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1. 发明授权

US08157930B2 Martensitic stainless steel 有权
标题翻译：马氏体不锈钢
公开(公告)号：US08157930B2
公开(公告)日：2012-04-17
申请号：US10798855
申请日：2004-03-12
申请人： Hisashi Amaya , Kunio Kondo , Masakatsu Ueda , Keiichi Nakamura , Takahiro Kushida , Kazuyo Kushida, legal representative
发明人： Hisashi Amaya , Kunio Kondo , Masakatsu Ueda , Keiichi Nakamura , Takahiro Kushida
IPC分类号： C22C38/22 , C21D8/02
CPC分类号： C22C38/44 , C22C38/001 , C22C38/002 , C22C38/04 , C22C38/42
摘要： A martensitic stainless steel comprising C: 0.01-0.10%, Si: 0.05-1.0%, Mn: 0.05-1.5%, P: not more than 0.03%, S: not more than 0.01%, Cr: 9-15%, Ni: 0.1-4.5%, Al: not more than 0.05% and N: not more than 0.1% in mass %, and further comprising at least one of Cu: 0.05-5% and Mo: 0.05-5%, the residual being Fe and impurities, is provided, wherein the contents of Cu and Mo satisfy the following formula (a) or (b), 0.2%≦Mo+Cu/4≦5% (a) 0.55%≦Mo+Cu/4≦5% (b) and wherein the hardness is 30-45 in HRC and the carbide amount in grain boundaries of the prior austenite is not more than 0.5 volume %. The marensitic stainless steel has excellent properties regarding the sulfide stress cracking resistance, the resistance to corrosive wear and the localized corrosion.
摘要翻译：一种马氏体不锈钢，其包含C：0.01〜0.10％，Si：0.05〜1.0％，Mn：0.05〜1.5％，P：0.03％以下，S：0.01％以下，Cr：9〜15％，Ni ：0.1-4.5％，Al：0.05％以下，N：0.1质量％以下，进一步含有Cu：0.05〜5％和Mo：0.05〜5％中的至少一种，残留物为Fe 提供Cu和Mo的含量满足下式（a）或（b）：0.2％＆lt; NlE; Mo + Cu / 4＆nlE; 5％（a）0.55％＆nlE; Mo + Cu / 4＆ 5％（b），硬度在HRC中为30-45，前奥氏体的晶界中的碳化物量不大于0.5体积％。锰矿不锈钢具有耐硫化物应力开裂性，耐腐蚀性和局部腐蚀性等优异性能。

2. 发明申请

US20060174979A1 Martensitic stainless steel 有权
标题翻译：马氏体不锈钢
公开(公告)号：US20060174979A1
公开(公告)日：2006-08-10
申请号：US11335676
申请日：2006-01-20
申请人： Kunio Kondo , Hisashi Amaya
发明人： Kunio Kondo , Hisashi Amaya
IPC分类号： C22C38/22
CPC分类号： C22C38/42 , C22C38/02 , C22C38/04 , C22C38/44
摘要： A martensitic stainless steel having a resistance to sulfide stress corrosion cracking superior to Super 13 Cr steel and having a strength and corrosion resistance comparable to dual phase stainless steels has a chemical composition consisting essentially of, in mass %, C: 0.001-0.1%, Si: 0.05-1.0%, Mn: 0.05-2.0%, P: at most 0.025%, S: at most 0.010%, Cr: 11-18%, Ni: 1.5-10%, sol. Al: 0.001-0.1%, N: at most 0.1%, O: at most 0.01%, Cu: 0-5%, solid solution Mo: 3.5-7%, the composition satisfying the following Equation (1), optionally at least one element selected from at least one of the following Groups A-C, and a remainder of Fe and impurities and undissolved Mo, if undissolved Mo is present. Ni-bal.=30(C+N)+0.5(Mn+Cu)+Ni+8.2−1.1(Cr+Mo+1.5Si)≧−4.5 Equation (1) Group A—W: 0.2-5% Group B—V: 0.001-0.50%, Nb: 0.001-0.50%, Ti: 0.001-0.50%, and Zr: 0.001-0.50% Group C—Ca: 0.0005-0.05%, Mg: 0.0005-0.05%, REM: 0.0005-0.05%, and B: 0.0001-0.01%
摘要翻译：具有优于超级13Cr钢的具有耐硫化应力腐蚀开裂性且具有与双相不锈钢相当的强度和耐腐蚀性的马氏体不锈钢的化学成分基本上以质量％计含有C：0.001-0.1％ Si：0.05〜1.0％，Mn：0.05〜2.0％，P：0.025％以下，S：0.010％以下，Cr：11〜18％，Ni：1.5〜10％ Al：0.001-0.1％，N：0.1％以下，O：0.01％以下，Cu：0-5％，固溶Mo：3.5〜7％，满足下述式（1）的组成，选自以下组AC中的至少一个的元素，以及余量的Fe和杂质以及未溶解的Mo，如果不溶解的Mo存在。 Ni-bal = 30（C + N）+0.5（Mn + Cu）+ Ni + 8.2-1.1（Cr + Mo），在线式公式描述=“In-line formula”end =“lead” 组合AW：0.2-5％组BV：0.001-0.50％，Nb（0.51Si））= - 4.5方程式（1）<？in-line-formula description =“In-line Formulas”end =“tail” ：0.001-0.50％，Ti：0.001-0.50％，Zr：0.001-0.50％C-Ca：0.0005-0.05％，Mg：0.0005-0.05％，REM：0.0005-0.05％，B：0.0001-0.01 ％

3. 发明授权

US09090957B2 Martensitic stainless steel oil country tubular good 有权
标题翻译：马氏体不锈钢油管状管状好
公开(公告)号：US09090957B2
公开(公告)日：2015-07-28
申请号：US11792524
申请日：2004-12-07
申请人： Hisashi Amaya , Kunio Kondo , Masakatsu Ueda
发明人： Hisashi Amaya , Kunio Kondo , Masakatsu Ueda
IPC分类号： C22C38/18 , C22C38/00 , C21D8/10 , C21D9/08 , C22C38/02 , C22C38/20 , C22C38/22 , C22C38/38 , C22C38/58
CPC分类号： C22C38/00 , C21D8/10 , C21D8/105 , C21D9/08 , C21D2211/008 , C22C38/001 , C22C38/02 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/38 , C22C38/58
摘要： A martensitic stainless steel oil country tubular good contains, by mass, 0.005% to 0.1% C, 0.05% to 1% Si, 1.5% to 5% Mn, at most 0.05% P, at most 0.01% S, 9% to 13% Cr, at most 0.5% Ni, at most 2% Mo, at most 2% Cu, 0.001% to 0.1% Al, and 0.001% to 0.1% N, with the balance being Fe and impurities, and the pipe has a Cr-depleted region under the surface. The martensitic stainless steel oil country tubular good according to the present invention does not have a passive film on the surface and corrodes wholly at low speed. In addition, the Ni content is reduced, which allows uneven corrosion to be prevented. Therefore, SCC can be prevented from being generated in spite of the presence of a Cr-depleted region.
摘要翻译：马氏体不锈钢油管状良好的质量含有0.005〜0.1％的C，0.05〜1％的Si，1.5〜5％的Mn，至多0.05％的P，最多0.01％的S，9〜13 ％Cr，最多0.5％Ni，至多2％Mo，最多2％Cu，0.001％至0.1％Al和0.001％至0.1％N，余量为Fe和杂质，管道为Cr - 表面下方的剥离区域。根据本发明的马氏体不锈钢油管状管状体在表面上不具有钝化膜并且完全以低速腐蚀。另外，Ni含量降低，能够防止不均匀的腐蚀。因此，尽管存在Cr-贫化区域，也可以防止产生SCC。

4. 发明申请

US20060201587A1 Welded structure having improved resistance to stress corrosion cracking 有权
标题翻译：具有改善的耐应力腐蚀开裂性的焊接结构
公开(公告)号：US20060201587A1
公开(公告)日：2006-09-14
申请号：US11366442
申请日：2006-03-03
申请人： Hisashi Amaya , Kazuhiro Ogawa , Kunio Kondo , Masayuki Sagara , Hiroyuki Hirata
发明人： Hisashi Amaya , Kazuhiro Ogawa , Kunio Kondo , Masayuki Sagara , Hiroyuki Hirata
IPC分类号： C22C38/40
CPC分类号： B23K9/0286 , B23K9/16 , B23K9/23 , B23K35/3086 , B23K2101/10 , B23K2103/05 , C21D9/50 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/40 , C22C38/42 , C22C38/44 , Y10T428/12611 , Y10T428/12979 , Y10T428/13
摘要： This invention relates to a welded line pipe structure for transporting corrosive petroleum or natural gas. It is constituted by martensitic stainless steel pipes containing 8-16% Cr and at most 0.05% C. By suitably controlling the welding conditions at the time of girth welding of the steel pipes so as to ensure that the Cr concentration in grain boundary Cr-depleted portions existing immediately beneath a weld oxide scale is at least 5%, the occurrence of SCC in a high temperature CO2 environment can be prevented.
摘要翻译：本发明涉及一种输送腐蚀性石油或天然气的焊接管道结构。由含有8-16％Cr和最多0.05％C的马氏体不锈钢管构成。通过适当控制钢管的环形焊接时的焊接条件，以确保Cr界限Cr浓度Cr- 焊接氧化皮刻度正下方存在的贫化部分为至少5％，可以防止在高温CO 2环境中出现SCC。

5. 发明授权

US6159311A Martensitic stainless steel pipe and method for manufacturing the same 有权
标题翻译：马氏体不锈钢管及其制造方法
公开(公告)号：US6159311A
公开(公告)日：2000-12-12
申请号：US479233
申请日：2000-01-07
申请人： Hisashi Amaya , Masakatsu Ueda , Kunio Kondo
发明人： Hisashi Amaya , Masakatsu Ueda , Kunio Kondo
IPC分类号： C21D6/00 , C21D8/10 , C21D9/08 , C22C38/00 , C22C38/40 , C22C38/58 , C22C38/38 , C21D7/00 , C22C38/18
CPC分类号： C21D8/105 , C21D6/002 , C21D9/08 , C22C38/40 , C22C38/58 , Y10S148/909
摘要： A martensitic stainless steel pipe comprises, on the weight basis, C: 0.005 to 0.2%, Si: 1% or below, Mn: 0.1 to 5%, Cr: 7 to 15%, and Ni: 0 to 8%, wherein a wall thickness t (mm) and contents of C and Cr satisfy the relationship represented by the following equation (1).t(mm).ltoreq.exp{5.21-18.1C(%)-0.0407Cr(%)} (1)The steel pipe can be made by employing water quenching as a quenching method.
摘要翻译：马氏体系不锈钢管的重量为C：0.005〜0.2％，Si：1％以下，Mn：0.1〜5％，Cr：7〜15％，Ni：0〜8％壁厚t（mm），C和Cr的含量满足下述式（1）所示的关系。 t（mm）

6. 发明授权

US07767039B2 Martensitic stainless steel 有权
标题翻译：马氏体不锈钢
公开(公告)号：US07767039B2
公开(公告)日：2010-08-03
申请号：US11335676
申请日：2006-01-20
申请人： Kunio Kondo , Hisashi Amaya
发明人： Kunio Kondo , Hisashi Amaya
IPC分类号： C22C38/18
CPC分类号： C22C38/42 , C22C38/02 , C22C38/04 , C22C38/44
摘要： A martensitic stainless steel having a resistance to sulfide stress corrosion cracking superior to Super 13 Cr steel and having a strength and corrosion resistance comparable to dual phase stainless steels has a chemical composition consisting essentially of, in mass %, C: 0.001-0.1%, Si: 0.05-1.0%, Mn: 0.05-2.0%, P: at most 0.025%, S: at most 0.010%, Cr: 11-18%, Ni: 1.5-10%, sol. Al: 0.001-0.1%, N: at most 0.1%, O: at most 0.01%, Cu: 0-5%, solid solution Mo: 3.5-7%, the composition satisfying the following Equation (1), optionally at least one element selected from at least one of the following Groups A-C, and a remainder of Fe and impurities and undissolved Mo, if undissolved Mo is present. Ni-bal.=30(C+N)+0.5(Mn+Cu)+Ni+8.2−1.1(Cr+Mo+1.5Si)≧−4.5 Equation (1) Group A—W: 0.2-5% Group B—V: 0.001-0.50%, Nb: 0.001-0.50%, Ti: 0.001-0.50%, and Zr: 0.001-0.50% Group C—Ca: 0.0005-0.05%, Mg: 0.0005-0.05%, REM: 0.0005-0.05%, and B: 0.0001-0.01%.
摘要翻译：具有优于超级13Cr钢的具有耐硫化应力腐蚀开裂性且具有与双相不锈钢相当的强度和耐腐蚀性的马氏体不锈钢的化学成分基本上以质量％计含有C：0.001-0.1％ Si：0.05〜1.0％，Mn：0.05〜2.0％，P：0.025％以下，S：0.010％以下，Cr：11〜18％，Ni：1.5〜10％ Al：0.001-0.1％，N：0.1％以下，O：0.01％以下，Cu：0-5％，固溶Mo：3.5〜7％，满足下述式（1）的组成，选自以下组AC中的至少一个的元素，以及余量的Fe和杂质以及未溶解的Mo，如果不溶解的Mo存在。 Ni-bal = 30（C + N）+0.5（Mn + Cu）+ Ni + 8.2-1.1（Cr + Mo + 1.5Si）≥-4.5等式（1）组A-W：0.2-5％ -V：0.001-0.50％，Nb：0.001-0.50％，Ti：0.001-0.50％，Zr：0.001-0.50％C-Ca：0.0005-0.05％，Mg：0.0005-0.05％，REM： 0.05％，B：0.0001-0.01％。

7. 发明授权

US07238434B2 Welded structure having improved resistance to stress corrosion cracking 有权
标题翻译：具有改善的耐应力腐蚀开裂性的焊接结构
公开(公告)号：US07238434B2
公开(公告)日：2007-07-03
申请号：US11366442
申请日：2006-03-03
申请人： Hisashi Amaya , Kazuhiro Ogawa , Kunio Kondo , Masayuki Sagara , Hiroyuki Hirata
发明人： Hisashi Amaya , Kazuhiro Ogawa , Kunio Kondo , Masayuki Sagara , Hiroyuki Hirata
IPC分类号： B32B15/04 , B32B15/18 , C21D9/08 , F16L9/22
CPC分类号： B23K9/0286 , B23K9/16 , B23K9/23 , B23K35/3086 , B23K2101/10 , B23K2103/05 , C21D9/50 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/40 , C22C38/42 , C22C38/44 , Y10T428/12611 , Y10T428/12979 , Y10T428/13
摘要： This invention relates to a welded line pipe structure for transporting corrosive petroleum or natural gas. It is constituted by martensitic stainless steel pipes containing 8–16% Cr and at most 0.05% C. By suitably controlling the welding conditions at the time of girth welding of the steel pipes so as to ensure that the Cr concentration in grain boundary Cr-depleted portions existing immediately beneath a weld oxide scale is at least 5%, the occurrence of SCC in a high temperature CO2 environment can be prevented.
摘要翻译：本发明涉及一种输送腐蚀性石油或天然气的焊接管道结构。由含有8-16％Cr和最多0.05％C的马氏体不锈钢管构成。通过适当控制钢管的环形焊接时的焊接条件，以确保Cr界限Cr浓度Cr- 焊接氧化皮刻度正下方存在的贫化部分为至少5％，可以防止在高温CO 2环境中出现SCC。

8. 发明申请

US20050034790A1 Martensitic stainless steel 有权
标题翻译：马氏体不锈钢
公开(公告)号：US20050034790A1
公开(公告)日：2005-02-17
申请号：US10798855
申请日：2004-03-12
申请人： Hisashi Amaya , Kunio Kondo , Masakatsu Ueda , Keiichi Nakamura , Takahiro Kushida , Kazuyo Kushida
发明人： Hisashi Amaya , Kunio Kondo , Masakatsu Ueda , Keiichi Nakamura , Takahiro Kushida , Kazuyo Kushida
IPC分类号： C22C38/00 , C22C38/04 , C22C38/42 , C22C38/44 , C22C38/54 , C22C38/22
CPC分类号： C22C38/44 , C22C38/001 , C22C38/002 , C22C38/04 , C22C38/42
摘要： A martensitic stainless steel comprising C: 0.01-0.10%, Si: 0.05-1.0%, Mn: 0.05-1.5%, P: not more than 0.03%, S: not more than 0.01%, Cr: 9-15%, Ni: 0.1-4.5%, Al: not more than 0.05% and N: not more than 0.1% in mass %, and further comprising at least one of Cu: 0.05-5% and Mo: 0.05-5%, the residual being Fe and impurities, is provided, wherein the contents of Cu and Mo satisfy the following formula (a) or (b), 0.2%≦Mo+Cu/4≦5% (a) 0.55%≦Mo+Cu/4≦5% (b) and wherein the hardness is 30-45 in HRC and the carbide amount in grain boundaries of the prior austenite is not more than 0.5 volume %. The marensitic stainless steel has excellent properties regarding the sulfide stress cracking resistance, the resistance to corrosive wear and the localized corrosion.
摘要翻译：一种马氏体不锈钢，其包含C：0.01〜0.10％，Si：0.05〜1.0％，Mn：0.05〜1.5％，P：0.03％以下，S：0.01％以下，Cr：9〜15％，Ni ：0.1-4.5％，Al：0.05％以下，N：0.1质量％以下，进一步含有Cu：0.05〜5％和Mo：0.05〜5％中的至少一种，残留物为Fe 和杂质，其中Cu和Mo的含量满足下式（a）或（b），0.2％<= Mo + Cu / 4 <= 5％（a）0.55％<= Mo + Cu / 4 <= 5％（b），其中HRC中的硬度为30-45，并且原奥氏体的晶界中的碳化物量不大于0.5体积％。锰矿不锈钢具有耐硫化物应力开裂性，耐腐蚀性和局部腐蚀性等优异性能。

9. 发明授权

US09109268B2 Stainless steel for oil well, stainless steel pipe for oil well, and method of manufacturing stainless steel for oil well 有权
标题翻译：油井不锈钢，油井不锈钢管，油井不锈钢制造方法
公开(公告)号：US09109268B2
公开(公告)日：2015-08-18
申请号：US13276374
申请日：2011-10-19
申请人： Hideki Takabe , Kunio Kondo , Hisashi Amaya , Taro Ohe , Yohei Otome
发明人： Hideki Takabe , Kunio Kondo , Hisashi Amaya , Taro Ohe , Yohei Otome
IPC分类号： C22C38/42 , C21D8/02 , C21D8/10 , C21D9/08 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44 , F16L9/02
CPC分类号： C22C38/50 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/005 , C21D8/0205 , C21D8/105 , C21D9/08 , C21D9/085 , C21D2211/005 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , F16L9/02
摘要： The chemical composition of a stainless steel in accordance with the present invention consists of C: not more than 0.05%, Si: not more than 0.5%, Mn: 0.01 to 0.5%, P: not more than 0.04%, S: not more than 0.01%, Cr: more than 16.0 and not more than 18.0%, Ni: more than 4.0 and not more than 5.6%, Mo: 1.6 to 4.0%, Cu: 1.5 to 3.0%, Al: 0.001 to 0.10%, and N: not more than 0.050%, the balance being Fe and impurities, and satisfies Formulas (1) and (2). Also, the micro-structure thereof contains a martensitic phase and a ferritic phase having a volume ratio of 10 to 40%, and the ferritic phase distribution ratio is higher than 85%. Cr+Cu+Ni+Mo≧25.5 (1) −8≦30(C+N)+0.5Mn+Ni+Cu/2+8.2−1.1(Cr+Mo)≦−4 (2)
摘要翻译：根据本发明的不锈钢的化学组成由C：不大于0.05％，Si：不大于0.5％，Mn：0.01至0.5％，P：不大于0.04％，S：不大于 0.01％以上，Cr：16.0以上18.0％以下，Ni：4.0以上5.6％以下，Mo：1.6〜4.0％，Cu：1.5〜3.0％，Al：0.001〜0.10％ N：不大于0.050％，余量为Fe和杂质，并满足式（1）和（2）。此外，其微结构含有马氏体相和体积比为10〜40％的铁素体相，铁素体相分布比高于85％。 Cr + Cu + Ni +Mo≥25.5（1）-8＆nlE; 30（C + N）+ 0.5Mn + Ni + Cu / 2 + 8.2-1.1（Cr + Mo）＆nlE; -4（2）

10. 发明授权

US08608872B2 High-strength stainless steel pipe excellent in sulfide stress cracking resistance and high-temperature carbonic-acid gas corrosion resistance 有权
标题翻译：高强度不锈钢管具有优异的耐硫化应力开裂性和高温碳酸气体耐腐蚀性能
公开(公告)号：US08608872B2
公开(公告)日：2013-12-17
申请号：US13082432
申请日：2011-04-08
申请人： Kunio Kondo , Hisashi Amaya , Hideki Takabe , Taro Ohe
发明人： Kunio Kondo , Hisashi Amaya , Hideki Takabe , Taro Ohe
IPC分类号： C22C38/42 , C22C38/44
CPC分类号： C22C38/42 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44
摘要： The problem to be solved is the provision of a high-strength stainless steel pipe having a sufficient corrosion resistance in a high-temperature carbonic acid gas environment and having an excellent sulfide stress cracking resistance at normal temperature. A high-strength stainless steel pipe consist of, by mass %, C: 0.05% or less, Si: 1.0% or less, P: 0.05% or less, S: less than 0.002%, Cr: more than 16% and 18% or less, Mo: more than 2% and 3% or less, Cu: 1% to 3.5%, Ni: 3% or more and less than 5%, Al: 0.001% to 0.1% and O: 0.01% or less, Mn: 1% or less and N: 0.05% or less, and Mn and N in the above ranges satisfy formula (1), and the balance being Fe and impurities; and the metal micro-structure of the stainless steel pipe mainly includes a martensitic phase and comprises 10 to 40% of a ferritic phase by volume fraction and 10% or less of a retained γ-phase by volume fraction. [Mn]×([N]−0.0045)≦0.001 (1) wherein the symbols of elements in formula (1) respectively represent the contents (unit: mass %) of the elements in the steel.
摘要翻译：要解决的问题是在高温碳酸气体环境中提供具有足够耐腐蚀性的高强度不锈钢管，并且在常温下具有优异的耐硫化物应力开裂性。高强度不锈钢管以质量％计含有C：0.05％以下，Si：1.0％以下，P：0.05％以下，S：小于0.002％，Cr：16％以上18以下％以下，Mo：大于2％，3％以下，Cu：1〜3.5％，Ni：3％以上且小于5％，Al：0.001〜0.1％，O：0.01％以下，Mn：1％以下，N：0.05％以下，上述范围的Mn和N满足式（1），余量为Fe和杂质; 并且不锈钢管的金属微结构主要包括马氏体相，并且包含10〜40体积％的铁素体相和10体积％以下的γ相。 [Mn]×（[N] -0.0045）@ 0.001（1）其中，式（1）中的元素的符号分别表示钢中元素的含量（单位：质量％）。

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