Press-formed product and method for producing same
    33.
    发明授权
    Press-formed product and method for producing same 有权
    压制成型品及其制造方法

    公开(公告)号:US09315876B2

    公开(公告)日:2016-04-19

    申请号:US13876832

    申请日:2011-09-30

    摘要: There is provided a useful method for producing a press-formed product without causing disadvantages such as hardness variation, which product has favorable formability in a level so as to be able to be produced by deep drawing, and which method is carried out by heating a thin steel sheet to a temperature not lower than an Ac3 transformation point thereof; and then cooling the thin steel sheet at a rate not lower than a critical cooling rate, during which the thin steel sheet is formed into the press-formed product, wherein the forming is started from a temperature higher than a martensitic transformation start temperature Ms thereof, the cooling rate is kept to be 10° C./sec. or higher during the forming, and the forming is finished in a temperature range not higher than the martensitic transformation start temperature Ms.

    摘要翻译: 提供了一种用于生产压制成型产品的有用方法,而不会引起诸如硬度变化的缺点,该产品在能够通过深冲制造的水平上具有良好的成型性,并且哪种方法通过加热 薄钢板至不低于其Ac3相变点的温度; 然后以不低于临界冷却速度的速度冷却薄钢板,在此期间将薄钢板形成为压制成形品,其中,从高于马氏体相变开始温度Ms的温度开始成型 ,冷却速度保持在10℃/秒。 或更高,并且在不高于马氏体转变开始温度的温度范围内完成成型

    METHOD FOR PRODUCING PRESS-FORMED PRODUCT
    35.
    发明申请
    METHOD FOR PRODUCING PRESS-FORMED PRODUCT 有权
    生产压制产品的方法

    公开(公告)号:US20130199258A1

    公开(公告)日:2013-08-08

    申请号:US13877105

    申请日:2011-09-30

    IPC分类号: B21D37/16 B21D22/20

    摘要: There is provided a useful method for producing a press-formed product without making the structure of a press tool complicated, which product has favorable formability in a level so as to be able to be produced by deep drawing, and which product is produced by press-forming a thin steel sheet with a punch and a die, in which the thin steel sheet is heated to a temperature not lower than an Ac3 transformation point thereof, and the press-forming is then started, wherein the forming is carried out so that a temperature difference in the thin steel sheet is adjusted to be not higher than 200° C. at a stage when the thin steel sheet has reached one third of a forming height.

    摘要翻译: 提供了一种用于生产压制成型产品的有用方法,而不会使压制工具的结构复杂化,该产品具有良好的成形性,能够通过深冲制造而产生,并且哪种产品通过压制 形成具有冲头和模具的薄钢板,其中将薄钢板加热至不低于其Ac3相变点的温度,然后开始压制成形,其中成形是这样进行的: 在薄钢板达到成形高度的三分之一的阶段,将薄钢板的温差调节为不高于200℃。

    PRESS-FORMED PRODUCT AND METHOD FOR PRODUCING SAME
    36.
    发明申请
    PRESS-FORMED PRODUCT AND METHOD FOR PRODUCING SAME 有权
    压制产品及其生产方法

    公开(公告)号:US20130180635A1

    公开(公告)日:2013-07-18

    申请号:US13876832

    申请日:2011-09-30

    IPC分类号: C21D8/00

    摘要: There is provided a useful method for producing a press-formed product without causing disadvantages such as hardness variation, which product has favorable formability in a level so as to be able to be produced by deep drawing, and which method is carried out by heating a thin steel sheet to a temperature not lower than an Ac3 transformation point thereof; and then cooling the thin steel sheet at a rate not lower than a critical cooling rate, during which the thin steel sheet is formed into the press-formed product, wherein the forming is started from a temperature higher than a martensitic transformation start temperature Ms thereof, the cooling rate is kept to be 10° C./sec. or higher during the forming, and the forming is finished in a temperature range not higher than the martensitic transformation start temperature Ms.

    摘要翻译: 提供了一种用于生产压制成型产品的有用方法,而不会引起诸如硬度变化的缺点,该产品在能够通过深冲制造的水平上具有良好的成型性,并且哪种方法通过加热 薄钢板至不低于其Ac3相变点的温度; 然后以不低于临界冷却速度的速度冷却薄钢板,在此期间将薄钢板形成为压制成形品,其中,从高于马氏体相变开始温度Ms的温度开始成型 ,冷却速度保持在10℃/秒。 或更高,并且在不高于马氏体转变开始温度的温度范围内完成成型