Abstract
Injection molding-induced residual stresses have strong influence on molding precision for compressor experimental blade used on LSRC (Low Speed Research Compressor). In this paper, finite element model (FEM) and response surface methodology (RSM) are employed to reveal the effect of processing parameters on residual stress for injection molding of compressor experimental blade. First, the influence of processing parameters such as melt temperature, mold temperature on the residual stress of blade was studied based on factorial experiment. Then, the rules of influence of the main processing parameters and their interactions on injection residual stress of blade was analyed based on RSM ． The results show that the packing time and melt temperature are the principle factors for controlling injection residual stress of compressor experimental blade ． In addition, the packing time and melt temperature has strong interaction effect on the residual stress of blade.
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