| Sumario: | In this study a failure originated during solidification process into the femoral stem
component of Hip Resurfacing prosthesis was investigated. Visual inspection, optical
microscopy, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS)
and a commercial software simulation ProCAST were carried out in order to determine the
cause and solution of this failure. The results exhibited hot tearing, shrinkage porosity and
metal oxide films due to inadequate heat dissipation during solidification process, as a
consequence of poor investment casting ceramic mold configuration. Also in this paper
was improved the casting design solving this kind of defects.
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