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    Method for producing low carbon-equivalent rolled steel shapes by controlled rolling
    1.
    发明公开
    Method for producing low carbon-equivalent rolled steel shapes by controlled rolling 失效
    通过控制轧制生产低碳等效轧制钢的方法。

    公开(公告)号：EP0609556A3

    公开(公告)日：1996-09-04

    申请号：EP93120841.7

    申请日：1993-12-23

    申请人： NIPPON STEEL CORPORATION

    发明人： Yamamoto, Kohichi, c/o Nippon Steel Corporation ,  Takeshima, Yasushi, c/o Nippon Steel Corporation ,  Inagaki, Akira, c/o Nippon Steel Corporation ,  Oda, Naoki, c/o Nippon Steel Corporation

    IPC分类号： C21D8/00

    CPC分类号： C21D9/0068 ,  B21B1/088 ,  B21B2045/0221 ,  C21D8/00 ,  C21D2221/00 ,  H01L2224/2919 ,  H01L2924/0665 ,  H01L2924/00

    摘要： A method for producing a steel section by a rolling process including a rough rolling step, an intermediate rolling step and a finishing rolling step. The intermediate rolling step comprises water-cooling the flange portion of the rough-rolled steel section between rolling passes in the intermediate rolling step to cool the surface layer of the flange to a temperature not higher than 750°C, and rolling the flange portion during recuperation of the surface layer of the flange at least one time between the rolling passes with a total draft not less than 20% and at an average rolling temperature not higher than 950°C and, after the finishing rolling step the outer surface of the flange is cooled at a cooling rate ranging from 0.5 to 10°C/sec depending on the thickness of the flange. Also the carbon equivalent of the steel is controlled. The advantage is that steel sections of various contours and dimensions can be produced from minimized varieties of steel compositions.

    摘要翻译： 一种通过包括粗轧步骤，中间轧制步骤和精轧步骤的轧制方法生产钢部分的方法。 中间轧制步骤包括在中间轧制步骤的轧制道次之间对粗轧部分的凸缘部分进行水冷却，以将法兰的表面层冷却到不高于750℃的温度，并且在 在轧制道次之间的至少一次的时间内，使总法线的总压力不低于20％，平均轧制温度不高于950℃，并且在精轧步骤之后，凸缘的外表面 根据凸缘的厚度以0.5至10℃/秒的冷却速率冷却。 钢的碳当量也受到控制。 优点是可以从最小化的钢组合物品种生产各种轮廓和尺寸的钢部分。

    Method for producing low carbon-equivalent rolled steel shapes by controlled rolling
    3.
    发明公开
    Method for producing low carbon-equivalent rolled steel shapes by controlled rolling 失效
    一种用于生产具有由控制轧制低Kohlenstoffequivalent由钢制成的型材的方法。

    公开(公告)号：EP0609556A2

    公开(公告)日：1994-08-10

    申请号：EP93120841.7

    申请日：1993-12-23

    申请人： NIPPON STEEL CORPORATION

    发明人： Yamamoto, Kohichi, c/o Nippon Steel Corporation ,  Takeshima, Yasushi, c/o Nippon Steel Corporation ,  Inagaki, Akira, c/o Nippon Steel Corporation ,  Oda, Naoki, c/o Nippon Steel Corporation

    IPC分类号： C21D8/00

    CPC分类号： C21D9/0068 ,  B21B1/088 ,  B21B2045/0221 ,  C21D8/00 ,  C21D2221/00 ,  H01L2224/2919 ,  H01L2924/0665 ,  H01L2924/00

    摘要： A method for producing a steel section by a rolling process including a rough rolling step, an intermediate rolling step and a finishing rolling step. The intermediate rolling step comprises water-cooling the flange portion of the rough-rolled steel section between rolling passes in the intermediate rolling step to cool the surface layer of the flange to a temperature not higher than 750°C, and rolling the flange portion during recuperation of the surface layer of the flange at least one time between the rolling passes with a total draft not less than 20% and at an average rolling temperature not higher than 950°C and, after the finishing rolling step the outer surface of the flange is cooled at a cooling rate ranging from 0.5 to 10°C/sec depending on the thickness of the flange. Also the carbon equivalent of the steel is controlled.
    The advantage is that steel sections of various contours and dimensions can be produced from minimized varieties of steel compositions.

    摘要翻译： 一种用于生产由一个轧制工序的钢部件，其包括粗轧工序中，在中间轧制步骤和一个精轧工序。 中间轧制步骤包括水冷粗轧钢部的凸缘部之间的中间轧制步骤轧制转到凸缘的表面层冷却到温度不高于750℃，并且在轧制凸缘部 凸缘轧制之间的至少一个时间的表面层的再生通过用不低于20％的总压下，在平均轧制温度不高于950℃，并且在精轧工序后的凸缘的外表面 的冷却速度为0.5〜10℃/秒取决于凸缘部的厚度被冷却。 因此，碳当量钢的控制。 其优点是做各种轮廓和尺寸的钢型材可以从钢材品种最小化的组合物的制备。

    Process and apparatus for producing thin-webbed H-beam steel
    6.
    发明公开
    Process and apparatus for producing thin-webbed H-beam steel 失效
    Verfahren und Vorrichtung zum HerstellenstählernerDoppel-T-TrägermitdünnemSteg。

    公开(公告)号：EP0462783A2

    公开(公告)日：1991-12-27

    申请号：EP91305475.5

    申请日：1991-06-18

    申请人： NIPPON STEEL CORPORATION

    发明人： Inagaki, Akira, c/o Nippon Steel Corporation ,  Kurokawa, Masao, c/o Nippon Steel Corporation ,  Hasegawa, Hiroyuki, c/o Nippon Steel Corporation ,  Ishibashi, Toshihiro, Nippon Steel Corp. Plant Eng ,  Hadano, Hiroaki, Nippon Steel Corp. Plant Eng. ,  Hioki, Takeshi, c/o Nippon Steel Corporation ,  Toriyama, Yoshimi, c/o Nippon Steel Corporation ,  Fujita, Kazuo, c/o Nippon Steel Corporation ,  Takeshima, Yasushi, c/o Nippon Steel Corporation ,  Wakatsuki, Teruyuki, c/o Nippon Steel Corporation ,  Horiuchi, Yasushi, c/o Nippon Steel Corporation

    IPC分类号： C21D9/00 ,  C21D8/00

    CPC分类号： C21D8/00 ,  C21D9/0068

    摘要： A process for producing a thin-webbed H-beam steel having a web thinner than flanges, which comprises the steps of: forcibly water cooling the outer surface of the flanges during an intermediate hot rolling prior to a final hot rolling, so that the flange outer surfaces are cooled to a temperature of 700°C or lower; terminating the forcible water cooling during the intermediate hot rolling so that the flange outer surfaces are returned to a temperature higher than 700°C; repeating the forcible water cooling and the termination thereof during the intermediate hot rolling to refine the microstructure of the flange surface to a predetermined depth from the surface; final-hot rolling the intermediate-hot rolled H-beam steel; and forcibly water cooling the flanges of the final-hot rolled H-beam steel immediately after the completion of the hot rolling, in a manner such that either the cooling time is not longer than an upper limit or the difference between the flange and the web temperatures upon completion of the cooling is not less than a lower limit, within which upper and lower limits the wavy web does not occur during the cooling, and such that either the cooling time is not less than a lower limit or the difference between the flange and the web temperatures upon completion of the cooling is not more than an upper limit, within which lower and upper limits a thermal stress, generated in the web during air cooling to room temperature, does not exceed a buckling strength of the web, the upper and lower limits being predetermined with respect to the size of H-beam and the density of the coolant water quantity. An apparatus for carrying out the process is also disclosed.

    摘要翻译： 一种用于制造具有比法兰更薄的网的薄网H型梁钢的方法，其包括以下步骤：在最终热轧之前的中间热轧期间强制水冷凸缘的外表面，使得凸缘 外表面冷却至700℃以下; 在中间热轧期间终止强制水冷却，使得凸缘外表面返回到高于700℃的温度; 在中间热轧期间重复强制水冷却和终止，以将凸缘表面的微结构从表面细化到预定的深度; 最终热轧中间热轧H型钢钢; 并且在热轧结束后立即强制地冷却最终热轧H型钢的凸缘，以使得冷却时间不长于上限或凸缘与网之间的差 在冷却结束时的温度不低于下限，在下限中，在冷却期间不会发生波状卷筒纸，并且冷却时间不低于下限或凸缘之间的差 冷却结束时的卷筒纸温度不高于上限，在空气冷却至室温的情况下，纸幅中产生的热应力的下限和上限不超过纸幅的屈曲强度，上限 并且相对于H型梁的尺寸和冷却水量的密度预定下限。 还公开了一种用于执行该过程的装置。