Aiming at the overheating and low machining efficiency problems in grinding superalloys

an internal cooling grinding wheel with a replaceable abrasive ring is proposed. To improve the flow characteristic and heat transfer performance of fluid in the grinding arc zone

surface structure of the ring and the internal flow channel outlet shape are designed based on the sunflower seed phyllotaxis configuration model. The flow field distribution model in grinding arc zone is established based on the computational fluid dynamics (CFD) method

finally the grinding tests of superalloy are carried out. Results indicate that abrasive cluster of phyllotaxis configuration leads to enhanced flow and cooling characteristics

compared with the circular flow channel

better cooling and lubrication effects are obtained by the rectangular flow channel

and the heat exchange efficiency is more remarkable as the grinding speed increases. Average grinding temperature and surface roughness of the workpiece are reduced by 24.12% and 18.50% respectively

and the machined surface morphology is smoother and more regular.