Diseño y puesta a punto de un equipo de soldadura por fricción rotacional

Eng: Traditional welding techniques depend on multiple variables, for example, the expertise of the welder, the heat input and the filler metal, to obtain joints that have excellent mechanical and metallographic properties, a failure in these variables can cause defects and important indications that compromise the integrity of an entire operation. Solid state welding meets these expectations, presenting multiple advantages. That is why the design and construction of a rotational friction welding (FRW) equipment was proposed for the development of this technique at an investigative level to later apply it in the Colombian industry. The design involved mechanical calculations for test-tubes smaller than 14mm in diameter and the use of tools such as AUTOCAD for equipment modeling and layout, as well as user manuals that document every aspect of operation and handling of the equipment. During construction, constant trials and error tests were performed out to calibrate the equipment. At the same time, the dimensions of the cylindrical test-tubes were calculated for both welding and tension tests. Thus, the evaluation of the performance achieved was carried out through welding tests to cylindrical steel test-tubes AISI-SAE 1020 with a diameter of 14mm, under a heating pressure of 2.5 bar and forging pressure of 40 bar compared at 1500 and 1900 RPM. Finally, the weld quality was evaluated by hardness tests, stress-strain tests, visual inspection analysis through metallography for the sections of interest and comparison of the decrease of the test-tube size, including the size of the heating bands. The results showed that for an AISI-SAE 1020 steel under the mentioned parameters, the most indicated rotation speed is 1500 RPM, obtaining a difference of 5.32% in the tensile strength with respect to that of the base metal, and in the interface of the weld presents an increase in hardness of 29.82%.

• Autores: Faustino Molina, Katherin Johanna
• Tipo de recurso: Trabajo de grado de pregrado
• Fecha de publicación: 2022
• Institución: Universidad Pedagógica y Tecnológica de Colombia
• Repositorio: RiUPTC: Repositorio Institucional UPTC
• Idioma: spa
• OAI Identifier: oai:repositorio.uptc.edu.co:001/8854
• Acceso en línea: http://repositorio.uptc.edu.co/handle/001/8854
• Palabra clave: Ingeniería Metalúrgica -- Tesis y disertaciones académicas; Recristalización (Metalurgia); Forja; Máquinas herramientas; Soldadura por fricción; Ingeniería Metalúrgica -- Tesis y disertaciones académicas; Diseño; Presión de forja; Presión de calentamiento, variables de proceso, pruebas mecánicas.; Rotational friction welding; Friction; Design; Forging pressure; Heating pressure; Process variables; Mechanical tests
• Rights: openAccess
• License: Copyright (c) 2022 Universidad Pedagógica y Tecnológica de Colombia