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    PROCESS FOR PRODUCING ALLOYED HOT-DIP ZINC-COATED STEEL SHEET SATISFACTORY IN PROCESSABILITY, NON-POWDERING PROPERTY, AND SLIDING PROPERTY
    1.
    发明公开
    PROCESS FOR PRODUCING ALLOYED HOT-DIP ZINC-COATED STEEL SHEET SATISFACTORY IN PROCESSABILITY, NON-POWDERING PROPERTY, AND SLIDING PROPERTY 有权
    合金业务部门方法热镀锌钢板令人满意的加工，NICHTPULVERISIERUNGSEIGENSCHAFT和滑翔

    公开(公告)号：EP2009130A1

    公开(公告)日：2008-12-31

    申请号：EP07740935.7

    申请日：2007-03-28

    申请人： Nippon Steel Corporation

    发明人： HAJI, Junji ,  KAWASAKI, Kaoru ,  ISHIZUKA, Kiyokazu ,  YAMADA, Teruaki

    IPC分类号： C23C2/06

    CPC分类号： C21D9/46 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/02 ,  C23C2/04 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28

    摘要： The present invention provides a method of production of hot dip galvannealed steel sheet with excellent workability compared with the Sendzimir method or non-oxidizing furnace method and further with excellent powdering or slidability, that is, a method of production of hot dip galvannealed steel sheet with excellent workability, powdering, and slidability characterized by processing a slab containing, by mass%, C: 0.01 to 0.12%, Mn: 0.05 to 0.6%, Si: 0.002 to 0.1%, P: 0.05% or less, S: 0.03% or less, sol. Al: 0.005 to 0.1%, and N: 0.01% or less and having a balance of Fe and unavoidable impurities by hot rolling, pickling, cold rolling, then annealing at 650 to 900°C, cooling to 250 to 450°C, holding at said temperature range for 120 seconds or more, then cooling to room temperature, pickling, preplating Ni or Ni-Fe without intermediate temper rolling, heating by 5°C/sec or more down to 430 to 500°C, galvanizing in a galvanization bath, wiping, then heating by a rate of temperature rise of 20°C/sec or more up to 460 to 550°C, not providing any soaking time or holding for soaking for less than 5 seconds, then cooling by 3°C/sec or more, and final temper rolling by a 0.4 to 2% elongation rate.

    摘要翻译： 本发明提供了与森吉米尔法或无氧化炉的方法，还具有优良的粉化或滑动性，相比生产热浸镀锌钢板的加工性优异的方法所做的是，生产热浸的方法镀锌钢板与 优异的加工性，粉化，并且可滑动通过处理板坯含表征，以质量％计，C：0.01〜12：12％以下，Mn：0.05〜0.6％以下，Si：0.002〜0.1％，P：0.05％以下，S：0.03％ 或以下，sol.Al：0.005〜0.1％，以及N：0.01％或以下，并且具有由热轧，酸洗，冷轧，然后在650退火至900℃的余量Fe和不可避免的杂质，冷却250吨 450℃，保持在所述温度范围内进行120秒以上，然后冷却到室温，酸洗，预镀Ni或Ni-铁没有中间调质轧制，加热5℃/秒以上下降到430〜500℃ 通过temperatu的速率镀锌在镀锌浴中，擦拭，然后加热 再以20℃/秒以上的上升到460至550℃，不提供任何浸泡时间或保持浸泡时间少于5秒，然后通过3℃/秒以上的冷却，并最终回火通过滚动 0.4至2％的伸长率。