Projecto de um Modelo Matematico para Simulacao e Optimizacao em Computador deMoldes para Fabrico de Pecas Fundidas por 'Shell Moulding' (Product of a Mathematical Model for Simulation and Optimization by Computational Means of Moulds to the Manufacture o

摘要

The main goal of the thesis is the investigation of the possibility of onecomputational simplified mathematical model, adaptated to the analysis, simulation and the optimizing of the molding's heat transfer processes, to obtain cast pieces by the 'Shell Molding' process. In order to optimize the industrial application of the 'Shell Molding' foundry's technological process, and to obtain mold pieces with structural hardening zones by forced cooling 'Chill Hardening', with a greater resistance to the mechanical wear, a computational mathematical model has been developed. For the physical characteristics analysis of the molds and of the obtained pieces, experimental laboratorial technics have been developed for the simulation and data acquisition. The results achieved from the proposed mathematical model and those obtained by experimental processes allowed us to establish a positive correlation between both, which allows us to optimize the quality obtained by the 'Shell Molding' foundry industrial process.