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    METHOD FOR MANUFACTURING HOLLOW HYDRO-FORMED PRODUCT using MULTI-TUBE ASSEMBLY
    2.
    发明申请
    METHOD FOR MANUFACTURING HOLLOW HYDRO-FORMED PRODUCT using MULTI-TUBE ASSEMBLY 审中-公开
    使用MULTI-TUBE ASSEMBLY制造中空水压成型产品的方法

    公开(公告)号：US20150336154A1

    公开(公告)日：2015-11-26

    申请号：US14412466

    申请日：2013-02-15

    申请人： INSTITUTE FOR RESEARCH & INDUSTRY COOPERATION PUSAN NATIONAL UNIVERSITY

    发明人： Young Hoon MOON ,  Byeong Don JOO ,  Sang Yoon KIM

    IPC分类号： B21D26/051 ,  B21D26/041

    CPC分类号： B21D26/051 ,  B21D26/041 ,  B32B1/08 ,  B32B3/18 ,  B32B2597/00 ,  F16L9/00 ,  F16L9/006 ,  F16L58/02

    摘要： A method for manufacturing a hollow hydro-formed product using a multi-tube assembly is provided, which comprises the steps of: (a) stably placing a multi-tube assembly in a Die, the hollow inner tube having fluid channel holes radially formed therethrough; (b) injecting fluid into the inner periphery of the inner tube; (c) applying fluid pressure to the inner periphery of the outer tube by the fluid while the fluid is discharged through the fluid channel holes of the inner tube; and (d) obtaining a formed product having an intended outer peripheral shape completed according to diameter-enlargement and plastic deformation of the outer tube. The inner periphery of the outer tube is pressed and hydro-formed by discharging the fluid through the fluid channel holes of the inner tube formed through the inner tube of the multi-tube assembly.

    摘要翻译： 提供了一种使用多管组件制造中空加氢成型产品的方法，其包括以下步骤：（a）将多管组件稳定地放置在模具中，所述中空内管具有径向形成在其上的流体通道孔 ; （b）将流体注入内管的内周; （c）当流体通过内管的流体通道孔排出时，通过流体将流体压力施加到外管的内周; 和（d）根据外管的直径扩大和塑性变形获得具有预期的外周形状的成形制品。 通过将流体排出通过多管组件的内管形成的内管的流体通道孔，将外管的内周压入并流体加压。

    Products manufactured by autofrettage
    5.
    发明授权
    Products manufactured by autofrettage 有权

    公开(公告)号：US10518312B1

    公开(公告)日：2019-12-31

    申请号：US15604347

    申请日：2017-05-24

    申请人： SPENCER COMPOSITES CORPORATION

    发明人： Brian E. Spencer ,  Richard L. Grover ,  Zachary B. Spencer

    IPC分类号： B21D26/02 ,  B32B15/01 ,  B32B1/08 ,  B21D26/033 ,  B21D26/041 ,  B32B1/00 ,  B65D6/00 ,  B21D26/051

    摘要： A method of incremental autofrettage is taught herein, whereby the cycle life of a metal liner in a pressure vessel is increased. This method serves to increase the yield strength of the metal liner through sequential work hardening due to repeated autofrettage at increasing pressures. By incrementally increasing the internal pressure used in the autofrettage process, the compressive stresses at an inner surface of the metal liner may be controlled so that post-pressurization buckling does not occur, yet the yield strength of the metal liner is substantially increased. The higher compressive stresses in the metal liner mean that higher Maximum Expected Operating Pressures (MEOPs) may be used without detracting from the cycle life of the metal liner, or alternatively, for lower pressures, a longer metal liner cycle life may be obtained. Either internal or external pressures may be used, generated by a pressure source, or a suitable die.

    Water pipe for which hydroforming is employed, and a production method therefor
    6.
    发明授权
    Water pipe for which hydroforming is employed, and a production method therefor 有权
    采用液压成型的水管及其制造方法

    公开(公告)号：US09101972B2

    公开(公告)日：2015-08-11

    申请号：US13502466

    申请日：2010-04-08

    申请人： Sung-Pill Park ,  Kyung-Soo Jin ,  Yun-Gyu Kim ,  Man-Been Moon

    发明人： Sung-Pill Park ,  Kyung-Soo Jin ,  Yun-Gyu Kim ,  Man-Been Moon

    IPC分类号： F16L9/14 ,  B21D26/051 ,  B21C37/15 ,  B21D26/033 ,  B21D39/04 ,  F16L9/04 ,  F16L58/08 ,  B21D35/00 ,  B21D51/16

    CPC分类号： B21D26/051 ,  B21C37/154 ,  B21D26/033 ,  B21D26/035 ,  B21D35/002 ,  B21D39/04 ,  B21D51/16 ,  F16L9/04 ,  F16L58/08 ,  Y10T29/49805

    摘要： Disclosed are a double water pipe manufactured via hydroforming and a method of manufacturing the same via hydroforming. The method includes (a) inserting an inner pipe into an outer pipe made of steel, the inner pipe being made of a corrosion resistant material selected from among stainless steel, titanium and aluminum, and having a smaller outer diameter than an inner diameter of the outer pipe; (b) placing the outer pipe on a die unit and sealing opposite ends of the die unit with sealing members each having a through-hole connected to a fluid supply unit for supplying a fluid to the inner pipe; (c) supplying the fluid to the inner pipe to perform plastic expansion of the inner pipe and elastic expansion of the outer pipe; and (d) discharging the fluid from the inner pipe to allow frictional coupling between the inner pipe and the outer pipe through elastic restoration of the outer pipe.

    摘要翻译： 公开了通过液压成形制造的双水管及其制造方法。 该方法包括：（a）将内管插入由钢制成的外管中，内管由选自不锈钢，钛和铝的耐腐蚀材料制成，外径比外径小 外管; （b）将外管放置在模具单元上，并用密封件密封模具单元的两端，密封件均具有连接到流体供应单元的通孔，用于向内管供应流体; （c）向内管供应流体以进行内管的塑性膨胀和外管的弹性膨胀; 和（d）从内管排出流体，以通过外管的弹性恢复来允许内管和外管之间的摩擦联接。

    ROLL-OVER PROTECTION STRUCTURE
    8.
    发明申请
    ROLL-OVER PROTECTION STRUCTURE 有权
    滚动保护结构

    公开(公告)号：US20140084628A1

    公开(公告)日：2014-03-27

    申请号：US13628078

    申请日：2012-09-27

    申请人： CATERPILLAR INC.

    发明人： Nilesh A. Sutar ,  Prashant Bulusu

    IPC分类号： B60R21/13 ,  B21D26/051

    CPC分类号： B21D26/051 ,  B21D9/00 ,  B21D53/88 ,  B60R21/131 ,  Y10T29/49622

    摘要： A roll-over protective structure for a frame structure of a cab assembly including an outer tube and an inner tube disposed within the outer tube at a pre-determined location to define a composite tube. The composite tube has an upright support with an end portion, and a transverse support connecting the upright support to define a curved corner. Further, the composite tube may have a U-shaped configuration. The composite tube may be further shaped through a hydroforming process to achieve a desired cross-section at the pre-determined location. For example, the curved corner may have a first cross-section, and the end portion may have a second cross-section.

    摘要翻译： 一种用于驾驶室组件的框架结构的翻转保护结构，包括外管和设置在外管内的预定位置处的内管，以限定复合管。 复合管具有带有端部的直立支撑件和连接直立支架以限定弯曲拐角的横向支撑件。 此外，复合管可以具有U形构造。 复合管可以通过液压成形工艺进一步成型，以在预定位置实现期望的横截面。 例如，弯曲的角部可以具有第一横截面，并且端部可以具有第二横截面。

    Internal high-pressure forming process and apparatus
    9.
    发明授权
    Internal high-pressure forming process and apparatus 失效
    内部高压成型工艺及装置

    公开(公告)号：US5711059A

    公开(公告)日：1998-01-27

    申请号：US436944

    申请日：1995-05-08

    申请人： August Wilhelm Schaefer

    发明人： August Wilhelm Schaefer

    IPC分类号： B21D7/00 ,  B21D26/02 ,  B21D26/029 ,  B21D26/051 ,  B21D26/059 ,  B21D51/10 ,  B23P17/00 ,  B21D28/18 ,  B23K31/02

    CPC分类号： B21D26/029 ,  B21D26/051 ,  B21D26/059 ,  Y10T29/4981

    摘要： To produce an elongate hollow metal body with a cross-sectional contour varying in the longitudinal direction by the internal high-pressure forming process in an internal high-pressure forming press, a sheet-metal blank composed of two blank parts of identical area is first produced, each part having, apart from additional joining-area parts provided in the region of the longitudinal edges, in the longitudinal direction at least the length of the longitudinal hollow body and in the transverse direction at most half the length of the respective cross-sectional contour. Subsequently, the two blank parts are laid one on top of the other and are joined together, in particular welded, in the region of the joining-area parts. Thereafter, the sheet-metal blank is expanded by introducing a pressure medium between the two blank parts held within a tool consisting of two dies. The tool is so shaped that, when it is closed onto the blank, it produces a curved shape in the blank, with the result that the hollow body produced by expansion is curved and can have a cross-sectional contour which varies along its length.

    摘要翻译： 为了通过内部高压成型压力机中的内部高压成形工艺生产具有在纵向方向上变化的横截面轮廓的细长中空金属体，由相同面积的两个空白部分组成的金属板坯是第一 每个部分除了设置在纵向边缘区域中的附加接合区域部分之外还具有纵向至少长度方向的中空体的长度，并且在横向方向上具有至少一半的长度， 截面轮廓。 随后，两个空白部分一个放置在另一个之上，并且在接合区域部分的区域中被连接在一起，特别是焊接在一起。 此后，通过在保持在由两个模具组成的工具中的两个坯件之间引入压力介质来扩张该金属板坯。 该工具的形状是这样形状的，当它封闭在坯件上时，它在坯料中产生弯曲的形状，结果是由膨胀产生的中空体是弯曲的并且可以具有沿其长度变化的横截面轮廓。