The microstructure evolution of ground subsurface in AISI D2 steel surface grinding was investigated in this study. The effect of grinding parameters and grain size of wheels on white layer formation was presented. The surface integrity parameters of microstructure and microhardness were measured and analyzed. It was found that the white layer and dark layer may occur more easily when using finer grain size of wheel and white layer and dark layer may occur with the increase of grinding parameters, such as wheel rotation speed, workpiece speed and depth of cut.
Grinding experiments were carried out in wet, with MQL, in dry, with a spray of dry ice particles and various gases to examine influence of grinding atmospheres on the grinding performance in the combination surface grinding of steel and WC with a diamond wheel. From the experimental results, it was found that the grinding with inert gas injection which reduces an oxygen concentration at the grinding point would proceed a processing at more stable grinding force, resulting in less wear of the diamond abrasives.
A grain-arranged diamond wheel is developed and grinding performance of the wheel
against industrial pure aluminum, one of the most hard-to-grinding materials, is investigated. The
developed wheel efficiently ground pure aluminum without adhesion even when general-purpose
grinding fluid, Type A3-1, was used. Moreover, wheel wear was not observed during the
experiment, and grinding energy was extremely low. By using the developed wheel, a mirror
surface can be easily obtained by one-pass surface grinding with very low table speed.
Experimental comparison of MO40 steel surface grinding performance under different cooling techniques