EFFECT OF PROCESSING PARAMETERS ON WARPAGE OF INJECTION MOLDED PARTS USING TAGUCHI METHOD

Tóm tắt

There are lots of plastic components produced by using injection molding
process. The plastic parts are used in the most of practical applications such as
electronics, automotive, medical, aerospace, and construction areas. The plastic
product is normally lowed its quality by some defects appeared on the molded
part such as warpage and shrinkage. The injection molding process is controlled
via adjusting the injecting process parameters to get the high quality of final parts
such as minimizing the warpage of product. This paper demonstrates the design
of experiment method (DOF) with Taguchi technique to investigate the effect of
process parameters on warpage of injection molded parts during injection
molding process. By Taguchi method, the orthogonal array is designed to optimize
warpage via controlling the influencing factors of melt temperature, mold-open
time, and cycle time. ANOVA analysis is used to figure out the most effect of the
parameters on the warpage. The results show that the melt temperature has
highest effect on the warpage, the second position is cycle time, and third factor
of mold-open time has smallest effect on the warpage.