(1. National Engineering Research Center for Equipment and Technology of Cold Rolling Strip,Yanshan University,Qinhuangdao 066004,Hebei,China 2. State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 066004,Hebei,China 3. Facility Department,Baosteel Branch,Baoshan Iron and Steel Co.,Ltd.,Shanghai 200941,China )
Abstract:The curved plates are key components of the slab sizing press machine to transform movement and rolling force,and the sector gears are used to prevent the slippage among curved plates. After analyzing the basic structure of slab sizing press machine,it is found that after the curved plates worn away,the sector gears could deflect automatically within a certain range to ensure the smoothing transformation of movement and rolling force. When the sector gears deflect to the limiting position and the curved plates are wearing continually,the sector gears will break easily. In order to prevent the happening of the break above,the wear limit of curved plate is calculated on the basis of geometrical parameters of device,which provides a theoretical basis for the maintenance and spare part replacement of slab sizing press machine. The key structural parameters which influence the wear limit of curved plates are analyzed,which can provide a guidance for the modification and localization of equipment .
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