Design And Process Parameters Optimization Of Die-casting Die For Cast Aluminum Motor

Casting aluminum motor rotor cage molding process,the die-casting molds and die-casting machine tools often appear to match the degree is not high,the development of the process parameters susceptible to noise interference and other issues.In order to meet the actual needs of enterprises to cast aluminum rotor aluminum cage for the object,to design a set of die-casting machine can achieve the best match with the die-casting mold,and to determine a set of internal quality to ensure the best noise factors are not obvious combination of process parameters.First of all,to determine the casting die casting system in the form and structure of the die casting machine were selected and checked.The cross-sectional area of the gate is optimized by p-Q2 diagram technique.When the cross-sectional area of the gate is 307.29mm2,the matching degree between the casting system and the die-casting machine is the best.Secondly,the numerical simulation technique is used to study the temperature field of the model with cooling water channel.The model reaches the thermal equilibrium state in the 12th thermal cycle.The results show that when the water temperature is 50 ?,the distance between the wall and the cavity is 52mm and the diameter of the cooling water pipe is 14mm,it has reasonable mold temperature gradient and the surface heating rate is high The And verify that the casting in the cooling system,the composition in line with the order of solidification,and shrinkage shrinkage distribution decreased.In addition,the overall design of the mold,including the mold cavity parts of the size of the calculation,according to the filling process numerical simulation design exhaust slot,the top out of the body design,compression mechanism design and cylinder selection,guiding mechanism design and complete.The overall assembly of the mold.The rotor squirrel cage production process into the introduction of the mold to complete the test mode,after the test die found that the rotor surface quality is good.Finally,the numerical simulation of orthogonal test and robustness analysis,the difference analysis,to determine the slow pressure fast switching point of 250mm,filling speed of 2.5m/s,aluminum liquid temperature 680?,mold temperature of 280?,Shrinkage volume of the smallest 5.816295cc,and the noise is not sensitive to the impact of the primary and secondary times for the aluminum liquid temperature,mold temperature,filling speed,slow pressure fast switching point.The results show that the numerical simulation model can effectively reflect the actual distribution of shrinkage and shrinkage.After the test mode,to determine the final process parameters slow pressure fast pressure conversion point of 280mm,injection speed of 2.73m/s,aluminum liquid temperature 692?,mold temperature of 274?.After the study,the design of mold and die-casting machine with a high degree of matching,optimization of the process parameters of the program can make the internal key areas to reduce defects,shrinkage rate decreased.Production of cast aluminum rotor in line with the actual needs of the factory,to meet customer needs.