Transverse cylindrical grinding of a eutectic alloy

• Autor(a) principal: Bianchi, E. C. [UNESP]
• Data de Publicação: 2003
• Outros Autores: Vargas, V. L. [UNESP], Magagnin, T. C. [UNESP], Monici, R. D. [UNESP], Vicari Filho, O. [UNESP], De Aguiar, P. R. [UNESP], Jannone da Silva, E.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/S1678-58782003000100011; http://hdl.handle.net/11449/67170
• topic: Dressing; Grinding; Grinding wheel; Performance; Cutting; Grinding wheels; Superalloys; Wheel dressing; Eutectic alloys; Grinding (comminution)

We report herein on a comparison of the performance of two different grinding wheels (conventional and CBN) in the transverse cylindrical grinding of a eutectic alloy. Three cutting conditions were tested: rough, semi-finishing and finishing. The parameters of evaluation were the cutting force, roughness and wheel wear. The optimal cutting force and roughness values were obtained when grinding with the conventional wheel, due to the superior dressing operation performed under every cutting condition tested. Although the CBN wheel presented the best G ratio values, they were lower than expected owing to the inappropriate dressing operation applied. Excessive wheel corner wear was detected in both wheels, caused by the grinding kinematics (transverse grinding) employed. In terms of cutting force and roughness, the conventional wheel proved to be the better choice under the conditions tested. However, in terms of the G ratio, a cost analysis is crucial to determine whether the differences between the wheels justify the use of the CBN wheel, in which case the dressing operation requires improvement.