Design and evaluation of an internal-cooling grooved grinding wheel. (January 2022)

• Record Type: Journal Article
• Authors: Peng, Ruitao; Zhao, Linfeng; Tong, Jiawei; Chen, Meiliang; Zhou, Minzi; Li, Ao
• Is Part Of: Journal of manufacturing processes. Volume 73(2022)
• Page Start: 1
• Page End: 16
• Publication Date: 2022-01
• Subjects: Grinding wheel -- Internal cooling -- Phyllotactic abrasive pattern -- Internal channel diameter -- Superalloy; Production management -- Data processing -- Periodicals; Manufacturing processes -- Periodicals; Procestechnologie; Productietechniek; Production -- Gestion -- Informatique -- Périodiques; Fabrication -- Périodiques; Manufacturing processes; Production management -- Data processing; Periodicals; 670.5
• DOI: 10.1016/j.jmapro.2021.10.061
• Languages: English
• ISSNs: 1526-6125

Abstract

Abstract: To improve the grinding performance of superalloys, a bowl-type internal-cooling grinding wheel with a phyllotactic abrasive pattern has been developed. The internal structure of the grinding wheel is optimized as a two-stage cavity with eight transitional holes by computational fluid dynamics (CFD). And the outlet of the internal channel is set at the center of the abrasive zone to enhance the heat transfer of the coolant. Innovatively, the internal channel is prepared as an independent module through 3D printing technology to explore the influence of different channel diameters (1, 2, 3 mm) on the grinding performance of the grinding wheel. The simulation results show that when the diameter of internal channel is 1 mm, the coolant will be unevenly distributed within the grinding zone. As the diameter of the internal channel increases, the fluidity of the coolant increases, and the phyllotactic abrasive pattern can promote the uniform flow of the coolant within the grinding zone. The experiments of grinding Inconel 718 (flood, internal cooling) demonstrate that the internal cooling method provided better cooling and lubrication performance. Compared to the flood cooling, the grinding temperature of the 1- and 3 mm-diameter internal channels decreased by 23.0%, 48.2%, and the surface roughness decreased by 24.6% and 58.7%, respectively. The residual compressive stress on the machined surface increased by 122.36 MPa and 279.51 MPa, respectively. Further, with the increase of internal-channel diameter, the workpiece surface morphology becomes smoother.