公开(公告)号：US3648496A

公开(公告)日：1972-03-14

申请号：US3648496D

申请日：1969-06-16

申请人： MAROTTA VALVE CORP

发明人： PETRY HENRY ALFRED ,  RERECICH FRANCIS ,  SPANGENBERG GERHARD

IPC分类号： B21B27/02 ,  B21B29/00 ,  B21B37/38 ,  B21B37/62 ,  B21B37/02 ,  B21B31/32 ,  B21B37/06

CPC分类号： B21B29/00 ,  B21B27/02 ,  B21B37/38 ,  B21B37/62

摘要： A system for controlling rolling mills, especially roll contour, has hydraulic motors supplied with working fluid through a pressure regulator. The downstream pressure of the working fluid from the pressure regulator is adjusted by selectively supplying and venting fluid from a loading chamber of the pressure regulator. The loading and unloading controls are of a nature that permits remote location, and they are operated by an attendant in accordance with signals from the mill indicating errors in the dimensions of metal being rolled by the mill. Automatic operation can be substituted for the manual operation and programmed control of the pressure can also be used. Loading and unloading valves have actuators providing dither for the valve to prevent the difference in flow rates when flow is increasing as compared to conditions when flow is decreasing.

摘要翻译： 用于控制轧机，特别是轧辊轮廓的系统具有通过压力调节器供给工作流体的液压马达。 来自压力调节器的工作流体的下游压力通过从压力调节器的装载室选择性地供应和排出流体来调节。 装载和卸载控制的性质是允许远程定位，并且它们由服务员根据来自磨机的信号操作，指示由轧机轧制的金属的尺寸的误差。 自动操作可以代替手动操作，也可以使用编程控制的压力。 装载和卸载阀门具有为阀门提供抖动的执行器，以防止当流量下降时流量增加时的流量差异。