公开(公告)号：US07507307B2

公开(公告)日：2009-03-24

申请号：US10485229

申请日：2003-06-06

申请人： Kohei Hasegawa ,  Nobuyuki Nakamura ,  Toshiaki Urabe

发明人： Kohei Hasegawa ,  Nobuyuki Nakamura ,  Toshiaki Urabe

IPC分类号： C21D8/02

CPC分类号： C22C38/02 ,  C21D1/19 ,  C21D8/0236 ,  C21D8/0273 ,  C21D9/52 ,  C22C38/04

摘要： The present invention provides a method for manufacturing an ultra high strength cold-rolled steel sheet, comprising the step of continuously annealing a cold-rolled steel sheet consisting essentially of, in terms of weight percentages, 0.07 to 0.15% C, 0.7 to 2% Si, 1.8 to 3% Mn, 0.02% or less P, 0.01% or less S, 0.01 to 0.1% Sol. Al, 0.005% or less N, 0.0003 to 0.003% B, and the balance being Fe, in which such continuous annealing comprises the steps of: heating the cold-rolled steel sheet at from 800° C. to 870° C. for 10 seconds or more; slowly cooling the heated steel sheet down to from 650° C. to 750° C.; rapidly cooling the slowly cooled steel sheet down to 100° C. or less at a cooling speed of over 500° C./sec; reheating the rapidly cooled steel sheet at from 325° C. to 425° C. for from 5 minutes to 20 minutes; cooling the reheated steel sheet down to room temperature; and coiling the cooled steel sheet. According to the invention, the ultra high strength cold-rolled steel sheet, for use in a structural member of automobile, which has a tensile strength of 980 MPa or more and is excellent in stretch-flangeability, ductility, and spot-weldability can be obtained.

摘要翻译： 本发明提供一种超高强度冷轧钢板的制造方法，其特征在于，包括下述工序：对冷轧钢板进行连续退火，所述冷轧钢板主要由以重量％计，0.07〜0.15％，0.7〜2％ Si，1.8〜3％Mn，0.02％以下P，0.01％以下S，0.01〜0.1％Sol。 Al，0.005％以下的N，0.0003〜0.003％的B，余量为Fe，其中这种连续退火包括以下步骤：将冷轧钢板从800℃加热至870℃10 秒或以上; 将加热的钢板缓慢冷却至650℃至750℃; 在500℃/秒的冷却速度下将缓慢冷却的钢板快速冷却至100℃或更低。 将快速冷却的钢板从325℃加热至425℃5分钟至20分钟; 将再热钢板冷却至室温; 并卷取冷却后的钢板。 根据本发明，用于汽车结构部件的拉伸强度为980MPa以上且拉伸凸缘性，延展性，点焊性优异的超高强度冷轧钢板可以是 获得。

公开(公告)号：US20050121119A1

公开(公告)日：2005-06-09

申请号：US10505575

申请日：2003-02-28

申请人： Kohei Hasegawa ,  Takeshi Fujita ,  Toshiaki Urabe

发明人： Kohei Hasegawa ,  Takeshi Fujita ,  Toshiaki Urabe

IPC分类号： C21D9/46 ,  C21D8/02 ,  C21D8/04 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/38

CPC分类号： C22C38/06 ,  C21D9/46 ,  C22C38/04 ,  C22C38/14

摘要： The present invention provides a steel sheet for heat treatment consisting essentially of, by mass %, 0.05-0.09% C, below 1% Si, 1.6-2.4% Mn, 0.02% P or less, 0.02% S or less, 0.01-0.1% sol. Al, 0.005% N or less, 0.0003-0.003% B, Ti in a range satisfying (48/32)S+(48/14)N≦Ti≦2[(48/32)S+(48/14)N], and the rest of Fe, wherein the average diameter of iron carbides precipitating in steel is 2 μm or smaller. The steel sheet for heat treatment according to the present invention has high strength and excellent hydrogen embrittlement resistance after being press formed and quenched, so that the steel sheet is well suited for automobile construction members.

摘要翻译： 本发明提供一种热处理钢板，其基本上以质量％计含有0.05％-0.09％的C，低于1％的Si，1.6-2.4％的Mn，0.02％的P以下，0.02％以下的锡，0.01-0.1 ％溶胶 Al，0.005％N以下，0.0003〜0.003％B，满足（48/32）S +（48/14）N≤Ti≤2[（48/32）S +（48/14）N ]，其余的Fe，其中在钢中沉淀的碳化铁的平均直径为2μm或更小。 根据本发明的热处理钢板在压制成形和淬火后具有高强度和优异的耐氢脆性，使得钢板非常适合于汽车构造构件。

公开(公告)号：US06695933B2

公开(公告)日：2004-02-24

申请号：US10108749

申请日：2002-03-28

申请人： Kohei Hasegawa ,  Toshiaki Urabe ,  Akihide Yoshitake ,  Hideyuki Tsurumaru

发明人： Kohei Hasegawa ,  Toshiaki Urabe ,  Akihide Yoshitake ,  Hideyuki Tsurumaru

IPC分类号： C21D802

CPC分类号： C22C38/06 ,  C21D1/19 ,  C21D8/0273 ,  C21D9/52 ,  C21D2211/008 ,  C22C38/38

摘要： An ultra-high strength cold rolled steel sheet having a tensile strength of 880 to 1170 MPa, that consists essentially of 0.01 to 0.07% C, 0.3% or less Si, 0.1% or less P, 0.01% or less S, 0.01 to 0.1% sol.Al, 0.0050% or less N, 1.6 to 2.5% of the sum of at least one element selected from the group consisting of Mn, Cr, and Mo, by mass, and a balance of Fe, and that has an inner zone deeper than 10 &mgr;m from the surface of the steel sheet being substantially a martensitic single phase structure. Since the steel sheet has a hole expansion ratio of 75% or more, specified by the Standard of Japan Iron and Steel Federation, JFST1001-1996, the steel sheet has a tensile strength in a range of from 880 to 1170 MPa, and an excellent mechanically joining property, and is suitable for fabricating automobile seat frames.

摘要翻译： 一种抗拉强度为880〜1170MPa的超高强度冷轧钢板，其基本上由0.01〜0.07％的C，0.3％以下的Si，0.1％以下的P，0.01％以下的S，0.01〜0.1 ％sol.Al，0.0050％以下N，选自Mn，Cr和Mo中的至少一种元素的总和的1.6〜2.5％，余量为Fe，并且具有内部 距离钢板表面大于10um的区域基本上是马氏体单相结构。 由于钢板具有75％以上的孔膨胀率，由日本钢铁联合会的标准JFST1001-1996规定，钢板的拉伸强度在880〜1170MPa的范围内，优异的 机械接合性能，适用于制造汽车座椅框架。

公开(公告)号：US09914988B2

公开(公告)日：2018-03-13

申请号：US13980981

申请日：2011-11-30

申请人： Katsutoshi Takashima ,  Yuki Toji ,  Kohei Hasegawa

发明人： Katsutoshi Takashima ,  Yuki Toji ,  Kohei Hasegawa

IPC分类号： C22C38/04 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/12 ,  C22C38/08 ,  C22C38/14 ,  C22C38/16 ,  C22C38/26

CPC分类号： C21D8/0263 ,  C21D8/0226 ,  C21D8/0236 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/26

摘要： Provided are a high-strength cold-rolled steel sheet having excellent formability, excellent ductility, excellent hole expansibility, and high yield ratio and a method for producing the same. The high-strength cold-rolled steel sheet contains 0.05% to 0.15% C, 0.10% to 0.90% Si, 1.0% to 2.0% Mn, 0.005% to 0.05% P, 0.0050% or less S, 0.01% to 0.10% Al, 0.0050% or less N, and 0.010% to 0.100% Nb, which are chemical components, on a mass basis, the balance being Fe and unavoidable impurities; has a microstructure which is a multi-phase structure containing 90% or more of a ferrite phase and 0.5% to less than 5.0% of a martensite phase on a volume fraction basis, the remainder being low-temperature transformation phases; and has a yield ratio of 70% or more.

公开(公告)号：US20130087257A1

公开(公告)日：2013-04-11

申请号：US13805144

申请日：2011-06-24

申请人： Masataka Yoshino ,  Kohei Hasegawa

发明人： Masataka Yoshino ,  Kohei Hasegawa

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

CPC分类号： C21D8/005 ,  C21D6/00 ,  C21D8/00 ,  C21D8/0436 ,  C21D8/0447 ,  C21D9/46 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14

摘要： An ultra.-high-strength cold-rolled steel sheet with excellent ductility and delayed fracture resistance includes 0.15% to 0.75 C. 1.0% to 3.0% Si, 1.5% to 2.5% Mn, 0.05% or less P, 0.02% or less 5, 0.01% to 0.05% Al, and less than 0.005% N on a mass ratio, the remainder being Fe and =avoidable impurities, the ultra-high-strength cold-rolled steel sheet having a metal microstructure including 40% to 85% of a tempered martensite phase and 15% to 60% of a ferrite phase on a volume fraction basis and a tensile strength of 1320 Mtn or more.

摘要翻译： 具有优异的延展性和耐延迟断裂性的超高强度冷轧钢板包括0.15％〜0.75％的Si，1.0〜3.0％的Si，1.5〜2.5％的Mn，0.05％以下的P，0.02％以下 5％，0.01％〜0.05％的Al和小于0.005％的N，其余为Fe和=可避免的杂质，具有金属组织的超高强度冷轧钢板包括40％〜85％ 的回火马氏体相和15〜60％的铁素体相，体积分数为1320Mnn以上。

公开(公告)号：US20120186707A1

公开(公告)日：2012-07-26

申请号：US13387761

申请日：2010-07-27

申请人： Junichiro Hirasawa ,  Naoto Yoshimi ,  Hiroki Nakamaru ,  Kohei Hasegawa ,  Hideyuki Tsurumaru ,  Keita Yonetsu ,  Hideyuki Takahashi ,  Masato Sasaki

发明人： Junichiro Hirasawa ,  Naoto Yoshimi ,  Hiroki Nakamaru ,  Kohei Hasegawa ,  Hideyuki Tsurumaru ,  Keita Yonetsu ,  Hideyuki Takahashi ,  Masato Sasaki

IPC分类号： C21D6/00 ,  C21D1/52 ,  C21D1/84 ,  C21D1/26

CPC分类号： C21D8/0236 ,  C21D1/74 ,  C21D6/008 ,  C21D8/0273 ,  C21D8/0457 ,  C21D9/46 ,  C21D9/48 ,  C21D9/561 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

摘要： A method for the manufacturing of high strength cold rolled steel sheets includes continuously annealing a cold rolled steel sheet that has a composition containing C: 0.05-0.3% mass, Si: 0.6-3.0% mass, Mn: 1.0-3.0% mass, P: 0.1% mass, S: ≦0.02% mass, Al: 0.01-1% mass, N: ≦0.01% mass, and Fe and inevitable impurities: balance, in a manner such that the cold rolled steel sheet is heated in a furnace using an oxidizing burner to a steel sheet temperature of ≧700° C., then soak-annealed in a reducing atmosphere furnace at 750-900° C., then cooled so the average cooling rate between 500° C. and 100° C. is ≧50° C./s. High-Si cold rolled steel sheets with high strength and good phosphatability while containing Si≧0.6% are obtained without controlling conditions so as to increase the dew point in the reducing atmosphere in the soaking furnace or to increase the vapor hydrogen partial pressure ratio.

摘要翻译： 高强度冷轧钢板的制造方法包括连续地退火具有C：0.05〜0.3质量％，Si：0.6〜3.0质量％，Mn：1.0〜3.0质量％的组成的冷轧钢板，P ：0.1质量％，S：＆lt; nlE; 0.02质量％，Al：0.01〜1质量％，N：＆lt; lE; 0.01质量％，Fe和不可避免的杂质：平衡，使得冷轧钢板被加热 使用氧化燃烧器将钢板温度设定为≥700℃，然后在还原气氛炉中在750〜900℃下进行浸泡退火，然后冷却至500℃〜100℃的平均冷却速度 C.≧50℃/ s。 在不控制条件的情况下获得具有高强度和高磷酸化性的高Si冷轧钢板，以增加均热炉中的还原气氛中的露点或提高蒸气氢分压比。

公开(公告)号：US20100132849A1

公开(公告)日：2010-06-03

申请号：US12595555

申请日：2008-04-07

申请人： Shusaku Takagi ,  Hidetaka Kawabe ,  Kohei Hasegawa ,  Toshihiko Ooi ,  Yasuaki Okita ,  Michitaka Sakurai

发明人： Shusaku Takagi ,  Hidetaka Kawabe ,  Kohei Hasegawa ,  Toshihiko Ooi ,  Yasuaki Okita ,  Michitaka Sakurai

IPC分类号： C23C2/28 ,  C22C38/00 ,  C22C38/32 ,  C22C38/22 ,  C22C38/38

CPC分类号： C23C2/06 ,  C21D6/005 ,  C21D8/0426 ,  C21D8/0473 ,  C21D8/0478 ,  C21D9/46 ,  C21D9/48 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C23C2/02 ,  C23C2/28 ,  Y10T428/12799

摘要： A high tensile-strength galvanized steel sheet includes C: at least 0.05% but less than 0.12%, Si: at least 0.01% but less than 0.35%, Mn: 2.0% to 3.5%, P: 0.001% to 0.020%, S: 0.0001% to 0.0030%, Al: 0.005% to 0.1%, N: 0.0001% to 0.0060%, Cr: more than 0.5% but not more than 2.0%, Mo: 0.01% to 0.50%, Ti: 0.010% to 0.080%, Nb: 0.010% to 0.080%, and B: 0.0001% to 0.0030%, the remainder being Fe and unavoidable impurities, wherein the high tensile-strength galvanized steel sheet has a microstructure that contains 20% to 70% by volume ferrite having an average grain size of 5 μm or less. The high tensile-strength galvanized steel sheet has a tensile strength of at least 980 MPa, and excellent formability and weldability.

摘要翻译： 高强度镀锌钢板包括C：0.05％以上且0.12％以下，Si：0.01％以上且0.35％以下，Mn：2.0％〜3.5％，P：0.001％以上0.020％以下，S： ：0.0001〜0.0030％，Al：0.005〜0.1％，N：0.0001〜0.0060％，Cr：0.5以上且2.0％以下，Mo：0.01〜0.50％，Ti：0.010〜0.080 ％，Nb：0.010％〜0.080％，B：0.0001〜0.0030％，余量为Fe和不可避免的杂质，其中，高强度镀锌钢板具有含有20〜70体积％ 平均粒径为5μm以下。 高强度热镀锌钢板的拉伸强度为980MPa以上，成形性和焊接性优异。

公开(公告)号：US20100035079A1

公开(公告)日：2010-02-11

申请号：US12527879

申请日：2007-12-14

申请人： Kohei Hasegawa ,  Tadashi Inoue ,  Takamasa Kawai ,  Yukio Kimura

发明人： Kohei Hasegawa ,  Tadashi Inoue ,  Takamasa Kawai ,  Yukio Kimura

IPC分类号： B32B3/30 ,  B21B1/22 ,  B21B23/00

CPC分类号： C22C38/06 ,  B21B1/227 ,  B21B27/005 ,  B21B2001/228 ,  B21B2265/14 ,  B21B2267/10 ,  C21D7/04 ,  C21D8/02 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  Y10T428/12389

摘要： A high-strength cold-rolled steel sheet having a tensile strength of 340 MPa or more, which can prevent galling, can be manufactured even if a large number of the steel sheets are continuously press-formed. This is because a surface texture thereof is con-trolled so that the surface texture includes flat areas in which a roughness profile has a deviation of ±2 μm or less from a filtered waviness curve and a dented portion having a maximum depth between 10 μm and 50 μm from the filtered waviness curve, wherein an average area of the dented portion is more than 0.01 mm2 and 0.2 mm2 or less, and an area fraction of the dented portion relative to the entire surface thereof is 5% or more and less than 20%.

摘要翻译： 即使连续地压制多个钢板，也可以制造能够防止磨损的抗拉强度为340MPa以上的高强度冷轧钢板。 这是因为其表面纹理被控制，使得表面纹理包括平坦区域，其中粗糙度轮廓与过滤的波纹曲线具有±2μm或更小的偏差，以及具有最大深度在10um和 50μm，其中凹陷部分的平均面积大于0.01mm 2和0.2mm 2或更小，并且凹陷部分相对于其整个表面的面积分数为5％以上且小于20％ ％。

公开(公告)号：US5679799A

公开(公告)日：1997-10-21

申请号：US553022

申请日：1995-11-03

申请人： Katsuhisa Isogai ,  Kohei Hasegawa

发明人： Katsuhisa Isogai ,  Kohei Hasegawa

IPC分类号： C07D209/34 ,  C07D209/32

CPC分类号： C07D209/34

摘要： There is disclosed a method for producing oxyindoles, which comprises reacting a 2-halogenophenylacetic acid or its salt with ammonia in the presence of a copper salt catalyst, and heating a mixture of the produced 2-aminophenylacetic acid or its salt and oxyindoles in the presence of an acid catalyst, to subject the 2-aminophenylacetic acid or its salt to a ring-closure reaction. According to this method, relatively readily available 2-halogenophenylacetic acids are used as a starting raw material to industrially produce highly pure oxyindoles in high yield in one pot without involving complicated steps. Further, since the amination is carried out at a temperature greatly lower than that of the conventional art, the lowering of the pH of the reaction liquid can be suppressed. Therefore, the restrictions on the specifications of the reaction apparatus, such as corrosion prevention and pressure resistance, can be mitigated.

摘要翻译： 公开了一种制备羟吲哚的方法，其包括在铜盐催化剂存在下使2-卤代苯基乙酸或其盐与氨反应，并在所存在的条件下加热所产生的2-氨基苯乙酸或其盐与羟基吲哚的混合物 的酸催化剂，以使2-氨基苯基乙酸或其盐进行闭环反应。 根据该方法，使用相对容易获得的2-卤代苯基乙酸作为起始原料，在一锅中以高产率工业生产高纯度的氧吲哚，而不涉及复杂的步骤。 此外，由于胺化在比现有技术大大降低的温度下进行，所以可以抑制反应液的pH降低。 因此，可以减轻对反应装置的规格的限制，例如防腐蚀和耐压性。

公开(公告)号：US5441582A

公开(公告)日：1995-08-15

申请号：US188155

申请日：1994-01-27

申请人： Takeshi Fujita ,  Shinji Mitao ,  Kohei Hasegawa ,  Masataka Suga

发明人： Takeshi Fujita ,  Shinji Mitao ,  Kohei Hasegawa ,  Masataka Suga

IPC分类号： C22C21/06 ,  C22F1/047 ,  C22C21/08

CPC分类号： C22C21/06 ,  C22F1/047

摘要： Disclosed is a method manufacturing an aluminum alloy sheet comprising preparing an aluminum alloy ingot essentially consisting of 1.5 to 3.5% by weight of Mg, 0.3% to 1.0% by weight of Cu, 0.05 to 0.35% by weight of Si, 0.03 to 0.5% by weight of Fe, 0.005 to 0.15% by weight of Ti, 0.0002 to 0.05% by weight of B and a balance of Al, in which the ratio of Mg/Cu is in the range of 2 to 7, homogenizing the ingot in one step or in multiple steps, performed at a temperature within the range of 400.degree. to 580.degree. C., preparing an alloy sheet having a desired sheet thickness by subjecting the ingot to a hot rolling and a cold rolling, subjecting the alloy sheet to a heat treatment including heating the sheet up to a range of 500.degree. to 580.degree. C. at a heating rate of 3.degree. C./second or more, keeping it at the temperature reached for 0 to 60 seconds, and cooling at a cooling rate of 2.degree. C./second or more, subjecting the alloy sheet to a preliminary aging treatment performed at a temperature within the range of 45.degree. to 100.degree. C. for 2 to 48 hours after keeping at room temperature or immediately after the heat treatment, and subjecting the alloy sheet to a restoring treatment performed at a temperature within the range of 180.degree. to 300.degree. C. for 3 to 60 seconds. Thus, a natural aging-retardated aluminum alloy sheet exhibiting excellent formability and excellent bake hardenability is obtained.

摘要翻译： 公开了一种制造铝合金板的方法，其包括制备基本上由1.5至3.5重量％的Mg，0.3重量％至1.0重量％的Cu，0.05至0.35重量％的Si，0.03至0.5重量％ 的Fe，0.005〜0.15重量％的Ti，0.0002〜0.05重量％的B，余量为Al，其中Mg / Cu的比例在2〜7的范围内，将锭均质化为1 在400〜580℃的温度范围内进行工序或多步骤，通过对锭进行热轧和冷轧，制备具有所需片材厚度的合金板，对合金板进行 热处理，包括以3℃/秒以上的加热速度将片材加热至500〜580℃的范围，将其保持在0〜60秒的温度下，以冷却速度 在2℃/秒以上的温度下进行预熟化处理 在室温或立即热处理后保持2〜48小时，在45〜100℃的范围内进行2〜48小时，在180〜300℃的温度范围内进行恢复处理 C. 3至60秒。 因此，获得了优异的成形性和优异的烘烤淬透性的自然老化延迟铝合金板。