Investigación de las condiciones tribológicas en el conformado de elementos estructurales de Aceros Avanzados de Alta Resistencia en vehículos
[EN] The rapid evolution of materials and manufacturing processes, driven by global competition and new safety and environmental regulations has had an impact on the automotive structures (BIW) manufacturing. The need for lighter vehicles, whit more equipment, safer and at the same time friendly to...
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| Tipo de recurso: | tesis doctoral |
| Fecha de publicación: | 2015 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | español |
| OAI Identifier: | oai:riunet.upv.es:10251/59222 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/59222 |
| Access Level: | acceso abierto |
| Palabra clave: | Estampación Lubricación Rozamiento DP600 TWIP INGENIERIA DE LOS PROCESOS DE FABRICACION INGENIERIA MECANICA |
| Sumario: | [EN] The rapid evolution of materials and manufacturing processes, driven by global competition and new safety and environmental regulations has had an impact on the automotive structures (BIW) manufacturing. The need for lighter vehicles, whit more equipment, safer and at the same time friendly to the environment, covers the entire life cycle of the car. Carmakers and steelmakers agree that weight reduction is possible, and the solution go through the new Advanced High-Strength Steels. Thinner and stronger materials lead to higher demands on stamping, the manufacturing system most used manufacturing BIW parts. In this context of persistent innovation the lubrication of surfaces is a problem associated with the change. After the question about the best lubricant to form these new materials, it was researched about characteristics and performance of known simulation equipment. An edges of punch and die drawing simulator was used. Two materials have been selected of AISI portfolio. DP600 for being one of most used in BIW frames, and TWIP is a new steel to evaluate, and with an extraordinary strain. They are designed and manufactured tools for the manufacture of the specimens. It has defined a simplified deformation model. It was developed a measurement protocol with twelve parameters that compare the behaviour of lubricants in the simulator. It was selected the best for each type of material by Factorial Experiments Design and efficiency parameters have been used to select the best one. The model has been applied to the formed specimens and is able to answer the initial question. Simultaneously it has been able to make the technological evolution of system simulation and measurement protocol |
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