Vitrified grinding wheels

Sharpening stones Sharpening stone is a general name given to any stone natural or artificial to be used by hand. Manufactured abrasive stones are made by the same methods employed in grinding wheel production. The finished stones as they come from the vitrifying kilns are rubbed on circular cast iron revolving beds to smooth their surfaces (Jacobs 1928)... 

ELID grinding is more stable than conventional grinding from the removal rate value viewpoint. Material removal rates of 250 mm /min up to 8000 mm /min were reported. The chip thickness is of an order of 1-10 nm. Stock removal rate increases with the increase in the number of passes, stiffness of machine tool, and larger grit sizes of the wheels. Cast-iron-bonded wheels have a larger stock removal rate yet a lower grinding force as compared to a vitrified bonded grinding wheel. 

Wheel Grinding. Selection of wheel, wheel speed, and fluid is important. For hard wheel grinding, vitrified bonded wheels are the most effective. Aluminum oxide (AI2O3) wheels give good results when limited to grinding speeds of 10 m/s (2000 sfin) or less. Silicon carbide (SiC) wheels can be used at 20 to 30 m/s (4000 to... 

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