Performance of the internal-cooling grooved grinding wheel with patterned abrasives

In view of the defects such as material bonding, work hardening, and tensile residual stress on the ground surface due to excessive temperature during grinding of superalloys, an internal-cooling grooved grinding wheel was designed and fabricated. Several abrasive patterns with different geometries (random, oblique, circular staggered, and diamond staggered) were proposed and prepared to compare its effect on the grinding performance. Grinding experiments of nickel-based superalloy Inconel718 revealed that the abrasive pattern has a significant influence on the grinding results. Among the four abrasive patterns, the diamond-staggered pattern obtains the lowest grinding temperature and best machined surface integrity, which is conducive to the improvement of grinding performance of the internal-cooling grooved grinding wheel.