42 Crmo Vertical Centrifugal Casting Ring Grey Prediction And Control Organization

With the rapid developmeng of epuipmeng manufacturing industry in ourcountry. The demand for large ring in quantity and quality is higher. Looking fora new ring forming technology become a problem urgently needs to solve. Ringrolling directly by means of annular casting blank is an efficient,material-effici-eny, energy-efficieny production technology of rings. How to get a good ringslab is one of the key links in the process. Based on the national natural fund(51135007) with the support of key projects. The gain of sand casting processlaid a good foundation for ring rolling directly by means of annular castingblank and provided possobility for the success of the cast-forming compositetechology.First of all, comparing the microstructure distribution under differentcasting process with each other, The Results show that the microstructuredistribution under different casting process has a good agreement with theas-cast three crystal theory, which provides a rheoretical basis for the analysis ofsolidification centrifugal microstructure distribution.After the analysis of the effect of the different parameters of centrifugalcasting, the42CrMo casting process of vertical centrifugal was designed, at thesame time, the casting smelting scheme was finished, which provides theoreticalparameters for numerical simulation.Finally, linking the microscopic simulation of solidification process ofcentrifugal ring with macro defects. Through the analysis of the flow field,temperature field of microstructure and the solidification characteristics ofcentrifugal casting, the centrifugal casting possible defects such as rule ofmountain was predicted by using new three crystal theory, at last the reasonablecontrol measures was raised. For the achivement of betwer quality of castingblank provides a solid foundation.