Basic Study And Development To Key Technology Mathematic Model Of Cold Tandem Mill

Along with the technical development of cold rolled steel strip, more and more high demand has been put forward to the output of cold tandem mill and the product quality. But the technologic mathematical model of the cold tandem rolling production is it key technique. It has very important theory significance and appliance value that how to further improve technologic mathematical model of the cold tandem rolling through the combination of theory and experience and then improve rolling speed of cold tandem mill and surface quality of steel strip.On the point of metallic phase, considering that equivalent weight of carbon, finished-rolling temperature and crimp temperature of hot rolling steel strip which controlled exist fluctuate affect its structure and machine capability, and combining a mass of field data analysis and then find out its rule, the resistance of deformation of hot-rolling finished steel strip is emended; besides, on the point of plastic yield mechanics, whereas the characteristic of very high rolling speed of cold tandem mill and very rapid speed of deformation of rolled piece, the factor of speed of deformation will be inducted the model of resistance of deformation, which may emend the model of resistance of deformation.On the base of the relation of lubricating oil film thickness and friction, combining the theory of hydrokinetics and energetics, then the technology model between greasing system and friction will be put forward through analyzing the affect mechanics of the consistency, flux, initial temperature and trait of oil water emulsion to temperature field and finding out the relationship between lubricating oil film thickness and oil water emulsion, on the same time, qualitatively analyse how to affect friction by the controlled parameter ofgreasing system.On the base of tandem theory, introducing the optimization idea which has several optimization object and adopt a point-by-point framework method, depress allocation and tension system will be optimized integratived in the production process of cold tandem mill which take good shape of strip of the fifth framework and symmetrical allocation of burden of from one framework to five framework as optimization object and abundantly considering several constraint condition such as nip angle and slipping.