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    COOLING DEVICE,MANUFACTURING METHOD, AND MANUFACTURING LINE FOR HOT ROLLED STEEL BAND
    2.
    发明公开
    COOLING DEVICE,MANUFACTURING METHOD, AND MANUFACTURING LINE FOR HOT ROLLED STEEL BAND 无效
    KÜHLVORRICHTUNG，HERSTELLUNGSVERFAHREN UND HERSTELLUNGSSTRASSEFÜRWARMGEWALZTES STAHLBAND

    公开(公告)号：EP1527829A4

    公开(公告)日：2006-02-15

    申请号：EP02760588

    申请日：2002-08-08

    申请人： JFE STEEL CORP

    发明人： FUJIBAYASHI AKIO ,  SASAKI MASATO ,  HINO YOSHIMICHI ,  WATANABE ATSUSHI

    IPC分类号： B21B39/00 ,  B21B39/10 ,  B21B45/02 ,  C21D1/667 ,  C21D8/02 ,  C21D9/573

    CPC分类号： C21D1/667 ,  B21B45/0218 ,  B21B45/0233 ,  B21B45/0281 ,  C21D1/60 ,  C21D8/0263 ,  C21D9/573

    摘要： A hot rolled steel band cooling device, comprising an upper surface cooling means installed on the upper surface side of a hot rolled steel band carried by carrier rolls after hot rolling to cool the upper surface of the steel band and a lower surface cooling means installed on the lower surface side of the hot rolled steel band to cool the lower surface of the steel band, each of the cooling means further comprising a protective member having at least one cooling water passing hole bored at a position in proximity to the surface of the hot rolled steel band, at least one cooling water header disposed on the opposite side of the hot rolled steel band through the protective member, and cooling water injection nozzles projectedly fitted to the cooling water headers and injecting cooling water generally vertically to the surface of the hot rolled steel band through the cooling water passing holes, the cooling water injection nozzles functioning as a hot rolled steel band cooling device having nozzle tips set at a position away from the surface of the protective member opposed to the hot rolled steel band in the direction so as to be separated from the hot rolled steel band, whereby the hot rolled steel band after hot rolling can be stably carried, and uniformly and rapidly cooled.

    摘要翻译： 一种用于热轧钢带的冷却装置，包括设置在转印辊上转移的热轧钢带上方的顶表面冷却装置; 以及设置在所述热轧钢带的下方的底面冷却装置，所述顶面冷却装置和所述底面冷却装置中的每一个包括具有至少一个冷却水通过孔的保护构件; 至少一个冷却水集管，与所述保护部件分离的所述热轧钢带相对; 以及从冷却水集管部突出的冷却水喷射喷嘴，其特征在于，所述冷却水喷射喷嘴的前端比所述保护部件的与所述热轧钢带相对的面相对配置得远离所述热轧钢带。

    CONVERTER OXYGEN BLOWING METHOD AND UPWARD BLOWING LANCE FOR CONVERTER OXYGEN BLOWING
    3.
    发明公开
    CONVERTER OXYGEN BLOWING METHOD AND UPWARD BLOWING LANCE FOR CONVERTER OXYGEN BLOWING 有权
    SAUERSTOFFBLASVERFAHREN UNDAUFWÄRTSBLASENDELANZEFÜRSAUERSTOFFBLASKONVERTER

    公开(公告)号：EP1340823A4

    公开(公告)日：2005-03-02

    申请号：EP01996630

    申请日：2001-11-15

    申请人： JFE STEEL CORP

    发明人： SUMI IKUHIRO ,  KIKUCHI YOSHITERU ,  KAWABATA RYO ,  WATANABE ATSUSHI ,  AKAI SHINICHI ,  KOHIRA SATOSHI

    IPC分类号： C21C5/32 ,  C21C5/46

    CPC分类号： C21C5/4606

    摘要： A converter oxygen blowing method capable of blowing oxygen by using upward blowing lance having a De Laval Nozzle fitted to the tip thereof, wherein the De Laval Nozzle comprises a nozzle back pressure P0 (kPa) meeting the requirement of an expression P0=Fhs/(0.00465.Dt ), where an acid feed rate for each rubber nozzle hole determined by the acid feed rate Fs (Nm /hr) in the high carbon area of a peak decarbonizing period is Fhs (Nm /hr) and a throat diameter is Dt (mm), and the outlet diameter (De) of the De Laval Nozzle meets the requirement of the expression De = 0.23 x Dt /{(Pe/P0) x [1-(Pe/P0) ] }, where a nozzle back pressure is P0 (kPa), atmospheric pressure is Pe (kPa), and the throat diameter is Dt (mm).

    摘要翻译： 在转炉中吹氧的方法使用在其尖端上安装有拉瓦尔喷嘴的顶吹喷枪。 Laval喷嘴具有满足公式Po = Fhs /（0.00465.Dt <2>）的喷嘴Po（kPa）的背压，相对于每秒的氧气流量Fhs（Nm 3 / hr） 拉瓦尔喷嘴的孔由氧气流量Fs（Nm 3 / hr）确定。 处于脱碳峰的高碳区域和喉直径Dt（mm）。 拉伐尔喷嘴的出口直径De相对于喷嘴的背压Po（kPa），环境压力Pe（kPa）和喉部直径Dt（mm）满足下式。 äÜüüüüüüääääääääääääääääääääääääää