Experimental Investigation of Wear and Structural Change During Hybrid Machining

Rodríguez Marín, Elena (2017). Experimental Investigation of Wear and Structural Change During Hybrid Machining. Proyecto Fin de Carrera / Trabajo Fin de Grado, E.T.S.I. Industriales (UPM), Madrid.

Descripción

Título: Experimental Investigation of Wear and Structural Change During Hybrid Machining
Autor/es:
  • Rodríguez Marín, Elena
Director/es:
  • González Fernández de Castro, Milagrosa
  • Praetzas, Christopher
  • Müller, Clemens
Tipo de Documento: Proyecto Fin de Carrera/Grado
Grado: Grado en Ingeniería en Tecnologías Industriales
Fecha: 2017
Materias:
Palabras Clave Informales: Hybrid Machining, Heat Assisted Milling, Cutting Tool Wear, Ti6Al4V
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Física Aplicada e Ingeniería de Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

This thesis aims at establishing the impact on the cutting tools from a macro- and microscopical point of view when milling Ti6Al4V using an hybrid process. Additionally, the microstructure of the workpiece after this procedure is submitted to analysis, too. The effect of the thermal cycle, that an hybrid procedure exerts on the cutting tool is on the focus of this work. This thermal cycle is intensiffed by the heat input of an inductor and the cooling effect of liquid CO2. Hybrid machining, is a new technique, developed to improve the machinability of certain diffcult to cut materials like titanium and its alloys. An additional heat input is used to soften them. Induction heat assisted machining is on development itself, so that the research on this topic is on its early stage. Previous examinations did not succeed in delivering unambiguous results. In order to be able to set adequate parameters for a good functioning of this technique, a better understanding of how hybrid machining affects the cutting tools is necessary. To observe the wear on the inserts, three sets of experiments are ran, two of them using different induction settings and the other one using minimum quantity lubrication to provide comparison with a current industrial working method. The used cutting tools and the workpiece are submitted to analysis in means of ank wear land evolution, crack examination and volume loss determination. Differences in the wear mechanisms were found; with higher temperatures at the cutting zone (around 200ºC), thermal cracks were more present than with lower ones. On the other hand, transverse cracking was less present with an increase of temperature.

Más información

ID de Registro: 45660
Identificador DC: http://oa.upm.es/45660/
Identificador OAI: oai:oa.upm.es:45660
Depositado por: Biblioteca ETSI Industriales
Depositado el: 28 Abr 2017 06:51
Ultima Modificación: 28 Abr 2017 06:51
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