公开(公告)号：US06706125B2

公开(公告)日：2004-03-16

申请号：US10018881

申请日：2002-05-06

申请人： Tatsumi Kimura ,  Yasushi Morikage ,  Keniti Amano ,  Takanori Okui ,  Keizou Taoka ,  Hironori Miura ,  Hiroyuki Ookubo ,  Fumimaru Kawabata

发明人： Tatsumi Kimura ,  Yasushi Morikage ,  Keniti Amano ,  Takanori Okui ,  Keizou Taoka ,  Hironori Miura ,  Hiroyuki Ookubo ,  Fumimaru Kawabata

IPC分类号： C22C3802

CPC分类号： B21B1/082 ,  C21D8/00 ,  C21D8/0226 ,  C21D9/44 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  Y10T403/32

摘要： When manufacturing a straight steel section having a joint 2 comprising a ball claw 21 and a curved claw 20 by hot-rolling a bloom vertically symmetrically to make a section blank having a flange 2A at a web 1 end (first step), vertically asymmetrically hot-rolling the section blank to adjust the size of the web and form the flange into a rough joint 2B including a projection 20A (second step), and subjecting the projection to hot bend rolling into a curved claw 20 (third step), wherein the bloom has a chemical composition comprising, in mass percentage, from 0.01 to 0.20% C, up to 0.8% Si, up to 1.8% Mn, up to 0.030% P, and up to 0.020% S; and therein the claw bending start temperature in the third step is a temperature of over Ar3 or up to Ar3-50° C., thereby achieving a depth of wrinkle flaws 10 present on the inner surface side of the curved claw of up to 0.5 mm.

摘要翻译： 当制造具有包括球形爪21和弯曲爪20的接头2的直钢部分时，通过垂直对称地对其进行热轧，以使具有在腹板1端部（第一步骤）的凸缘2A的部分坯料垂直不对称地热 将该区段坯料卷起以调整幅材的尺寸并将法兰形成为包括突起20A（第二台阶）的粗糙接头2B，并将突起热弯曲成弯曲的爪20（第三步骤），其中 其具有质量百分比为0.01〜0.20％，Si：0.8％，Mn：1.8％，P：0.030％，S：0.020％以下的化学组成。 其中，第三步骤中的爪弯曲开始温度为Ar 3以上或Ar 3〜50℃以下的温度，从而形成弯曲爪的内表面侧的皱纹10的深度高达0.5mm 。

公开(公告)号：US5743972A

公开(公告)日：1998-04-28

申请号：US697645

申请日：1996-08-27

申请人： Tatsumi Kimura ,  Kiyoshi Uchida ,  Fumimaru Kawabata ,  Keniti Amano ,  Takanori Okui

发明人： Tatsumi Kimura ,  Kiyoshi Uchida ,  Fumimaru Kawabata ,  Keniti Amano ,  Takanori Okui

IPC分类号： C21D8/00 ,  C21D8/02 ,  C22C38/12

CPC分类号： C21D8/0226 ,  C21D8/00 ,  C22C38/12 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/009

摘要： A heavy-wall steel having a flange thickness of about 40 mm or more and possessing excellent strength, toughness, weldability, and seismic resistance capable of being used for structure members such as columns and beams of high-rise buildings. The heavy-wall steel has a tensile strength of about 490-690 MPa, a yield ratio of about 80% or less, and Charpy absorbed energy at 0.degree. C. of about 27 J or more at the center in terms of thickness of the flange portion in each of the rolling direction, the direction perpendicular to the rolling direction, and the plate-thickness direction.

公开(公告)号：US5882447A

公开(公告)日：1999-03-16

申请号：US562

申请日：1997-12-30

申请人： Tatsumi Kimura ,  Kiyoshi Uchida ,  Fumimaru Kawabata ,  Keniti Amano ,  Takanori Okui

发明人： Tatsumi Kimura ,  Kiyoshi Uchida ,  Fumimaru Kawabata ,  Keniti Amano ,  Takanori Okui

IPC分类号： C21D8/00 ,  C21D8/02 ,  C22C38/12 ,  C21D7/13

CPC分类号： C21D8/0226 ,  C21D8/00 ,  C22C38/12 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/009

摘要： A heavy-wall steel having a flange thickness of about 40 mm or more and possessing excellent strength, toughness, weldability, and seismic resistance capable of being used for structure members such as columns and beams of high-rise buildings. The heavy-wall steel has a tensile strength of about 490-690 MPa, a yield ratio of about 80% or less, and Charpy absorbed energy at 0.degree. C. of about 27 J or more at the center in terms of thickness of the flange portion in each of the rolling direction, the direction perpendicular to the rolling direction, and the plate-thickness direction.

摘要翻译： 具有约40mm以上的凸缘厚度并且具有优异的强度，韧性，焊接性和抗震性的重壁钢，能够用于诸如高层建筑物的柱和梁的结构构件。 重壁钢的拉伸强度为约490-690MPa，屈服比为约80％以下，夏比在0℃下的吸收能为约27J以上，中心厚度为 在轧制方向，垂直于轧制方向的方向和板厚方向上的凸缘部分。

公开(公告)号：US06699338B2

公开(公告)日：2004-03-02

申请号：US10236907

申请日：2002-09-09

申请人： Tatsumi Kimura ,  Kazuhiko Shiotani ,  Fumimaru Kawabata ,  Keniti Amano

发明人： Tatsumi Kimura ,  Kazuhiko Shiotani ,  Fumimaru Kawabata ,  Keniti Amano

IPC分类号： C21D802

CPC分类号： C22C38/42 ,  C22C38/002 ,  C22C38/004 ,  C22C38/04 ,  C22C38/08 ,  C22C38/16 ,  C22C38/20 ,  C22C38/32 ,  C22C38/38 ,  C22C38/52 ,  C22C38/54

摘要： A steel material excellent in weathering resistance by defining the chemical ingredients in the steel each to a predetermined range and setting an ingredient parameter formula in accordance with the working circumstance thereby reducing the flow rust and, particularly, forming stable rust with good protective property even in a salty circumstance such as in coast districts is provided. Further, also considering the amount of A type inclusions and B type inclusions according to JIS G 0555, a steel material of excellent earthquake proofness and weathering proofness also including weld heat affect zone is provided.

摘要翻译： 通过将钢中的化学成分定义为规定范围，设定成为根据工作环境的成分参数公式的耐候性优异的钢材，由此减少流动锈，特别是即使在 提供海岸地区等咸况。 此外，还考虑到根据JIS G 0555的A型夹杂物和B型夹杂物的量，还提供了具有优异的抗震性和耐候性的钢材料，其也包括焊接热影响区域。

公开(公告)号：US6007644A

公开(公告)日：1999-12-28

申请号：US257185

申请日：1999-02-25

申请人： Akio Ohmori ,  Tatsumi Kimura ,  Fumimaru Kawabata ,  Keniti Amano

发明人： Akio Ohmori ,  Tatsumi Kimura ,  Fumimaru Kawabata ,  Keniti Amano

IPC分类号： C22C38/00 ,  C21D8/00 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  C22C38/58 ,  C21D7/13 ,  C22C38/06

CPC分类号： C21D8/00 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14

摘要： A high-strength heavy-wall H-shaped steel is excellent in Z-direction toughness at the flange thickness center. The heavy-wall H-shaped steel is comprised of by weight from about 0.05 to 0.18% C, up to about 0.60% Si, from about 1.00% to about 1.80% Mn, up to about 0.020% P, under 0.004% S, from 0.016% to 0.050% Al, from 0.04% to 0. 15% V, and from 0.0070% to 0.0200% N, and one or more of from about 0.02% to about 0.60% Cu, from about 0.02% to about 0.60% Ni, from about 0.02% to about 0.50% Cr, and from about 0.01% to about 0.20% Mo; and the balance being Fe and incidental impurities. Also, (V.times.N)/S.gtoreq.0.150; the Ti content is within a range satisfying 0.002.ltoreq.Ti.ltoreq.1.38.times.N-8.59.times.10.sup.-4 ; Ceq (=C+Si/24+Mn/6+Ni/40+Cr/5+Mo/4+V/14) is within a range of from about 0.36 wt % to about 0.45 wt %, and the yield strength is at least 325 MPa.

摘要翻译： 高强度重型H型钢在法兰厚度中心的Z方向韧性优异。 重壁H型钢的重量为约0.05至0.18％C，至多约0.60％Si，约1.00％至约1.80％Mn，至多约0.020％P，0.004％S， 从0.016％至0.050％的Al，0.04％至0.15％的V，以及0.0070％至0.0200％的N，以及一种或多种约0.02％至约0.60％的Cu，约0.02％至约0.60％ Ni，约0.02％至约0.50％的Cr和约0.01％至约0.20％的Mo; 余量为Fe和杂质。 另外，（VxN）/ S> / = 0.150; Ti含量在满足0.002

公开(公告)号：US06451134B1

公开(公告)日：2002-09-17

申请号：US09743991

申请日：2001-01-18

申请人： Tatsumi Kimura ,  Fumimaru Kawabata ,  Keniti Amano

发明人： Tatsumi Kimura ,  Fumimaru Kawabata ,  Keniti Amano

IPC分类号： C21D800

CPC分类号： B21B1/088 ,  B21B3/02 ,  C21D8/00 ,  C21D9/0068 ,  C22C38/004 ,  C22C38/04 ,  C22C38/08 ,  C22C38/16

摘要： The present invention relates to an H-shaped steel used as a building structure such as a column material or the like for highrise and super highrise building structures. In the bainite structure of extra-low-carbon steel, diffusive &agr;q is finely dispersed in &agr;B to ensure tensile strength at the 590-MPa level and significantly improve toughness in the direction of the flange thickness. Fine dispersion of &agr;q is achieved by controlling Mn and Cu in proper ranges. In other word, the present invention provides 590MPa class heavy gauge H-shaped steel with excellent as-rolled toughness in the direction of the flange thickness, containing 0.001 to 0.025 wt % of C, 0.6 wt % or less of Si, 0.4 to 1.6 wt % of Mn, 0.025 wt % or less of P, 0.010 wt % or less of S, 0.1 wt % or less of Al, 0.6 to 2.0 wt % of Cu, 0.25 to 2.0 wt % of Ni, 0.001 to 0.050 wt % of Ti, and 0.0002 to 0.0030 wt % of B, wherein Mn/Cu≦2.0 and 250≦117 Mn (wt %)+163 Cu (wt %)≦350 are satisfied.

摘要翻译： 本发明涉及一种用于高层和超高层建筑结构的诸如柱材料等的建筑结构的H型钢。 在超低碳钢的贝氏体结构中，扩散的αq细分散在αB中，以确保在590MPa级别的拉伸强度，并显着提高法兰厚度方向的韧性。 通过控制Mn和Cu在适当的范围内实现αq的精细分散。 换句话说，本发明提供了在法兰厚度方向上具有优异的轧制韧性的590MPa级的重型H型钢，其含有0.001〜0.025重量％的C，0.6重量％以下的Si，0.4〜1.6 的Mn，0.025重量％以下的P，0.010重量％以下的S，0.1重量％以下的Al，0.6〜2.0重量％的Cu，0.25〜2.0重量％的Ni，0.001〜0.050重量％ 的Ti和0.0002〜0.0030重量％的B，其中Mn / Cu <= 2.0和250 <= 117 Mn（重量％）+ 163 Cu（重量％）<= 350。

公开(公告)号：US06440235B1

公开(公告)日：2002-08-27

申请号：US09641346

申请日：2000-08-18

申请人： Tatsumi Kimura ,  Fumimaru Kawabata ,  Keniti Amano

发明人： Tatsumi Kimura ,  Fumimaru Kawabata ,  Keniti Amano

IPC分类号： C21D713

CPC分类号： C22C38/14 ,  C21D8/00 ,  C21D2211/002 ,  C22C38/04 ,  C22C38/12

摘要： Rolled H-shapes having high strength and high toughness, and which can be produced using cheaper alloy components than conventional products and which can be manufactured with a high productivity, are disclosed. A method for manufacturing the H-shapes is also disclosed. The rolled H-shapes include 0.03 to 0.1 wt. % of Nb and 0.005 to 0.04 wt. % of Ti. The method includes a rough universal rolling process in which an accumulated reduction at a rolling temperature of 950° C. or lower is 5% or larger, and reverse operation is conducted fast; and a finishing universal rolling, in which the rolling temperature is 750° C. or higher. Preferably, in the rough universal rolling, the accumulated reduction at a rolling temperature of 950° C. or lower is 50% or more.

摘要翻译： 公开了具有高强度和高韧性的轧制H形，并且可以使用比常规产品更便宜的合金成分制造并且可以以高生产率制造。 还公开了一种用于制造H形的方法。 轧制的H形包括0.03〜0.1重量％ Nb的含量为0.005〜0.04wt。 ％的Ti。 该方法包括粗轧万能轧制方法，其中在950℃或更低的轧制温度下的累积压下率为5％或更大，并且快速进行反向操作; 以及轧制温度为750℃以上的精轧万能轧制。 优选地，在粗通用轧制中，轧制温度为950℃以下的累积压下率为50％以上。

公开(公告)号：US06299710B1

公开(公告)日：2001-10-09

申请号：US09272572

申请日：1999-03-19

申请人： Noritsugu Itakura ,  Mitsuhiro Okatsu ,  Fumimaru Kawabata ,  Keniti Amano

发明人： Noritsugu Itakura ,  Mitsuhiro Okatsu ,  Fumimaru Kawabata ,  Keniti Amano

IPC分类号： C21D800

CPC分类号： C21D8/0226 ,  C21D8/0263 ,  C21D2211/002 ,  C22C38/04 ,  C22C38/12

摘要： A high-strength and high-toughness steel product having at least about 0.001% and less than about 0.030% by weight C, not more than about 0.60% by weight Si, from about 0.8% to 3.0% by weight Mn, from about 0.005 to 0.20% by weight Nb, from about 0.0003 to 0.0050% by weight B, and not more than about 0.005% by weight AL wherein at least 90% of the product has a bainite structure. A method of making this steel product is subject to less stringent production controls because of the nature of the composition.

摘要翻译： 具有至少约0.001％且小于约0.030％（重量）C，不超过约0.60％（重量）Si，约0.8％至3.0％（重量）的Mn，约0.005 至0.20重量％的Nb，约0.0003至0.0050重​​量％的B和不超过约0.005重量％的AL，其中至少90％的产物具有贝氏体组织。 由于组合物的性质，制造该钢产品的方法受到较不严格的生产控制。

公开(公告)号：US06344093B1

公开(公告)日：2002-02-05

申请号：US09566989

申请日：2000-05-09

申请人： Akio Ohmori ,  Fumimaru Kawabata ,  Keniti Amano

发明人： Akio Ohmori ,  Fumimaru Kawabata ,  Keniti Amano

IPC分类号： C22C3814

CPC分类号： C22C38/14 ,  C21D2211/004 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/04 ,  C22C38/12

摘要： A high tensile strength steel product for high heat input welding having excellent toughness in the heat-affected zone and having a tensile strength of at least 490 MPa contains, in terms of percent by weight, from about 0.05% to about 0.18% of C, 0.6% or less of Si, from about 0.80% to about 1.80% of Mn, 0.005% or less of Al, 0.030% or less of P, 0.004% or less of S, 0.005% or less of Nb, from about 0.04% to about 0.15% of V, from about 0.0050% to about 0.00150% of N, and from about 0.010% to about 0.050% of Ti, the ratio of the Ti content to the Al content, Ti/Al, satisfying 5.0 or more, and further contains at least one of from about 0.0010% to about 0.0100% of Ca and from about 0.0010% to about 0.0100% of REM, and the balance being Fe and incidental impurities. In the steel product, oxide inclusions containing, in terms of percent by weight, 20% to about 95% of a titanium oxide, 70% or less of Al2O3, 5% to about 50% in total of at least one of calcium oxide and a REM oxide, and 15% or less of MnO are dispersed.

摘要翻译： 用于高热输入焊接的高抗拉强度钢产品在热影响区具有优异的韧性并且拉伸强度至少为490MPa，以重量百分比计包含约0.05％至约0.18％的C， 0.6％以下的Si，约0.80％〜约1.80％的Mn，0.005％以下的Al，0.030％以下的P，0.004％以下的S，0.005％以下的Nb，约0.04％ 至约0.15％的V，约0.0050％至约0.00150％的N和约0.010％至约0.050％的Ti，Ti含量与Al含量的比例Ti / Al满足5.0以上， 并且还包含约0.0010％至约0.0100％的Ca和约0.0010％至约0.0100％的REM中的至少一种，余量为Fe和附带的杂质。 在钢产品中，氧化物夹杂物含有以重量百分比计，20％至约95％的氧化钛，70％或更少的Al 2 O 3，5％至约50％的总量中的至少一种氧化钙和 REM氧化物和15％以下的MnO分散。

公开(公告)号：US6068712A

公开(公告)日：2000-05-30

申请号：US225503

申请日：1999-01-06

申请人： Yasuyashi Yamane ,  Kazuhiko Shiotani ,  Fumimaru Kawabata ,  Toshiyuki Hoshino ,  Keniti Amano ,  Kimihiro Nishimura

发明人： Yasuyashi Yamane ,  Kazuhiko Shiotani ,  Fumimaru Kawabata ,  Toshiyuki Hoshino ,  Keniti Amano ,  Kimihiro Nishimura

IPC分类号： C23C8/14 ,  C23C8/18 ,  C23C8/80

CPC分类号： C23C8/14 ,  C23C8/18

摘要： The invention provides a steel product having superior weathering which is coated with a rust layer containing 50 or more weight % of non-crystalline rust, a method of producing the steel product, and a method of forming weathering protective rust on a material surface of the steel product. A material of a steel product is placed in an atmosphere in which the dew point is kept constant and the temperature of the steel product material is repeatedly varied between a temperature range of 5.degree. C. or more higher than the dew point and a temperature range of 5.degree. C. or more lower than the dew point. Weathering protective rust is thereby formed on the material surface of the steel product and a steel product having superior weathering is obtained. Preferably, the atmosphere contains 15 to 50 volume % of oxygen gas, and the temperature of the steel product is varied at a rising rate of 0.1 to 2.degree. C./minute and a lowering rate of 0.01 to 2.degree. C./minute. Alternatively, a desired steel product can also be obtained by placing a material of the steel product in an atmosphere containing 15 to 50 volume % of oxygen gas, keeping constant the dew point in the atmosphere, and keeping the temperature of the steel product material in the atmosphere at a certain value in a temperature range between a temperature 5.degree. C. lower than the dew point and a temperature 20.degree. C. lower than the dew point; or by placing a material of the steel product in an atmosphere containing 15 to 50 volume % of oxygen gas, and forming and keeping a water film with a thickness not more than 500 .mu.m but not less than 50 .mu.m on a material surface of the steel product.

摘要翻译： 本发明提供一种具有优良耐候性的钢制品，其涂有含有50重量％以上非结晶锈的锈层，该钢制品的制造方法以及在该材料表面上形成耐候性锈蚀的方法 钢制品。 将钢材的材料放置在露点保持恒定的气氛中，并且钢产品材料的温度在5℃以上的温度范围内反复变化，并且温度范围 比露点低5℃或更高。 由此，在钢材的材料表面形成耐候性保护锈，得到耐候性优异的钢制品。 优选气氛含有15〜50体积％的氧气，钢产品的温度以0.1〜2℃/分钟的升高速度变化，0.01〜2℃/分钟的降低速度。 或者，也可以通过将钢材的材料放置在含有15〜50体积％的氧气的气氛中，使大气中的露点保持恒定，并将钢材的温度保持在 在一定温度范围内的气氛在比露点低5℃的温度和比露点低20℃的温度范围内; 或通过将钢制品的材料放置在含有15〜50体积％的氧气的气氛中，在其材料表面上形成并保持厚度不大于500μm〜50μm的水膜 钢铁产品。