Heat resisting metal tube and method for manufacturing same
    2.
    发明公开
    Heat resisting metal tube and method for manufacturing same 有权
    Verfahren zum Herstellen vonhitzbeständigenmetallischen Rohren und hergestellte Rohre

    公开(公告)号:EP1043084A2

    公开(公告)日:2000-10-11

    申请号:EP00107598.5

    申请日:2000-04-07

    IPC分类号: B21C37/00 B23K10/02

    摘要: A multi-layered heat resistant metal tube is disclosed. This tube has excellent anti-coking characteristics and is suitable for use under the conditions where carbon tends to deposit and accumulate thereon due to contacting with hydrocarbons at a high temperature. The tube is made by forming weld-mounted overlaid layer of a Cr-Ni-Mo alloy by building-up welding over the inner surface and/or the outer surface of a substrate tube made of a heat resistant metal. The Cr-Ni-Mo alloy consists essentially of, by weight %, Cr: 36-49 wt%, Ni: 35-63 wt% and Mo: 0.5-5 wt%. Building-up welding is preferably carried out by PPW (Plasma Powder Welding) in which the filler metal is supplied in the form of powder.

    摘要翻译: 公开了一种多层耐热金属管。 该管具有优异的抗焦化特性,适用于在高温下与碳氢化合物接触的碳倾向于沉积和积聚的条件下使用。 该管通过在由耐热金属制成的衬底管的内表面和/或外表面上堆积焊接形成焊接安装的Cr-Ni-Mo合金叠层而制成。 Cr-Ni-Mo合金基本上由Cr:36-49wt%,Ni:35-63wt%,Mo:0.5-5wt%的重量%组成。 堆焊优选通过以粉末形式供给填充金属的PPW(等离子体粉末焊接)进行。