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  Referencia 10464
Título: Unión de chapas de aluminio en la industria del automóvil - Una historia de 30 años
Título original: Joining Aluminum Sheet in the Automotie Industry - A 30 Year History
Autor: Gould J. E.
Resumen: Aluminum has been used in the automotive industry for more than half a century. During the last 30 years, however, interest in the use of aluminum has been coupled with needs for improved vehicle performance. This has largely focused on improved fuel economy, and by extension, weight reduction. Aluminum generally cannot be implemented in vehicle construction without an associated manufacturing infrastructure. A key element of that infrastructure is welding. Conventionally, resistance spot welding is the dominant joining technology for unitized vehicle construction. This paper reviews the impact of aluminum implementation on the joining technologies used in body-in-white construction. This review includes a discussion of the specific aluminum alloys used (nominally 5XXX and 6XXX sheet products, and 3XX cast products) as well as a discussion of candidate joining technologies. It is noted that assembly of aluminum sheet products is still dominated by resistance spot welding. Basic requirements for aluminum spot welding are discussed, as well as key manufacturing challenges. The state-of-the-art technology is described, including the impacts of new generation approaches that are entering the industry. A description is also provided of alternative resistance welding approaches that are applicable to aluminum automotive fabrication. The use of mechanical fasteners for aluminum construction is discussed. On emerging technologies, this paper also provides an overview of ultrasonic spot welding. This method is being investigated as a candidate replacement technology for resistance spot welding.
Idioma: Inglés     País: USA     ISBN / ISSN: 0043-2296     Año: 2012
Tipo: Artículo
Área: Materiales y Materias primas > Aleaciones ligeras (aluminio, titanio, magnesio...)
Subsectores de aplicación: · Automoción e industria auxiliar
Entidad: Edison Welding Inst, Columbus, OH 43212
Fuente: WELDING JOURNAL
Localización en fuente: Volume: 91 Issue: 1 Pages: 23S-S34 Published: JAN
Descriptores: Aluminum Alloys (aleaciones de aluminio); Body-in-White (carrocería); Resistance Welding (soldadura por resistencia); Mechanical Fastening (fijación mecánica); Ultrasonic Welding (soldadura ultrasónica)
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