Abstract
In the aeronautical industry, many components are subjected to abrasive machining processes to ensure surface integrity. However, many of these components are manufactured from titanium alloys, such as the Ti-6Al-4V alloy, which is considered a difficult material to machine due to its low thermal conductivity, high mechanical strength, and chemical reactivity with ceramic materials. As dressing one of major factors governing grinding, the proper selection of dressing parameters for the abrasive wheel is crucial for the surface quality of difficult-to-machine materials as well as the loading of the abrasive wheel. In this sense, the present work aimed to evaluate the effects of different dressing conditions of a SiC grinding wheel on the surface integrity of the Ti-6Al-4V alloy. A fliesen dresser, two different overlap ratio values (Ud = 3 and Ud = 12), and two depth of dressing cuts (ad = 20 µm and ad = 40 µm) were employed in the experiments. From the analysis of the results, it was verified that the change in the grinding wheel conditioning from an aggressive dressing (Ud = 3 and ad = 40 µm) to a soft dressing condition (Ud = 12 and ad = 20 µm) generated a drop of 53.74% in the roughness values, oriented grooves on the ground surface, reduction in thermal dams below the grinding interface, and an increase of 65.93% in the G ratio. Therefore, the results showed that the change in the conditioning of the SiC grinding wheel through the dressing can improve Ti-6Al-4V alloy grindability.
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Acknowledgements
Authors are grateful to Alcar Abrasives and Blaser Swisslube Brasil for supporting this work with donation of grinding wheels and coolant, respectively.
Funding
The authors are grateful to the CAPES PROEX; CAPES PrInt–UFU (NOVOS MATERIAIS E TECNOLOGIAS PARA A INDÚSTRIA E UMA SOCIEDADE CONECTADA); CNPq Universal Call process no. 426018/2018–4, CAPES Program scholarship process no. 88882.349837/2019–01, and Research Productivity Grant, process no. 310264/2019–7, FAPEMIG PPM-00492–18; and the Post Graduate Program of Mechanical Engineering from UFU for financial support.
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Pereira, M.F., Abrão, B.S., Abrão, A.S. et al. Influence of grinding wheel conditioning on the grindability of Ti-6Al-4V alloy. Int J Adv Manuf Technol 125, 1531–1542 (2023). https://doi.org/10.1007/s00170-022-10790-3
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DOI: https://doi.org/10.1007/s00170-022-10790-3