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    PIPE ELEMENT FOR GAS PRESSURE VESSEL, AND GAS PRESSURE VESSEL
    1.
    发明申请
    PIPE ELEMENT FOR GAS PRESSURE VESSEL, AND GAS PRESSURE VESSEL 有权

    公开(公告)号：US20210002749A1

    公开(公告)日：2021-01-07

    申请号：US16982899

    申请日：2019-03-20

    申请人： Benteler Steel/Tube GmbH

    发明人： Wigbert Christophliemke ,  Leonhard Rose ,  Marcel Wellpott

    IPC分类号： C22C38/54 ,  F16L9/02 ,  F16L9/00 ,  B60R21/261 ,  C22C38/50 ,  C22C38/48 ,  C22C38/44 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02

    摘要： The present invention relates to a tubular element for a gas pressure container of an airbag system of a motor vehicle, wherein the tubular element (10) has at least one first length section (100, 101) and at least one recess (11) extending in the circumferential direction, characterized in that the tubular element (10) has at least one second length section (102), formed by the recess (11) extending over at least a part of the circumference of the tubular element (10), that the second length section (102) lies between two first length sections (100, 101), that in at least one first length section (100, 101) the outer radius (A1) of the tubular element (10) is greater than the smallest outer radius (A2) of the at least one second length section (102), that the tubular element (10) has a tensile strength of >920 MPa, that the wall thickness (W2) of the tubular element (10) in the at least one second length section (102) is thicker than or equal to the wall thickness (W1) in at least one first length section (100, 101) of the tubular element (10), that the degree of reduction of the outer radius (A2) in the recess (11) lies in the range of 5 to 35% relative to the outer radius (A1) of at least one first length section (100, 101), and that the tubular element (10) consists of a material which, in addition to iron and impurities due to melting, comprises the following alloying elements in the ranges indicated in percent by weight: C 0.05-0.2% Si≤0.9% Mn 0.2-2.0% Cr 0.05-2% Mo

    TUBULAR ELEMENT FOR GAS PRESSURE VESSEL, GAS PRESSURE VESSEL AND METHOD OF MANUFACTURING A TUBULAR ELEMENT
    2.
    发明申请
    TUBULAR ELEMENT FOR GAS PRESSURE VESSEL, GAS PRESSURE VESSEL AND METHOD OF MANUFACTURING A TUBULAR ELEMENT 审中-公开

    公开(公告)号：US20200094773A1

    公开(公告)日：2020-03-26

    申请号：US16577725

    申请日：2019-09-20

    申请人： Benteler Steel/Tube GmbH

    发明人： Daniel Lücke ,  Michael Markert ,  Dirk Tegethoff ,  Marcel Wellpott

    IPC分类号： B60R21/26 ,  F16L9/00 ,  B21C1/24

    摘要： This invention concerns a tubular element for a gas pressure vessel of an airbag module, in particular of a vehicle, wherein the tubular element (1) consists of high-strength steel, has a first and a second end (17, 18) and from the first end (17) to the second end (18) the tubular element (1) has an undeformed section (11), a transition section (12) and a tapering section (13) and on the tapering section (13) at least one radially outwardly extending collar (14) is formed, characterized in that the collar (14) is separated from the transition section (12) by a first length section (130) having an outer diameter (A1) smaller than the outer diameter (A2) of the collar (14) and the wall thickness of the collar (14) is greater than the wall thickness of the first length section (130). Furthermore, the invention concerns a gas pressure vessel and a process for manufacturing a tubular element according to the invention (1).

    METHOD FOR THE PRODUCTION OF AN INTERNAL STOP IN A TUBULAR COMPONENT
    3.
    发明申请
    METHOD FOR THE PRODUCTION OF AN INTERNAL STOP IN A TUBULAR COMPONENT 有权

    公开(公告)号：US20220176436A1

    公开(公告)日：2022-06-09

    申请号：US17545630

    申请日：2021-12-08

    申请人： Benteler Steel/Tube GmbH

    发明人： Daniel Lücke ,  Michael Markert ,  Marcel Wellpott ,  Dirk Tegethoff

    IPC分类号： B21D39/04

    摘要： An inner diameter of a first end of a tubular component, positioned in relation to a first die, is reduced through relative movement between the tubular component and the first die such as to produce a first conical area between first and second ends of the tubular component. The first conical area is then formed through relative movement of a second die to create in a longitudinal section of the first conical area an outer circumferential embossment and an inner bead having an inner diameter smaller than the inner diameter of the first end. The first end is widened through insertion of an inner tool, while the tubular component is supported on an outside in a mold cavity of an outer tool. An inner contour with an internal stop is formed as an outer surface of the first end of the tubular component rests flatly in the mold cavity.

    Method for the production of an internal stop in a tubular component
    8.
    发明授权
    Method for the production of an internal stop in a tubular component 有权

    公开(公告)号：US11446729B2

    公开(公告)日：2022-09-20

    申请号：US17545630

    申请日：2021-12-08

    申请人： Benteler Steel/Tube GmbH

    发明人： Daniel Lücke ,  Michael Markert ,  Marcel Wellpott ,  Dirk Tegethoff

    IPC分类号： B21D39/04

    摘要： An inner diameter of a first end of a tubular component, positioned in relation to a first die, is reduced through relative movement between the tubular component and the first die such as to produce a first conical area between first and second ends of the tubular component. The first conical area is then formed through relative movement of a second die to create in a longitudinal section of the first conical area an outer circumferential embossment and an inner bead having an inner diameter smaller than the inner diameter of the first end. The first end is widened through insertion of an inner tool, while the tubular component is supported on an outside in a mold cavity of an outer tool. An inner contour with an internal stop is formed as an outer surface of the first end of the tubular component rests flatly in the mold cavity.