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Influence of process parameters on spinning force and wall thickness difference of shear spinning

ZHANG Jin-hui,ZHAN Mei,YANG He,XU Yin-li,MA Fei(College of Materials Science & Engineering,Northwestern Polytechnical University,Xi'an 710072,China)  
Investigation on spinning force is very important to determine reasonable process parameters and spinning equipment,and wall thickness difference is a key quality index of spun part.Based on FEM software ABAQUS/Explicit,a reasonable 3D FEM model of cone spinning is established.The effects of process parameters such as the deviation ratio,roller nose radius,roller feeding,mandrel rotational speed and roller diameter on the spinning force and the wall thickness difference of LY12M cone spinning are obtained.The results indicate that: The spinning force decreases when the deviation ratio increases,and increases when roller feeding and mandrel rotational speed increase.When the degree of the sine law deviation is larger,the wall thickness difference gets bigger;When roller nose radius is in the range of once to twice of the blank thickness,the wall thickness difference is relative small;When bigger roller feeding and mandrel rotational speed are used,the wall thickness difference becomes smaller.The influence of roller diameter on the spinning force and the wall thickness difference is not remarkable.
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