利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

2 条记录 (耗时 0.007 秒)

    CONVERTER TOP-BLOW REFINING METHOD HAVING EXCELLENT DECARBURIZATION CHARACTERISTICS AND TOP-BLOW LANCE FOR CONVERTER
    1.
    发明公开
    CONVERTER TOP-BLOW REFINING METHOD HAVING EXCELLENT DECARBURIZATION CHARACTERISTICS AND TOP-BLOW LANCE FOR CONVERTER 失效
    方法鲜于A转换器从上方突出，ENTHOHLUNGSEIGENSCHAFTEN枪新鲜从上面

    公开(公告)号：EP0802262A4

    公开(公告)日：1998-04-22

    申请号：EP96900181

    申请日：1996-01-05

    申请人： NIPPON STEEL CORP

    发明人： KITAMURA SHINYA ,  NAITO KENICHIRO ,  YONEZAWA KIMITOSHI ,  SASAKAWA SHINJI ,  KIKUCHI SHIN ,  OGAWA YUJI ,  INOMOTO TAKEO

    IPC分类号： C21C5/32 ,  C21C5/46

    CPC分类号： C21C5/32 ,  C21C5/4606

    摘要： When decarburization blowing is carried out using a top-blow lance having at least one independent system of gas feed pipes; while the nozzle absolute secondary pressure Po of the lance of at least one system is kept in a range of 0.7 to 2.5 times the nozzle optimum expansion absolute secondary pressure P of the lance, the oxygen feed speed is changed by changing the nozzle absolute secondary pressure during the blowing by the system so that its maximum value is at least 1.1 times its minimum value. The top-blow refining method uses a top-blow lance having a slit-like nozzle which has two to ten shield portions disposed at a part of the opening at the end of the lance, has a concentric polygonal or circular cross section, has a ratio B/h of 10 to 225 where B (mm) is the long side of the openings separated by the shield portions and h (mm) is the short side, and has a value (B.h)R of 0.4 to 4 mm where R (mm) is the lance diameter R (mm), and one to six circular nozzles connected to a gas feed pipe independent of the slit-like nozzle and disposed inside the concentric polygon or circle.

    PREDICTION AND CONTROL OF QUALITY OF CONTINUOUSLY CAST ARTICLE
    2.
    发明公开
    PREDICTION AND CONTROL OF QUALITY OF CONTINUOUSLY CAST ARTICLE 失效
    QUALITÄTSVORHERSAGEUND KONTROLLE VON STRANGGUSSARTIKELN

    公开(公告)号：EP0774314A4

    公开(公告)日：1999-08-18

    申请号：EP96907730

    申请日：1996-03-29

    申请人： NIPPON STEEL CORP

    发明人： UMEZAWA KAZUSHIGE ,  TOH TAKEHIKO ,  TANAKA MAKOTO ,  TAKEUCHI EIICHI ,  INOMOTO TAKEO

    IPC分类号： B22D11/16

    CPC分类号： B22D11/16

    摘要： A mathematical model and a means for rapidly analyzing non-metallic inclusion in steel by means of, e.g., a cold crucible method are combined to simulatingly calculate the behavior of the non-metallic inclusion and thereby to predict the quality of a cast article on-line. Further, continuous casting process variables are controlled to suppress the amount of non-metallic inclusion in the cast piece to a minimum.

    摘要翻译： 通过例如冷坩埚方法快速分析钢中的非金属夹杂物的数学模型和方法被组合以模拟非金属夹杂物的行为，从而预测铸造件的质量， 线。 此外，控制连续铸造工艺变量以将铸件中的非金属夹杂物的量抑制到最小。