公开(公告)号：EP0451874A3

公开(公告)日：1993-03-03

申请号：EP91105966.5

申请日：1991-04-15

申请人： HITACHI, LTD.

发明人： Kajiwara, Toshiyuki ,  Nishi, Hidetoshi ,  Sugiyama, Tokuji

IPC分类号： B21B13/14 ,  B21B28/04

CPC分类号： B21B28/04 ,  B21B13/142 ,  B21B2027/022

摘要： A 4-high-rolling mill includes a pair of upper and lower work rolls (1, 2), a pair of upper and lower backup rolls (21, 22) supporting the upper and lower work rolls, respectively, a roll bending device (11, 12) for applying a bending force to the upper and lower work rolls, and a roll shift device (9, 10, 16) for shifting the upper and lower work rolls in an axial direction of the work rolls. Each of the upper and lower work rolls has a curved initial crown portion (1a, 2a) formed on one side portion of a barrel of the work roll which is not less than a half of the length of the work roll barrel, and a substantially cylindrical initial crown portion (1b, 2b) formed on the remainder of the work roll barrel. The curve of the curved initial crown portion approximates to a curve represented by an expression of the "n"th order, (n ≧ 1.5), and the curved initial crown portions of the upper and lower work rolls are disposed oppositely relative to each other in the axial direction of the work rolls, and always disposed in overlapping relation to each other at at least a part thereof.

公开(公告)号：EP0400568A3

公开(公告)日：1993-01-27

申请号：EP90110143.6

申请日：1990-05-29

申请人： HITACHI, LTD.

发明人： Takakura, Yoshio ,  Kajiwara, Toshiyuki

IPC分类号： B21B13/14 ,  B21B37/00

CPC分类号： B21B13/14 ,  B21B3/00 ,  B21B37/38 ,  B21B2013/026

摘要： A five-high rolling mill includes upper and lower work rolls (1,2) of substantially the same diameter; upper and lower backup rolls (3,4) supporting the upper and lower work rolls (1,2) and having a larger diameter than that of the work rolls; an intermediate roll (5) located between one of the upper and lower work rolls and the associated backup roll and having a diameter larger than that of the work roll and smaller than that of the backup roll and a drum length larger than the maximum sheet width of a rolled material (6); work roll bending devices (10,11,12) provided on the respective roll ends of the upper and lower work rolls (1,2); and intermediate roll bending devices (13) provided on the roll ends of the intermediate roll (5). A skinpass rolling mill includes upper and lower work rolls (1,2) of substantially the same and large diameter; upper and lower backup rolls (3,4) supporting the work rolls (1,2), respectively; an intermediate roll (5) located between the upper work roll (1) and the upper backup roll (3) and having a diameter within a range between the diameters of the upper rolls; roll bending devices respectively provided on the roll ends of the intermediate roll (5); and roll bending devices respectively provided on the roll ends of the upper and lower work rolls (1,2), wherein the intermediate roll (5) has a larger drum length than the maximum sheet width of a rolled material (6) and smaller than the drum length of the work roll, and the roll bending devices for the lower work roll (2) are at least provided with a decrease bender mechanism. A multi-high rolling mill includes upper and lower work rolls (1,2) of substantially the same diameter and also a certain number of supporting rolls and a different number of supporting rolls for respectively supporting the work rolls (1,2) so that sections of the rolling mill above and below a rolled material (6) have sets of the rolls in different numbers; roll bending devices (13) installed on the supporting roll (5) directly supporting the work roll (1) in one of the roll sets having the larger number of the rolls; and roll bending devices (10,11) installed on the respective work rolls (1,2) of the upper and lower roll sets, wherein the supporting roll (5) in the one roll set having the larger number of the rolls, the work roll (1) in the roll set, and the work roll (2) in the other roll set having the smaller number of the rolls are controlled with control degrees of values gradually increasing in this order. A rolling method in a multi-high rolling mill is applied to a multi-high rolling mill including upper and lower work rolls of substantially the same diameter, upper and lower backup rolls supporting the work rolls, respectively, and an intermediate roll located between one of the upper and lower work rolls and the associated backup roll, wherein roll bending devices installed on the intermediate roll and roll bending devices installed on the work roll in the roll set where the intermediate roll is disposed are all actuated to control a composite sheet of a rolled material over its entire width, and roll bending devices installed on the work roll which is directly supported by the backup roll are actuated to control the sheet crown of the rolled material at its side end portions, thereby performing both the composite shape control of the rolled material and the control of the widths of the side end portions of the rolled material which are not to be rolled.

公开(公告)号：EP0510713A1

公开(公告)日：1992-10-28

申请号：EP92107147.8

申请日：1992-04-27

申请人： HITACHI, LTD.

发明人： Kajiwara, Toshiyuki ,  Nishino, Tadashi ,  Watanabe, Tadayuki ,  Yoshimura, Yasutsugu ,  Funamoto, Takao

IPC分类号： B23K20/00 ,  B21B1/26

CPC分类号： B21B15/0085 ,  B21B1/26 ,  B21B1/46 ,  B23K20/028

摘要： A trailing end of a preceding bar is arranged slantingly by an angle ϑ relative to a succeeding bar such that the lower edge of the leading end face of the succeeding bar is vertically shifted from the lower edge of the trailing end face of the preceding bar with the leading end face of the succeeding bar abutting against the trailing end face of the preceding bar. After that, the succeeding bar is vertically depressed by applying a predetermined force. Since the trailing end face is inclined by ϑ relative to the leading end face, the depression causes a relative slide between surfaces of both the end faces and, at the same time, a pressure P is also produced by the wedge effect, the pressure P causing a compression force and a plastic deformation between both the end faces.

摘要翻译： 前一条的后端相对于后一条倾斜地设置角度θ，使得后一条的前端面的下边缘从前一条的后端面的下边缘垂直移位， 接下来的杆的前端面抵靠前一杆的后端面。 之后，通过施加预定的力垂直地压下后续的杆。 由于后端面相对于前端面倾斜θ，所以凹陷使得两个端面的表面之间相对滑动，并且同时也通过楔形效应产生压力P，压力P 在两个端面之间产生压缩力和塑性变形。

公开(公告)号：EP0490333A2

公开(公告)日：1992-06-17

申请号：EP91121155.5

申请日：1991-12-10

申请人： HITACHI, LTD.

发明人： Kinose, Ryohei ,  Kajiwara, Toshiyuki ,  Yoshimura, Yasutsugu

IPC分类号： B23D25/12

CPC分类号： B21B15/0085 ,  B21B15/0007 ,  B23D25/12

摘要： In a crop shear apparatus (26) disposed in a conveyance passage in which band steel (12) is conveyed from a first rolling mill to a second rolling mill of hot rolling equipment, the crop shear apparatus (26) including: at least one shear blade (50, 52) for shearing the band steel (12) in a widthwise direction conveyed from the first rolling mill to the second rolling mill; and a supporting mechanism for movably supporting the at least one shear blades (50, 52) in the widthwise direction of the band steel (12), wherein the at least one shear blade (50, 52) is present in a non-linear manner along the widthwise direction of the band steel (12) such that a projection quantity of the band steel (12) in the conveyance direction at a sheared end portion can be adjusted when the band steel (12) is sheared in a state where the blade (50, 52) has been moved in the widthwise direction of the band steel (12) and the shear blade (50, 52) is formed into a non-mirror-symmetrical shape on two side portions of a portion which corresponds to the center in the widthwise direction of the band steel (12), a projection quantity in at least one of the sheared front and rear end portions of the band steel (12) can be adjusted independently of a width of the band steel (12).

摘要翻译： 在作业剪切装置（26）中，所述作物剪切装置（26）设置在输送通道中，其中带钢（12）从第一轧机输送到热轧设备的第二轧机，所述作物剪切装置（26）包括：至少一个剪切 叶片（50,52），用于在从第一轧机输送到第二轧机的宽度方向上剪切带钢（12）; 以及用于在所述带钢（12）的宽度方向上可移动地支撑所述至少一个剪切刀片（50,52）的支撑机构，其中所述至少一个剪切刀片（50,52）以非线性方式存在 沿着带钢（12）的宽度方向，使带状钢（12）在剪切端部的输送方向上的突出量可以在带状钢（12）在叶片 （50,52）已经在带钢（12）的宽度方向上移动，并且剪切刀片（50,52）在对应于中心部分的部分的两侧部分上形成为非镜像对称形状 在带钢（12）的宽度方向上，带钢（12）的剪切前端部和后端部中的至少一方的突出量可以独立于带钢（12）的宽度进行调节。

公开(公告)号：EP0442645A3

公开(公告)日：1992-02-05

申请号：EP91300920.5

申请日：1991-02-05

申请人： HITACHI, LTD.

发明人： Takakura, Yoshio ,  Kimura, Tomoaki ,  Kajiwara, Toshiyuki ,  Sekiya, Teruo

IPC分类号： B21D1/02

CPC分类号： B21D1/02 ,  B21B37/68 ,  B21B39/14

摘要： A widthwise bend of an end of a hot-rolled elongate sheet-shaped metal product (1) is corrected while it is hot. The correction comprises simultaneously:
(i) holding the edges of the product (1) at at least two positions (12,13) longitudinally spaced along the product thereby to hold, at least laterally, a portion spaced from the bent end, and (ii)pushing the end portion laterally by means of a laterally moving member (14). The method may be performed while the product is continuously moving along a path. Both steps (i) and (ii) are performed by rollers rotatable about vertical axes.

公开(公告)号：EP0451874A2

公开(公告)日：1991-10-16

申请号：EP91105966.5

申请日：1991-04-15

申请人： HITACHI, LTD.

发明人： Kajiwara, Toshiyuki ,  Nishi, Hidetoshi ,  Sugiyama, Tokuji

IPC分类号： B21B13/14 ,  B21B28/04

CPC分类号： B21B28/04 ,  B21B13/142 ,  B21B2027/022

摘要： A 4-high-rolling mill includes a pair of upper and lower work rolls (1, 2), a pair of upper and lower backup rolls (21, 22) supporting the upper and lower work rolls, respectively, a roll bending device (11, 12) for applying a bending force to the upper and lower work rolls, and a roll shift device (9, 10, 16) for shifting the upper and lower work rolls in an axial direction of the work rolls. Each of the upper and lower work rolls has a curved initial crown portion (1a, 2a) formed on one side portion of a barrel of the work roll which is not less than a half of the length of the work roll barrel, and a substantially cylindrical initial crown portion (1b, 2b) formed on the remainder of the work roll barrel. The curve of the curved initial crown portion approximates to a curve represented by an expression of the "n"th order, (n ≧ 1.5), and the curved initial crown portions of the upper and lower work rolls are disposed oppositely relative to each other in the axial direction of the work rolls, and always disposed in overlapping relation to each other at at least a part thereof.

摘要翻译： 4辊轧机包括一对上下工件（1,2），分别支撑上下工作辊的一对上支承辊（21）和下支承辊（22,22），辊弯装置（11） ，21），用于向上下工作辊施加弯曲力;以及辊移装置（9,10,16），用于沿着工作辊的轴向移动上下工作辊。 上下工作辊中的每一个具有形成在工作辊的筒的一个侧部上的弯曲的初始冠部（1a，2a），其不小于工作辊筒的长度的一半，并且基本上 形成在工作辊筒的其余部分上的圆柱形初始冠部（1b，2b）。 弯曲的初始冠部的曲线近似于由“n”阶表示的曲线（n> / = 1.5），并且上下工作辊的弯曲的初始冠部相对于 彼此在工作辊的轴向上，并且在至少一部分上总是以重叠的关系设置。

公开(公告)号：EP0135133B1

公开(公告)日：1990-01-10

申请号：EP84109621.7

申请日：1984-08-13

申请人： HITACHI, LTD.

发明人： Kajiwara, Toshiyuki ,  Kimura, Tomoaki ,  Nihei, Mitsuo

IPC分类号： B21B1/02

CPC分类号： B23K13/00 ,  B21B15/0085

公开(公告)号：EP0115875B1

公开(公告)日：1989-05-24

申请号：EP84101332.9

申请日：1984-02-09

申请人： HITACHI, LTD.

发明人： Takakura, Yoshio ,  Abo, Ryo ,  Ishiyama, Isamu ,  Kajiwara, Toshiyuki ,  Higuchi, Tetsuya ,  Yamaguchi, Teruo ,  Mitsui, Hiromitsu ,  Furuzono, Yoshihisa ,  Hamada, Shunichi

IPC分类号： B65H20/26

CPC分类号： B65H20/26 ,  B65H2408/211

公开(公告)号：EP0026903B1

公开(公告)日：1986-01-02

申请号：EP80105897.5

申请日：1980-09-29

申请人： Hitachi, Ltd.

发明人： Kajiwara, Toshiyuki

IPC分类号： B21B31/18 ,  B21B37/08

CPC分类号： B21B13/142 ,  B21B27/02 ,  B21B31/18 ,  B21B37/42 ,  B21B2027/022 ,  B21B2269/04 ,  B21B2269/06 ,  B21B2269/16

公开(公告)号：EP0149247A2

公开(公告)日：1985-07-24

申请号：EP84116427.0

申请日：1984-12-28

申请人： HITACHI, LTD.

发明人： Takagi, Michimasa ,  Kajiwara, Toshiyuki ,  Sakanaka, Takao

IPC分类号： B21B13/14

CPC分类号： B21B13/145

摘要： A rolling mill has a housing (42), an upper work roll (43A) and a lower work roll (43B) adapted to cooperate in rolling a material therebetween, supporting rolls (46) disposed at the upper and lower sides of the upper and lower work rolls such as to vertically support and drive the work rolls, horizontal supporting rolls (49) disposed at a lateral side of the work rolls so as to support the work rolls from the lateral side in the direction of travel of the rolled material, and horizontal back-up rolls (48) disposed at a lateral side of the horizontal supporting rolls so as to back-up the horizontal supporting rolls The rolling mill further has a holding means (54) for rotatably holding the horizontal supporting rolls and the horizontal back-up rolls at both axial ends of these rolls, a first driving means (64) provided on the housing and mechanically connected to the holding means, the first driving means (64) being adapted to cause a movement of the holding means in the direction of travel of the material to be rolled and to impart to the work rolls desired pressing force acting in the direction of travel of the rolled material, a second driving means (66) provided on the housing and adapted to engage with a restraining means (66B) for restraining the position of the holding means such as to move the holding means (54) through the restraining means thus setting the work rolls at predetermined offset positions, and a guide means (58) provided on the face of the housing confronting the holding means and adapted to guide the movement of the holding member in the direction of travel of the rolled material. With this arrangement, it is possible to prevent any horizontal deflection of the work roll thus affording a highly precise crown and shape control on the rolled product, while facilitating the setting of the work rolls at a designated offset position, as well as replacement of the work rolls.

摘要翻译： 一种轧机具有壳体（42），上工作辊（43A）和下工作辊（43B），适于在其间滚动材料协同作用，支撑辊（46）设置在鞋面的上侧和下侧，以及 下工作辊，以便垂直地支撑和驱动工作辊，设置在工作辊的侧面的水平支撑辊（49），用于从轧制材料的行进方向的侧面支撑工作辊;以及 设置在水平支撑辊的侧面的水平支撑辊（48），以便支撑水平支撑辊。 轧机还具有用于在这些辊的两个轴向端部处可旋转地保持水平支撑辊和水平支撑辊的保持装置（54），设置在壳体上并机械连接到保持件的第一驱动装置（64） 装置，第一驱动装置（64）适于使保持装置沿待轧制材料的行进方向移动并赋予工作辊所需的沿轧制材料行进方向作用的按压力 第二驱动装置（66），设置在壳体上并且适于与限制装置（66B）接合以限制保持装置的位置，例如使保持装置（54）移动通过限制装置，从而将工作辊 在预定的偏移位置处设置有引导装置（58），所述引导装置（58）设置在与所述保持装置相对的所述壳体的所述面上并且适于引导所述保持构件沿所述滚动的马的行进方向的移动 terial。 通过这种布置，可以防止工作辊的任何水平偏转，从而在轧制产品上提供高度精确的表冠和形状控制，同时有助于将工作辊设置在指定的偏移位置，以及更换 工作卷。