公开(公告)号：US09914988B2

公开(公告)日：2018-03-13

申请号：US13980981

申请日：2011-11-30

Applicant: Katsutoshi Takashima ,  Yuki Toji ,  Kohei Hasegawa

Inventor： Katsutoshi Takashima ,  Yuki Toji ,  Kohei Hasegawa

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

CPC classification number: 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

Abstract: 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

Applicant: Masataka Yoshino ,  Kohei Hasegawa

Inventor： Masataka Yoshino ,  Kohei Hasegawa

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

CPC classification number: 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

Abstract: 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.

Abstract translation: 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

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

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

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

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

Abstract: 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.

Abstract translation: 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

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

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

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

CPC classification number: 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

Abstract: 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.

Abstract translation: 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

Applicant: Kohei Hasegawa ,  Tadashi Inoue ,  Takamasa Kawai ,  Yukio Kimura

Inventor： Kohei Hasegawa ,  Tadashi Inoue ,  Takamasa Kawai ,  Yukio Kimura

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

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

Abstract: 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%.

Abstract translation: 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

Applicant: Katsuhisa Isogai ,  Kohei Hasegawa

Inventor： Katsuhisa Isogai ,  Kohei Hasegawa

IPC: C07D209/34 ,  C07D209/32

CPC classification number: C07D209/34

Abstract: 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.

Abstract translation: 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

Applicant: Takeshi Fujita ,  Shinji Mitao ,  Kohei Hasegawa ,  Masataka Suga

Inventor： Takeshi Fujita ,  Shinji Mitao ,  Kohei Hasegawa ,  Masataka Suga

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

CPC classification number: C22C21/06 ,  C22F1/047

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08668789B2

公开(公告)日：2014-03-11

申请号：US13387761

申请日：2010-07-27

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

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

IPC: C21D6/00 ,  C21D1/52 ,  C21D1/26

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

Abstract: 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.

Abstract translation: 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：@ 0.02质量％，Al：0.01〜1质量％，N：0.01质量％，Fe和不可避免的杂质：余量，使冷轧钢板以 使用氧化燃烧器将钢板温度> 700℃，然后在还原气氛炉中在750-900℃下浸泡退火，然后冷却，使平均冷却速率在500℃和100℃之间 C. => 50°C / s。 在不控制条件的情况下获得具有高Si值= 0.6％的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汽氢分压比。

公开(公告)号：US20120040203A1

公开(公告)日：2012-02-16

申请号：US13264006

申请日：2010-04-27

Applicant: Shusaku Takagi ,  Kohei Hasegawa

Inventor： Shusaku Takagi ,  Kohei Hasegawa

IPC: B21C1/00 ,  B21B45/04

CPC classification number: C23C2/02 ,  B32B15/013 ,  C21D8/0405 ,  C21D8/0426 ,  C21D8/0463 ,  C21D8/0473 ,  C21D9/46 ,  C21D9/48 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/06 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C23C2/06 ,  C23C2/28 ,  Y10T428/12229 ,  Y10T428/12799

Abstract: A high strength galvanized steel sheet including all in mass %, C: 0.05% to

Abstract translation: 1.一种高强度镀锌钢板，其全部以质量％计，C：0.05％〜<0.12％，Si：0.35％〜<0.80％，Mn：2.0〜3.5％，P：0.001〜0.040％，S：0.0001〜0.0050％ ，Al：0.005〜0.1％，N：0.0001〜0.0060％，Cr：0.01〜0.5％，Ti：0.010〜0.080％，Nb：0.010〜0.080％，B：0.0001〜0.0030％ Mo：0.01〜0.15％，Ca：0.0001〜0.0050％，REM：0.0001〜0.1％，Sb：0.0001〜0.1％，Fe和不可避免的杂质作为平衡，具有含有体积分数的铁素体相的组织 20〜70％的范围，平均粒径等于或小于5μm，并且在其表面上具有涂层重量（每侧）为20至150g / m 2的镀锌层。

公开(公告)号：US20050173031A1

公开(公告)日：2005-08-11

申请号：US11040994

申请日：2005-01-20

Applicant: Kohei Hasegawa ,  Saiji Matsuoka ,  Yasuhide Ishiguro

Inventor： Kohei Hasegawa ,  Saiji Matsuoka ,  Yasuhide Ishiguro

IPC: B21B1/26 ,  B21B1/46 ,  B21B3/00 ,  C21D8/02 ,  C21D9/46 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/38 ,  C22C38/60

CPC classification number: C22C38/02 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/04

Abstract: The high strength steel sheet consists essentially of 0.05 to 0.15% C, 0.5% or less Si, 1.00 to 2.00% Mn, 0.09% or less P, 0.01% or less S, 0.005% or less N, 0.01 to 0.1% Sol.Al, and balance of Fe and inevitable impurities; and contains 60% or more polygonal ferrite by volume, and 5 to 30% martensite by volume. The steel sheet is manufactured by the steps of: casting a slab having the specified composition; hot-rolling the slab at Ar3 point or more temperature; beginning cooling the hot-rolled steel sheet within 2 seconds after completing the hot-rolling to a temperature of from 750° C. to 600° C. at a cooling rate of 150° C./s or more; holding the cooled steel sheet at a temperature between 750° C. and 600° C. for 2 to 15 seconds; cooling the steel sheet at a cooling rate of 20° C./s or more; and coiling the cooled steel sheet at a temperature of 400° C. or less.

Abstract translation: 高强度钢板基本上由0.05〜0.15％的C，0.5％以下的Si，1.00〜2.00％的Mn，0.09％以下的P，0.01％以下的S，0.005％以下的N，0.01〜0.1％的Sol组成。 Al，余量为Fe和不可避免的杂质; 并且含有60体积％以上的多边形铁素体，体积为5〜30体积％的马氏体。 钢板通过以下步骤制造：铸造具有指定组成的板坯; 在Ar3点或更高温度下热轧板坯; 在150℃/ s以上的冷却速度下，在完成热轧后的2秒钟内开始冷却到750℃〜600℃的温度。 将冷却的钢板在750℃至600℃的温度下保持2至15秒; 以20℃/ s以上的冷却速度冷却钢板; 并在400℃以下的温度下卷取冷却后的钢板。