Methods for producing armored metal tools

Abstract

Abstract METHODS FOR PRODUCING ARMORED METAL TOOLS CONSISTING OF A TOOL STRUCTURE COMPOSED OF A BASE METAL HAVING OVER AT LEAST A SURFACE PORTION THEREOF, A HARD WEARING, DUCTILE, AND ADHERENT, ABRASIVE COATING, AND ACCORDING TO WHICH SAID SURFACE PORTION OF SAID BASE METAL IS COATED WITH A PASTE FLUX ADHESIVE AND WITH PARTICLES OF A POWDERED MATRIX METAL, APPLIED SEPARATELY AND SEQUENTIALLY OR IN ADMIXTURE, AND TO WHICH COATING IS APPLIED AN OVERCOATING OF ABRASIVE PARTICLES OF A HARD, HIGH MELTING, DIAMOND SUBSTITUTE MATERIAL, SUCH AS TUNGSTEN CARBIDE PARTICLES AND THE LIKE, THE SO COATED PORTION OF THE TOOL, OR ALTERNATIVELY THE ENTIRE TOOL, BEING THEN HEATED TO TEMPERATURE SUFFICIENTLY HIGH TO FUSION BOND SAID MATRIX METAL PARTICLES TO ONE ANOTHER AND TO SAID BASE METAL AND INTO A MATRIX METAL LAYER EMBEDDING SAID ABRASIVE PARTICLES THEREIN, THE HEATED TOOL PORTION OR TOOL BEING THEN RAPIDLY COOLED TO AMBIENT TEMPERATURE PERMANENTLY TO BOND SAID MATRIX METAL LAYER TO SAID BASE METAL AND PERMANENTLY TO EMBED SAID ABRASIVE PARTICLES IN SAID MATRIX METAL LAYER, THE THICKNESS OF SAID MATRIX METAL LAYER BEING SO CONTROLLED IN RELATION TO THE PARTICLE SIZE OF SAID ABRASIVE PARTICLES, AS ONLY PARTIALLY TO EMBED SAID ABRASIVE PARTICLES THEREIN, WHEREBY SAID ABRASIVE PARTICLES PROJECT FROM SAID LAYER TO FORM A MYRIAD OF SHARP CUTTING EDGES. THE BASE METAL MAY COMPRISSE A HEAT TREATABLE, FERRITIC STEEL OR ALLOY STEEL, WHICH HARDENED BY THE HEATING AND COOLING CYCLE AFORESAID AND WHICH MAY BE THEREAFTER TEMPERED TO A DESIRED DEGREE OF HARDNESS AND DUCITILITY.

Inventors

• 👤 Chester H Dawson
• 👤 Robert T Catlin
• 👤 Robert O Swain
• 👤 Robert J Turton

Bibliographic Details