Análise de falha em hastes para brocas empregadas na perfuração de rochas

Abstract

Among the various equipment used in the extraction and exploration of minerals, the drill and rod assembly have wide use and importance in the search for new deposits. The drills are heavy duty equipment used in harsh conditions on mechanical stresses and abrasive, are responsible for drilling of various types of ground, for instance rocky. The rods working in conjunction with the drills, enabling the achievement of greater depths. The Reinarda Mining fowarded to the LED (Destructive Testing Laboratory, da FEMAT - School of Materials Engineering, CAMPUS Marabá – at this time coordinated by Prof. Msc. Márcio Corrêa), five fractured rod drills, to be performed the analysis of failures, in order to determine the possible causes that led to fail. To this were done visual analysis, chemical analysis, metallography, SEM and microhardness test. According to the results, it can be stated that the method and / or techniques used in the fabrication of the rods do not provide good quality products and efficient.