Abstract: The nanocomposite technology was applied to the experimental research of super highspeed vitrified bond CBN grinding wheel， and the nanovitrified bond with markedly improved mechanical and thermal properties was developed. Compared with traditional grinding wheel vitrified bond， the nanovitrified bond， possessing the strength of wheel section samples of about 8823MPa and refractoriness of 795℃， has significant advantages in the refractoriness， thermal expansion coefficient， invasion and bending strength. This super highspeed nanovitrified bonded grinding wheel also showed excellent performance in the experiments of grinding several hardtogrind materials such as stainless steel， titanium and highspeed steel.

Key words: super highspeed, CBN grinding wheel, vitrified bond, nanomaterials, simulation of abrasion wear