公开(公告)号：US20050013722A1

公开(公告)日：2005-01-20

申请号：US10496191

申请日：2002-11-15

申请人： Akira Usami ,  Shunji Sakamoto ,  Satoshi Nishima ,  Motohiro Okushima ,  Takashi Kusunoki

发明人： Akira Usami ,  Shunji Sakamoto ,  Satoshi Nishima ,  Motohiro Okushima ,  Takashi Kusunoki

IPC分类号： B23K9/23 ,  B23K35/30 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/60

CPC分类号： C22C38/02 ,  B23K35/3053 ,  C21D8/0205 ,  C21D8/0273 ,  C21D9/50 ,  C21D2211/005 ,  C22C38/004 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/60

摘要： The present invention provides a low alloy steel and a weld joint thereof excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance, said low alloy steel containing, in mass, C: 0.001 to 0.2%, Si: 0.01 to 2.5%, Mn: 0.1 to 2%, Cu: 0.1 to 1%, Mo: 0.001 to 1%, Sb: 0.01 to 0.2%, P: 0.05% or less, and S: 0.05% or less, with the balance consisting of Fe and unavoidable impurities; and the acid corrosion resistance index AI of said low alloy steel being zero or positive. Here, said AI is given by the following expression, AI/10,000=0.0005+0.045×Sb %−C %×Mo %, where % means mass %.

摘要翻译： 本发明提供了一种低合金钢及其耐盐酸腐蚀性和硫酸耐腐蚀性优良的焊接接头，所述低合金钢质量分数为：C：0.001〜0.2％，Si：0.01〜2.5％，Mn： 0.1〜2％，Cu：0.1〜1％，Mo：0.001〜1％，Sb：0.01〜0.2％，P：0.05％以下，S：0.05％以下，余量由Fe和不可避免的杂质 ; 所述低合金钢的耐酸腐蚀指数AI为零或正。 这里，所述AI由以下表达式给出：AI / 10,000 = 0.0005 + 0.045xSb％-C％xMo％，其中％表示质量％。

公开(公告)号：US07731896B2

公开(公告)日：2010-06-08

申请号：US10496191

申请日：2002-11-15

申请人： Akira Usami ,  Shunji Sakamoto ,  Satoshi Nishimura ,  Motohiro Okushima ,  Takashi Kusunoki

发明人： Akira Usami ,  Shunji Sakamoto ,  Satoshi Nishimura ,  Motohiro Okushima ,  Takashi Kusunoki

IPC分类号： C22C38/12 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/16

CPC分类号： C22C38/02 ,  B23K35/3053 ,  C21D8/0205 ,  C21D8/0273 ,  C21D9/50 ,  C21D2211/005 ,  C22C38/004 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/60

摘要： The present invention provides a low alloy steel and a weld joint thereof excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance, said low alloy steel containing, in mass, C: 0.001 to 0.2%, Si: 0.01 to 2.5%, Mn: 0.1 to 2%, Cu: 0.1 to 1%, Mo: 0.001 to 1%, Sb: 0.01 to 0.2%, P: 0.05% or less, and S: 0.05% or less, with the balance consisting of Fe and unavoidable impurities; and the acid corrosion resistance index AI of said low alloy steel being zero or positive. Here, said AI is given by the following expression, AI/10,000=0.0005+0.045×Sb %−C %×Mo %, where % means mass %.

摘要翻译： 本发明提供了一种低合金钢及其耐盐酸腐蚀性和硫酸耐腐蚀性优良的焊接接头，所述低合金钢质量分数为：C：0.001〜0.2％，Si：0.01〜2.5％，Mn： 0.1〜2％，Cu：0.1〜1％，Mo：0.001〜1％，Sb：0.01〜0.2％，P：0.05％以下，S：0.05％以下，余量由Fe和不可避免的杂质 ; 所述低合金钢的耐酸腐蚀指数AI为零或正。 这里，所述AI由以下表达式给出：AI / 10,000 = 0.0005 + 0.045×Sb％-C％×Mo％，其中％表示质量％。

公开(公告)号：US07718014B2

公开(公告)日：2010-05-18

申请号：US11732755

申请日：2007-04-03

申请人： Akira Usami ,  Shunji Sakamoto ,  Satoshi Nishimura ,  Motohiro Okushima ,  Takashi Kusunoki

发明人： Akira Usami ,  Shunji Sakamoto ,  Satoshi Nishimura ,  Motohiro Okushima ,  Takashi Kusunoki

IPC分类号： C22C38/02

CPC分类号： C22C38/02 ,  B23K35/3053 ,  C21D8/0205 ,  C21D8/0273 ,  C21D9/50 ,  C21D2211/005 ,  C22C38/004 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/60

摘要： The present invention provides a low alloy steel and a weld joint thereof excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance, said low alloy steel containing, in mass, C: 0.001 to 0.2%, Si: 0.01 to 2.5%, Mn: 0.1 to 2%, Cu: 0.1 to 1%, Mo: 0.001 to 1%, Sb: 0.01 to 0.2%, P: 0.05% or less, and S: 0.05% or less, with the balance consisting of Fe and unavoidable impurities; and the acid corrosion resistance index AI of said low alloy steel being zero or positive. Here, said AI is given by the following expression, AI/10,000=0.0005+0.045×Sb %−C %×Mo %, where % means mass %.

公开(公告)号：US20070269335A1

公开(公告)日：2007-11-22

申请号：US11732755

申请日：2007-04-03

申请人： Akira Usami ,  Shunji Sakamoto ,  Satoshi Nishimura ,  Motohiro Okushima ,  Takashi Kusunoki

发明人： Akira Usami ,  Shunji Sakamoto ,  Satoshi Nishimura ,  Motohiro Okushima ,  Takashi Kusunoki

IPC分类号： C22C38/16 ,  C22C38/60

CPC分类号： C22C38/02 ,  B23K35/3053 ,  C21D8/0205 ,  C21D8/0273 ,  C21D9/50 ,  C21D2211/005 ,  C22C38/004 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/60

摘要： The present invention provides a low alloy steel and a weld joint thereof excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance, said low alloy steel containing, in mass, C: 0.001 to 0.2%, Si: 0.01 to 2.5%, Mn: 0.1 to 2%, Cu: 0.1 to 1%, Mo: 0.001 to 1%, Sb: 0.01 to 0.2%, P: 0.05% or less, and S: 0.05% or less, with the balance consisting of Fe and unavoidable impurities; and the acid corrosion resistance index AI of said low alloy steel being zero or positive. Here, said AI is given by the following expression, AI/10,000=0.0005+0.045×Sb %−C %×Mo %, where % means mass %.

摘要翻译： 本发明提供了一种低合金钢及其耐盐酸腐蚀性和硫酸耐腐蚀性优良的焊接接头，所述低合金钢质量分数为：C：0.001〜0.2％，Si：0.01〜2.5％，Mn： 0.1〜2％，Cu：0.1〜1％，Mo：0.001〜1％，Sb：0.01〜0.2％，P：0.05％以下，S：0.05％以下，余量由Fe和不可避免的杂质 ; 所述低合金钢的耐酸腐蚀指数AI为零或正。 这里，所述AI由以下表达式给出：<？in-line-formula description =“In-line Formulas”end =“lead”？> AI / 10,000 = 0.0005 + 0.045xSb％-C％xMo％ in-line-formula description =“In-Line Formulas”end =“tail”？>其中％表示质量％。

公开(公告)号：US07967923B2

公开(公告)日：2011-06-28

申请号：US12989330

申请日：2009-10-01

申请人： Hitoshi Furuya ,  Naoki Saitoh ,  Motohiro Okushima ,  Yasunori Takahashi

发明人： Hitoshi Furuya ,  Naoki Saitoh ,  Motohiro Okushima ,  Yasunori Takahashi

IPC分类号： C22C38/44 ,  C22C38/46 ,  C21D8/02

CPC分类号： C22C38/02 ,  C21D8/0226 ,  C21D8/0263 ,  C21D9/50 ,  C21D2211/001 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46

摘要： The present invention provides a steel plate that exhibits excellent low-temperature toughness in a base material and a weld heat-affected zone and has small strength anisotropy, wherein the steel includes, by mass, C: 0.04%-0.10%; Si: 0.02%-0.40%; Mn: 0.5%-1.0%; P: 0.0010%-0.0100%; S: 0.0001%-0.0050%; Ni: 2.0%-4.5%; Cr: 0.1%-1.0%; Mo: 0.1%-0.6%; V: 0.005%-0.1%; Al: 0.01%-0.08%; and N: 0.0001%-0.0070%, with the balance including Fe and inevitable impurities, a Ni segregation ratio at a portion located at one-fourth of a thickness of the steel plate in a steel-plate thickness direction from a surface of the steel plate is 1.3 or lower, a degree of flatness of a prior austenite grain is in a range from 1.05 to 3.0, an effective diameter of crystal grain is 10 μm or lower, and a Vickers hardness number is in a range of 265 HV to 310 HV.

摘要翻译： 本发明提供一种在基材和焊接热影响区显示优异的低温韧性并且具有小的强度各向异性的钢板，其中所述钢质量为C：0.04％-0.10％; Si：0.02％-0.40％; Mn：0.5％-1.0％; P：0.0010％-0.0100％; S：0.0001％-0.0050％; Ni：2.0％〜4.5％ Cr：0.1％-1.0％; Mo：0.1％-0.6％; V：0.005％-0.1％; Al：0.01％-0.08％; 和N：0.0001％-0.0070％，余量包括Fe和不可避免的杂质，在钢板厚度方向上的钢板厚度的四分之一处的Ni偏析比从钢的表面 平板度为1.3以下，原奥氏体晶粒的平坦度为1.05〜3.0，晶粒的有效直径为10μm以下，维氏硬度为265HV〜310的范围 HV。

公开(公告)号：US20130098514A1

公开(公告)日：2013-04-25

申请号：US13806457

申请日：2011-07-07

申请人： Hitoshi Furuya ,  Naoki Saitoh ,  Motohiro Okushima ,  Yasunori Takahashi ,  Takehiro Inoue ,  Ryuji Uemori

发明人： Hitoshi Furuya ,  Naoki Saitoh ,  Motohiro Okushima ,  Yasunori Takahashi ,  Takehiro Inoue ,  Ryuji Uemori

IPC分类号： C22C38/44 ,  C22C38/00 ,  C22C38/40 ,  C21D8/02

CPC分类号： C22C38/44 ,  C21D6/001 ,  C21D6/04 ,  C21D8/0226 ,  C21D9/08 ,  C21D9/14 ,  C21D2211/001 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/40

摘要： A Ni-added steel plate contains, by mass %, C: 0.03% to 0.10%, Si: 0.02% to 0.40%, Mn: 0.3% to 1.2%, Ni: 5.0% to 7.5%, Cr: 0.4% to 1.5%, Mo: 0.02% to 0.4%, Al: 0.01% to 0.08%, T•O: 0.0001% to 0.0050%, P: limited to 0.0100% or less, S: limited to 0.0035% or less, and N: limited to 0.0070% or less with a remainder composed of Fe and inevitable impurities, in which a Ni segregation ratio at a position of ¼ of a plate thickness away from a plate surface in a thickness direction is 1.3 or less, a fraction of austenite after deep cooling is 2% or more, an austenite unevenness index after deep cooling is 5.0 or less, and an average equivalent circle diameter of austenite after deep cooling is 1 μm or less.

摘要翻译： 添加Ni的钢板以质量％计含有C：0.03〜0.10％，Si：0.02〜0.40％，Mn：0.3〜1.2％，Ni：5.0〜7.5％，Cr：0.4〜1.5 ％，Mo：0.02〜0.4％，Al：0.01〜0.08％，TO：0.0001〜0.0050％，P：0.0100％以下，S：0.0035％以下，N：限于0.0070 ％以下，剩余部分由Fe和不可避免的杂质组成，其厚度方向的板厚的1/4厚度的位置处的Ni偏析比为1.3以下，深冷后的奥氏体的比例为 2％以上，深冷后的奥氏体不均匀指数为5.0以下，深冷后的奥氏体的平均当量圆直径为1μm以下。

公开(公告)号：US20140158258A1

公开(公告)日：2014-06-12

申请号：US14234692

申请日：2011-09-28

申请人： Hitoshi Furuya ,  Naoki Saitoh ,  Motohiro Okushima ,  Yasunori Takahashi

发明人： Hitoshi Furuya ,  Naoki Saitoh ,  Motohiro Okushima ,  Yasunori Takahashi

IPC分类号： C22C38/40 ,  C22C38/16 ,  C22C38/14 ,  C22C38/00 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C21D8/02 ,  C22C38/12

CPC分类号： C22C38/40 ,  C21D6/001 ,  C21D6/04 ,  C21D7/13 ,  C21D8/02 ,  C21D8/0205 ,  C21D8/0263 ,  C21D9/50 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/54

摘要： A Ni-added steel plate includes, by mass %, C: 0.04% to 0.10%, Si: 0.02% to 0.12%, Mn: 0.3% to 1.0%, Ni: more than 7.5% to 10.0%, Al: 0.01% to 0.08%, T.O: 0.0001% to 0.0030%, P: limited to 0.0100% or less, S: limited to 0.0035% or less, N: limited to 0.0070% or less, and the balance consisting of Fe and unavoidable impurities, in which a Ni segregation ratio at an area of ¼ of a plate thickness away from a plate surface in a thickness direction is 1.3 or less, a fraction of austenite after a deep cooling is 0.5% or more, an austenite unevenness index after the deep cooling is 3.0 or less, and an average equivalent circle diameter of the austenite after the deep cooling is 1 μm or less.

摘要翻译： 添加镍的钢板以质量％计含有C：0.04％至0.10％，Si：0.02％至0.12％，Mn：0.3％至1.0％，Ni：大于7.5％至10.0％，Al：0.01％ 至0.08％，TO：0.0001％〜0.0030％，P：限制在0.0100％以下，S：限于0.0035％以下，N：限于0.0070％以下，余量由Fe和不可避免的杂质构成， 其厚度方向的平板厚度1/4的区域的Ni偏析比为1.3以下，深冷时的奥氏体的比例为0.5％以上，深冷后的奥氏体不均匀度 为3.0以下，深冷后的奥氏体的平均当量圆直径为1μm以下。

公开(公告)号：US20110036469A1

公开(公告)日：2011-02-17

申请号：US12989330

申请日：2009-10-01

申请人： Hitoshi Furuya ,  Naoki Saitoh ,  Motohiro Okushima ,  Yasunori Takahashi

发明人： Hitoshi Furuya ,  Naoki Saitoh ,  Motohiro Okushima ,  Yasunori Takahashi

IPC分类号： C21D8/02 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/00

CPC分类号： C22C38/02 ,  C21D8/0226 ,  C21D8/0263 ,  C21D9/50 ,  C21D2211/001 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46

摘要： The present invention provides a steel plate that exhibits excellent low-temperature toughness in a base material and a weld heat-affected zone and has small strength anisotropy, wherein the steel includes, by mass, C: 0.04%-0.10%; Si: 0.02%-0.40%; Mn: 0.5%-1.0%; P: 0.0010%-0.0100%; S: 0.0001%-0.0050%; Ni: 2.0%-4.5%; Cr: 0.1%-1.0%; Mo: 0.1%-0.6%; V: 0.005%-0.1%; Al: 0.01%-0.08%; and N: 0.0001%-0.0070%, with the balance including Fe and inevitable impurities, a Ni segregation ratio at a portion located at one-fourth of a thickness of the steel plate in a steel-plate thickness direction from a surface of the steel plate is 1.3 or lower, a degree of flatness of a prior austenite grain is in a range from 1.05 to 3.0, an effective diameter of crystal grain is 10 μm or lower, and a Vickers hardness number is in a range of 265 HV to 310 HV.

摘要翻译： 本发明提供一种在基材和焊接热影响区显示优异的低温韧性并且具有小的强度各向异性的钢板，其中所述钢质量为C：0.04％-0.10％; Si：0.02％-0.40％; Mn：0.5％-1.0％; P：0.0010％-0.0100％; S：0.0001％-0.0050％; Ni：2.0％〜4.5％ Cr：0.1％-1.0％; Mo：0.1％-0.6％; V：0.005％-0.1％; Al：0.01％-0.08％; 和N：0.0001％-0.0070％，余量包括Fe和不可避免的杂质，在钢板厚度方向上的钢板厚度的四分之一处的Ni偏析比从钢的表面 平板度为1.3以下，原奥氏体晶粒的平坦度为1.05〜3.0，晶粒的有效直径为10μm以下，维氏硬度为265HV〜310的范围 HV。

公开(公告)号：US09260771B2

公开(公告)日：2016-02-16

申请号：US14234692

申请日：2011-09-28

申请人： Hitoshi Furuya ,  Naoki Saitoh ,  Motohiro Okushima ,  Yasunori Takahashi

发明人： Hitoshi Furuya ,  Naoki Saitoh ,  Motohiro Okushima ,  Yasunori Takahashi

IPC分类号： C22C38/40 ,  C21D8/02 ,  C22C38/14 ,  C22C38/00 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/12 ,  C22C38/54 ,  C21D6/00 ,  C21D6/04 ,  C21D7/13 ,  C21D9/50 ,  C22C38/16

CPC分类号： C22C38/40 ,  C21D6/001 ,  C21D6/04 ,  C21D7/13 ,  C21D8/02 ,  C21D8/0205 ,  C21D8/0263 ,  C21D9/50 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/54

摘要： A Ni-added steel plate includes, by mass %, C: 0.04% to 0.10%, Si: 0.02% to 0.12%, Mn: 0.3% to 1.0%, Ni: more than 7.5% to 10.0%, Al: 0.01% to 0.08%, T.O: 0.0001% to 0.0030%, P: limited to 0.0100% or less, S: limited to 0.0035% or less, N: limited to 0.0070% or less, and the balance consisting of Fe and unavoidable impurities, in which a Ni segregation ratio at an area of ¼ of a plate thickness away from a plate surface in a thickness direction is 1.3 or less, a fraction of austenite after a deep cooling is 0.5% or more, an austenite unevenness index after the deep cooling is 3.0 or less, and an average equivalent circle diameter of the austenite after the deep cooling is 1 μm or less.

摘要翻译： 添加镍的钢板以质量％计含有C：0.04％至0.10％，Si：0.02％至0.12％，Mn：0.3％至1.0％，Ni：大于7.5％至10.0％，Al：0.01％ 至0.08％，TO：0.0001％〜0.0030％，P：限制在0.0100％以下，S：限于0.0035％以下，N：限于0.0070％以下，余量由Fe和不可避免的杂质构成， 其厚度方向的平板厚度1/4的区域的Ni偏析比为1.3以下，深冷时的奥氏体的比例为0.5％以上，深冷后的奥氏体不均匀度 为3.0以下，深冷后的奥氏体的平均当量圆直径为1μm以下。

公开(公告)号：US08882942B2

公开(公告)日：2014-11-11

申请号：US13806457

申请日：2011-07-07

申请人： Hitoshi Furuya ,  Naoki Saitoh ,  Motohiro Okushima ,  Yasunori Takahashi ,  Takehiro Inoue ,  Ryuji Uemori

发明人： Hitoshi Furuya ,  Naoki Saitoh ,  Motohiro Okushima ,  Yasunori Takahashi ,  Takehiro Inoue ,  Ryuji Uemori

IPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/16 ,  C22C38/14 ,  C22C38/44 ,  C21D8/02 ,  C22C38/06 ,  C21D9/14 ,  C22C38/00 ,  C22C38/40 ,  C21D6/00 ,  C21D6/04 ,  C22C38/12 ,  C21D9/08

CPC分类号： C22C38/44 ,  C21D6/001 ,  C21D6/04 ,  C21D8/0226 ,  C21D9/08 ,  C21D9/14 ,  C21D2211/001 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/40

摘要： A Ni-added steel plate contains, by mass %, C: 0.03% to 0.10%, Si: 0.02% to 0.40%, Mn: 0.3% to 1.2%, Ni: 5.0% to 7.5%, Cr: 0.4% to 1.5%, Mo: 0.02% to 0.4%, Al: 0.01% to 0.08%, T.O: 0.0001% to 0.0050%, P: limited to 0.0100% or less, S: limited to 0.0035% or less, and N: limited to 0.0070% or less with a remainder composed of Fe and inevitable impurities, in which a Ni segregation ratio at a position of ¼ of a plate thickness away from a plate surface in a thickness direction is 1.3 or less, a fraction of austenite after deep cooling is 2% or more, an austenite unevenness index after deep cooling is 5.0 or less, and an average equivalent circle diameter of austenite after deep cooling is 1 μm or less.

摘要翻译： 添加Ni的钢板以质量％计含有C：0.03〜0.10％，Si：0.02〜0.40％，Mn：0.3〜1.2％，Ni：5.0〜7.5％，Cr：0.4〜1.5 ％，Mo：0.02〜0.4％，Al：0.01〜0.08％，TO：0.0001〜0.0050％，P：0.0100％以下，S：0.0035％以下，N：限于0.0070 ％以下，剩余部分由Fe和不可避免的杂质组成，其厚度方向的板厚的1/4厚度的位置处的Ni偏析比为1.3以下，深冷后的奥氏体的比例为 2％以上，深冷后的奥氏体不均匀指数为5.0以下，深冷后的奥氏体的平均当量圆直径为1μm以下。