公开(公告)号：EP1170388A4

公开(公告)日：2004-03-24

申请号：EP00981824

申请日：2000-12-19

申请人： NIPPON KOKAN KK ,  SONY CORP

发明人： KODAMA SATOSHI ,  SUGIHARA REIKO ,  MATSUOKA HIDEKI ,  TAMAKA YASUSHI ,  HIRATANI TATSUHIKO ,  TAHARA KENJI ,  MITSUZUKA KENICHI ,  TAKAYANAGI KENICHERO ,  OKADA MASAMICHI ,  KATO HIROAKI ,  SATO CHOHACHI

IPC分类号： C21D8/02 ,  C21D8/12 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  H01J9/14 ,  H01J29/07

CPC分类号： C22C38/04 ,  C21D8/0236 ,  C21D8/1233 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/12 ,  H01J9/142 ,  H01J2229/0733

摘要： A method for producing a steel sheet for a tension mask which comprises the steps of hot rolling a steel having the chemical composition in wt.%: C: less than 0.1 %, Si: 0.05 % or less, Mn: 0.4 to 2 %, P: 0.03 % or less, S: 0.03 % or less, sol.Al: 0.01 % or less, N: 0.01 % or more, balance: substantially Fe, cold rolling the hot rolled steel sheet followed by annealing, and subjecting the resulting steel sheet to a secondary cold rolling at a reduction in thickness of 35 % or more. A steel sheet produced by the use of the above method exhibits excellent resistance to creep in blackening processing and also has an excellent magnetic shielding property such that it exhibits a non-hysteresis magnetic permeability of 3400 or more at a DC bias magnetic field of 0.35 Oe, and thus causes no color divergence when used for a tension mask.

公开(公告)号：EP1134297A4

公开(公告)日：2006-05-24

申请号：EP00949970

申请日：2000-08-03

申请人： NIPPON KOKAN KK ,  SONY CORP

发明人： HIRATANI TATSUHIKO ,  MATSUOKA HIDEKI ,  TANAKA YASUSHI ,  SUGIHARA REIKO ,  SATO CHOHACHI ,  KATO HIROAKI ,  OKADA MASAMICHI

IPC分类号： C23C14/40 ,  C21D8/02 ,  C21D8/12 ,  C21D9/46 ,  C22C38/00 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  H01F1/16 ,  H01J29/87 ,  H01J37/32 ,  H01J37/34 ,  H01J29/07

CPC分类号： C21D8/1233 ,  C21D8/0236 ,  C21D8/1272 ,  C21D9/46 ,  C22C38/004 ,  C22C38/04 ,  H01F1/16 ,  H01J29/87 ,  H01J2229/87

摘要： A steel sheet for a heat shrink band having a non-hysterisis magnetic permeability in a magnetic field of 0.35 Oe of 15000 or more and a yield stress of 24 kgf/mm or greater. The steel sheet for a heat shrink band can be produced by a method comprising a step of subjecting a steel containing C in an amount of 0.01 to 0.15 wt % to a hot or cold rolling, a step of annealing the rolled product at 650 to 900 DEG C, and subjecting the annealed product to temper rolling at a draft of 1.5 % or less. The steel sheet for a heat shrink band can be used for producing a cathode-ray tube which is almost free from the occurrence of color slippage and does not suffer the deformation of its panel face.

摘要翻译： 本发明的热收缩带用钢板在0.35Oe时的磁滞磁导率为15000以上，屈服应力为24kgf / mm 2以上。 钢板可以通过以下方法制造：包括以下步骤：热轧和/或冷轧含有0.01至0.15重量％C的钢; 在650〜900℃的温度下对轧制钢板进行退火; 以1.5％以下的压下率对退火后的钢板进行回火处理。 由钢板制成的CRT导致极少的颜色偏差，并且实际上没有面板表面的变形。