Análisis experimental del torneado de alta velocidad del acero AISI 1045 // Experimental analysis of high speed turning of AISI 1045 steel gears
Abstract
El objetivo de este trabajo es el estudio experimental de la evolución del desgaste del flanco de dos
insertos de carburo recubiertos y un cermet, durante el torneado en seco del acero AISI 1045 con 500 y
600 m/min de velocidad de corte. Los resultados fueron comparados utilizando el análisis de varianza y de
regresión. La investigación mostró un efecto significativo de la velocidad de corte y del tiempo de
maquinado en el desgaste del flanco. El mejor desempeño fue para el carburo recubierto con tres capas,
mientras que a elevada velocidad de corte el carburo con dos capas sufrió el mayor desgaste, lo cual se
debe a que cuando pierde sus recubrimientos el substrato del inserto queda desprotegido y el desgaste
crece rápidamente por la extremas condiciones del mecanizado por alta velocidad. Además, se plantean
recomendaciones del tiempo de maquinado de los insertos dadas las condiciones de elaboración por alta
velocidad.
Palabras claves: torneado de alta velocidad, desgaste del flanco, acero AISI 1045, estudio experimental.
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Abstract
This work deals with the experimental study of the flank wear evolution of two coating carbide inserts and a
cermet insert during the dry turning of AISI 1045 steel with 500 and 600 m/min cutting speed. The results
were compared using the variance and regression analysis. The investigation showed a significant effect
of cutting speed and machining time on the flank wear in high speed machining. The three coating layers
insert showed the best performance while the two layers insert had the worst behaviour of the cutting tool
wear at high cutting speed, this is because once the coating film is peeled off, the substrate of the insert
becomes uncovered and the wear grows rapidly due to the extreme machining conditions for high speed.
Besides, the machining time recommendations of inserts for the cutting conditions at high speed are
exposed.
Key words: high speed turning, flank wear, AISI 1045 steel, experimental study.
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