公开(公告)号：US20130025340A1

公开(公告)日：2013-01-31

申请号：US13638952

申请日：2011-03-28

申请人： Masanori Kobayashi

发明人： Masanori Kobayashi

IPC分类号： B21J5/00 ,  B23P17/00

CPC分类号： B21D22/02 ,  B21D22/208 ,  B21D37/16 ,  C21D1/18 ,  C21D1/673 ,  C21D7/13 ,  C21D8/0447 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18

摘要： A hardenable steel sheet is treated with press-forming by means of a die. The method is comprised of: heating the steel sheet to a temperature of an Ac3 point or higher; carrying out a primary press on the heated steel sheet so as to give a local strain to a limited part of the steel sheet; keeping the steel sheet in a state apart from the die shortly after the primary press; and carrying out a press on the steel sheet kept in the state and retain the steel sheet in close contact with the die.

摘要翻译： 可硬化钢板通过模具进行压制成型处理。 该方法包括：将钢板加热至Ac3点以上的温度; 在加热后的钢板上进行初次压制，对钢板的有限部分施加局部应变; 在初次压机之后不久将钢板保持在不同于模具的状态; 并在保持在该状态的钢板上进行压制，并且保持钢板与模具紧密接触。

公开(公告)号：US20130000796A1

公开(公告)日：2013-01-03

申请号：US13635805

申请日：2011-03-31

申请人： Kengo Takeda ,  Kazuhisa Kusumi ,  Haruhiko Eguchi ,  Jun Hirowatari ,  Shintarou Fujii

发明人： Kengo Takeda ,  Kazuhisa Kusumi ,  Haruhiko Eguchi ,  Jun Hirowatari ,  Shintarou Fujii

IPC分类号： B32B15/01 ,  C21D8/02 ,  C23C2/02

CPC分类号： C22C38/38 ,  B32B15/013 ,  C21D6/00 ,  C21D8/0405 ,  C21D8/0447 ,  C21D8/0473 ,  C21D9/46 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C23C2/06 ,  C23C2/28

摘要： High strength hot dipped galvanized steel sheet with little fluctuation in material quality at the time of production and excellent in shapeability is provided.By controlling the amount of addition of Ti instead of the addition of Nb or B, it is possible to obtain an effect of retarding recrystallization and grain growth even if annealing by a continuous annealing process in a temperature range of the general annealing temperature of 720° C. to a temperature of the lower of 800° C. or Ac3 temperature (easy annealing temperature region).Further, by controlling the rolling and heat treatment conditions, it is possible to control the ferrite phase rate, grain size of the low temperature transformed phases, ratio of average values of the nano hardnesses of the ferrite phase and low temperature transformed phases, and fluctuations of hardnesses of the low temperature transformed phases in a composite structure steel of ferrite and low temperature transformed phases and obtain high strength hot dipped galvanized steel sheet which has little fluctuation in material quality and is excellent in shapeability.

摘要翻译： 提供了在制造时材料质量波动小且成形性优异的高强度热浸镀锌钢板。 通过控制Ti的添加量而不是添加Nb或B，即使在通常退火温度为720°的温度范围内通过连续退火工艺进行退火，也可以获得延迟再结晶和晶粒生长的效果 C.到800℃以下的温度或Ac3温度（容易退火温度区域）。 此外，通过控制轧制和热处理条件，可以控制铁素体相速率，低温变形相的晶粒尺寸，铁素体相的纳米硬度的平均值与低温变形相的平均值的比例和波动 在铁素体和低温转化相的复合结构钢中的低温变形相的硬度，得到材料质量波动小，成形性优异的高强度热浸镀锌钢板。

公开(公告)号：US20120273096A1

公开(公告)日：2012-11-01

申请号：US13438495

申请日：2012-04-03

申请人： Bohuslav Masek ,  Hana Jirkova ,  Ludmila Kucerova ,  Andrea Ronesova ,  Stépán Jenicek

发明人： Bohuslav Masek ,  Hana Jirkova ,  Ludmila Kucerova ,  Andrea Ronesova ,  Stépán Jenicek

IPC分类号： C21D9/48

CPC分类号： C21D1/673 ,  C21D8/0447 ,  C21D9/48 ,  C21D2221/00 ,  C21D2261/00

摘要： According to the method of production of a steel sheet pressed part with locally modified properties, the steel sheet blank is first heated in a device for heating to the austenitic temperature of the material. Next, the steel sheet blank is converted in a tool for deep drawing by deformation into a final drawn part. Subsequently, the final drawn part is cooled inside the tool for deep drawing. Various locations of the final drawn part are cooled to various temperatures and/or at various rates during the cooling process. Thereafter, the final drawn part is placed in an annealing device, where retained austenite stabilization occurs by diffusion-based carbon partitioning within the material from which the drawn part is made. After stabilization, the final drawn part is removed from the annealing device and air cooled to ambient temperature.

摘要翻译： 根据具有局部改性特性的钢板压制件的制造方法，首先在加热装置中将钢板坯加热至材料的奥氏体温度。 接下来，将钢板坯通过变形转换成用于深冲的工具进入最终拉伸部。 随后，最终拉伸部分在工具内冷却以进行深冲。 最终拉伸部分的各个位置在冷却过程中被冷却到各种温度和/或以各种速率。 之后，将最终拉伸部分放置在退火装置中，其中残留的奥氏体稳定通过制造拉制部分的材料内的基于扩散的碳分配发生。 稳定化后，将最终拉伸部分从退火装置中取出并空气冷却至环境温度。

公开(公告)号：US08273196B2

公开(公告)日：2012-09-25

申请号：US12331889

申请日：2008-12-10

申请人： Akira Hibino ,  Koji Ichitani

发明人： Akira Hibino ,  Koji Ichitani

IPC分类号： C22F1/05

CPC分类号： C21D8/0447 ,  B21D22/20 ,  C21D2221/00 ,  C22C21/02 ,  C22C21/08 ,  C22F1/05 ,  Y10T428/12736

摘要： An Al—Mg—Si based aluminum alloy sheet having undergone normal-temperature aging (or being in a underaged state) after a solution treatment thereof is, before press forming, subjected to a heating treatment (partial reversion heating treatment) in which the alloy sheet is partially heated to a temperature in the range of 150 to 350° C. for a time of not more than 5 minutes so that the difference in strength (difference in 0.2% proof stress) between the heated part and the non-heated part will be not less than 10 MPa. The alloy sheet thus treated is subjected to cold press forming in the condition where the heated part with low strength is put in contact with a wrinkle holding-down appliance of the press and the non-heated part with high strength is put in contact with the shoulder part (radius) of the punch. In the partial reversion heating treatment, the temperature rise rate and the cooling rate in cooling down to 100° C. or below are set to be not less than 30° C./min. Further, the period for which the alloy sheet is left to stand at normal temperature after the partial reversion heating treatment until the cold press forming is set to be within 30 days.

摘要翻译： 经过固溶处理后，经历了常温老化（或处于未成熟状态）的Al-Mg-Si系铝合金板在进行压制成形之前，进行加热处理（部分回复加热处理），其中合金 将片材部分地加热到150-350℃的温度不超过5分钟的时间，使得加热部分和未加热部分之间的强度差（0.2％屈服应力差） 将不会低于10MPa。 将这样处理的合金薄片进行冷压成型，其中，将具有低强度的加热部件与冲压机的起皱装置接触，并且将具有高强度的非加热部件与 肩部（半径）的冲头。 在部分回复加热处理中，将冷却至100℃以下的升温速度和冷却速度设定为30℃/分钟以上。 此外，在部分逆转加热处理直到冷压成型之后，合金板在常温下放置的时间段设定在30天以内。

公开(公告)号：US08133330B2

公开(公告)日：2012-03-13

申请号：US12571753

申请日：2009-10-01

申请人： Yuichi Futamura ,  Masaaki Miura

发明人： Yuichi Futamura ,  Masaaki Miura

IPC分类号： C21D11/00 ,  C22C38/00

CPC分类号： C22C38/04 ,  C21D6/001 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0405 ,  C21D8/0447 ,  C21D9/46 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/02 ,  C22C38/08 ,  C22C38/16 ,  C22C38/22 ,  C23C2/02 ,  C23C2/28

摘要： A high-strength hot-dip galvanized steel sheet excellent in workability according to the present invention: contains C, Si, Mn and other elements; has a dual phase structure containing ferrite and martensite as the metallographic structure; and, in the ferrite structure, satisfies the expression 0.2≦(Lb/La)≦1.5 when the length per unit area of the grain boundaries of crystal grains the crystal orientation differences of which are 10 degrees or more is defined as La and the length per unit area of the grain boundaries of crystal grains the crystal orientation differences of which are less than 10 degrees is defined as Lb, and further satisfies the requirements that the average value of D is 25 μm or less and the area ratio of crystal grains satisfying the expression D≦30 μm in the ferrite grains surrounded by the grain boundaries of crystal grains the crystal orientation differences of which are 10 degrees or more is 50% or more when the circle equivalent diameter of each of ferrite grains surrounded by the grain boundaries of crystal grains the crystal orientation differences of which are 10 degrees or more is defined as D; and has a tensile strength of 980 MPa or more.

摘要翻译： 本发明的加工性优异的高强度热浸镀锌钢板含有C，Si，Mn等元素; 具有含有铁素体和马氏体作为金相结构的双相结构; 并且在铁素体结构中，当晶体取向差为10度以上的晶粒的晶界的每单位面积的长度被定义为La时，铁素体结构满足表达式0.2＆nlE;（Lb / La）＆nlE; 1.5 将晶体取向差小于10度的晶粒的晶界的单位面积的长度定义为Lb，进一步满足D的平均值为25μm以下，晶体的面积比 满足表达式D＆nlE的晶粒;当晶粒包围的铁素体晶体的圆当量直径由晶粒包围的晶体取向差为10度以上时，由晶粒边界包围的铁素体晶体中的30μm为30％以上 其晶体取向差为10度以上的晶粒边界定义为D; 拉伸强度为980MPa以上。