Design and Process Optimization of Low-pressure Casting Mold for Motorcycle Cylin-der Head
Aiming at the characteristics of single-cylinder aluminum alloy cylinder head of motorcycle engine,such as compact structure,uneven wall thickness and complex sand core shape,the mold structure and design characteristics of aluminum alloy cylinder head were analyzed,and MAGMA software was used to simulate and analyze the influence of temperature,pressure and cooling rate on solidification structure.The occurrence of gas-entrapment,hot spot and combustion chamber in the key positions of cylinder head casting was investigated through the simulation of the solidifi-cation crystallization process of casting.The orthogonal experimental method was used to simulate and compare the processing factors of the interacted effect of cylinder head low-pressure casting process,and the weight influencing fac-tor was found out for the fine control of the key to realize the preset solidification sequence of low-pressure casting,improving the internal solidification and crystallization density of aluminum alloy cylinder head castings and the produc-tion quality of low-pressure casting.
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