公开(公告)号：US06871693B2

公开(公告)日：2005-03-29

申请号：US10362252

申请日：2001-07-25

申请人： Werner Rahmfeld ,  Jacob Wetter

发明人： Werner Rahmfeld ,  Jacob Wetter

IPC分类号： B22D11/128 ,  B22D11/12 ,  B22D11/16 ,  B22D11/20

CPC分类号： B22D11/1206

摘要： The invention relates to a method and a device for the continuous casting of slabs or ingots, in particular of thin slabs in a continuous casting installation. Said installation comprises a soft reduction section in a continuous casting guide under the mould. The soft reduction section contains pressure rollers and support roller (3, 4), which are continuously restrained in relation to one another, either individually or as a segment (1), by means of hydraulic cylinders (7, 7′) and are restrained in a limiting manner by stops (30). The installation uses a hard-pressure restraining force in an area of the soft reduction section that has not yet completely solidified and a soft-pressure restraining force in an area of the soft reduction section that has completely solidified. Threshold and changeover values for the hard and soft-pressure are defined in the segment is restrained using hard-pressure, such a way that if the restraining force lies below the threshold or changeover value, and if the restraining force lies above the threshold or changeover value the segment is restrained using soft-pressure.

摘要翻译： 本发明涉及一种用于在连续铸造设备中连续铸造板坯或锭，特别是薄板坯的方法和装置。 所述安装包括在模具下面的连续铸造引导件中的软质还原部分。 软还原部分包含通过液压缸（7,7'）单独地或作为段（1）彼此连续约束的压力辊和支撑辊（3,4），并被限制 以限位方式（30）。 该装置在软还原区域尚未完全固化的区域中使用硬压抑制力，并且在软还原区域的完全固化的区域中具有软压力约束力。 在使用硬压力的情况下，使用限制力限制在段内定义的硬和软压力的阈值和转换值，如果约束力低于阈值或转换值，并且如果约束力位于阈值或转换之上 值使用软压力约束。

公开(公告)号：US4353286A

公开(公告)日：1982-10-12

申请号：US166451

申请日：1980-07-07

申请人： Jacob Wetter

发明人： Jacob Wetter

IPC分类号： B22D11/16 ,  F15B13/01 ,  F16L55/10 ,  F15B13/042

CPC分类号： F16L55/1022 ,  B22D11/16 ,  F15B13/01 ,  Y10T137/7759 ,  Y10T137/7785

摘要： A hydraulic control system with a pipeline antiburst safety device for a double acting drive cylinder, more particularly for adjusting and securing the position of a driven guide roller in the strand guide of a continuous casting plant which exerts an operationally conditioned reaction force, applied by the strand, on the piston of the drive cylinder. To prevent this reaction force causing the guide roller to retract in the event of a pipe burst, the control system substantially comprises a leakage-proof stop valve of cartridge construction disposed close to the drive cylinder and within the main control duct a leakage proof pilot valve situated close to the stop valve and having a spring-biased spool and a pressure retaining accumulator to maintain the pressure in the adjusting cylinder in the event of pressure failure in the main control duct, and a valve spool of the stop valve has three control surfaces and under normal position is in the closed position under the light pressure exerted by a compression spring which pressure can be overcome by an operationally conditioned pressure rise in the drive cylinder but in the event of a pipe burst the pilot valve changes over and momentarily replaces the absent pressure in the main control duct, normally biasing the control surface of the stop valve spool, by the pressure from the pressure retaining accumulator so that the stop valve remains in the closed position.

摘要翻译： 一种液压控制系统，其具有用于双作用驱动气缸的管道防爆装置安全装置，更具体地说，用于调节和固定从动引导辊在连续铸造设备的股线引导件中的位置，该连续铸造设备施加操作上调节的反作用力， 在驱动气缸的活塞上。 为了防止在发生管道爆裂的情况下导致引导辊缩回的这种反作用力，控制系统基本上包括靠近驱动气缸并且在主控制管道内的主体控制管道中的泄漏防止截止阀， 位于靠近截止阀并具有弹簧偏置的阀芯和压力保持蓄能器以在主控制管道中的压力故障的情况下保持调节气缸中的压力，并且截止阀的阀芯具有三个控制表面 并且在正常位置处在由压缩弹簧施加的轻压力的关闭位置处，该压力可以通过在驱动气缸中的操作上调节的压力上升来克服，但是在管道爆裂的情况下，先导阀改变并且立即替换 在主控制管道中没有压力，通常由压力机的压力偏压截止阀阀芯的控制表面 保持蓄能器，使截止阀保持在关闭位置。