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    TUBE FOR SUBSEA APPLICATION
    1.
    发明公开
    TUBE FOR SUBSEA APPLICATION 审中-公开

    公开(公告)号：EP4067519A1

    公开(公告)日：2022-10-05

    申请号：EP21166670.6

    申请日：2021-04-01

    申请人： HIPtec AS

    发明人： Jarvis, David

    IPC分类号： C22C9/06 ,  C22C38/00 ,  B32B15/01 ,  C21D1/26 ,  B23K20/02 ,  B23K20/227 ,  C22C38/40 ,  B23K101/06 ,  B23K103/04

    摘要： The present invention relates to a tube for transporting fluids in seawater. The tube has a tubular body formed of an alloy selected from duplex stainless steel, superduplex stainless steel, a ferritic steel, a martensitic steel or a nickel superalloy and a layer configured to protect the tube from hydrogen induced stress cracking arranged on an outer surface of the tubular body. The layer is formed of an alloy having a copper content of 50 - 95 wt% and a nickel content of 5 - 50 wt%. The tube has a metallurgical bond at an interface between the tubular body and the layer. The metallurgical bond is formed by a hot pressing process for a predetermined time at a predetermined pressure and a predetermined temperature. The present invention also relates to a method for manufacturing a tube. The present invention also relates to a subsea arrangement.

    VERFAHREN ZUM RÜHRREIBVERSCHWEISSEN SOWIE RÜHRREIBVERSCHWEISSTES WERKSTÜCK
    9.
    发明公开
    VERFAHREN ZUM RÜHRREIBVERSCHWEISSEN SOWIE RÜHRREIBVERSCHWEISSTES WERKSTÜCK 审中-公开

    公开(公告)号：EP3328580A1

    公开(公告)日：2018-06-06

    申请号：EP16745460.2

    申请日：2016-07-29

    申请人： Universität Stuttgart

    发明人： WERZ, Martin ,  WEIHE, Stefan

    IPC分类号： B23K20/12 ,  B23K20/227

    CPC分类号： B23K20/1255 ,  B23K20/122 ,  B23K20/1265 ,  B23K20/2275

    摘要： The invention relates to a method for the friction stir welding of two material pieces of greatly differing melting temperatures, wherein the first material piece (12) is overlapped by the second material piece (14). The rotating pin (38) of the friction stir welding tool (10) provides for butt welding and overlap welding simultaneously in that the pin (38) is moved along the end face (22) and contacts the end face either not at all or at most minimally. The same also applies to the extensive side (30) of the first material piece (12), which first material piece is overlapped by the less stable material piece (14).