Method for manufacturing thin cold rolled inner shield steel sheet with superior magnetic field shielding property
    1.
    发明授权
    Method for manufacturing thin cold rolled inner shield steel sheet with superior magnetic field shielding property 失效
    薄型冷轧内屏蔽钢板制造方法,具有优良的磁场屏蔽性能

    公开(公告)号:US06212928B1

    公开(公告)日:2001-04-10

    申请号:US09464683

    申请日:1999-12-16

    IPC分类号: B21B2706

    摘要: A method for manufacturing a thin cold rolled inner shield steel sheet for use in a braun tube is disclosed. With this method, a steel sheet with superior magnetic field shielding properties can be manufactured by carrying two steps of cold rolling without adding an expensive alloy element, and without using a special decarburizing facility such as OCA. The method includes the following steps. There is prepared a steel slab composed of, in wt %, 0.0025% or less of C, 0.05-0.25% of Mn, 0.05-0.15% of Si, 0.015 or less of Al, and a balance of Fe and other impurity elements. Then a hot rolling is carried out on the steel slab at a temperature of 910° C. or above. Then a first cold rolling is carried out, and a first annealing is carried out at above a recrystallization temperature. Then a second cold rolling is carried out at a reduction ratio of 25-45%.

    摘要翻译: 公开了一种制造用于布朗管中的薄冷轧内屏蔽钢板的方法。 通过这种方法,可以通过在不添加昂贵的合金元素的情况下进行冷轧的两个步骤,并且不使用诸如OCA的特殊脱碳设备来制造具有优异的磁场屏蔽性能的钢板。 该方法包括以下步骤。 制备了以重量%计,C:0.0025%以下,Mn:0.05〜0.25%,Si:0.05〜0.15%,Al:0.015以下,余量由Fe和其他杂质构成的钢坯。 然后在910℃以上的温度下对钢坯进行热轧。 然后进行第一次冷轧,在再结晶温度以上进行第一次退火。 然后以25-45%的压下率进行第二次冷轧。