Method for preserving the grinding characteristics of a grinding tool

Claim 1

Method for preserving the cutting or grinding characteristics of a cutting or grinding tool while maintaining the surface integrity of a metal workpiece at an accelerated rate of cutting or grinding comprising; effecting contact and relative motion between said workpiece and a cutting or grinding edge of a cutting or grinding tool; applying to the interface between the edge of said cutting or grinding tool and said workpiece, an effective amount of at least one inorganic compound which will undergo melting without decomposition and which is neither explosive nor flammable upon exposure to the frictional heat generated at said interface during periods of such contact and relative motion, said compound being free of sulfur and/or halogen, stable under conditions of use, and having a reversible solid--liquid phase transition in the range of 70° F. to 1000° F., a decomposition temperature of at least 100° F. above the melting temperature and a latent heat of melting greater than 10 cal/gm.; whereby, said compound, upon exposure to said fritional heat, undergoes melting and reduces the surface temperature generated at said interface by the heat absorption due to heating said compound to the melting point, the latent heat of melting of said compound and the additional heat absorption of the molten compound, while simultaneously forming a lubricating liquid film at said interface.