Steel sheet used for color CRT mask frame and a manufacturing method for the steel sheet
    2.
    发明授权
    Steel sheet used for color CRT mask frame and a manufacturing method for the steel sheet 失效
    用于彩色CRT面罩框架的钢板和钢板的制造方法

    公开(公告)号:US06699334B2

    公开(公告)日:2004-03-02

    申请号:US09985131

    申请日:2001-11-01

    IPC分类号: C22C3812

    摘要: This invention provides a steel sheet for a mask frame which maintains a tension-type color CRT shadow mask under tension. The steel sheet has a steel composition consisting essentially of, in mass %, C: 0.03-0.30%, Si: at most 0.30%, Mn: 0.05-1.5%, P: at most 0.05%, S: at most 0.02%, Mo: 0.02-0.50%, V: 0.02-0.20%, Al: at most 0.10%, N: 0.0040-0.0200%, optionally one or two or more of Cu: at most 1.0%, Ni: at most 1.0%, Cr: at most 2.0%, W: at most 1.0%, B: at most 0.003%, Ti: at most 0.030%, and Nb: at most 0.030%, and a balance of iron and unavoidable impurities, with Al≦(7.0)N, and having a metal structure in which the ferrite grain size is at most 15 micrometers and the ferrite volume ratio is at most 90%. The steel sheet is manufactured by hot rolling of a slab having the above-described steel composition under the conditions of a finishing temperature of 820-950° C. and a coiling temperature of 400-700° C.

    摘要翻译: 本发明提供一种用于在张力下保持张力型彩色CRT阴罩的荫罩框架用钢板。 该钢板的组成基本上以质量%计含有C:0.03〜0.30%,Si:0.30%以下,Mn:0.05〜1.5%,P:0.05%以下,S:0.02%以下, Mo:0.02-0.50%,V:0.02-0.20%,Al:至多0.10%,N:0.0040-0.0200%,任选一种或两种以上的Cu:至多1.0%,Ni:至多1.0% :至多2.0%,W:最多1.0%,B:0.003%以下,Ti:0.030%以下,Nb:0.030%以下,剩余的铁和不可避免的杂质,Al )N,并且具有其中铁素体晶粒尺寸至多为15微米且铁素体体积比至多为90%的金属结构。 钢板通过在终轧温度为820-950℃,卷取温度为400-700℃的条件下热轧具有上述钢组成的板坯来制造。