Dan CHIRA, Gheorghe Radu, Emil MARIES
Volume XXIII (XIII), 2014/3
The paper presents the influence of thermoplastic material grind percentage over the warpage of injection molded pieces. Mixtures were made in different plastics grind material percentage, 100% new material, new material 80% + grind 20%, new material 60% + grind 40%, new material 40% + grind 60%, new material 20% + grind 80% and grind 100%, made by two thermoplastic materials: polyoxymetylene, (POM), and acrylonitrile-butadiene-styrene, (ABS) . The measurement of warpage was carried out using a laboratory orthometer. After measurements have found that warpage decrease with increasing of grind percentage in case of both plastic materials.
Keywords: grind percentage of thermoplastic material, injection molding, `ABS`, `POM`, warpage
ISSN 1583-0691, CNCSIS "Clasa B+"