Abstract
This study emphasizes the warpage phenomenon of thin-walled parts using acrylonitrile-butadiene styrene (ABS) plus polycarbonate (PC) plastics for optimal processing by thin-wall injection molding. The authors first employed the Moldflow software to analyze the runner’s balance on multicavities for thin-walled parts and to simulate the warpage of thin-walled parts with thin-wall injection molding. Then, this study used those data to fabricate a real mold by computer numerical control machining. For this study, the authors fabricated thin-walled parts and measured their warpage using various process parameters (injection speed, injection pressure, mold temperature, packing time, and melt temperature) with thin-walled injection molding. Finally, the authors found that the most important processing parameter was the packing time for warpage phenomenon of thin-walled parts by thin-wall injection molding.
Highlights
Thin-wall injection molding is used to manufacture thinwalled structures and is among the most common and versatile methods to mass-produce complex plastic parts
The results revealed the melt temperature of 235°C, injection pressure of 60 MPa, packing pressure of 30 MPa, and packing time of 5 seconds have the minimum value on warpage of injection molded part
The results showed that packing time, cooling time, and melt temperature are the most significant factors influencing warpage reduction
Summary
Thin-wall injection molding is used to manufacture thinwalled structures and is among the most common and versatile methods to mass-produce complex plastic parts. Thin-wall injection molding is utilized for parts with a thickness of
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