METHOD FOR PRODUCING A FLAT STEEL PRODUCT WHICH IS PROVIDED WITH A METALLIC PROTECTIVE LAYER BY MEANS OF HOT DIP COATING
    72.
    发明申请
    METHOD FOR PRODUCING A FLAT STEEL PRODUCT WHICH IS PROVIDED WITH A METALLIC PROTECTIVE LAYER BY MEANS OF HOT DIP COATING 审中-公开
    用于生产熔通过浸渍涂覆有金属层提供的保护扁钢产品

    公开(公告)号:WO2013007578A3

    公开(公告)日:2013-05-02

    申请号:PCT/EP2012063069

    申请日:2012-07-05

    IPC分类号: C23C2/02

    摘要: For a hot-dip coated, flat steel product, optimal wetting and adhesion of the hot dip coating are achieved by preoxidation in a DFF preheating furnace and humidification of the annealing atmosphere in a holding zone. First, the flat steel product, which is present at a temperature of 550 - 850 °C, is exposed to an oxidising atmosphere, which is introduced by injecting an oxygen-containing gas stream into the flame of a burner, for 1 - 15 s in a preoxidation section of the DFF furnace in order to form a covering FeO layer on the surface thereof, whereas a reduced or neutral atmosphere with respect to the steel surface prevails outside the preoxidation section in the DFF furnace. The flat steel product, which has been heated to a holding temperature of 600 - 1100 °C, is then annealed in a recrystallising manner under an FeO-reducing atmosphere, the dew point of which is held at -40 °C to +25 °C by the addition of moisture, cooled to a bath entry temperature of 420 - 780 °C under an atmosphere having

    摘要翻译: 在一个DFF预热和润湿退火气氛涂覆扁钢产品最佳的润湿性和热浸涂层的附着力通过预氧化的热浸可以在保持区域来实现。 - 在内1一个DFF的Voroxidationsabschnitt炉850℃的热扁钢产品 - 覆盖的FeO在暴露于15至吹含氧气流到燃烧器气氛的火焰,为此引入氧化其表面S上层,550是第一 形式,而在Voroxidationsabschnitts DFF炉其中存在相对于钢表面减少或中性气氛外。 加热扁钢产品降低FeO的气氛中进行退火再结晶,其露点,通过添加水分在-40保持℃至25℃下在1100℃,下一个<= 100%N2和露点 - 那么这样的600的保持温度为 从-80℃至-25℃,包括气氛浴进入温度420至780℃冷却并通过熔浴通过。

    CONTROL OF COATING OF MEMBERS
    79.
    发明申请
    CONTROL OF COATING OF MEMBERS 审中-公开
    成员的涂装控制

    公开(公告)号:WO2012083345A1

    公开(公告)日:2012-06-28

    申请号:PCT/AU2011/001628

    申请日:2011-12-19

    IPC分类号: C23C2/02 C23C2/06 C23C2/12

    CPC分类号: C23C2/06 C23C2/02 C23C2/40

    摘要: An in-line process is disclosed for galvanising an elongate member with a coating that comprises zinc and aluminium. The aluminium is in a range of 5-20 wt%. The process comprises cleaning and applying a flux that is free from alkali metal to an external surface of the member. The process also comprises drying the flux on the member and pre-heating the member. The process further comprises passing the pre-heated member through a bath comprising the coating of zinc and aluminium and then removing the coated member.

    摘要翻译: 公开了一种用包含锌和铝的涂层来镀锌细长构件的在线方法。 铝在5-20重量%的范围内。 该方法包括将不含碱金属的助熔剂清洗并施加到构件的外表面上。 该方法还包括干燥构件上的助熔剂并预加热构件。 该方法还包括使预热的构件通过包含锌和铝的涂层的浴,然后除去涂覆的构件。