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    Fine grain surface layer steel part and method of production of same
    361.
    发明申请
    Fine grain surface layer steel part and method of production of same 有权
    细颗粒表层钢部件及其生产方法相同

    公开(公告)号：US20090095383A1

    公开(公告)日：2009-04-16

    申请号：US11990793

    申请日：2007-07-27

    Applicant: Shinya Teramoto ,  Hiromasa Takada

    Inventor： Shinya Teramoto ,  Hiromasa Takada

    IPC: C21D8/02 ,  C22C38/04

    CPC classification number: B21J5/00 ,  C21D7/13 ,  C21D8/0205 ,  C21D8/0231 ,  C21D8/0278 ,  C21D2201/03 ,  C21D2201/05 ,  C21D2211/003 ,  C21D2211/005 ,  C21D2211/009 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/60 ,  Y10S148/902

    Abstract: The present invention provides a fine grain surface layer steel part having a high proof strength ratio equal to or higher than that of conventional quenched and tempered materials, that is, a fine grain surface layer steel part containing, by mass %, C: 0.45% to 0.70%, Nb: 0.01% to 0.60%, Si: 0.10% to 1.50%, Mn: 0.40% to 2.0%, P: 0.10% or less, S: 0.001% to 0.15%, and N: 0.003% to 0.025% and having a balance of Fe and unavoidable impurities, where the surface layer and inside at all or part of the part have structures of different average particle sizes of ferrite crystal grains surrounded by high angle grain boundaries of a misorientation angle of 15 degrees or more and a method of production of that part comprising warm forging locations where strength is required to a predetermined shape at 1000° C. to 800° C. during which working so as to give an equivalent strain of 1.5 or more.

    Abstract translation: 本发明提供一种具有等于或高于常规淬火回火材料的高强度比的细晶粒表层钢部分，即以质量％计含有C：0.45％的细晶粒表层钢部分， 至0.70％，Nb：0.01％〜0.60％，Si：0.10％〜1.50％，Mn：0.40％〜2.0％，P：0.10％以下，S：0.001〜0.15％，N：0.003％〜0.025 ％，并且具有余量的Fe和不可避免的杂质，其中表面层和内部全部或部分具有由15度或更大的取向角度的高角度晶界包围的铁素体晶粒的平均粒径不同的结构 以及该工件的制造方法，其包括在1000℃至800℃下需要强度至预定形状的热锻造位置，在该温度下工作以产生1.5或更大的等效应变。

    Grain-Oriented Electrical Steel Sheet Extremely Excellent in Magnetic Properties and Method of Production of Same
    362.
    发明申请
    Grain-Oriented Electrical Steel Sheet Extremely Excellent in Magnetic Properties and Method of Production of Same 有权
    面向电磁钢板的磁性能极好，其制作方法

    公开(公告)号：US20090044881A1

    公开(公告)日：2009-02-19

    申请号：US11921369

    申请日：2006-05-19

    Applicant: Tomoji Kumano ,  Kenichi Murakami ,  Yoshiyuki Ushigami

    Inventor： Tomoji Kumano ,  Kenichi Murakami ,  Yoshiyuki Ushigami

    IPC: C21D8/00 ,  C22C38/02

    CPC classification number: H01F1/16 ,  C21D8/12 ,  C21D8/1205 ,  C21D8/1244 ,  C21D8/1261 ,  C21D8/1272 ,  C21D2201/05 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/16 ,  C22C38/60 ,  C23C8/02 ,  C23C8/80 ,  H01F1/14791

    Abstract: Reheating a grain-oriented electrical steel sheet slab comprising predetermined components to 1280° C. or more and a solid solution temperature of inhibitor substances or more, hot rolling, annealing, and cold rolling it, decarburization annealing it, nitriding it in a strip running state, coating an annealing separator, and finish annealing it during which making a precipitation ratio of N as AlN after hot rolling 20% or less, making a mean grain size of primary recrystallization 7 μm to less than 20 μm, and making a nitrogen increase ΔN in the nitridation within a range of Equation (1) and making nitrogen contents σN1 and σN2 (front and back, mass %) of a 20% thickness portion of one surface of the steel strip (sheet) within a range of Equation (2): 0.007−([N]−14/48×[Ti])≦ΔN≦[solAl]×14/27−([N]−14/48×[Ti])+0.0025  Equation (1) |σN1−σN2|/ΔN≦0.35  Equation (2)

    Abstract translation: 将包含预定成分的晶粒取向电工钢板坯加热至1280℃以上，抑制物质的固溶温度以上，热轧，退火，冷轧后，进行脱碳退火，将其在条带运行中氮化 状态，涂覆退火分离剂，并且在热轧后使NN作为AlN的析出比为20％以下进行最终退火，使一次再结晶的平均粒径为7μm〜小于20μm，并使氮增加 在等式（1）的范围内的氮化中的ΔN和在钢带（片材）的一个表面的20％厚度部分的氮含量σigmaN1和σN2（前后质量％）在等式（2）的范围内 ）：<？in-line-formula description =“In-line Formulas”end =“lead”？> 0.007 - （[N] -14 / 48x [Ti]）<= DeltaN <= [solAl] x14 / （[N] -14 / 48x [Ti]）+ 0.0025等式（1）<？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formul ae description =“In-line Formulas”end =“lead”？> | sigmaN1-sigmaN2 | / DeltaN <= 0.35等式（2）<？in-line-formula description =“In-line Formulas”end =“tail” ？>

    STEEL PIPE HAVING HIGH FORMABILITY AND METHOD FOR PRODUCING THE SAME
    365.
    发明申请
    STEEL PIPE HAVING HIGH FORMABILITY AND METHOD FOR PRODUCING THE SAME 失效
    具有高可塑性的钢管及其制造方法

    公开(公告)号：US20030131909A1

    公开(公告)日：2003-07-17

    申请号：US10049481

    申请日：2002-02-06

    Inventor： Naoki Yoshinaga ,  Nobuhiro Fujita ,  Manabu Takashi ,  Yasuhiro Shinohara ,  Tohru Yoshida ,  Natsuko Sugiura

    IPC: C22C038/00 ,  B21D026/02

    CPC classification number: C22C38/04 ,  C21D8/10 ,  C21D2201/00 ,  C21D2201/05 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/06 ,  Y10S148/909

    Abstract: The present invention provides a steel pipe excellent in formability during hydraulic forming and the like and a method to produce the same, and more specifically: a steel pipe excellent in formability having an r-value of 1.4 or larger in the axial direction of the steel pipe, and the property that the average of the ratios of the X-ray intensity in the orientation component group of null110null to null332null on the plane at the center of the steel pipe wall thickness to the random X-ray intensity is 3.5 or larger, and/or the ratio of the X-ray intensity in the orientation component of null110null on the plane at the center of the steel pipe wall thickness to the random X-ray intensity is 5.0 or larger; and a method to produce a steel pipe excellent in formability characterized by heating the steel pipe having the property that the ratio of the X-ray intensity in every one of the orientation components of null001null , null116null , null114null and null112null on the plane at the center of the mother pipe wall thickness to the random X-ray intensity is 3 or smaller to a temperature in the range from 650 to 1,200null C. and by applying working under a condition of a diameter reduction ratio of 30% or more and a wall thickness reduction ratio of 5 to 30%.

    Abstract translation: 本发明提供一种在液压成形等中成形性优异的钢管及其制造方法，更具体地说，在钢的轴向上具有r值为1.4以上的成形性优异的钢管 管子，以及在钢管壁厚度的中心的平面上{110} <110> <{115} <110>的取向成分组中的X射线强度的比率的平均值相对于 随机X射线强度为3.5以上，和/或在钢管壁厚中心的平面上{110} <110>的取向成分中的X射线强度与随机X射线 强度为5.0以上; 以及生产成型性优良的钢管的制造方法，其特征在于，加热具有{001} <110>，{116} <110>的各取向成分的X射线强度的比例的钢管， 在母管壁厚度中心的平面上的随机X射线强度的{114} <110>和{112} <110>为650以上1200℃以下的温度。 并且通过在直径减小率为30％以上，壁厚减少率为5〜30％的条件下进行加工。

    Steel pipe excellent in formability and method for producing thereof
    366.
    发明申请
    Steel pipe excellent in formability and method for producing thereof 失效
    成形性优良的钢管及其制造方法

    公开(公告)号：US20030116238A1

    公开(公告)日：2003-06-26

    申请号：US10220441

    申请日：2002-08-27

    Inventor： Nobuhiro Fujita ,  Naoki Yoshinaga ,  Manabu Takahashi ,  Hitoshi Asahi ,  Yasuhiro Shinohara ,  Yasushi Hasegawa

    IPC: C21D009/08

    CPC classification number: C21D8/10 ,  C21D2201/05 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  Y10S148/909

    Abstract: The present invention is a high strength steel pipe excellent in formability in hydroforming and similar forming methods, characterized by: containing, in mass, C of 0.0005 to 0.30%, Si of 0.001 to 2.0%, Mn of 0.01 to 3.0% and appropriate amounts of other elements if necessary, with the balance consisting of Fe and unavoidable impurities; and an average for the ratios of the X-ray strength in the orientation component group of null110null to null111null to random X-ray diffraction strength on a plane at the wall thickness center being 2.0 or more and/or a ratio of the X-ray strength in the orientation component of null110null to random X-ray diffraction strength on the plane at the wall thickness center being 3.0 or more.

    Abstract translation: 本发明是一种在液压成形方法和类似成形方法中成形性优异的高强度钢管，其特征在于：以质量计含有0.0005〜0.30％的Si，0.001〜2.0％的Si，0.01〜3.0％的Mn和适量的 的其他元素，如有必要，余量由Fe和不可避免的杂质组成; {110} <110> <111> <110>的取向成分组中的X射线强度与壁厚中心的平面上的随机X射线衍射强度的比率的平均值为2.0以上 和/或{110} <110>的取向成分中的X射线强度与壁厚中心的平面上的随机X射线衍射强度的比为3.0以上。

    Method for manufacturing thin Fe--Ni alloy sheet for shadow mask
    370.
    发明授权
    Method for manufacturing thin Fe--Ni alloy sheet for shadow mask 失效
    用于制造用于荫罩的薄Fe-Ni合金薄板的方法

    公开(公告)号：US5520755A

    公开(公告)日：1996-05-28

    申请号：US342109

    申请日：1994-11-18

    Applicant: Tadashi Inoue ,  Kiyoshi Tsuru ,  Tomoyoshi Okita ,  Michihito Hiasa

    Inventor： Tadashi Inoue ,  Kiyoshi Tsuru ,  Tomoyoshi Okita ,  Michihito Hiasa

    IPC: C21D8/02 ,  C22C38/08 ,  H01J9/14 ,  H01J29/07

    CPC classification number: H01J9/142 ,  C21D8/0205 ,  C22C38/08 ,  H01J29/07 ,  C21D2201/05 ,  C21D8/0236 ,  H01J2229/0733

    Abstract: A thin Fe--Ni alloy sheet for shadow mask consists essentially of Ni of 34 to 38 wt. %, Si of 0.05 wt. % or less, B of 0.0005 wt. % or less, O of 0.002 wt. % or less and N of 0.0015% or less, the balance being Fe and inevitable impurities; said alloy sheet after annealing before press-forming having 0.2% proof stress of 28.5 kgf/mm.sup.2 or less; and a degree of {211} plane on a surface of said alloy sheet being 16% or less. And further modified similar alloy sheets are also provided.Further, a method for producing a thin Fe--Ni alloy sheet for shadow mask comprises the steps of: (a) hot-rolling of a slab into a hot-rolled alloy strip; (b) hot-rolled sheet annealing of the hot-rolled strip at 910.degree. to 990.degree. C.; (c) cold-rolling of the annealed hot-rolled strip into a cold-rolled strip; (d) recrystallization annealing of the cold-rolled strip; (e) finish cold-rolling of the recrystallization annealed strip at a finish cold reduction ratio in response to austenite grain size D(D.mu.m) yielded by the recrystallization annealing, the finish cold reducration ratio(R) being within a region enclosed by a range of R of 16 to 75 and a range of D of 6.38D-133.9.ltoreq.R.ltoreq.6.38D-51.0 and (f) annealing of the finish cold-rolled strip on conditions of a temperature of 720.degree. to 790.degree. C., a time of 2 to 40 min. and T.gtoreq.-53.8 logt+806, where T(.degree.C.) is the temperature of the annealing. And further modified similar methods are also provided.

    Abstract translation: 用于荫罩的薄Fe-Ni合金板基本上由34至38重量％的Ni组成。 ％，Si为0.05wt。 ％以下，B为0.0005重量％ ％以下，O为0.002重量％ ％以下，N为0.0015％以下，余量为Fe和不可避免的杂质; 压制成形后的退火后的合金板的0.2％的屈服应力为28.5kgf / mm 2以下; 并且所述合金板的表面上的{211}面的程度为16％以下。 还提供了进一步改进的类似合金片材。 此外，用于制造用于荫罩的薄Fe-Ni合金薄板的方法包括以下步骤：（a）将板坯热轧成热轧合金带; （b）在910〜990℃的热轧带钢的热轧板退火。 （c）将退火的热轧带材冷轧成冷轧带材; （d）冷轧带材的再结晶退火; （e）根据再结晶退火产生的奥氏体晶粒尺寸D（D mu），精冷冷轧后的再结晶退火钢带进行冷轧，精冷还原率（R）在由 R的范围为16〜75，D范围为6.38D-133.9 / = - 53.8 logt + 806，其中T（℃）是退火的温度。 并提供了进一步修改的类似方法。

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