Grinding performance of the improved body-armor-like wheel during high-shear and low-pressure grinding for Inconel 718

A novel grinding technique known as high-shear and low-pressure grinding employing body-armor-like tools represents pioneering advancement in the precision and ultra-precision machining of Inconel 718. It employs the clustering effect of micro-nano particles in the abrasive system to remove workpiece material, which has been validated to be different from traditional grinding methods. The ground surface quality, such as surface roughness, was well investigated. However, a comprehensive assessment of the performance in high-shear and low-pressure grinding remans insufficient. Key metrics-including specific grinding force, force ratio, specific material removal rate, temperature, specific grinding energy, and the interrelationships among these parameters, have yet to be systematically investigated. Furthermore, the underlying effect mechanism of wheel parameters and grinding conditions on grinding performance has not yet been fully clarified. These limitations hinder a thorough understanding of this innovative grinding process. Hence, in this work, a deeply understand of the high-shear and low-pressure grinding performance were conducted. The key grinding performance indicators of the body-armor-like wheel were discussed. Influence principles of wheel parameters and grinding parameters on grinding performance indicators were studied through grinding experiments. The optimum wheel parameters and grinding parameters were obtained. It was found that workpiece surface roughness was reduced to 0.062 μm from 0.320 μm, a fine surface was achieved after grinding, the ratio of the tangential grinding force to normal grinding force reached 0.395, the grinding temperature was only 43.2°C under the given parameters. This study contributed to the deeply understand the high-shear and low-pressure grinding performances of the body-armor-like wheel.