公开(公告)号：US20070289655A1

公开(公告)日：2007-12-20

申请号：US11797103

申请日：2007-05-01

申请人： Masahiko Hamada ,  Shuji Okaguchi ,  Yuichi Komizo

发明人： Masahiko Hamada ,  Shuji Okaguchi ,  Yuichi Komizo

IPC分类号： F16L9/02

CPC分类号： C22C38/44 ,  B23K35/3053 ,  B23K35/3066 ,  B23K35/3093 ,  B23K35/362 ,  C22C38/002 ,  C22C38/02 ,  C22C38/42 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58

摘要： A high-strength welded steel pipe having a pipe base metal with a tensile strength of at least 760 MPa and which prevents the occurrence of transverse cracks in weld metal without carrying out preheating or postheating has a seam weld having weld metal with a tensile strength of at least 780 MPa and an average grain diameter of prior austenite in the weld metal of an inner seam weld of at least 90 μm and at most 150 μm. The pipe base metal contains C: 0.02-0.12%, Si: 0.01-0.50%, Mn: 0.4-2.5%, P: at most 0.015%, S: at most 0.003%, Nb: 0.005-0.10%, Al: 0.005-0.06%, and optionally at least one of Cu, Ni, Cr, Mo, V, and B, and the inner seam weld metal contains C: 0.02-0.12%, Si: 0.05-0.50%, Mn: 0.4-2.5%, Cr, Mo, and Ni: 0.1-3.0% each, Ti: 0.005-0.050%, and Al: 0.005-0.050%.

摘要翻译： 一种具有抗拉强度至少为760MPa并且防止在焊接金属中发生横向裂纹而不进行预热或后加热的管状母材的高强度焊接钢管具有焊缝，其焊缝金属的拉伸强度为 至少780MPa，内焊缝的焊接金属中的前奥氏体的平均粒径至少为90μm，至多为150μm。 管底金属含有C：0.02〜0.12％，Si：0.01-0.50％，Mn：0.4〜2.5％，P：0.015％以下，S：0.003％以下，Nb：0.005〜0.10％，Al：0.005 -0.06％，以及Cu，Ni，Cr，Mo，V和B中的至少一种，内缝焊缝金属含有C：0.02〜0.12％，Si：0.05〜0.50％，Mn：0.4〜2.5％ ，Cr，Mo和Ni：各自为0.1〜3.0％，Ti：0.005〜0.050％，Al：0.005〜0.050％。

公开(公告)号：US20050274436A1

公开(公告)日：2005-12-15

申请号：US10411186

申请日：2003-04-11

申请人： Kunio Kondo ,  Takahiro Kushida ,  Yuichi Komizo ,  Masaaki Igarashi

发明人： Kunio Kondo ,  Takahiro Kushida ,  Yuichi Komizo ,  Masaaki Igarashi

IPC分类号： C21D8/00 ,  C21D8/02 ,  C22C38/00 ,  C22C38/18 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/54

CPC分类号： C22C38/44 ,  C21D8/005 ,  C21D8/0263 ,  C21D2211/008 ,  C22C38/42 ,  C22C38/46

摘要： A martensitic stainless steel having a C content of 0.01 to 0.1 mass %, a Cr content of 9 to 15 mass % and a N content of not more than 0.1 mass %, wherein the maximum length of the carbides in the steel is 10 to 200 nm in the direction of the minor axis, or wherein the ratio of the average Cr concentration [Cr] to the average Fe concentration [Fe] in carbides in the steel ([Cr]/[Fe]) is not more than 0.4, or wherein the content of M23C6 type carbides is not more than 1 volume %, the content of M3C type carbides is 0.01 to 1.5 volume % and the content of MN type or M2N type nitrides is not more than 0.3 volume % is provided. This stainless steel has a high toughness in spite of both a relatively more C content and a high strength, thereby providing a, wide applicability to pipe material for oil wells containing carbon dioxide and a small amount of hydrogen sulfide, in particular for oil wells having a much greater depth.

摘要翻译： C含量为0.01〜0.1质量％，Cr含量为9〜15质量％，N含量为0.1质量％以下的马氏体系不锈钢，其中，碳的最大长度为10〜200 或其中钢中的碳化物中的平均Cr浓度[Cr]与平均Fe浓度[Fe]的比例（[Cr] / [Fe]））不大于0.4，或者 其中M 23 C 6 C型碳化物的含量不超过1体积％，M 3 C型碳化物的含量为0.01〜 1.5体积％，并且MN型或M 2 N型氮化物的含量不大于0.3体积％。 该不锈钢虽然具有较高的C含量和较高的强度，但具有较高的韧性，从而为含有二氧化碳和少量硫化氢的油井的管道材料提供了广泛的应用，特别是对于具有 更深的深度

公开(公告)号：US5118028A

公开(公告)日：1992-06-02

申请号：US573721

申请日：1990-08-28

申请人： Kazuhiro Ogawa ,  Yuichi Komizo

发明人： Kazuhiro Ogawa ,  Yuichi Komizo

IPC分类号： B23K1/002 ,  B23K20/16 ,  B23K20/227 ,  B23K35/00 ,  B23K35/30 ,  H05K1/03

CPC分类号： B23K1/002 ,  B23K20/16 ,  B23K20/227 ,  B23K35/004 ,  B23K35/304 ,  B23K35/308 ,  H05K1/0373 ,  H05K1/034 ,  H05K2201/015 ,  H05K2201/0212

摘要： A diffusion bonding method for corrosion resistant materials comprises: disposing an insert material having a melting point of at most 1150 degrees C. and a thickness of 10-80 micrometers between the bonding interfaces of two members to be joined, the insert comprising, by weight %,Cr: 5-40%,one or more of Si: at most 8% and B: at most 4%, anda remainder of at least one of Fe and Ni and incidental impurities; and heating the bonding interfaces of the two members by high-frequency induction heating for at least 120 seconds at a temperature of 1150-1250 degrees C. in an atmosphere containing at most 200 ppm oxygen while applying a pressure of 0.5-2 kgf/mm.sup.2 to the bonding interfaces so as to melt the insert material.

公开(公告)号：US07662244B2

公开(公告)日：2010-02-16

申请号：US10443821

申请日：2003-05-23

申请人： Mitsuru Yoshizawa ,  Kunio Kondo ,  Masaaki Igarashi ,  Yuichi Komizo

发明人： Mitsuru Yoshizawa ,  Kunio Kondo ,  Masaaki Igarashi ,  Yuichi Komizo

IPC分类号： C22C38/18

CPC分类号： C22C38/02 ,  C21D1/19 ,  C21D1/84 ,  C21D6/002 ,  C21D2211/001 ,  C21D2211/008 ,  C22C38/002 ,  C22C38/04 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46

摘要： A martensitic stainless steel provided includes C: 0.01-0.1% and Cr: 9-15%, and the retained austenite phase has a thickness not more than 100 nm in such a manner that the X-ray integral intensities of 111γ and 110α satisfy the following formula (a): 0.005≦111γ/(111γ+110α)≦0.05  (a) Such a metal structure can be obtained by the following procedure: the steel is heated at a temperature of the Ac3 point or more, and then cooled from 800° C. to 400° C. at a cooling rate of not less than 0.08° C./sec and further cooled down to 150° C. at a cooling rate of not more than 1° C./sec. The martensitic stainless steel according to the present invention has a relatively high carbon content and a greater toughness in spite of a high mechanical strength, and further exhibits an excellent corrosion resistance, so that it is particularly effective as the material for constructing a deep oil well.

摘要翻译： 提供的马氏体不锈钢包括C：0.01-0.1％和Cr：9-15％，并且残留奥氏体相的厚度不大于100nm，使得111gamma和110alpha的X射线积分强度满足 下式（a）：0.005 <= 111gamma /（111gamma + 110alpha）这样的金属结构可以通过以下步骤获得：将钢在Ac 3点以上的温度下加热，然后从800℃冷却。 至400℃，冷却速度不低于0.08℃/秒，并以不超过1℃/秒的冷却速度进一步冷却至150℃。 本发明的马氏体系不锈钢虽然具有较高的机械强度，但具有较高的碳含量和较高的韧性，并且还具有优异的耐腐蚀性，因此作为构成深油井的材料特别有效 。

公开(公告)号：US07361236B2

公开(公告)日：2008-04-22

申请号：US10411186

申请日：2003-04-11

申请人： Kunio Kondo ,  Takahiro Kushida ,  Yuichi Komizo ,  Masaaki Igarashi

发明人： Kunio Kondo ,  Takahiro Kushida ,  Yuichi Komizo ,  Masaaki Igarashi

IPC分类号： C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50

CPC分类号： C22C38/44 ,  C21D8/005 ,  C21D8/0263 ,  C21D2211/008 ,  C22C38/42 ,  C22C38/46

摘要： A martensitic stainless steel having a C content of 0.01 to 0.1 mass %, a Cr content of 9 to 15 mass % and a N content of not more than 0.1 mass %, wherein the maximum length of the carbides in the steel is 10 to 200 nm in the direction of the minor axis, or wherein the ratio of the average Cr concentration [Cr] to the average Fe concentration [Fe] in carbides in the steel ([Cr]/[Fe]) is not more than 0.4, or wherein the content of M23C6 type carbides is not more than 1 volume %, the content of M3C type carbides is 0.01 to 1.5 volume % and the content of MN type or M2N type nitrides is not more than 0.3 volume % is provided. This stainless steel has a high toughness in spite of both a relatively more C content and a high strength, thereby providing a, wide applicability to pipe material for oil wells containing carbon dioxide and a small amount of hydrogen sulfide, in particular for oil wells having a much greater depth.

摘要翻译： C含量为0.01〜0.1质量％，Cr含量为9〜15质量％，N含量为0.1质量％以下的马氏体系不锈钢，其中，碳的最大长度为10〜200 或其中钢中的碳化物中的平均Cr浓度[Cr]与平均Fe浓度[Fe]的比例（[Cr] / [Fe]））不大于0.4，或者 其中M 23 C 6 C型碳化物的含量不超过1体积％，M 3 C型碳化物的含量为0.01〜 1.5体积％，并且MN型或M 2 N型氮化物的含量不大于0.3体积％。 该不锈钢虽然具有较高的C含量和较高的强度，但具有较高的韧性，从而为含有二氧化碳和少量硫化氢的油井的管道材料提供了广泛的应用，特别是对于具有 更深的深度

公开(公告)号：US6042782A

公开(公告)日：2000-03-28

申请号：US76884

申请日：1998-05-13

申请人： Yoshiaki Murata ,  Yuichi Komizo ,  Hiroyuki Hirata

发明人： Yoshiaki Murata ,  Yuichi Komizo ,  Hiroyuki Hirata

IPC分类号： B23K35/30 ,  C22C38/44

CPC分类号： B23K35/3086 ,  Y10T428/12924

摘要： A welding material for use in a consumable or non-consumable electrode welding of stainless steels, capable of forming a weld metal with excellent corrosion resistance and mechanical properties, being drawn into a welding wire easily. The welding material is a composite welding wire composed of a steel shell and a filler material enveloped by the said steel shell and not containing slag forming agent. The welding material, as a whole, has the chemical composition as follows (by weight %): Not more than 0.3% C, not more than 1.0% Si, not more than 1.5% Mn, not more than 0.04% P, not more than 0.01% S, not more than 0.5% Al, 8.0 to 10.0% Mo, 22.0 to 26.0% Cr, 2.0 to 5.0% Mo, 0.12 to 0.24% N, not more than 3.0% Co, not more than 5.0% W, not more than 2.0% Cu, not more than 1.5% V and the equivalent PREW of the welding material is not smaller than 42.0 and ferrite volume index Ph of the welding material is 0.12 to 0.25, in which PREW and Ph are defined by the following formula 1 and formula 2 respectively: ##EQU1##

摘要翻译： 用于能够形成具有优异的耐腐蚀性和机械性能的焊接金属的不锈钢的消耗性或非消耗性电极焊接的焊接材料容易地被吸入焊丝。 焊接材料是由钢壳和由所述钢壳包围而不含有熔渣形成剂的填充材料构成的复合焊丝。 焊接材料整体上具有以下化学组成（重量％）：不超过0.3％C，不大于1.0％Si，不大于1.5％Mn，不大于0.04％P，不超过 不超过0.01％S，不大于0.5％Al，8.0至10.0％Mo，22.0至26.0％Cr，2.0至5.0％Mo，0.12至0.24％N，不大于3.0％Co，不大于5.0％W， 不超过2.0％的Cu，不超过1.5％V，焊接材料的等效PREW不小于42.0，焊接材料的铁素体体积指数Ph为0.12至0.25，其中PREW和Ph由以下定义 公式+ E，crc 1 + EE和公式+ E，crc 2 + EE分别为：

公开(公告)号：US4839242A

公开(公告)日：1989-06-13

申请号：US17754

申请日：1987-02-24

申请人： Junichiro Murayama ,  Yuichi Komizo

发明人： Junichiro Murayama ,  Yuichi Komizo

IPC分类号： B23K35/00 ,  B32B15/01

CPC分类号： B32B15/013 ,  B23K35/005 ,  B23K35/004 ,  Y10T428/12806 ,  Y10T428/12937 ,  Y10T428/12972

摘要： A titanium-clad steel and a method for its manufacture are disclosed. The titanium-clad steel comprises a steel base metal, a nickel insert which is bonded to the steel base metal, a low-carbon ferrous metal insert which contains at most 0.01 weight % of carbon and which is bonded to the nickel insert, and cladding of a titanium-based metal which is bonded to the low-carbon ferrous metal insert. A manufacturing method therefor comprises preparing a 4-layer clad assembly comprising the above materials, sealing the outer seams of the clad assembly by shielded arc welding, performing degassing treatment on at least the confronting surfaces of the inserts, heating the clad assembly to a temperature of 500.degree.-1050.degree. C., and performing hot rolling. The resulting titanium-clad steel has a high bonding strength.

摘要翻译： 公开了一种钛包覆钢及其制造方法。 钛合金钢包括钢基体金属，与钢基体金属结合的镍插入件，含有至多0.01重量％的碳并且与镍插入物结合的低碳黑色金属插入物和包层 的钛基金属，其结合到低碳黑金属插入物上。 其制造方法包括制备包括上述材料的4层包层组件，通过屏蔽电弧焊密封包层组件的外接缝，至少在插入件的相对表面上进行脱气处理，将包层组件加热至温度 500〜-1050℃，进行热轧。 所得到的钛包覆钢具有高的接合强度。