Projeto de um moinho attritor programável de baixo custo para laboratório

Abstract

The present work contributed with the study for the development of an Attritor mill to be used in the powder metallurgy laboratory of the Federal University of Itajubá. Equivalent equipment on the market is all imported and at high cost. A programmable Attritor mill of low-cost for laboratory was designed to meet the technical requirements of assembly, operation and safety. The technical input requirements for project development are the grinding capacity of 50 g per cycle, operating in a rotating range between 150 to 600 rpm, using water or liquid nitrogen as refrigerant and controlled atmosphere. A CAD model was performed using CREO Parametric 3.0 software that allowed the analysis of possible interferences in the mechanisms. It was also discussed with the technical staff of the Federal University of Itajubá to design components that are easy to manufacture, assembly and low cost. The main components of the grinding system, such as grinding container, main shaft, impellers support shaft and impellers were designed using analytical and computational methods using ANSYS software (Structural Static). The standardized components were sized and specified according to suppliers' catalog. Finally, this work presented an application of the method developed with a practical example, discussing the results obtained.