A procedure for hardening steel 45 by plastic deformation using a simple roller
Procedimiento para endurecer el acero 45 mediante la deformación plástica con rodillo simple
DOI:
https://doi.org/10.15446/ing.investig.v28n1.14863Keywords:
plastic deformation, rolling, variable, experimental design, burnishing, slip (en)deformación plástica, rodadura, variables, diseño de experimento, acritud, deslizamiento (es)
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This work presents the techniques used in an experimental design leading to evaluating the behavior of an independent variable force (P), ranging from 500 up to 2500 N, 27 minimum revolution number (n), average 54 and maximum 110 rev/min and 0.075, 0, 125 and 0.25 mm/rev advance for determining the dependent hardness (H) pattern when AISI 1045 steel test tubes were subjected to surface rolling for creating a compressive state deforming and increasing its resistance to abrasive wear and fatigue. The variables involved in the process were statistically analysed, revealing increased hardness ranging from 220 up to 262 HV. Optical microscopy was used for analysing the effect of hardening caused by deformation, establishing a mechanism for hardening steel by the elements in the crystalline network sliding due to burnishing.
El trabajo muestra las técnicas empleadas en un diseño de experimento que permite evaluar el comportamiento de las variables independientes fuerza (P), desde 500 hasta 2500 N, numero de revolución (n) mínimo 27, medio 54 y máximo 110 rev/min y avance (s), 0,075, 0, 125 y 0,25 mm/rev, para determinar el comportamiento de la variable dependiente dureza (H), cuando una probeta de acero AISI 1045 es sometida a tratamiento superficial por rodadura para crear un estado compresivo que lo deforme e incremente su resistencia al desgaste y la fatiga. Se realiza el procesamiento estadístico de las variables involucradas en el proceso donde se demuestra el incremento de la dureza desde 220 hasta 262 HV. Se empleó el método de microscopia óptica para analizar el efecto del endurecimiento por deformación, estableciendo el mecanismo de endurecimiento del acero por el deslizamiento de los granos en la red cristalina por el fenómeno de la acritud.
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Copyright (c) 2008 Tomás Fernández Columbíe, Isnel Rodríguez González, Dayanis Alcántara Borges, Esther Fernández

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