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：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：US20110073218A1

公开(公告)日：2011-03-31

申请号：US12962950

申请日：2010-12-08

申请人： Jun HAGA ,  Nobusato KOJIMA

发明人： Jun HAGA ,  Nobusato KOJIMA

IPC分类号： C22C38/02 ,  C22C38/22 ,  C22C38/32 ,  C21D11/00

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 满足关系式（Hv（max）-Hv（ave））<0.5×（Hv（ave））的板宽度方向的长度为10mm，Hv（max）为铁素体的最大维氏硬度 当高强度冷轧钢板的厚度为t时，从表面的厚度方向到（⅛）t至（¼）t的距离的区域，Hv（ave）是平均维氏硬度 铁素体晶粒在该区域。