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    VERY THIN 2-PIECE CONTAINER STEEL SHEET EXCELLENT IN PUCKER RESISTANCE AT NECK DIAMETER REDUCTION AND IN EARING AND PRODUCTION METHOD THEREFOR
    1.
    发明公开
    VERY THIN 2-PIECE CONTAINER STEEL SHEET EXCELLENT IN PUCKER RESISTANCE AT NECK DIAMETER REDUCTION AND IN EARING AND PRODUCTION METHOD THEREFOR 有权
    很瘦，2 PIECE与颈部的还原出色，压接耕种，性能与程序TANK钢板

    公开(公告)号：EP1088905A4

    公开(公告)日：2004-12-01

    申请号：EP00915519

    申请日：2000-04-13

    申请人： NIPPON STEEL CORP

    发明人： MURAKAMI HIDEKUNI ,  SUEHIRO MASAYOSHI ,  TANAKA SEIICHI ,  TAKESHITA TETSUROU ,  YOKOYA HIROKAZU ,  CHICHIKI TORU

    IPC分类号： C21D8/04 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C21D9/46

    CPC分类号： C21D8/0436 ,  C21D8/04 ,  C21D8/041 ,  C21D8/0426 ,  C21D8/0468 ,  C22C38/004 ,  C22C38/04 ,  C22C38/06

    摘要： The present invention provides a steel sheet for a two-piece can characterized in that the equation, (N existing as AlN)/(N content)>0.5, is satisfied, the average diameter of AlN is in the range of 0.01 to 0.10 mu m, the ratio of the number of AlN with a diameter of 0.01 mu m or less to the number of AlN with a diameter of at least 0.005 mu m is 10% or less, the average diameter of MnS is in the range of 0.03 to 0.40 mu m, and the ratio of the number of MnS with a diameter of 0.03 mu m or less to the number of MnS with a diameter of at least 0.005 mu m is 50% or less. Further, by specifying chemical composition, slab reheating temperature and coiling temperature in hot rolling, and re-cold-rolling reduction ratio after annealing, a high yield of steel sheet and good can formability can be achieved, the wrinkle generation rate during neck diameter reduction after drawing, ironing and stretching can be reduced and, further, good properties can be obtained even processed at a low annealing temperature. Thus the production of a highly efficient steel sheet for a two-piece can capable of averting heat-buckle is made possible. Further, buckling generation at an annealing process, earing generation during cup forming and wrinkle generation during the diameter reduction of a can body opening can be avoided. And thus a steel sheet for a two-piece can with a thickness of 0.19mm or less can be provided.

    摘要翻译： 本发明提供一种钢板的二片罐，其特征做了方程，（N现有以AlN的形式）/（N含量）> 0.5，满足时，AlN的平均直径在0点01的范围内至0时10亩 米，AlN的直径为0点01微米或更小，以AlN的直径为至少0005微米的数目的数目的比率为10％或更小，MnS的平均直径在0点03到的范围内 12点40分微米，和MnS的直径为0时03微米或更小，以MnS的直径为至少0005微米的数目的数目的比率为50％或更低。 此外，通过指定的化学组合物，板坯再加热温度和在热轧卷取温度，和再冷轧退火后的减速比，钢板和良好的罐成形性的高收率可以实现的，颈部直径减小时的褶皱发生率 绘图，熨烫和拉伸可以减少，并且进一步后，良好的性能可以得到即使在低温退火温度下处理。 因此，生产一种高效钢板的二片的可能避免热扣成为可能。 此外，直径缩小罐体开口的期间杯成型和皱纹产生期间屈曲代在在退火过程中，凸耳产生可以被避免。 因此能够提供一种钢板罐两片厚度为0.19毫米或更少。