公开(公告)号：US09045817B2

公开(公告)日：2015-06-02

申请号：US12842336

申请日：2010-07-23

申请人： Tamotsu Toki ,  Atsushi Tomizawa ,  Nobusato Kojima ,  Kazuya Ishii ,  Kazuhito Imai ,  Toyomitsu Nakamura ,  Naoaki Shimada

发明人： Tamotsu Toki ,  Atsushi Tomizawa ,  Nobusato Kojima ,  Kazuya Ishii ,  Kazuhito Imai ,  Toyomitsu Nakamura ,  Naoaki Shimada

IPC分类号： C23C2/06 ,  C23C2/28 ,  C21D1/18 ,  C21D1/19 ,  C21D9/52

CPC分类号： C23C2/06 ,  C21D1/18 ,  C21D1/19 ,  C21D9/52 ,  C21D2221/00 ,  C23C2/28

摘要： A heat treated galvannealed steel material having excellent post-painting corrosion resistance and a high strength which is suitable for use as an automotive part and a method for its manufacture are provided. A galvannealed steel material having a galvannealed coating on at least one side thereof is heat treated by heating at least a portion thereof to a temperature range in which hardening is possible. The coating remaining on the surface of at least a part of the portion which underwent heat treatment has a coating weight of at least 20 g/m2 and at most 80 g/m2 per side and an Fe content of at least 15% and at most 35%, an η phase is present in the coating, and the centerline average roughness Ra of the surface of the coating is at most 1.5 μm.

摘要翻译： 提供了具有优异的耐后油腐蚀性和高强度的热处理的合金化热浸镀锌钢材，其适合用作汽车部件及其制造方法。 在其至少一侧上具有合金化热浸镀膜的合金化热浸镀锌钢材通过将其至少一部分加热到可以硬化的温度范围进行热处理。 保留在经受热处理的部分的至少一部分的表面上的涂层具有至少20g / m 2和至多80g / m 2每一面的涂层重量和至少15％以上的Fe含量 35％，一等 涂层中存在相位，涂层表面的中心线平均粗糙度Ra为1.5μm以下。

公开(公告)号：US20120009435A1

公开(公告)日：2012-01-12

申请号：US13185575

申请日：2011-07-19

申请人： Toyomitsu NAKAMURA ,  Atsushi TOMIZAWA ,  Naoaki SHIMADA ,  Nobusato KOJIMA ,  Kazuya ISHII ,  Kazuhito IMAI ,  Tamotsu TOKI

发明人： Toyomitsu NAKAMURA ,  Atsushi TOMIZAWA ,  Naoaki SHIMADA ,  Nobusato KOJIMA ,  Kazuya ISHII ,  Kazuhito IMAI ,  Tamotsu TOKI

IPC分类号： B22F5/00 ,  B21D37/16

CPC分类号： B22F5/00 ,  B21D7/08 ,  B21D7/162 ,  B32B1/08 ,  C21D8/105 ,  C21D9/08 ,  C23C2/26 ,  C23C2/28 ,  C23C26/00 ,  Y10T428/12292 ,  Y10T428/1241

摘要： A bent metal member which is obtained by bending accompanied by heat treatment of a zinc-based coated metal material and which is suitable for use in components of automobiles due to having a high strength and excellent post-painting corrosion resistance is manufactured. The outer surface of a tubular metal material having on its surface a Zn—Fe alloy coating layer with a coating weight of 30-90 g/m2 per side, an Fe content of 8-20%, and a surface roughness Ra of at most 0.8 μm is supported at two locations spaced in the axial direction of the metal material so that the material can move in its axial direction, the metal material is heated between the two locations to a temperature range of at least the Ac3 point at a heating speed such that the rate of temperature increase is at least 3.0×102° C. per second while feeding the metal material in its axial direction, holding so that the length of time for which the surface of the metal material is at 8.0×102° C. or higher is at most 2 seconds, then rapid cooling is carried out, and the position of the downstream of the two locations in the feed direction of the metal material is two-dimensionally or three-dimensionally varied to impart a bending moment to the heated portion of the metal material. A bent metal member having a Zn-based layer which contains an η phase and which has a coating weight of 30-90 g/m2 per side, an Fe content of 8-35%, 35%, and a surface roughness Ra of at most 2.0 μm can be manufactured.

摘要翻译： 制造弯曲金属构件，其通过弯曲伴随着锌基涂覆金属材料的热处理而获得，并且由于具有高强度和优异的后涂耐蚀性而适用于汽车的部件。 管状金属材料的外表面在其表面上具有涂层重量为每面30-90g / m 2，Fe含量为8-20％，表面粗糙度Ra为最多的Zn-Fe合金涂层 在金属材料的轴向隔开的两个位置处支撑0.8μm，使得材料可以在其轴向方向上移动，金属材料在两个位置之间被加热到加热速度至少为Ac3点的温度范围 使得在将金属材料沿其轴向方向进给的同时，温度上升速率为每秒至少3.0×102℃，保持金属材料的表面的时间长度为8.0×102℃ 等于或高于2秒，则进行快速冷却，并且金属材料的进给方向上的两个位置的下游位置被二维地或三维地改变以赋予 加热部分的金属材料。 具有Zn基层的弯曲金属构件，其含有＆lt; 相，并且每面涂层重量为30-90g / m 2，Fe含量为8-35％，35％，表面粗糙度Ra为2.0μm以下。

公开(公告)号：US20110048585A1

公开(公告)日：2011-03-03

申请号：US12842336

申请日：2010-07-23

申请人： Tamotsu Toki ,  Atsushi Tomizawa ,  Nobusato Kojima ,  Kazuya Ishii ,  Kazuhito Imai ,  Toyomitsu Nakamura ,  Naoaki Shimada

发明人： Tamotsu Toki ,  Atsushi Tomizawa ,  Nobusato Kojima ,  Kazuya Ishii ,  Kazuhito Imai ,  Toyomitsu Nakamura ,  Naoaki Shimada

IPC分类号： C21D9/00 ,  C22C38/00

CPC分类号： C23C2/06 ,  C21D1/18 ,  C21D1/19 ,  C21D9/52 ,  C21D2221/00 ,  C23C2/28

摘要： A heat treated galvannealed steel material having excellent post-painting corrosion resistance and a high strength which is suitable for use as an automotive part and a method for its manufacture are provided. A galvannealed steel material having a galvannealed coating on at least one side thereof is heat treated by heating at least a portion thereof to a temperature range in which hardening is possible. The coating remaining on the surface of at least a part of the portion which underwent heat treatment has a coating weight of at least 20 g/m2 and at most 80 g/m2 per side and an Fe content of at least 15% and at most 35%, an η phase is present in the coating, and the centerline average roughness Ra of the surface of the coating is at most 1.5 μm.

摘要翻译： 提供了具有优异的耐后油腐蚀性和高强度的热处理的合金化热浸镀锌钢材，其适合用作汽车部件及其制造方法。 在其至少一侧上具有合金化热浸镀膜的合金化热浸镀锌钢材通过将其至少一部分加热到可以硬化的温度范围进行热处理。 保留在经受热处理的部分的至少一部分的表面上的涂层具有至少20g / m 2和至多80g / m 2每一面的涂层重量和至少15％以上的Fe含量 35％，一等 涂层中存在相位，涂层表面的中心线平均粗糙度Ra为1.5μm以下。

公开(公告)号：US20100084892A1

公开(公告)日：2010-04-08

申请号：US12572625

申请日：2009-10-02

申请人： Michitaka Yoshida ,  Nobusato Kojima ,  Atsushi Tomizawa ,  Naoaki Shimada

发明人： Michitaka Yoshida ,  Nobusato Kojima ,  Atsushi Tomizawa ,  Naoaki Shimada

IPC分类号： B62D25/08 ,  B32B15/01 ,  B32B15/02 ,  B62D25/02

CPC分类号： B62D25/04 ,  B21D7/08 ,  B21D53/88 ,  B62D21/152 ,  B62D25/06 ,  B62D25/082 ,  B62D29/007 ,  C21D1/42 ,  C21D9/08 ,  C21D2221/00 ,  Y02P10/253 ,  Y10T428/12292 ,  Y10T428/1241

摘要： A strength member for an automobile body such as a side member or a pillar which has a bent portion which is bent two-dimensionally or three-dimensionally and which has an ultrahigh strength with a tensile strength exceeding 1100 MPa is provided. The strength member for an automobile body has a tubular body which has a closed cross section which does not have an outwardly-extending flange and which has a bent portion which is bent two-dimensionally or three-dimensionally, a portion to be cut or punched, and a portion to be welded. The tubular body has an ultrahigh strength heat-treated portion which has been heat treated to have a tensile strength exceeding 1100 MPa, a high strength heat-treated portion which is the remainder other than the ultrahigh strength heat-treated portion and which has been heat treated to have a tensile strength of at least 600 MPa and at most 1100 MPa, and/or a low strength heat-treated portion which is the portion to be cut or punched or the portion to be welded and which has been heat treated to have a tensile strength of less than 600 MPa.

摘要翻译： 提供一种用于诸如侧构件或柱的汽车体的强度构件，其具有弯曲部分，其被二维或三维地弯曲并且具有超高强度，拉伸强度超过1100MPa。 用于汽车车身的强度构件具有管状体，其具有封闭的横截面，该截面不具有向外延伸的凸缘，并且具有弯曲部分，该弯曲部分被二维或三维弯曲，要被切割或冲压的部分 ，和待焊接的部分。 管体具有经过热处理以具有超过1100MPa的拉伸强度的超高强度热处理部分，除了超高强度热处理部分之外的热强处理部分，并且已经被加热的高强度热处理部分 被处理为具有至少600MPa和至多1100MPa的拉伸强度，和/或作为待切割或冲压的部分的低强度热处理部分或待被焊接的部分并且被热处理以具有 拉伸强度小于600MPa。

公开(公告)号：US08899665B2

公开(公告)日：2014-12-02

申请号：US13874592

申请日：2013-05-01

申请人： Michitaka Yoshida ,  Nobusato Kojima ,  Atsushi Tomizawa ,  Naoaki Shimada

发明人： Michitaka Yoshida ,  Nobusato Kojima ,  Atsushi Tomizawa ,  Naoaki Shimada

IPC分类号： B62D25/04 ,  C21D9/08 ,  B21D7/08 ,  B21D53/88 ,  B62D25/06 ,  B62D29/00 ,  C21D1/42 ,  B62D25/08 ,  B62D21/15

CPC分类号： B62D25/04 ,  B21D7/08 ,  B21D53/88 ,  B62D21/152 ,  B62D25/06 ,  B62D25/082 ,  B62D29/007 ,  C21D1/42 ,  C21D9/08 ,  C21D2221/00 ,  Y02P10/253 ,  Y10T428/12292 ,  Y10T428/1241

摘要： A side structure for an automobile body has an A-pillar having a first portion which has a closed cross section and which is connected to a side sill and extends upwards, and a second portion which has a closed cross section and which is continuous with the first portion and extends along a slope therefrom, and a roof rail side member which has a closed cross section and which is continuous with the A-pillar and is connected to a B-pillar. The side reinforcing member having a closed cross section and a shape which is bent three-dimensionally and which is constituted by a single member in the axial direction and has undergone high frequency quenching is disposed so a to extend at least inside the second portion and inside the roof rail side member to be positioned to the rear of the connection with the B-pillar.

摘要翻译： 一种用于汽车车体的侧面结构，具有A柱，该第一部分具有封闭的横截面并与下纵梁连接并向上延伸的第一部分，以及具有闭合截面且与 第一部分并沿其斜坡延伸，以及一个具有闭合截面且与A柱连续并连接到B柱的屋顶轨道侧构件。 具有闭合截面的侧面加强构件和在轴向上由单个构件构成并经历高频淬火的三维弯曲形状设置成至少在第二部分和内部的内部延伸 屋顶轨道侧构件被定位到与B柱的连接的后部。

公开(公告)号：US20120267919A1

公开(公告)日：2012-10-25

申请号：US13397335

申请日：2012-02-15

申请人： Michitaka YOSHIDA ,  Nobusato Kojima ,  Atsushi Tomizawa ,  Naoaki Shimada

发明人： Michitaka YOSHIDA ,  Nobusato Kojima ,  Atsushi Tomizawa ,  Naoaki Shimada

IPC分类号： B62D21/15

CPC分类号： B62D25/04 ,  B21D7/08 ,  B21D53/88 ,  B62D21/152 ,  B62D25/06 ,  B62D25/082 ,  B62D29/007 ,  C21D1/42 ,  C21D9/08 ,  C21D2221/00 ,  Y02P10/253 ,  Y10T428/12292 ,  Y10T428/1241

摘要： A front side member having a single body formed from a tubular body having a closed cross section has a front portion which extends in the fore and aft direction of a vehicle body, a sloping portion which is continuous with the front portion and slopes downwards along a dash panel, and a rear portion continuous with the sloping portion and extending along the bottom surface of a floor panel joined to the dash panel. A portion of the front portion is an unquenched portion which has not undergone quenching treatment and the remainder is a high frequency quenched portion which has undergone high frequency quenching. The sloping portion is a high frequency quenched portion. A portion of the rear portion is an unquenched portion which has not undergone quenching and the remainder other than that portion is a high frequency quenched portion which has undergone high frequency quenching.

摘要翻译： 具有由具有闭合截面的管状体形成的单体的前侧构件具有沿车体的前后方向延伸的前部，与前部连续的倾斜部，沿着前方部向下倾斜 仪表板，以及与倾斜部分连续并且沿着连接到仪表板的地板面板的底面延伸的后部。 前部的一部分是未经淬火处理的未淬火部分，其余部分是经过高频淬火的高频淬火部分。 倾斜部分是高频淬火部分。 后部的一部分是没有经历淬火的未淬火部分，除了该部分之外的其余部分是经过高频淬火的高频淬火部分。

公开(公告)号：US08136871B2

公开(公告)日：2012-03-20

申请号：US12572625

申请日：2009-10-02

申请人： Michitaka Yoshida ,  Nobusato Kojima ,  Atsushi Tomizawa ,  Naoaki Shimada

发明人： Michitaka Yoshida ,  Nobusato Kojima ,  Atsushi Tomizawa ,  Naoaki Shimada

IPC分类号： B62D21/15

CPC分类号： B62D25/04 ,  B21D7/08 ,  B21D53/88 ,  B62D21/152 ,  B62D25/06 ,  B62D25/082 ,  B62D29/007 ,  C21D1/42 ,  C21D9/08 ,  C21D2221/00 ,  Y02P10/253 ,  Y10T428/12292 ,  Y10T428/1241

摘要： A strength member for an automobile body such as a side member or a pillar which has a bent portion which is bent two-dimensionally or three-dimensionally and which has an ultrahigh strength with a tensile strength exceeding 1100 MPa is provided. The strength member for an automobile body has a tubular body which has a closed cross section which does not have an outwardly-extending flange and which has a bent portion which is bent two-dimensionally or three-dimensionally, a portion to be cut or punched, and a portion to be welded. The tubular body has an ultrahigh strength heat-treated portion which has been heat treated to have a tensile strength exceeding 1100 MPa, a high strength heat-treated portion which is the remainder other than the ultrahigh strength heat-treated portion and which has been heat treated to have a tensile strength of at least 600 MPa and at most 1100 MPa, and/or a low strength heat-treated portion which is the portion to be cut or punched or the portion to be welded and which has been heat treated to have a tensile strength of less than 600 MPa.

摘要翻译： 提供一种用于诸如侧构件或柱的汽车体的强度构件，其具有弯曲部分，其被二维或三维地弯曲并且具有超高强度，拉伸强度超过1100MPa。 用于汽车车身的强度构件具有管状体，其具有封闭的横截面，该截面不具有向外延伸的凸缘，并且具有弯曲部分，该弯曲部分被二维或三维弯曲，要被切割或冲压的部分 ，和待焊接的部分。 管体具有经过热处理以具有超过1100MPa的拉伸强度的超高强度热处理部分，除了超高强度热处理部分之外的热强处理部分，并且已经被加热的高强度热处理部分 被处理为具有至少600MPa和至多1100MPa的拉伸强度，和/或作为待切割或冲压的部分的低强度热处理部分或待被焊接的部分并且被热处理以具有 拉伸强度小于600MPa。

公开(公告)号：US20080202638A1

公开(公告)日：2008-08-28

申请号：US12003945

申请日：2008-01-03

申请人： Jun Haga ,  Nobusato Kojima

发明人： Jun Haga ,  Nobusato Kojima

IPC分类号： C21D7/00 ,  C22C38/00 ,  C22C38/04 ,  C21D7/13 ,  C21D7/02 ,  C22C38/02

CPC分类号： C22C38/18 ,  C21D7/02 ,  C21D7/13 ,  C21D8/0405 ,  C21D8/0463 ,  C21D9/48 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/02 ,  C22C38/04 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40

摘要： A high-strength cold-rolled steel sheet providing a product with a good surface condition after press forming, having excellent bake hardenability and anti room temperature aging property, and having a dual phase structure with a tensile strength of at least 340 MPa is provided.A high-strength cold-rolled steel sheet has a structure comprising a main phase which is a ferrite and a secondary phase which is a low temperature transformation product including a martensite and has a hardness distribution of the ferrite phase in an arbitrary cross section having a length of 10 mm in the widthwise direction of the sheet which satisfies the relationship prescribed by (Hv(max)−Hv(ave))

摘要翻译： 提供一种高压冷轧钢板，其提供压制成型后具有良好表面状态的产品，具有优异的烘烤淬透性和抗室温时效性，并且具有拉伸强度至少为340MPa的双相结构。 高强度冷轧钢板具有包括作为铁素体的主相和作为包含马氏体的低温相变产物的第二相的结构，并且具有在任意截面的铁素体相的硬度分布，其具有 满足由（Hv（max）-Hv（ave））规定的关系的片材的宽度方向上的长度为10mm的高度（< （ave）Hv（max）是在厚度方向（1/8）t至（¼）t的距离处的区域中的铁素体晶粒的最大维氏硬度 当高强度冷轧钢板的厚度为t时，从表面出发，Hv（ave）是该区域的铁素体晶粒的平均维氏硬度。

公开(公告)号：US20130213534A1

公开(公告)日：2013-08-22

申请号：US13591682

申请日：2012-08-22

申请人： Kazuo HIKITA ,  Nobusato KOJIMA

发明人： Kazuo HIKITA ,  Nobusato KOJIMA

IPC分类号： C21D8/00

CPC分类号： C21D8/005 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D2211/003 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/26 ,  C22C38/28 ,  C22C38/44 ,  C22C38/50 ,  C22C38/54 ,  Y10T428/12799

摘要： A steel material which is suitable for hot press working or hot three-dimensional bending and direct quench and which can be used to manufacture a high-strength formed article with sufficient quench hardening even by short time heating at a low temperature has a chemical composition comprising, in mass percent, C: 0.05-0.35%, Si: at most 0.5%, Mn: 0.5-2.5%, P: at most 0.03%, S: at most 0.01%, sol. Al: at most 0.1%, N: at most 0.01%, and optionally at least one element selected from the group consisting of B: 0.0001-0.005%, Ti: 0.01-0.1%, Cr: 0.18-0.5%, Nb: 0.03-0.1%, Ni: 0.18-1.0%, and Mo: 0.03-0.5% and has a steel structure in which the spheroidization ratio of carbides is 0.60-0.90.

摘要翻译： 适用于热压加工或热三维弯曲和直接淬火的钢材，其可用于制造即使在低温下短时间加热也具有足够的淬火硬化的高强度成型制品，其化学组成包括 以质量％计，C：0.05〜0.35％，Si：0.5％以下，Mn：0.5〜2.5％，P：0.03％以下，S：0.01％以下。 Al：0.1％以下，N：0.01％以下，以及任意选自B：0.0001-0.005％，Ti：0.01-0.1％，Cr：0.18〜0.5％，Nb：0.03的至少一种元素 -0.1％，Ni：0.18〜1.0％，Mo：0.03〜0.5％，碳化物的球化率为0.60〜0.90的钢结构。

公开(公告)号：US08490457B2

公开(公告)日：2013-07-23

申请号：US13185575

申请日：2011-07-19

申请人： Toyomitsu Nakamura ,  Atsushi Tomizawa ,  Naoaki Shimada ,  Nobusato Kojima ,  Kazuya Ishii ,  Kazuhito Imai ,  Tamotsu Toki

发明人： Toyomitsu Nakamura ,  Atsushi Tomizawa ,  Naoaki Shimada ,  Nobusato Kojima ,  Kazuya Ishii ,  Kazuhito Imai ,  Tamotsu Toki

IPC分类号： B21D9/00

CPC分类号： B22F5/00 ,  B21D7/08 ,  B21D7/162 ,  B32B1/08 ,  C21D8/105 ,  C21D9/08 ,  C23C2/26 ,  C23C2/28 ,  C23C26/00 ,  Y10T428/12292 ,  Y10T428/1241

摘要： A method of manufacturing a bent metal member comprises supporting the outer surface of a tubular metal material having a Zn-Fe alloy coating layer at two locations spaced in the axial direction of the metal material. The metal material is fed in its axial direction and heated at a position between the two locations to a temperature range of at least the Ac3 point at a heating speed such that the rate of temperature increase is at least 3.0×102° C. per second, held so that the time for which the surface of the metal material is at a temperature of 8.0×102° C. or higher is at most 2 seconds, and then rapid cooled. A bending moment is imparted to the healed portion in two or three dimensions to manufacture a bent metal member having on its surface a Zn-based layer which contains an η, phase.

摘要翻译： 制造弯曲金属构件的方法包括在金属材料的轴向间隔开的两个位置处支撑具有Zn-Fe合金涂层的管状金属材料的外表面。 金属材料沿其轴向进给，并在两个位置之间的位置加热至至少Ac3点的加热速度的温度范围，使得温度升高速率至少为3.0×102℃/秒 保持金属材料的表面的温度为8.0×102℃以上的时间为2秒以下，然后迅速冷却。 弯曲的力矩以二维或三维赋予愈合部分，以制造弯曲的金属部件，其表面上具有含有η相的Zn基层。