Method of infiltrating powder metal parts

Claim 1

IN A METHOD FOR INFILTRATING A POROUS FERROUS PART WITH CUPEROUS METAL WHEREIN PITTING AND CHANNELING IS ENTIRELY ELIMINATED, THE STEPS COMPRISING; PROVIDING A PREDETERMINED QUANTITY OF CUPREOUS METAL MIXED WITH SUFFICIENT IRON TO COMPLETELY SATISFY THE DISSOLVING ACTION OF THE COPPER FOR IRON AT THE TEMERATURE OF INFILTRATION, SUPERIMPOSING THE CUPREOUS METAL WITH THE IRON ASSOCIATED THEREWITH IN A SEPARATE ZONE IMMEDIATELY ADJACENT AND ABOVE THE POROUS FERROUS PART TO BE INFILTRATED, HEATING SIMULTANEOUSLY THE POROUS FERROUS PART AND THE CUPREOUS METAL WITH THE IRON ASSOCIATED THEREWITH UNDER THE SAME ENVIRONMENT AND TO A TEMPERATURE ABOVE THE MELTING POINT OF THE CUPREOUS METAL AND BELOW THE MELTING POINT OF THE POROUS FERROUS PART, MAINTAINING SAID CONDITIONS FOR A TIME SUFFICIENT TO CAUSE THE CUPREOUS METAL TO BECOME MOLTEN AND TO DISSOLVE SUFFICIENT OF THE IRON ASSOCIATED THEREWITH TO COMPLETELY SATISFY THE DISSOLVING ACTION OF COPPER FOR IRON AT THE ENVIRONMENT TEMPERATURE, AND THEN FLOWING THE MOLTEN CUPREOUS METAL WITH THE IRON DISSOLVED THEREIN INTO CONTACT WITH THE HEATED POROUS FERROUS PART TO BE IMPREGNATED WHEREUPON THE CUPREOUS METAL IS DRAWN INTO THE POROUS FERROUS PART BY CAPILLARITY WITHOUT PITTING OR CHANNELING THE FERROUS PART.