金属的Ni含量比基体钢高1％以上。具体地说，钢板的化学成分与焊接金属的化学成分的组合，通过U＆O工序来实现这些钢管。还描述了钢板的制造方法和用于实现钢管的焊接方法。此外，还示出了降低焊接金属内表面的强度以限制管膨胀时的开裂的方法。

9. 发明授权

US06224689B1 Ultra-high strength, weldable, essentially boron-free steels with superior toughness 失效
标题翻译：超高强度，可焊接，基本上无硼钢，韧性优越
公开(公告)号：US06224689B1
公开(公告)日：2001-05-01
申请号：US09123859
申请日：1998-07-28
申请人： Jayoung Koo , Michael J. Luton , Narasimha-Rao V. Bangaru , Clifford W. Petersen , Hiroshi Tamehiro , Hitoshi Asahi , Takuya Hara , Yoshio Terada
发明人： Jayoung Koo , Michael J. Luton , Narasimha-Rao V. Bangaru , Clifford W. Petersen , Hiroshi Tamehiro , Hitoshi Asahi , Takuya Hara , Yoshio Terada
IPC分类号： C22C3812
CPC分类号： C22C38/08 , C21D1/19 , C21D2211/002 , C21D2211/005 , C22C38/04 , C22C38/12 , C22C38/14
摘要： An ultra-high strength essentially boron-free steel having a tensile strength of at least about 900 MPa (130 ksi), a toughness as measured by Charpy V-notch impact test at −40° C. (−40° F.) of at least about 120 joules (90 ft-lbs), and a microstructure comprising predominantly fine-grained lower bainite, fine-grained lath martensite, or mixtures thereof, transformed from substantially unrecrystallized austenite grains and comprising iron and specified weight percentages of the additives: carbon, silicon, manganese, copper, nickel, niobium, vanadium, molybdenum, chromium, titanium, aluminum, calcium, Rare Earth Metals, and magnesium, is prepared by heating a steel slab to a suitable temperature; reducing the slab to form plate in one or more hot rolling passes in a first temperature range in which austenite recrystallizes; further reducing said plate in one or more hot rolling passes in a second temperature range below said first temperature range and above the temperature at which austenite begins to transform to ferrite during cooling; quenching said plate to a suitable Quench Stop Temperature; and stopping said quenching and allowing said plate to air cool to ambient temperature.
摘要翻译：具有至少约900MPa（130ksi）拉伸强度的超高强度基本上不含硼的钢，在-40℃（-40°F）下通过夏比V-缺口冲击试验测得的韧性至少约120焦耳（90ft-lbs），以及由基本上未再结晶的奥氏体晶粒转化并且包含铁和特定重量百分比的添加剂的主要包含细粒度的下贝氏体，细粒状板条马氏体或其混合物的显微组织：通过将钢坯加热到合适的温度来制备碳，硅，锰，铜，镍，铌，钒，钼，铬，钛，铝，钙，稀土金属和镁。在奥氏体重结晶的第一温度范围内，在一个或多个热轧道中将板坯还原成板; 在低于所述第一温度范围的第二温度范围内并且高于在冷却期间奥氏体开始转变为铁素体的温度的一个或多个热轧道中进一步减少所述板; 将所述板淬火至合适的淬火停止温度; 并停止所述淬火并允许所述板空气冷却至环境温度。

10. 发明授权

US5985053A Steel having improved toughness in welding heat-affected zone 失效
标题翻译：焊接热影响区韧性提高的钢
公开(公告)号：US5985053A
公开(公告)日：1999-11-16
申请号：US973446
申请日：1997-12-04
申请人： Takuya Hara , Hitoshi Asahi , Hiroshi Tamehiro , Ryuji Uemori , Naoki Saito
发明人： Takuya Hara , Hitoshi Asahi , Hiroshi Tamehiro , Ryuji Uemori , Naoki Saito
IPC分类号： C22C38/00 , C22C38/04 , C22C38/14 , C22C38/58 , C22C38/28 , C22C38/50
CPC分类号： C22C38/001 , C22C38/002 , C22C38/04 , C22C38/14
摘要： A steel having excellent HAZ toughness can be used for ships, buildings, pressure containers, linepipes, and so forth. The steel is of a Ti--Mg--O system steel containing at least 40 pcs/mm.sup.2 of oxide and composite oxide particles of Ti and Mg having a size of 0.001 to 5.0 .mu.m. A steel having excellent HAZ toughness can be produced, and the safety of structures using this steel can be remarkably improved.
摘要翻译： PCT No.PCT / JP97 / 01335 Sec。 371 1997年12月4日第 102（e）1997年12月4日PCT PCT 1997年4月17日PCT公布。公开号WO97 / 39157 PCT 日期1997年10月23日具有优异HAZ韧性的钢可用于船舶，建筑物，压力容器，管线等。该钢是含有至少40个/ mm 2的氧化物的Ti-Mg-O体系钢，具有0.001〜5.0μm的Ti和Mg的复合氧化物粒子。可以制造具有优异HAZ韧性的钢，并且可以显着提高使用该钢的结构的安全性。

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