Design And Research Of 15 - Roll Straightening Machine

With the development of plate rolling mills and specification plate mill continuously enriched, steel straightening machine working range is ever increasing and therefore conducting research in sheet straightening machine operating parameters. Designing wider range of more targeted straightening correction machine is a strong practical value and theoretical significance projects.Based on the theory of straightening machine and the rule of Beingjing Beiye Functional Materials Co.,Ltd., desiging requirements for cold-rolled strip production line fifteen roller siaightening machine,studying this article.The main contents in this paper incede:the cause of the flatness of the sheet,the category of sheet straightening machine, the basic parameters and mechanical performance parameters of fifteen roll straightening machine,and the whole structure.First,the development of a unique new fifteen-roll straightening machine rolls configuration,roll away from the roller system and other international advmced level.Under rolls support roll with a short,perpendicular axis of the adjustment of the work rolls,by adjusting the columns wedge short bearing rollers,thus changingthe work roll crown,which is the most advanced mechanical tone convex body.The roll system through reduction means a two-way lift the entire roll system meet repeatedly and bi-biting straightening,bythe worm gescrew system to achievethe lifting of import and export roll alone,which will help both ends of the roll bite and improve the quality straightening;through the implementation of each wedge adjustment means elevating the work roll alone,to achieve each of the flexible adjustment of the amount of roll bending,straightening improve the quality and efficiency.Secondly,the work rolls back-up roll bears byoil lubrication oil lubrication.In the dry oil lubrication system,dry oil pipeline by high-temperature baking,interior easily carbonized grease,causing pipe blockage,lower work rolls and back-up roll bearings tattered Wheiithe work roll bearing damage,and the steel surface damage normal contact work roll,the roll surface hardness decreases with increasing temperature,iron oxide is pressed into the roll surface,causing the plate surface scratches,partial tension plate straightening uneven work rolls damage and other huge economic losses. When theback-up roll locking, low high surface hardness roll will support roll surface hardness lack of edge sharp ground, resulting in decreased work roll hardness, roll surface strain, forming edges, scratched steel surface.The work rolls and back-up roll bearings from the dry lubrication,extent bearing life and straightening roll life, reducing maintenance time, reduce the board surface scratches rate, greatly improving the quality and production efficiency.Finally, to determine the method by studying fifteen roll straightening machine(cold straightening)rolls parameter callation roll straightening machine mechanical parameters and structural design roll straightening machine,so the basic parameters of the design of fiitury new is ok and the calculate mechanical parameters can be more accurate and reasonable.