Internal stresses analysis in electroformed nikel shells for thermoplastics inyection mold core (rapid tooling)
Keywords:electroforming, internal stresses, rapid tooling, cores, electrodeposition.
This study deals with a research field started at the LFI (Laboratorio de Fabricación Integrada) of the ULPGC (Universidad de Las Palmas de Gran Canaria). Its aim is to analyse and propose improvements in the electroformed nickel cores manufacture. The main application of these cores is to be used as plastic injection molds. It has been considered an important part of this study taking under consideration internal stresses that appear in the nickel electroformed core. These stresses play a determinant role towards reaching a dimensional and resistant quality standard of the shells, which will be later transformed into cores. The investigation includes not only a theoretic study but also an experimental one. The testing method has the remarkable advantage of a wide industrial application because of its simplicity, low cost and reproducibility of the electrolytic bath actual conditions.
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