Wheel dryers, with the desiccant bonded into a porous wheel
rotating steadily through the drying and regeneration stages, have a reputation for greater drying stability because the desiccant is at a constant level of activity as it passes through the drying stage rather than the stepwise efficiency between regeneration stages of a traditional desiccant dryer.
So, ideally one wants to use a very porous wheel
for maximum stock removal without burning and cracking the workpiece.
The patented KP bonding process uses hollow glass spheres rather than traditional aluminum oxide as a filler material to provide additional strength to the bond post, creating a porous wheel
finish that resists loading and burning.
VORTEX technology, which represents a complete breakthrough from classical porous wheel
technologies, achieves optimum grain spacing without artificial pore inducers and delivers wheels that excel in grinding applications when applied to vitrified products with large contact areas.
Experimental Study on Porous Metal Bonded Diamond Grinding Wheels (II) - Grinding Performance of Porous Wheels