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Analysis of the Surface of Parts Injected with ABS and Treated with Acetic Acid: Influence of Process Settings

  • R. P. BomEmail author
  • E. H. Murakami
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Part of the Augmented Vision and Reality book series (Augment Vis Real, volume 4)

Abstract

This study examined the influence of process settings of Acrylonitrile Butadiene Styrene (ABS) injection molding on the surface residual stress generated during the filling, packing, and cooling phases. The thickness of layers of Cu–Ni–Cr electro deposited by optical microscopy was determined. Several specimens were injection molded with ABS and treated with different process parameters. Specimen surfaces were treated with glacial acetic acid for 2 min at room temperature. Analysis of surfaces by electron microscopy was performed. This enabled the identification of the influence of injection parameters on surface morphology after treatment with acid. The correlation of results with the surface residual stress obtained through simulation was determined. The method used for determining surface residual stress which damages the electro deposit process originated from injection mold was experimentally determined upon the absence or presence of surface bleaching. Upon the interaction of statistical, numerical, and experimental tools, an equation and a response surface model were established. From this surface, following an isoline of residual stress, it was experimentally demonstrated that it is possible to obtain specimens with non-bleached surfaces with low injection time and packing pressure equal to injection pressure.

Keywords

Residual stress Acetic acid Injection settings ABS 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Mechanical Engineering DepartmentCenter for Science and Technology—CCT, University of the State of Santa Catarina—UDESC, Campus Universitário Avelino MarcanteJoinvilleBrazil
  2. 2.Whirlpool S.A. Compressor PlantJoinvilleBrazil

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