Sepg. calender rolls - involves lowering pressure in hydraulic carrier support installations with time delay w.r.t. pressure to prevent damage to roll surface

摘要

The calender which is equipped with a stand and several rolls located on top of each other. The bottom roll features a torsion-resistant carrier, which is moved in the vertical direction by means of hydraulic carrier support devices, and a roll surface which rotates round the carrier, is supported by a hydraulic support component and moves in the vertical direction. The process involves lowering the pressure in the hydraulic carrier support installations with a specific time delay in relation to the pressure in the hydraulic roll surface support components. ADVANTAGE - The process and the associated control unit cut the sepg. time while preventing damage to the roll surface.