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    • 2. 发明专利
    • Method for predicting deformation resistance of rolling material and frictional coefficient between roll and rolling material in tandem cold rolling mill, and tandem cold rolling method
    • 用于预测轧制材料中的耐变形性和在轧制冷轧机中轧制材料之间的摩擦系数的方法,以及TANDEM冷轧方法
    • JP2006122980A
    • 2006-05-18
    • JP2004316416
    • 2004-10-29
    • Jfe Steel KkJfeスチール株式会社
    • KIJIMA HIDEONAGAI HAJIMEOKADA KAZUHITO
    • B21B37/00
    • PROBLEM TO BE SOLVED: To make it possible to set a roll gap even when a plate thickness meter is not arranged between successively arranged two rolling mills. SOLUTION: First, the deformation resistance and the frictional coefficient between the roll and the rolling material in rolling the rolling material by means of successively arranged two rolling mills is predicted for every rolling mill by calculation using a prediction formula. Next, the actual deformation resistance and the actual frictional coefficient are calculated backward based on the actual values of the tension on the input and output sides of the respective rolling mills, the actual values of the rolling load and the forward slip ratio, the actual values of the plate thickness at the inlet side of the upstream side rolling mill and the outlet side of the downstream side rolling mill, the assumed value of the plate thickness of the rolling material between both rolling mills. Next, a deformation resistance learning factor and a friction coefficient learning factor are defined as the ratio of the actual deformation resistance and actual frictional coefficient to the predicted deformation resistance and frictional coefficient. Finally, the deformation resistance and the frictional coefficient for the same kind of the rolling material at the next rolling time are predicted as the predicted values multiplied by the deformation resistance learning factor and the friction coefficient learning factor. In this case, the plate thickness between the successively arranged two rolling mills is determined such that the deformation resistance learning factor in the successively arranged two rolling mills converges within a certain error range. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:即使在连续布置的两个轧机之间没有布置板厚计时,也可以设定辊间隙。 解决方案:首先,通过使用预测公式的计算,预测通过连续布置的两台轧机轧制轧制材料中的轧辊和轧制材料之间的变形阻力和摩擦系数。 接下来,实际变形阻力和实际摩擦系数根据各轧机的输入侧和输出侧的张力的实际值,轧制负荷的实际值和向前滑移率,实际值 在上游侧轧机的入口侧的板厚度和下游侧轧机的出口侧的轧制材料的板厚的假定值。 接下来,变形阻力学习因子和摩擦系数学习因子被定义为实际变形阻力和实际摩擦系数与预测的变形阻力和摩擦系数的比。 最后,预测与下一个轧制时相同种类的轧制材料的变形阻力和摩擦系数作为预测值乘以变形阻力学习因子和摩擦系数学习因子。 在这种情况下,连续布置的两台轧机之间的板厚确定为连续布置的两台轧机中的变形阻力学习因子在一定误差范围内收敛。 版权所有(C)2006,JPO&NCIPI
    • 4. 发明专利
    • Dull roll for cold-rolling metallic sheet and its manufacturing method
    • 冷轧金属片及其制造方法
    • JP2005193248A
    • 2005-07-21
    • JP2003435480
    • 2003-12-26
    • Jfe Steel KkJfeスチール株式会社
    • KIJIMA HIDEOYAMASHITA MICHIOOGIMOTO SHOZOTACHIBANA KIYOSHI
    • B21B27/00C25D5/14C25D7/00
    • PROBLEM TO BE SOLVED: To provide a dull roll for cold-rolling a metallic sheet with which the desired surface property of the roll is obtained in a short time and simply, besides, the variation in the surface roughness of the roll caused by the rolling distance is small and the basic unit of the roll is improved.
      SOLUTION: This dull roll for cold rolling has chromium plated layer composed of an upper layer and a lower layer on the surface of a base roll the Vickers hardness of which is ≥ 600, the Vickers hardness HV 0.025 of the upper layer and the lower layer of the chromium plated layer are respectively ≥ 850 and 650-950 and the surface of the chromium plated layer is ≥ 0.3μm in arithmetic mean roughness Ra and ≥ 200 in the number PPI of peaks per the length of 1 in.. By this manufacturing method of the dull roll for cold rolling, a first plated layer which is ≥ 0.35 in the arithmetic mean roughness Ra and ≥ 230 in the number PPI of peaks per the length of 1 in. is formed on the surface of the base roll which is ≥ 0.05-2.0 μm in the arithmetic mean roughness Ra and a second plated layer which is ≥ 0.3 μm in the arithmetic mean roughness Ra and ≥ 200 in the number PPI of peaks per the length of 1 in. is further formed.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了在短时间内简单地提供用于冷轧具有期望的辊的表面性能的金属板的平滑辊,此外,辊的表面粗糙度的变化导致 通过滚动距离小,辊的基本单位提高。 解决方案:这种用于冷轧的钝辊具有由维氏硬度≥600的基辊表面上的上层和下层组成的镀铬层,上层的维氏硬度HV 0.025和 铬镀层的下层分别为≥850和650-950,并且镀层的表面的算术平均粗糙度Ra为≥0.3μm,峰值的PPI数量为≥200时,长度为1。 通过这种用于冷轧的钝辊的制造方法,在基底的表面上形成在算术平均粗糙度Ra为≥0.35的第一镀层和每英寸1英寸长度的峰值数PPI≥230的第一镀层 算术平均粗糙度Ra为0.05〜2.0μm的辊,算术平均粗糙度Ra为0.3μm以上的第2镀层,在1英寸长度的峰值数PPI为≥200。 版权所有(C)2005,JPO&NCIPI
    • 7. 发明专利
    • Tandem cold rolling mill and cold rolling method for extremely thin steel sheet using the same
    • 使用它的超薄薄钢板的冷轧轧机和冷轧方法
    • JP2004001004A
    • 2004-01-08
    • JP2002156574
    • 2002-05-30
    • Jfe Steel KkJfeスチール株式会社
    • KIJIMA HIDEOYAMASHITA MICHIOKITAHAMA MASANORIYAMADA YASUHIROKOBAYASHI MAKOTO
    • B21B1/22B21B27/00B21B27/02
    • PROBLEM TO BE SOLVED: To provide a tandem cold rolling mill in which the surface quality of a steel sheet can be improved and in which longitudinal buckling can be controlled, and also to provide a cold rolling method using this rolling mill.
      SOLUTION: This rolling mill is a three-stand type tandem cold rolling mill in the first stand of which a work roll is incorporated that is formed, on the roll barrel surface layer, a chrome-plated layer having a roughly partially spherical projection with a surface roughness Ra of 0.3-1.5 μm and an Hv of 1,000 or above, and in the second and third stand of which a cylindrically ground work roll is incorporated. In addition, annealing is performed after the first cold rolling and then, the second cold rolling is performed using the tandem cold rolling mill.
      COPYRIGHT: (C)2004,JPO
    • 待解决的问题:提供一种可以提高钢板表面质量并且可以控制纵向屈曲的串联冷轧机,并且还提供使用该轧机的冷轧方法。 < P>解决方案:该轧机是在第一机架中的三台式串列式冷轧机,其中装有工作辊,其在辊筒表面层上形成具有大致部分球形的镀铬层 表面粗糙度Ra为0.3-1.5μm,Hv为1,000以上的突起,在其第二和第三支架中并入有圆柱形地面工作辊。 此外,在第一次冷轧后进行退火,然后使用串联式冷轧机进行第二次冷轧。 版权所有(C)2004,JPO
    • 9. 发明专利
    • Roll for rolling metallic plate
    • 滚动金属板
    • JP2006122978A
    • 2006-05-18
    • JP2004316268
    • 2004-10-29
    • Jfe Steel KkJfeスチール株式会社
    • KIJIMA HIDEOSOTANI YASUHIRO
    • B21B27/00B21B27/02
    • PROBLEM TO BE SOLVED: To provide a roll for rolling a metallic plate, which roll can efficiently carry out the rolling process at a high speed by reducing the plate crown and the poor shape quality by suppressing the generation of the thermal crown and the processing troubles, such as the waviness of a rolling plate during rolling. SOLUTION: Because the roll for rolling the metallic plate has an outer layer 1 made of a ferrous material and an inner layer 2 made of a cemented carbide, the heat conducted to the inside of the roll is distributed in the axial direction of the roll by means of the cemented carbide layer having a large coefficient of thermal conductivity, and the distribution of the thermal expansion in the axial direction is nearly equalized, and the magnitude of the thermal expansion is reduced. As a result, the distribution of the thermal crown in the axial direction is nearly equalized and its magnitude is reduced. Therefore, the plate crown and the poor shape quality are reduced, and the generation of the processing troubles, such as the waviness of a rolling plate during rolling is suppressed, and the rolling can be efficiently carried out at a high speed. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供轧制金属板的辊,该辊可以通过抑制热冠的产生而减少板冠和差的形状质量来高效地高效地执行轧制过程,并且 处理故障,例如轧制时的轧制板的波纹。 解决方案:由于用于轧制金属板的辊具有由铁质材料制成的外层1和由硬质合金制成的内层2,所以传导到辊的内部的热量沿轴向方向分布 通过具有大的导热系数的硬质合金层和轴向上的热膨胀分布的辊几乎相等,并且热膨胀的大小减小。 结果,热冠的轴向分布几乎相等,其大小减小。 因此,板冠和形状品质差,减少轧制时的轧制板波纹的产生,能够高效地进行轧制。 版权所有(C)2006,JPO&NCIPI