Abstract
This paper examines parameters that could influence geometric part deviation (shrinkage and warpage) of the Housing (Cycoloy, PC/ABS, Grade C2800) produced by plastic injection molding. Five parameters (temperature of molded plastic, injection time, cooling time, holding pressure, holding pressure time). Influence of the parameters is compared by simulation and real experiment with the results measured at five points. Taguchi's orthogonal array method is used. The simulation leads to unreliable results, with too many parameters influencing geometric deviation. Factor that has major influence is holding pressure time (HPT). The real experiment identifies holding pressure (HP) as a parameter with major influence. For further examination, the real experimentation is recommended, whenever it is possible.DOI: http://dx.doi.org/10.5755/j01.mech.18.6.3166
Highlights
In modern global market environment, it is essential for production companies to maintain or improve their competitiveness
In the point 5 from simulation results, all parameters are influential except cooling time (CT)
Influence of the parameter decreases from injection point to farthest point for real experiment
Summary
In modern global market environment, it is essential for production companies to maintain or improve their competitiveness. That requires transition from sequential to concurrent product development [1]. Due to changes in product and process development and adjustments in existing production systems, it is essential to choose proper methods that will be used for optimal product development from very beginning. This paper compares two methodologies for identification of process parameters that affect geometric deviations in plastic injection molding (PIM) for production of housing. Compared methodologies use Taguchi's approach to design of experiment (DOE) factorial experiments. While second one uses experimentation in real production conditions
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