Method for producing rugous and abrasive surfaces and product thereof

Claim 1

A METHOD FOR PREPARING A RUGOUS SURFACE, COMPRISING A PLURALITY OF DISCRETE FERROMAGNETIC WELDABLE PARTICLES OF HARD METAL SELECTED FROM THE GROUP CONSISTING OF CAST HEMATITE, TUNGSTEN-CARBODE, MOLYBDENUM CARBIDE AND COBALT COATED DIAMOND HAVING SHARP, AND CONTINGENTLY CUTTING, EDGES AND WELDED METALLURGICALLY TO A STEEL PLATE BY MEANS OF A METAL IN A PERMANENTLY FLUID STATE OF MELT SELECTED FROM THE GROUP CONSISTING OF PURE METALS AND ALLOYS OF TIN, LEAD, ZINC, COPPER AND SILVER HAVING MELTING POINTS BETWEEN 180 AND 1100*C., WHICH METHOD COMPRISES THE SUCCESSIVE STEPS OF: SUBMITTING SAID STEEL PLATE BOTH TO BLOODING BY THE BATH OF METAL IN A PERMANENTLY FLUID STATE OF MELT, AND TO THE MAGNETIC FIELD OF AT LEAST ONE MAGNET WHICH FIRMLY AND PROVISIONALLY HOLDS SAID FERROMAGNETIC PARTICLES SPREAD ON THE PORTIONS OF SAID PLATE TO BE MADE RUGOUS AND WHICH ORIENTATES SAID SPREAD PARTICLES SUBSTANTIALLY PERPENDICULARLY TO SAID PLATE WITH RESPECT TO THEIR MAJOR DIMENSION, THE TEMPERATURE OF SAID BATH BEING LOWER THAN THE CURIE-POINT OF THE METAL OF SAID PARTICLES AND GREATER THAN 180*C. CLEARING SAID THUS PREPARED SUPPORT FROM SAID BATH OF FLUID METAL, AND, MAINTAINING THE FIELD OF SAID MAGNET UNTIL SAID ORIENTATED METAL PARTICLES ARE PERMANENTLY FIXED TO SAID PLATE, TO OBTAIN A RUGOUS SURFACE WITH THE REQUIRED AMOUNT OF ALLOY METAL AT THE POINT OF CONTACT BETWEEN EACH PARTICLE AND SAID PLATE.

Claim 2

A METHOD FOR PREPARING A RUGOUS SURFACE, COMPRISING A PLURALITY OF DISCRETE FERROMAGNETIC WELDABLE PARTICLES OF HARD METAL SELECTED FROM THE GROUP CONSISTING OF CAST HEMATITE, TUNGSTEN-CARBODE, MOLYBDENUM CARBIDE AND COBALT COATED DIAMOND HAVING SHARP, AND CONTINGENTLY CUTTING, EDGES AND WELDED METALLURGICALLY TO A STEEL PLATE BY MEANS OF A METAL IN A PERMANENTLY FLUID STATE OF MELT SELECTED FROM THE GROUP CONSISTING OF PURE METALS AND ALLOYS OF TIN, LEAD, ZINC, COPPER AND SILVER HAVING MELTING POINTS BETWEEN 180 AND 1100*C., WHICH METHOD COMPRISES THE SUCCESSIVE STEPS OF: SUBMITTING SAID STEEL PLATE BOTH TO BLOODING BY THE BATH OF METAL IN A PERMANENTLY FLUID STATE OF MELT, AND TO THE MAGNETIC FIELD OF AT LEAST ONE MAGNET WHICH FIRMLY AND PROVISIONALLY HOLDS SAID FERROMAGNETIC PARTICLES SPREAD ON THE PORTIONS OF SAID PLATE TO BE MADE RUGOUS AND WHICH ORIENTATES SAID SPREAD PARTICLES SUBSTANTIALLY PERPENDICULARLY TO SAID PLATE WITH RESPECT TO THEIR MAJOR DIMENSION, THE TEMPERATURE OF SAID BATH BEING LOWER THAN THE CURIE-POINT OF THE METAL OF SAID PARTICLES AND GREATER THAN 180*C. CLEARING SAID THUS PREPARED SUPPORT FROM SAID BATH OF FLUID METAL, AND, MAINTAINING THE FIELD OF SAID MAGNET UNTIL SAID ORIENTATED METAL PARTICLES ARE PERMANENTLY FIXED TO SAID PLATE, TO OBTAIN A RUGOUS SURFACE WITH THE REQUIRED AMOUNT OF ALLOY METAL AT THE POINT OF CONTACT BETWEEN EACH PARTICLE AND SAID PLATE.