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1. 发明申请

US20120267014A1 METHOD FOR MANUFACTURING SEAMLESS STEEL PIPE FOR LINE PIPE AND SEAMLESS STEEL PIPE FOR LINE PIPE 有权
标题翻译：线管用线管和无缝钢管制造无缝钢管的方法
公开(公告)号：US20120267014A1
公开(公告)日：2012-10-25
申请号：US13540016
申请日：2012-07-02
申请人： Keisuke Hitoshio , Kunio Kondo , Yuji Arai
发明人： Keisuke Hitoshio , Kunio Kondo , Yuji Arai
IPC分类号： C21D9/08 , C22C38/04 , C22C38/18 , C22C38/08 , C22C38/38 , C22C38/02 , C22C38/16
CPC分类号： C21D8/105 , C21D1/18 , C21D9/08 , C21D9/085 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/50 , F16L9/02
摘要： There is provided a method for manufacturing a seamless steel pipe for line pipe, capable of improving the toughness of the seamless steel pipe for line pipe. A round billet having a chemical composition, by mass percent, of C: 0.02 to 0.15%, Si: at most 0.5%, and Mn: 0.5 to 2.5%, the balance being Fe and impurities, is heated. The heated round billet is piercing-rolled to produce a hollow shell. The hollow shell is elongated and rolled and sized to produce a seamless steel pipe. The seamless steel pipe is water cooled, and the water cooling is stopped when the temperature of the seamless steel pipe reaches at most 450° C. The water-cooled seamless steel pipe is quenched, and the quenched seamless steel pipe is tempered.
摘要翻译：提供一种能够提高线管用无缝钢管的韧性的管线管用无缝钢管的制造方法。将化学组成按C：0.02〜0.15％，Si：0.5％以下，Mn：0.5〜2.5％的化学组成的圆坯加热，其余为Fe和杂质。加热的圆形坯料被穿孔轧制以制造中空壳体。中空的外壳是细长的并且被轧制和大小以产生无缝钢管。无缝钢管水冷却，当无缝钢管的温度达到450℃以上时，水冷停止。水冷无缝钢管淬火，淬火无缝钢管回火。

2. 发明授权

US07566416B2 Steel pipe for an airbag inflator and a process for its manufacture 有权
标题翻译：用于气囊充气机的钢管及其制造方法
公开(公告)号：US07566416B2
公开(公告)日：2009-07-28
申请号：US11260369
申请日：2005-10-28
申请人： Takashi Takano , Yuji Arai , Kunio Kondo , Keisuke Hitoshio
发明人： Takashi Takano , Yuji Arai , Kunio Kondo , Keisuke Hitoshio
IPC分类号： C22C38/18 , C22C38/00 , C21D9/08 , B60R21/26
CPC分类号： C21D9/08 , B60R21/268
摘要： A steel pipe for an airbag inflator having a high strength of at least 900 MPa and preferably at least 1000 MPa in tensile strength along with a high toughness and exhibiting good resistance to bursting such that it has no propagation of cracks in a burst test at −40° C. or below is manufactured by quenching a pipe of a steel comprising, in mass %, C: 0.05-0.20 %, Si: 0.1-1.0 %, P: at most 0.025 %, S: at most 0.010 %, Cr: 0.05-1.45 %, Al: at most 0.10 %, and one or both of Ti and Mn satisfying Ti≦0.02% and 0.4%≦Mn+40Ti≦1.2% from a temperature of at least the Ac1 transformation point of the steel, tempering the pipe at a temperature lower than the Ac1 transformation point, applying cold working to it with a reduction of area of at most 65%, and subjecting it to stress relief annealing at a temperature lower than the Ac1 transformation point. The ratio L/T of the X-ray integrated intensity ratio of the {110} plane measured for the cross section perpendicular to the axial direction L of the steel pipe to that measured for the cross section perpendicular to the circumferential direction T is at most 50.
摘要翻译：一种用于气囊充气机的钢管，其具有高强度至少900MPa，优选至少1000MPa的拉伸强度以及高韧性并且表现出良好的抗爆裂性，使得其在爆破试验中不会发生裂纹， 40℃以下是通过以质量％C：0.05〜0.20％，Si：0.1〜1.0％，P：0.025％以下，S：0.010％以下，Cr：：0.05-1.45％，Al：至多0.10％，并且从至少Ac1相变点的温度至少满足Ti <0.02％和0.4％<= Mn + 40Ti <= 1.2％的Ti和Mn中的一种或两种钢在低于Ac1相变点的温度下回火管道，以至少65％的面积减少对其进行冷加工，并在低于Ac1相变点的温度下进行应力消除退火。与垂直于圆周方向T的横截面测量的垂直于钢管的轴线方向L的横截面测量的{110}面的X射线积分强度比的比L / T最多 50。

3. 发明申请

US20060124211A1 Steel pipe for an airbag inflator and a process for its manufacture 有权
标题翻译：用于气囊充气机的钢管及其制造方法
公开(公告)号：US20060124211A1
公开(公告)日：2006-06-15
申请号：US11260369
申请日：2005-10-28
申请人： Takashi Takano , Yuji Arai , Kunio Kondo , Keisuke Hitoshio
发明人： Takashi Takano , Yuji Arai , Kunio Kondo , Keisuke Hitoshio
IPC分类号： C21D9/08 , C22C38/12 , B60R21/26
CPC分类号： C21D9/08 , B60R21/268
摘要： A steel pipe for an airbag inflator having a high strength of at least 900 MPa and preferably at least 1000 MPa in tensile strength along with a high toughness and exhibiting good resistance to bursting such that it has no propagation of cracks in a burst test at −40° C. or below is manufactured by quenching a pipe of a steel comprising, in mass %, C: 0.05-0.20 %, Si: 0.1-1.0 %, P: at most 0.025 %, S: at most 0.010 %, Cr: 0.05-1.45 %, Al: at most 0.10 %, and one or both of Ti and Mn satisfying Ti
摘要翻译：一种用于气囊充气机的钢管，其具有高强度至少900MPa，优选至少1000MPa的拉伸强度以及高韧性并且表现出良好的抗爆裂性，使得其在爆破试验中不会发生裂纹， 40℃以下是通过以质量％C：0.05〜0.20％，Si：0.1〜1.0％，P：0.025％以下，S：0.010％以下，Cr：：0.05-1.45％，Al：至多0.10％，并且从至少Ac 1的温度满足Ti <0.02％和0.4％<= Mn + 40Ti <= 1.2％的Ti和Mn中的一种或两种转化点，在低于Ac 1 H 1相变点的温度下回火管道，以至少65％的面积减少进行冷加工，并对其进行处理在低于Ac 1 H 1相变点的温度下进行应力消除退火。与垂直于圆周方向T的横截面测量的垂直于钢管的轴线方向L的横截面测量的{110}面的X射线积分强度比的比L / T最多 50。

4. 发明授权

US09175360B2 Method for manufacturing seamless steel pipe for line pipe and seamless steel pipe for line pipe 有权
标题翻译：线管用无缝钢管及管线无缝钢管的制造方法
公开(公告)号：US09175360B2
公开(公告)日：2015-11-03
申请号：US13540016
申请日：2012-07-02
申请人： Keisuke Hitoshio , Kunio Kondo , Yuji Arai
发明人： Keisuke Hitoshio , Kunio Kondo , Yuji Arai
IPC分类号： C21D9/08 , C22C38/00 , C22C38/08 , C21D8/10 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/50 , C21D1/18 , F16L9/02
CPC分类号： C21D8/105 , C21D1/18 , C21D9/08 , C21D9/085 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/50 , F16L9/02
摘要： There is provided a method for manufacturing a seamless steel pipe for line pipe, capable of improving the toughness of the seamless steel pipe for line pipe. A round billet having a chemical composition, by mass percent, of C: 0.02 to 0.15%, Si: at most 0.5%, and Mn: 0.5 to 2.5%, the balance being Fe and impurities, is heated. The heated round billet is piercing-rolled to produce a hollow shell. The hollow shell is elongated and rolled and sized to produce a seamless steel pipe. The seamless steel pipe is water cooled, and the water cooling is stopped when the temperature of the seamless steel pipe reaches at most 450° C. The water-cooled seamless steel pipe is quenched, and the quenched seamless steel pipe is tempered.
摘要翻译：提供一种能够提高线管用无缝钢管的韧性的管线管用无缝钢管的制造方法。将化学组成按C：0.02〜0.15％，Si：0.5％以下，Mn：0.5〜2.5％的化学组成的圆坯加热，其余为Fe和杂质。加热的圆形坯料被穿孔轧制以制造中空壳体。中空的外壳是细长的并且被轧制和大小以产生无缝钢管。无缝钢管水冷却，当无缝钢管的温度达到450℃以上时，水冷停止。水冷无缝钢管淬火，淬火无缝钢管回火。

5. 发明授权

US06878219B2 High strength steel pipe for an air bag and a process for its manufacture 有权
标题翻译：用于气囊的高强度钢管及其制造方法
公开(公告)号：US06878219B2
公开(公告)日：2005-04-12
申请号：US10304698
申请日：2002-11-27
申请人： Kunio Kondo , Miyuki Yamamoto , Takashi Takano , Kenichi Beppu , Susumu Hirano , Keisuke Hitoshio , Hidetoshi Kurata
发明人： Kunio Kondo , Miyuki Yamamoto , Takashi Takano , Kenichi Beppu , Susumu Hirano , Keisuke Hitoshio , Hidetoshi Kurata
IPC分类号： B60R21/268 , C21D1/18 , C21D8/10 , C21D9/08 , C22C38/20 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/40 , C22C38/42 , C22C38/48 , C22C38/50 , C22C38/58 , C22C38/18
CPC分类号： C22C38/40 , B60R21/268 , C21D1/18 , C21D8/10 , C21D9/08 , C22C38/20 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/42 , C22C38/48 , C22C38/50 , C22C38/58
摘要： In order to manufacture a steel pipe for an air bag which can cope with increase in the pressure of gas blown into an air bag and decreases in the wall thickness of an accumulator, a steel having a composition, mass %, of: C: 0.05-0.20%,Si: 0.1-1.0%,Mn: 0.20-2.0%, P: at most 0.025%,S: at most 0.010%,Cr: 0.05-1.0%, Al: at most 0.10%, if necessary at least one of Mo: at most 0.50%, Ni: at most 1.5%, Cu: at most 0.5%, V: at most 0.2%, Ti: at most 0.1%, Nb: at most 0.1%, and B: at most 0.005%, andalso if necessary, at least one of Ca: at most 0.01%, Mg: at most 0.01%, and REM (rare earth elements): at most 0.01%,and a remainder of Fe and impurities is used to produce a steel pipe, and the pipe is then subjected to cold working to predetermined dimensions, then to heating to a temperature of at least the Ac1 transformation temperature followed by quenching, and then to tempering at a temperature no higher than the Ac1 transformation temperature.
摘要翻译：为了制造能够应对气泡吹入的气体的压力增加并且蓄压器的壁厚减小的气囊用钢管，具有质量％的组成，如果需要， Mo：至少0.50％，Ni：1.5％以下，Cu：0.5％以下，V：0.2％以下，Ti：0.1％以下，Nb：0.1％以下，B： 0.005％，如果需要，可以使用Ca：0.01％以下，Mg：0.01％以下，REM（稀土元素）：0.01％以下，Fe和杂质的余量中的至少一种，然后将管冷却至预定尺寸，然后加热至至少Ac1相变温度，然后淬火，然后在不高于Ac1转变温度的温度下回火。

6. 发明申请

US20130000790A1 SEAMLESS STEEL PIPE FOR LINE PIPE AND METHOD FOR MANUFACTURING THE SAME 有权
标题翻译：用于线管的无缝钢管及其制造方法
公开(公告)号：US20130000790A1
公开(公告)日：2013-01-03
申请号：US13609837
申请日：2012-09-11
申请人： Yuji ARAI , Keisuke Hitoshio
发明人： Yuji ARAI , Keisuke Hitoshio
IPC分类号： F16L9/02 , C21D8/10 , C21D11/00
CPC分类号： C21D9/08 , C21D8/105 , C22C38/22 , C22C38/24
摘要： A seamless steel pipe for line pipe having high strength and high toughness contains, by mass percent, C: 0.02 to 0.10%, Si: at most 0.5%, Mn: 0.5 to 2.0%, Al: 0.01 to 0.1%, P: at most 0.03%, S: at most 0.005%, Ca: at most 0.005%, and N: at most 0.007%, and further contains at least one selected from a group consisting of Ti: at most 0.008%, V: less than 0.06%, and Nb: at most 0.05%, the balance being Fe and impurities. A carbon equivalent Ceq defined by Formula (1) is at least 0.38, a content of Ti, V and Nb satisfies Formula (2), and the size of carbo-nitride containing at least one of Ti, V, Nb and Al is at most 200 nm, Ceq=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15 (1) Ti+V+Nb
摘要翻译：具有高强度，高韧性的线管用无缝钢管以质量％计含有C：0.02〜0.10％，Si：0.5％以下，Mn：0.5〜2.0％，Al：0.01〜0.1％，P：at 最多0.03％，S：0.005％以下，Ca：0.005％以下，N：0.007％以下，进一步含有选自Ti：0.008％以下，V：0.06以下的至少1种％，Nb：0.05％以下，余量为Fe和杂质。由式（1）定义的碳当量Ceq至少为0.38，Ti，V和Nb的含量满足式（2），并且含有Ti，V，Nb和Al中的至少一种的碳氮化物的尺寸在最大200nm，Ceq = C + Mn / 6 +（Cr + Mo + V）/ 5 +（Ni + Cu）/ 15（1）Ti + V + Nb <0.06（2）。

7. 发明授权

US07846274B2 High strength steel pipe for an air bag 有权
标题翻译：用于气囊的高强度钢管
公开(公告)号：US07846274B2
公开(公告)日：2010-12-07
申请号：US10948581
申请日：2004-09-24
申请人： Kunio Kondo , Miyuki Yamamoto , Takashi Takano , Kenichi Beppu , Susumu Hirano , Keisuke Hitoshio , Hidetoshi Kurata
发明人： Kunio Kondo , Miyuki Yamamoto , Takashi Takano , Kenichi Beppu , Susumu Hirano , Keisuke Hitoshio , Hidetoshi Kurata
IPC分类号： C22C38/18
CPC分类号： C22C38/40 , B60R21/268 , C21D1/18 , C21D8/10 , C21D9/08 , C22C38/20 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/42 , C22C38/48 , C22C38/50 , C22C38/58
摘要： In order to manufacture a steel pipe for an air bag which can cope with increase in the pressure of gas blown into an air bag and decreases in the wall thickness of an accumulator, a steel having a composition, mass %, of: C: 0.05-0.20%, Si: 0.1-1.0%, Mn: 0.20-2.0%, P: at most 0.025%, S: at most 0.010%, Cr: 0.05-1.0%, Al: at most 0.10%, if necessary at least one of Mo: at most 0.50%, Ni: at most 1.5%, Cu: at most 0.5%, V: at most 0.2%, Ti: at most 0.1%, Nb: at most 0.1%, and B: at most 0.005%, and also if necessary, at least one of Ca: at most 0.01%, Mg: at most 0.01%, and REM (rare earth elements): at most 0.01%, and a remainder of Fe and impurities is used to produce a steel pipe, and the pipe is then subjected to cold working to predetermined dimensions, then to heating to a temperature of at least the Ac1 transformation temperature followed by quenching, and then to tempering at a temperature no higher than the Ac1 transformation temperature.
摘要翻译：为了制造气囊用钢管，能够应对气泡吹入的气体的压力增加，蓄压器的壁厚减小，组成质量％为C：0.05的钢 -0.20％，Si：0.1〜1.0％，Mn：0.20〜2.0％，P：0.025％以下，S：0.0％以下，Cr：0.05〜1.0％，Al：0.10％ Mo：0.50以下，Ni：1.5％以下，Cu：0.5％以下，V：0.2％以下，Ti：0.1％以下，Nb：0.1％以下，B：0.005以下％，根据需要，还可以使用Ca：0.01％以下，Mg：0.01％以下，REM（稀土元素）：0.01％以下，Fe和杂质余量中的至少一种，然后将管冷却至预定尺寸，然后加热至至少Ac1相变温度，然后淬火，然后在不高于Ac1转变温度的温度下回火。

8. 发明申请

US20050039826A1 High strength steel pipe for an air bag and a process for its manufacture 有权
标题翻译：用于气囊的高强度钢管及其制造方法
公开(公告)号：US20050039826A1
公开(公告)日：2005-02-24
申请号：US10948581
申请日：2004-09-24
申请人： Kunio Kondo , Miyuki Yamamoto , Takashi Takano , Kenichi Beppu , Susumu Hirano , Keisuke Hitoshio , Hidetoshi Kurata
发明人： Kunio Kondo , Miyuki Yamamoto , Takashi Takano , Kenichi Beppu , Susumu Hirano , Keisuke Hitoshio , Hidetoshi Kurata
IPC分类号： B60R21/268 , C21D1/18 , C21D8/10 , C21D9/08 , C22C38/20 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/40 , C22C38/42 , C22C38/48 , C22C38/50 , C22C38/58 , C22C38/44
CPC分类号： C22C38/40 , B60R21/268 , C21D1/18 , C21D8/10 , C21D9/08 , C22C38/20 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/42 , C22C38/48 , C22C38/50 , C22C38/58
摘要： In order to manufacture a steel pipe for an air bag which can cope with increase in the pressure of gas blown into an air bag and decreases in the wall thickness of an accumulator, a steel having a composition, mass %, of: C: 0.05-0.20%, Si: 0.1-1.0%, Mn: 0.20-2.0%, P: at most 0.025%, S: at most 0.010%, Cr: 0.05-1.0%, Al: at most 0.10%, if necessary at least one of Mo: at most 0.50%, Ni: at most 1.5%, Cu: at most 0.5%, V: at most 0.2%, Ti: at most 0.1%, Nb: at most 0.1%, and B: at most 0.005%, and also if necessary, at least one of Ca: at most 0.01%, Mg: at most 0.01%, and REM (rare earth elements): at most 0.01%, and a remainder of Fe and impurities is used to produce a steel pipe, and the pipe is then subjected to cold working to predetermined dimensions, then to heating to a temperature of at least the Ac1 transformation temperature followed by quenching, and then to tempering at a temperature no higher than the Ac1 transformation temperature.
摘要翻译：为了制造气囊用钢管，能够应对气泡吹入的气体的压力增加，蓄压器的壁厚减小，组成质量％为C：0.05的钢 -0.20％，Si：0.1〜1.0％，Mn：0.20〜2.0％，P：0.025％以下，S：0.0％以下，Cr：0.05〜1.0％，Al：0.10％ Mo：0.50以下，Ni：1.5％以下，Cu：0.5％以下，V：0.2％以下，Ti：0.1％以下，Nb：0.1％以下，B：0.005以下％，根据需要，还可以使用Ca：0.01％以下，Mg：0.01％以下，REM（稀土元素）：0.01％以下，Fe和杂质余量中的至少一种，然后将管冷却至预定尺寸，然后加热至至少Ac1相变温度，然后淬火，然后在不高于Ac1转变温度的温度下回火。

9. 发明授权

US08709174B2 Seamless steel pipe for line pipe and method for manufacturing the same 有权
标题翻译：管道无缝钢管及其制造方法
公开(公告)号：US08709174B2
公开(公告)日：2014-04-29
申请号：US13609837
申请日：2012-09-11
申请人： Yuji Arai , Keisuke Hitoshio
发明人： Yuji Arai , Keisuke Hitoshio
IPC分类号： C22C38/00 , C21D11/00 , C21D9/08 , C22C38/12
CPC分类号： C21D9/08 , C21D8/105 , C22C38/22 , C22C38/24
摘要： A seamless steel pipe for line pipe having high strength and high toughness contains, by mass percent, C: 0.02 to 0.10%, Si: at most 0.5%, Mn: 0.5 to 2.0%, Al: 0.01 to 0.1%, P: at most 0.03%, S: at most 0.005%, Ca: at most 0.005%, and N: at most 0.007%, and further contains at least one selected from a group consisting of Ti: at most 0.008%, V: less than 0.06%, and Nb: at most 0.05%, the balance being Fe and impurities. A carbon equivalent Ceq defined by Formula (1) is at least 0.38, a content of Ti, V and Nb satisfies Formula (2), and the size of carbo-nitride containing at least one of Ti, V, Nb and Al is at most 200 nm, Ceq=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15 (1) Ti+V+Nb
摘要翻译：具有高强度，高韧性的线管用无缝钢管以质量％计含有C：0.02〜0.10％，Si：0.5％以下，Mn：0.5〜2.0％，Al：0.01〜0.1％，P：at 最多0.03％，S：0.005％以下，Ca：0.005％以下，N：0.007％以下，进一步含有选自Ti：0.008％以下，V：0.06以下的至少1种％，Nb：0.05％以下，余量为Fe和杂质。由式（1）定义的碳当量Ceq至少为0.38，Ti，V和Nb的含量满足式（2），并且含有Ti，V，Nb和Al中的至少一种的碳氮化物的尺寸在最大200nm，Ceq = C + Mn / 6 +（Cr + Mo + V）/ 5 +（Ni + Cu）/ 15（1）Ti + V + Nb <0.06（2）。

10. 发明申请

US20090078341A1 STEEL PIPE AS FUEL INJECTION PIPE 有权
标题翻译：钢管作为燃油喷射管
公开(公告)号：US20090078341A1
公开(公告)日：2009-03-26
申请号：US12244641
申请日：2008-10-02
申请人： KIKUO ASADA , Osamu Endo , Katsunori Nagao , Keisuke Hitoshio
发明人： KIKUO ASADA , Osamu Endo , Katsunori Nagao , Keisuke Hitoshio
IPC分类号： C22C38/00
CPC分类号： C22C38/02 , C21D8/10 , C21D9/08 , C21D9/14 , C21D2211/004 , C22C38/04 , F02M55/02 , F02M61/166 , F02M2200/03 , F02M2200/9053 , Y10S148/909
摘要： To provide a steel pipe as a fuel injection pipe with high material strength, high internal pressure limit free from fatigue failure, prolonged fatigue life, and high reliability. A steel pipe as a fuel injection pipe of 500 N/mm2 or higher tensile strength comprising, by mass, C: 0.12 to 0.27%, Si: 0.05 to 0.40%, and Mn: 0.8 to 2.0%, and the balance being Fe and impurities, the contents of Ca, P, and S in the impurities being Ca: 0.001% or less, P: 0.02% or less, and S: 0.01% or less, respectively, characterized in that the maximum diameter of nonmetallic inclusions present in at least in a region extending from the inner surface of the steel pipe to a depth of 20 μm is 20 μm or less. Further, this steel pipe may contain, in place of a portion of Fe, at least one selected from among Cr: 1% or less, Mo: 1% or less, Ti: 0.04% or less, Nb: 0.04% or less, and V: 0.1% or less.
摘要翻译：提供具有高材料强度的钢管作为燃料喷射管，没有疲劳破坏的高内压极限，延长的疲劳寿命和高可靠性。作为500N / mm 2以上的拉伸强度的燃料喷射管的钢管，以质量计C：0.12〜0.27％，Si：0.05〜0.40％，Mn：0.8〜2.0％，余量为Fe，杂质中Ca，P，S的含量分别为Ca：0.001％以下，P：0.02％以下，S：0.01％以下，其特征在于，非金属夹杂物的最大直径存在于至少在从钢管的内表面延伸到20μm的深度的区域中，为20μm以下。此外，该钢管可以含有选自Cr：1％以下，Mo：1％以下，Ti：0.04％以下，Nb：0.04％以下的至少一种，代替Fe的一部分， V：0.1％以下。

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