-
公开(公告)号：US4086801A
公开(公告)日：1978-05-02
申请号：US782821
申请日：1977-03-30
申请人： Koe Nakajima , Kazuo Watanabe , Hideki Tokita
发明人： Koe Nakajima , Kazuo Watanabe , Hideki Tokita
摘要： A process for hot rolling an H-shaped metallic material from a workpiece of rectangular cross section which comprises reducing the workpiece in the width direction thereof while wedgewise knifing the opposing sides of the workpiece by means of a first pair of grooves formed in rolls of a vertical roll stand; reducing the workpiece in the width direction thereof while spreading the knifed sides by means of a second pair of grooves which may be formed in rolls of another vertical roll stand or in the rolls having said first pair of grooves; and subsequently rolling the workpiece to a required size by universal rolling mills. This process thus enables a starting material of a rectangular cross section to be employed instead of that of H-shaped cross section.
摘要翻译： 一种用于从矩形横截面的工件热轧H形金属材料的方法，该方法包括沿着宽度方向减少工件，同时沿着工件的相对侧面通过形成在辊 垂直卷架 通过可以形成在另一个垂直辊架的辊中或在具有所述第一对槽的辊中的第二对槽延伸刀片侧，同时在宽度方向上减小工件; 然后通过万能轧机将工件轧制成所需尺寸。 因此，该方法可以采用矩形横截面的起始材料而不是H形横截面。
-
公开(公告)号：US4407056A
公开(公告)日：1983-10-04
申请号：US335669
申请日：1981-12-30
申请人： Kazuo Watanabe , Hideki Tokita , Koe Nakajima
发明人： Kazuo Watanabe , Hideki Tokita , Koe Nakajima
CPC分类号： B21B1/0883 , B21J5/00 , Y10T29/49991
摘要： In making metal sections, starting material having a quadrangular cross-section is hot-forged into a blank resembling the desired product in cross-section, and the length of the piece is divided into sections of a given length. Then, the blank is hot-rolled into the product having the desired cross-section.
摘要翻译： 在制作金属部分时，具有四边形横截面的起始材料被热锻造成类似于所需产品的横截面，并且该片的长度被划分成给定长度的部分。 然后将坯料热轧成具有所需横截面的产品。
-
公开(公告)号：US4528834A
公开(公告)日：1985-07-16
申请号：US600282
申请日：1984-04-13
申请人： Koshiro Aoyagi , Yukio Noguchi , Koe Nakajima , Matsuo Ataka
发明人： Koshiro Aoyagi , Yukio Noguchi , Koe Nakajima , Matsuo Ataka
CPC分类号： B21B1/18
摘要： Bars and wire rods are rolled from billets or blooms in the disclosed process which includes a primary rolling step resulting in an intermediate material, a secondary rolling step and a heat treatment. The primary (first) rolling step includes rolling the billet or bloom steel material into an intermediate material at a mass flow rate to enable it to be maintained during the primary rolling within a temperature range corresponding to a predetermined deformation resistance level of the steel material. This predetermined deformation resistance level is selected so as to take advantage of an opportunity to save energy. The intermediate material resulting from primary rolling is coiled and its temperature is adjusted so as to maintain the intermediate material at a desired starting temperature for the secondary rolling step. The desired starting temperature for secondary rolling is related to a desired starting temperature for the heat treatment following the secondary rolling enabling heat treatment to be carried out in line.
摘要翻译： 在公开的方法中，棒材和线材从坯料或花纹中轧制，其包括产生中间材料的初步轧制步骤，二次轧制步骤和热处理。 主要（第一）轧制步骤包括以质量流量将坯料或坯料钢材轧制成中间材料，以使其能够在对应于钢材的预定变形阻力水平的温度范围内的一次轧制期间保持。 选择该预定的变形阻力水平以利用节省能量的机会。 由一次轧制得到的中间材料进行卷绕，并调节其温度，以便将二次轧制步骤的中间材料保持在期望的起始温度。 二次轧制的期望的起始温度与二次轧制之后的热处理所需的起始温度有关，使得能够进行热处理。
-
公开(公告)号：US4299109A
公开(公告)日：1981-11-10
申请号：US128924
申请日：1980-03-10
申请人： Hiromi Matsumoto , Toshio Kikuma , Koe Nakajima , Akira Ohnuki
发明人： Hiromi Matsumoto , Toshio Kikuma , Koe Nakajima , Akira Ohnuki
摘要： A rolling mill includes at least one roll carrying a sleeve loosely on the barrel, and a sleeve-supporting-and-guiding unit the restricting point of which, i.e. the point at which force for axially shifting or restricting the shifting of the sleeve is applied on the sleeve, is located somewhere along the second-half semi-circular portion of the sleeve as viewed in the rotational direction of a complete turn of the sleeve ending at the loading point where the sleeve and the associated roll are subjected to loading pressure. The mill has a powerful crown-controlling capacity for workpieces varying widths, and the sleeve-supporting-and-guiding unit is sufficiently durable to withstand high speed rolling for mass production.
摘要翻译： 一种轧机包括至少一个承载着筒体上的套筒的辊，以及套筒支承导向单元，其限制点即用于轴向移动或限制套筒移动的力被施加 在套筒的第二半半圆形部分的某处，当从套筒和相关联的辊承受加载压力的装载点处的整个套筒的整个转动方向观察时，该套筒位于某个地方。 该工具对于工件宽度变化具有强大的控制能力，并且套筒支撑和导向单元足够耐用以承受大规模生产的高速轧制。
-
公开(公告)号：US4111025A
公开(公告)日：1978-09-05
申请号：US841485
申请日：1977-10-12
申请人： Koe Nakajima , Hiromi Matumoto
发明人： Koe Nakajima , Hiromi Matumoto
CPC分类号： B21D3/05
摘要： This invention relates to a straightening mill for section steel, such as I-beams, channel steel, etc., particularly to a straightening mill for section steel, wherein as the section steel is straightened so called "end crook" at the tail end thereof is eliminated. The section steel is passed through a straightening mill which comprises a plurality of driving rollers and a plurality of driven rollers defining a pass line therebetween. The axes of the driving and driven rollers are staggered and, except for the first driving roller, each of the driving rollers is fixed relative to the pass line. The driven rollers are adjustable and by proper adjustment of the first driving roller relative to the pass line, end crook is reduced or eliminated.
-
6.发明授权
公开(公告)号：US4466842A
公开(公告)日：1984-08-21
申请号：US481453
申请日：1983-04-01
申请人： Hiroshi Yada , Yoshikazu Matsumura , Koe Nakajima
发明人： Hiroshi Yada , Yoshikazu Matsumura , Koe Nakajima
CPC分类号： C21D8/0226 , C22C38/04 , C21D2211/002 , C21D2211/005 , C21D2211/008
摘要： A novel hot-rolled ferritic steel composed of 70% or more of equiaxed ferrite grains having an ultra-fine grain size of 4 .mu.m or less. This steel is produced by a hot working at approximately the Ar.sub.3 point and by one or more passes of the hot working having a total reduction ratio of at least 75%. When a plurality of passes is carried out, the time between passes is less than one second. Due to hot working, dynamic transformation of austenite and/or dynamic recrystallization of ferrite takes place. The total reduction ratio may be at least 35% for a high purity steel.
摘要翻译： 由70μm以上的超细晶粒尺寸为4μm以下的等轴铁素体晶粒组成的新型热轧铁素体钢。 该钢通过大约Ar3点的热加工和通过一次或多次热加工的总压下率至少为75％来生产。 当执行多个通过时，通过之间的时间小于1秒。 由于热加工，发生了奥氏体的动态转变和/或铁素体的动态再结晶。 对于高纯度钢，总减速比可以至少为35％。
-
公开(公告)号：US4148426A
公开(公告)日：1979-04-10
申请号：US829464
申请日：1977-08-31
CPC分类号： B21D5/015 , B21C37/0815
摘要： A method and apparatus for manufacturing metal pipe. The edges of a metal plate are bent up slightly, and the thus bent plate is then bent into a U-shape cross-section blank. The U-shape blank is finish-formed into an O-shaped blank with the longitudinal edges opposed to each other in a position for welding by placing one end of the U-shaped blank into at least one two-part die the parts of which are movable toward and away from each other. The die has at least one portion with the shape of the opposed die recesses defining a reforming area on one end of the die portion which has an O-shaped cross-section, a finish forming area in the middle of the length of the die portion having an O-shaped cross-section, these O-shaped cross-sections being the shape of the O-shaped blank, and a transitional area at the other end of the die portion having a cross-sectional shape which changes gradually from an O-shape adjacent the finish forming area to an oval shape elongated in the direction of movement of the die parts at the other end of the die portion. The transitional area is relatively short as compared to the remainder of the die parts. This one die portion is shorter than the length of the blank. The U-shaped blank is placed in the die with the elongated dimension of the cross-section corresponding to the elongated dimension of the oval shape and with one end of the blank at the one end of the die portion, and the two part die is closed for shaping the U-shaped blank into a blank having an O-shaped cross-section reformed portion on said one end of the blank, a finished O-shaped cross-section and a transitional section. The two part die is opened and the thus formed blank along the die until the edge of the transitional section of the blank is at the end of the finished forming area of the die portion adjacent the reforming area. The steps of positioning the blank and opening and closing the die are repeated until the blank is completely formed into an O-shaped cross-section, and the opposed edges of the plate are then welded to produce the O-shaped cross-section blank.
-
公开(公告)号：US4122696A
公开(公告)日：1978-10-31
申请号：US789716
申请日：1977-04-21
申请人： Wataru Midzutani , Koe Nakajima , Toshio Kikuma , Keitaku Ondo
发明人： Wataru Midzutani , Koe Nakajima , Toshio Kikuma , Keitaku Ondo
CPC分类号： B21D5/12 , B21C37/0822
摘要： In a method and an apparatus for manufacturing a metal pipe wherein a flat strip or skelp is formed into a cylindrical pipe while being fed in its longitudinal direction by a forming mill having a prefinishing stand, a train of forming stands for forming the skelp with a U-shaped cross section, and a train of finishing stands, the improvement wherein both edge surfaces of the skelp are caused to contact in substantially point contact recess-defining surfaces of concave V-shaped recess in pairs of forming rolls, the respective rolls which are disposed symmetrically in a plane normal to the pass line as the skelp moves through the train of forming stands along the line, and the skelp has a bending load applied by the forming rolls so as to form the skelp into a U-shaped skelp. According to this method and apparatus, there is no need to change the forming rolls even if the diameter or wall thickness of the pipe to be manufactured are changed, and also since the skelp edge is held, during the forming process, at positions in a plane normal to the pass direction by the surfaces of the concave recesses, the skelp is not twisted around the pass line so that threading of the forming mill can be carried out accurately and easily.
摘要翻译： 在一种用于制造金属管的方法和装置中，其中通过具有预精加工台的成型机在其纵向方向上将扁平条或骨架形成为圆柱形管，用于形成具有 U形横截面和一排精加工机架，其改进在于，使两个边缘表面在成对辊对中的凹V形凹槽的基本点接触凹槽限定表面中接触，相应的辊 在沿着线条移动通过成型架列的同时，在与通过线垂直的平面中对称地配置，并且由成形辊施加弯曲载荷，以形成U形骨架。 根据该方法和装置，即使改变要制造的管的直径或壁厚，也不需要改变成形辊，并且由于在成形过程中保持Skelp边缘处于 由凹槽的表面垂直于通过方向的平面，骨架不会在通过线周围扭曲，从而能够准确且容易地进行成形轧机的螺纹加工。
-
9.发明授权
公开(公告)号：US4678522A
公开(公告)日：1987-07-07
申请号：US894255
申请日：1986-08-07
申请人： Tsuyoshi Kawano , Shiroh Sanagi , Koe Nakajima
发明人： Tsuyoshi Kawano , Shiroh Sanagi , Koe Nakajima
CPC分类号： C22C38/00 , C21D8/0426 , C21D8/0436 , C21D8/0473
摘要： A cold rolled boron steel sheet having excellent stretchability, deep drawability, and second workability and method for producing the same, which comprises the steps of hot rolling a steel containing not more than 0.05% C by weight and, P and N in the relation of P+5N.ltoreq.0.0175% by weight at a temperature of 850.degree. C. or more, cold rolling the hot rolled steel strip at a reduction of not less than 50%, and subjecting the cold rolled steel strip to continuous annealing at a temperature between the recrystallization temperature and the A.sub.3 point.
-
公开(公告)号：US4382375A
公开(公告)日：1983-05-10
申请号：US270123
申请日：1981-06-03
CPC分类号： B21B1/222
摘要： Three or more work rolls are arranged substantially in line with each other so that the adjoining work rolls each form a roll pass between them. The work rolls are driven in such a way that the rolls closer to the exit end of the rolling mill stand rotate with increasingly greater peripheral speeds. Metal strip is continuously passed through each roll pass and is wound around part of the periphery of the work rolls disposed between the work rolls at both ends of the stand. Thus, the strip is rolled between each pair of the adjoining work rolls. The work rolls are also driven in such a way that at least in one of the pairs of the work rolls, the peripheral speed of the higher-speed work roll is greater than the speed with which the strip leaves the roll pass formed by the pair of work rolls.
摘要翻译： 三个或更多个工作辊彼此基本一致地布置，使得相邻的工作辊在它们之间形成辊道。 工作辊以这样的方式驱动，使得靠近轧机机架的出口端的辊随着越来越多的圆周速度而旋转。 金属带连续通过每个辊道，并且缠绕在设置在支架两端的工作辊之间的工作辊的周边的一部分周围。 因此，条带在每对邻接的工作辊之间滚动。 工作辊也被驱动，使得至少在一对工作辊中，高速工作辊的圆周速度大于条带离开由该对形成的辊道的速度 的工作卷。
-
-
-
-
-
-
-
-
-
搜索结果
14 条记录 (耗时 0.012 秒)
