On surface quality of engineered parts manufactured by additive manufacturing and postfinishing by machining

Abstract Additive manufacturing (AM) is one of the high-growth trends in manufacturing in the past years. Constantly, new technologies and improvements of the existing ones are being developed, resulting in a wide range of new industrial applications. In this way, AM applications have moved from prototyping to manufacturing of final products in a wide range of materials. However, the process still has some challenges that can limit their applications. For instance, the surface quality of the parts is poor, when comparing with other conventional manufacturing processes such as machining, due to problems such as the staircase effect. Postprocessing techniques are attracting the interest of the research community as a method for reducing the limitations of the process. Mainly, because of the recent use of metals in AM, machining has started to gain interest as a postprocessing method based on the excellent surface quality that can be obtained with the process, the current know-how, and the level of deployment of the technology. This chapter presents a comprehensive study on surface roughness obtained in AM, evaluating machining as a postprocessing method to improve the surface quality of additive manufactured parts.

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