通过实验设计减少BravoⅡ型机的塑壳缺陷

REDUCE BRAVO PLASTIC HOUSING DEFECT BY DOE

找出了在注塑成型过程中对产品银丝缺陷的产生起关键作有物输入参数：射速，螺杆转速，背压，确定了三个参数对此缺陷形成影响的强弱顺序，确定出三个参数在生产过程中的最佳输入值，将银丝引起的产品不良率降低了９０％

The inputs (shoot speed,screw speed,back pressure) that have critical effect on silver silk defect of the production are found in molding process.Their influence order on forming of this defect are determined.Their optimum input values are set.Badness rate of the production that casued by silver silk has been reduced 90%.