Publicación: A importância da soldadura de termoplásticos: um estudo de comparação de processos com caraterísticas distintas
Fecha
2022
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info:eu-repo/semantics/openAccess
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['Universidad Nacional de Educación a Distancia (España)', 'Universidad Politécnica de Madrid. Departamento de Ingeniería Mecánica']
Resumen
Três dos processos de soldadura mais utilizados na ligação de termoplásticos modernos foram analisados e comparados neste trabalho, concretamente a soldadura por gás quente (HGW), a soldadura por raio laser (LBW) e a soldadura por fricção (FSW). Os processos referidos foram utilizados na soldadura de vários materiais termoplásticos distintos, dando foco em apenas três desses materiais, tais como: polipropileno (PP), polietileno (PE) e policloreto de vinil (PVC). A qualidade obtida nas diferentes soldaduras foi avaliada recorrendo a uma análise visual, bem como através de ensaios de resistência à tração. Foram também realizados ensaios de dureza de Vickers às juntas soldadas, que revelaram algumas alterações microestruturais. O estudo efetuado teve como finalidade melhorar o conhecimento dos mecanismos envolvidos na execução dos processos de soldadura utilizados e na análise da resistência das juntas soldadas.
Three of the most commonly used welding processes for joining modern thermoplastics were analysed and compared in this work, namely hot gas welding (HGW), laser beam welding (LBW) and friction welding (FSW). The aforementioned processes were used in the welding of several different thermoplastic materials, focusing on only three of these materials, such as: polypropylene (PP), polyethylene (PE) and polyvinyl chloride (PVC). The quality obtained in the different welds was evaluated using a visual analysis, as well as through tensile strength tests. Vickers hardness tests were also carried out on the welded joints, which revealed some microstructural changes. The study carried out aimed to improve the knowledge of the mechanisms involved in the execution of the welding processes used and in the analysis of the resistance of the welded joints.
Three of the most commonly used welding processes for joining modern thermoplastics were analysed and compared in this work, namely hot gas welding (HGW), laser beam welding (LBW) and friction welding (FSW). The aforementioned processes were used in the welding of several different thermoplastic materials, focusing on only three of these materials, such as: polypropylene (PP), polyethylene (PE) and polyvinyl chloride (PVC). The quality obtained in the different welds was evaluated using a visual analysis, as well as through tensile strength tests. Vickers hardness tests were also carried out on the welded joints, which revealed some microstructural changes. The study carried out aimed to improve the knowledge of the mechanisms involved in the execution of the welding processes used and in the analysis of the resistance of the welded joints.
Descripción
Categorías UNESCO
Palabras clave
soldadura, termoplásticos, HGW, LBW, FSW
Citación
Centro
E.T.S. de Ingenieros Industriales
Departamento
Mecánica