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公开(公告)号：US4401481A
公开(公告)日：1983-08-30
申请号：US215331
申请日：1980-12-11
申请人： Martin Gilvar , Robert B. Russell
发明人： Martin Gilvar , Robert B. Russell
CPC分类号： C21D9/525 , B21B1/18 , B21B41/00 , B21B43/08 , B21C47/262 , C21D9/5732
摘要： A process for rolling steel rod is provided whereby rolling rod at delivery speeds in excess of 15,000 fpm and cooling same after laying it in spread-out ring form on a conveyor is made feasible with less risk of cobbles and improved rod quality especially in the medium to high carbon content range by entering the rod after rolling into the laying head and thereafter cooling same non-uniformly through a grain size growing phase and a transformation phase with the non-uniformity of cooling rate during the transformation phase being kept in substantially inverse proportion to the differences in effective grain size established in the first phase. In addition a very long cooling conveyor which is necessitated by such delivery speeds (not only for high carbon steels but also low carbon and low alloy steels) is provided without requiring additional horizontal space, by arranging the conveyor in a multiplicity of tiers, spaced vertically, running in opposite directions, and being provided with means for transferring the rings from one tier to the next. Cobbles on the conveyor at high delivery speeds are minimized by coiling with 1/2" spacing, and by reforming means adapted for high speed delivery of rings from the conveyor onto an upwardly sloping mandrel surface, or into a curved chute which stacks the rings on their sides. An intermittent reheat method is employed for processing rod where slow cooling and/or heat treatment at a steady temperature is required.
摘要翻译： 提供了一种用于轧制钢棒的方法，其中轧辊的输送速度超过15,000fpm，并且在输送机上以展开环形式放置之后进行冷却是可行的，具有较小的鹅卵石风险和改善的杆质量，特别是在介质中 通过在轧制到铺设头后进入棒，然后不均匀地通过晶粒尺寸生长阶段和相变阶段冷却，转化阶段期间冷却速率的不均匀性保持大致相反的比例，达到高碳含量范围 对第一阶段确定的有效晶粒尺寸的差异。 此外，通过这种输送速度（不仅对于高碳钢，而且对于低碳和低合金钢也是必需的），需要提供非常长的冷却输送机，而不需要额外的水平空间，通过将输送机布置成多个层，垂直间隔 ，沿相反方向运行，并且设置有用于将环从一个层传送到下一个层的装置。 在高输送速度下输送机上的鹅卵石通过以1/2“间距的卷绕而被最小化，并且通过适于将环从输送机高速输送到向上倾斜的心轴表面上的重整装置或者将弯曲的槽 在他们身边。 处理棒采用间歇再热方法，需要在稳定的温度下缓慢冷却和/或热处理。
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公开(公告)号：US4491488A
公开(公告)日：1985-01-01
申请号：US444111
申请日：1982-11-24
申请人： Martin Gilvar , Robert B. Russell
发明人： Martin Gilvar , Robert B. Russell
摘要： A process for rolling steel rod is provided whereby rolling rod at delivery speeds in excess of 15,000 fpm and cooling same after laying it in spread-out ring form on a conveyor is made feasible with less risk of cobbles and improved rod quality especially in the medium to high carbon content range by entering the rod after rolling into the laying head and thereafter cooling same non-uniformly through a grain size growing phase and a transformation phase with the non-uniformity of cooling rate during the transformation phase being kept in substantially inverse proportion to the differences in effective grain size established in the first phase. In addition a very long cooling conveyor which is necessitated by such delivery speeds (not only for high carbon steels but also low carbon and low alloy steels) is provided without requiring additional horizontal space, by arranging the conveyor in a multiplicity of tiers, spaced vertically, running in opposite directions, and being provided with means for transferring the rings from one tier to the next. Cobbles on the conveyor at high delivery speeds are minimized by coiling with 1/2" spacing, and by reforming means adapted for high speed delivery of rings from the conveyor onto an upwardly sloping mandrel surface, or into a curved chute which stacks the rings on their sides. An intermittent reheat method is employed for processing rod where slow cooling and/or heat treatment at a steady temperature is required.
摘要翻译： 提供了一种用于轧制钢棒的方法，其中轧辊的输送速度超过15,000fpm，并且在输送机上以展开环形式放置之后进行冷却是可行的，具有较小的鹅卵石风险和改善的杆质量，特别是在介质中 通过在轧制到铺设头后进入棒，然后不均匀地通过晶粒尺寸生长阶段和相变阶段冷却，转化阶段期间冷却速率的不均匀性保持大致相反的比例，达到高碳含量范围 对第一阶段确定的有效晶粒尺寸的差异。 此外，通过这种输送速度（不仅对于高碳钢，而且对于低碳和低合金钢也是必需的），需要提供非常长的冷却输送机，而不需要额外的水平空间，通过将输送机布置成多个层，垂直间隔 ，沿相反方向运行，并且设置有用于将环从一个层传送到下一个层的装置。 在高输送速度下输送机上的鹅卵石通过以1/2“间距的卷绕而被最小化，并且通过适于将环从输送机高速输送到向上倾斜的心轴表面上的重整装置或者将弯曲的槽 在他们身边。 处理棒采用间歇再热方法，需要在稳定的温度下缓慢冷却和/或热处理。
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公开(公告)号：US4580429A
公开(公告)日：1986-04-08
申请号：US691653
申请日：1985-01-15
申请人： Martin Gilvar
发明人： Martin Gilvar
CPC分类号： B21B31/32 , B21B13/001 , B21B31/08 , B21B2031/026 , B21B2203/06 , B21B31/02
摘要： A rolling mill roll stand has a housing removably mounted on a lower bridge. A pair of work rolls and their respective bearings and bearing chocks are contained within the housing. Separating devices act on the bearing chocks to maintain a gap between the work rolls. Hydraulic roll positioning cylinders are carried in the lower bridge and are arranged to act on the bearing chocks of one of the work rolls. The housing together with the work rolls, bearing chocks and separating devices is removable as a unit from the lower bridge, while allowing the hydraulic positioning cylinders to remain undisturbed.
摘要翻译： 轧机辊架具有可拆卸地安装在下桥上的壳体。 一对工作辊及其各自的轴承和轴承座被包含在壳体内。 分离装置作用在轴承座上以保持工作辊之间的间隙。 液压辊定位缸承载在下桥中，并布置成作用在一个工作辊的轴承座上。 外壳与工作辊，轴承座和分离装置一起作为一个单元从下桥可拆卸，同时允许液压定位缸保持不受干扰。
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公开(公告)号：US3940961A
公开(公告)日：1976-03-02
申请号：US524458
申请日：1974-11-18
申请人： Martin Gilvar
发明人： Martin Gilvar
IPC分类号： B21B43/00 , B21C47/26 , C21D9/52 , C21D9/573 , B21B45/02 , B21B45/04 , B21C43/00 , B21F21/00
CPC分类号： C21D9/5732 , B21C47/262
摘要： Apparatus is provided for uniformly cooling hot rolled rod over a continuous range of cooling rates from less than 0.5.degree. C/sec. to about 20.degree. C/sec. together with a mechanism for removing scale accumulated therein in a confined and safe manner. The context is that of cooling hot rolled steel rod directly after the steel leaves the rod mill wherein the rod may either be cooled rapidly by forced air convection or cooled very slowly under conditions in which a heated fluid or radiant heating must actually be employed in order to retard the cooling rate. The apparatus includes a group of cooling chambers, each of which has a blower which can be used to force cool air from the atmosphere onto the rod. Some of the cooling chambers are also equipped with means for supplying heat to the rod as may be necessary to retard the cooling rate. When this is done in air, scale formation on the steel is more extensive due to the prolongation of time at high temperature, and as the scale builds up, it also tends to break away from the rod and fall to the bottom of the cooling chamber. The air streams, which are otherwise used to control the cooling of the steel by forced air convection, can then be redirected and used to entrain and dispose of the scale from the cooling chambers. This is done by an arrangement of ducts and dampers whereby the blowing is adapted to draw air either from the atmosphere for cooling or from the cooling chamber where the scale accumulates, for scale disposal. Thus, when the apparatus has been used in the retarded cooling mode, and it becomes desirable to change to the rapid cooling mode, the dampers are set so that the blowers withdraw scale from the cooling chambers and transmit it to the scale disposal facility. Then the dampers are reset so that the blowers can transmit air into the cooling chambers to cool by forced air convection. When the means for supplying heat to some other cooling chambers are used, in order to retard the cooling rate, the remaining cooling chambers may be used to cool either by natural or forced convection. Those chambers being used for cooling by natural convection may be alternately adapted for the removal of scale accumulation by the use of a blower. The cooling chambers are equipped with an arrangement of nozzles adapted to apply a greater proportion of the cooling medium to the sides of the rings than to the centers. This helps to overcome the mass-effect of the overlapped rings at the side of the conveyor so as to cool more uniformly in the rapid cooling mode. The same nozzles may also be employed in the slow cooling mode when a heated gas is applied to the rod.
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公开(公告)号：US4182148A
公开(公告)日：1980-01-08
申请号：US892932
申请日：1978-04-03
申请人： Martin Gilvar
发明人： Martin Gilvar
IPC分类号： B21B35/12 , B21B1/18 , B21B1/46 , B21B13/00 , B21B13/02 , B21B31/02 , B21B31/10 , B21B31/26 , B21B35/02 , B21B35/14 , B21B39/18 , B21B1/00 , B21B35/00
CPC分类号： B21B1/18 , B21B13/005 , B21B13/02 , B21B35/02 , B21B1/46 , B21B2013/003 , B21B2013/006 , B21B2203/04 , B21B2203/12 , B21B31/02 , B21B31/10 , B21B31/26 , B21B35/12 , B21B35/14 , B21B35/142 , B21B39/18
摘要： A multi-line rolling system having a plurality of rolling positions aligned in the direction of rolling. Each rolling position includes a housing or housing structures supporting at least two sets of work rolls which may be selectively coupled to a common power source, thereby permitting the rolling line formed by one roll set to be rendered inoperative while the rolling line of the other roll set continues to roll product received from a feed line. The system further includes an appropriate switching mechanism for directing product from the feed line to either rolling line.
摘要翻译： 具有在轧制方向上排列的多个轧制位置的多线轧制系统。 每个滚动位置包括支撑至少两组工作辊的壳体或壳体结构，其可以选择性地联接到公共动力源，从而允许由一个辊组形成的轧制线在另一个辊的轧制线 设置继续卷起从饲料线收到的产品。 该系统还包括适当的切换机构，用于将产品从进给线引导到轧制线。
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公开(公告)号：US4706485A
公开(公告)日：1987-11-17
申请号：US941324
申请日：1986-12-15
CPC分类号： B21B31/08 , B21B13/005 , B21B27/10 , B21B27/03
摘要： A portable carrier module for transporting work rolls and entry and exit guides to and from a cantilevered roll stand in a rolling mill. The carrier module remains removably mounted on the roll stand during the rolling operation, and includes integral roll cooling means automatically coupled to water supply conduits extending through the roll stand housing.
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公开(公告)号：US4413494A
公开(公告)日：1983-11-08
申请号：US234115
申请日：1981-02-13
申请人： Martin Gilvar , Philips Wykes
发明人： Martin Gilvar , Philips Wykes
CPC分类号： B21B39/14 , B21B13/005 , B21B39/006 , B21B2203/22
摘要： In a rolling mill wherein hot rolled rod is directed along a downwardly curved path into a vertical laying head which forms the rod into a series of rings, a method of and apparatus for propelling the rod through the laying head. The rod is passed between a pair of adjustable driven pinch rolls located in advance of the downwardly curved path. An initial closing force is exerted on the pinch rolls to establish an initial parting prior to entry of a rod front end therebetween. The initial parting is sized to produce at least some rod deformation while providing a driving relationship between the pinch rolls and the rod. The initial closing force is greater than the momentary surge in separating force accompanying impact of a rod front end with the pinch rolls. The initial parting is maintained until the rod front end has negotiated the downwardly curved path and has passed through the laying head, at which time the initial closing force is released. The pinch rolls can then either be opened completely to allow the rod to continue running freely therebetween, or the initial closing force can be replaced by a lower secondary closing force which allows the rod to push the pinch rolls apart to a secondary parting. The second parting continues the driving relationship between the pinch rolls and the rod, without any accompanying rod deformation.
摘要翻译： 在其中热轧棒沿着向下弯曲的路径被引导到将杆形成一系列环的垂直铺设头的轧机中，一种通过铺设头推动杆的方法和装置。 杆在位于向下弯曲的路径之前的一对可调节的从动夹送辊之间通过。 在夹紧辊之间施加初始闭合力，以在杆前端进入之前建立初始分型。 初始分型的大小可以产生至少一些杆变形，同时提供夹送辊和杆之间的驱动关系。 初始闭合力大于伴随夹紧辊的杆前端冲击的分离力的瞬时浪涌。 保持初始分型，直到杆前端已经协商了向下弯曲的路径并且已经通过铺设头，此时初始闭合力被释放。 然后可以完全打开夹送辊以允许杆在它们之间自由地继续运行，或者初始闭合力可以由较低的次级关闭力代替，其允许杆将夹送辊推开到第二分离。 第二次分型继续夹紧辊和杆之间的驱动关系，没有任何伴随的杆变形。
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公开(公告)号：US4037450A
公开(公告)日：1977-07-26
申请号：US732392
申请日：1976-10-14
申请人： Martin Gilvar
发明人： Martin Gilvar
摘要： An apparatus is disclosed for use in a rolling mill to support the bearing chocks of a work roll in a roll housing. The apparatus includes specially designed components interposed between the bearing chocks and the restraining devices employed to oppose the axial and transverse forces developed during a rolling operation. The aforesaid components offer minimum resistance to movement of the bearing chocks through minute distances in the direction of rolling. The apparatus of the present invention makes it possible to measure tension in the product being rolled by employing sensing devices acting on the bearing chocks.
摘要翻译： 公开了一种用于轧机以支撑辊壳中的工作辊的轴承座的装置。 该装置包括插入在轴承轴承座和用于抵抗在轧制操作期间产生的轴向和横向力的限制装置之间的特别设计的部件。 上述部件在滚动方向上提供最小的轴承座轴承移动距离。 本发明的装置可以通过采用作用在轴承座上的感测装置来测量被轧制产品中的张力。
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