González Haizea, Pereira Octavio, Fernández-Valdivielso Asier, López de Lacalle L Norberto, Calleja Amaia
Department of Mechanical Engineering, University of the Basque Country (UPV/EHU), Plaza Ingeniero Torres Quevedo 1, 48013 Bilbao, Spain.
CFAA-University of the Basque Country (UPV/EHU), Parque Tecnológico de Zamudio 202, 48170 Bilbao, Spain.
Materials (Basel). 2018 Sep 6;11(9):1638. doi: 10.3390/ma11091638.
Thermoresistant superalloys present many challenges in terms of machinability, which leads to finding new alternatives to conventional manufacturing processes. In order to face this issue, super abrasive machining (SAM) is presented as a solution due to the fact that it combines the advantages of the use of grinding tools with milling feed rates. This technique is commonly used for finishing operations. Nevertheless, this work analyses the feasibility of this technique for roughing operations. In order to verify the adequacy of this new technique as an alternative to conventional process for roughing operations, five slots were performed in Inconel 718 using flank SAM and flank milling. The results showed that flank SAM implies a suitable and controllable process to improve the manufacture of high added value components made by nickel-based superalloys in terms of roughness, microhardness, white layer, and residual stresses.
耐热超级合金在可加工性方面存在诸多挑战，这促使人们寻找传统制造工艺的新替代方法。为应对这一问题，提出了超级磨料加工（SAM）作为一种解决方案，因为它结合了使用磨削工具的优点和铣削进给速度。该技术通常用于精加工操作。然而，本工作分析了该技术用于粗加工操作的可行性。为了验证这种新技术作为传统粗加工工艺替代方法的适用性，使用侧刃超级磨料加工（flank SAM）和侧刃铣削在因科镍合金718上加工了五个槽。结果表明，侧刃超级磨料加工意味着一种合适且可控的工艺，能够在粗糙度、显微硬度、白层和残余应力方面改善由镍基超级合金制造的高附加值部件的加工。
