Vitrified bond
Bond is a binding agent and filling agent. Bond type has defining value for strength and operating regime of abrasive tool. Inorganic bond - vitrified - has high flame, water and chemical resistance and relatively high hardness.
Depending on behavior during thermal processing it is divided into melting (vitriform) and sintering (porcelain-like). Melting bond after cooling transforms into glass, sintering bond melts only partially and on the content is close to porcelain.
Vitrified bond is multicomponent mixture made in particular proportion from crushed raw materials: refractory and vitrified clays, fusing agents (feldspar, borax glass, talcum and other materials). Disadvantage of this bond is its high fragility due to which the wheels cannot be used at shock load (snag grinding, cutting-off and force grinding). Comparatively low bending strength limit do not allow to apply such wheels in cutting processing, because they can be broken because of side load (at bending).
JSC «Volzhsky Abrasive Works»
