Study And Application On Strip Shape Setup Model Of 1580mm Stainless Steel Hot Rolling

With the progress of stainless steel production technology and development of the world industrial,the user requirements about the quality of the stainless steel are also rising.In the stainless steel strip hot rolling,strip shape has been one of the important indicators of shape quality.The field of stainless steel strip shape control becomes the emphasis and difficulty of research for the multitudinous scholar.Strip shape setup model is one of the most complicated process setup models in hot rolling strip steel production in line.With the development of the hot rolled strip steel rolling process control technology level,the roughing setting model,finishing setting model and the essence of other online setting model have been mastered,However the strip shape setup research and development is still in the backward state of the model.Combining the equipment and the production technology in finish rolling area of ShengYang 1580 mm stainless steel hot rolling production line,according to strip shape control theory,drawing lessons from the domestic hot rolling production line strip shape setup model,to research the finishing area shape setup model.The main research work is as follows:Shape setup mathematical model including no-load roll gap crown model,roll gap crown load model,are loaded roll gap crown model,the critical buckling model;Presetting model are established to calculate the flow including flatness setting model initialization,plate crown scope,shape control equipment parameter value calculation,plate shape control equipment adjustment.Effects of the middle slab crown on finishing zone plate crown are studied,the process of rolling billet after F1 frame is also simulation,the F1 rack exports plate crown and analysis the export crown changes along with the rule and cause of the change of the billet in the middle by changing the middle crown sizeAccording to the operation situation at the scene,the rolling schedule set results and the frame set trends of strip profile,effctive proportional crown and roll bending force along the frame direction are given in finishing zone of ShengYang 1580 mm hot rolling line and give the actual detection and plate crown value of roll bending.Results show that good flatness,set reasonable flatness.