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    • 6. 发明授权
    • Method of manufacturing microalloyed structural steel
    • 微合金化结构钢的制造方法
    • US06231696B1
    • 2001-05-15
    • US09276206
    • 1999-03-25
    • Karl-Ernst HensgerRobert F. Davis
    • Karl-Ernst HensgerRobert F. Davis
    • C21D109
    • C21D8/0215B21B1/466C21D8/0226C22C38/02
    • A method of manufacturing microalloyed structural steels by rolling in a CSP plant or compact strip production plant, wherein the cast slab strand is supplied divided into rolling lengths through an equalizing furnace to a multiple-stand CSP rolling train and is continuously rolled in the rolling train into hot-rolled wide strip, wherein the strip is cooled in a cooling section and is reeled into coils, and wherein, for achieving optimum mechanical properties, a controlled structure development by thermomechanical rolling is carried out as the thin slab travels through the CSP plant. For manufacturing high-strength microalloyed structural steels with a yield point of ≧480 MPa, the available strengthening mechanisms are utilized in a complex manner in order to achieve an optimum property complex with respect to strength and toughness of the structural steels, by carrying out, in addition to the thermomechanical rolling with the method steps according to U.S. patent application Ser. No. 09/095,338 filed Jun. 10, 1998, now U.S. Pat. No. 6,030,470, a further influence on the structure of the thin slabs by changing the material composition in order to achieve a specific mixed crystal strengthening by an increased silicon content and/or a complex mixed crystal strengthening by an increased content of copper, chromium, nickel.
    • 一种通过在CSP设备或紧凑型带材生产设备中轧制制造微合金化结构钢的方法,其中铸造扁坯线材通过均化炉被分成轧制长度到多台式CSP轧制机组,并且在轧制列车 进入热轧宽带,其中带材在冷却部分中冷却并卷成线圈,并且其中为了获得最佳的机械性能,当薄板坯穿过CSP设备时,通过热机械轧制进行受控结构的开发 。 为了制造屈服点> 480MPa的高强度微合金结构钢,为了通过实施结构钢的强度和韧性达到最佳性能复合物,以复杂的方式使用可用的强化机理 ,除了根据美国专利申请Ser。的方法步骤的热机械轧制。 1998年6月10日提交的No.09 / 095,338,现为美国专利No. 通过改变材料组成以通过增加的硅含量和/或通过增加铜,铬等的增加的混合晶体强化来实现特定的混晶化强化,进一步影响薄板坯的结构, 镍。