Methods of molding powders of metal character

Claim 1

THE METHOD OF MAKING A POWDERED ARTICLE LOF CONTROLLED SIZE AND POROSITY WHICH COMPRISES ADMIXING FROM 50 TO 65 PARTS BY VOLUME OF POWDERED METAL WITH 35 TO 50 PARTS BY VOLUME OF A COMPLETELY DISTILLABLE HEAT FUGITIVE BINDER COMPOSED OF A DEPOLYMERIZABLE POLYMERIZED-MONOOLEFINIC THERMOPLASTIC RESIN AND A DISTILLABLE HYDROCARBON WAX WHICH WILL NOT DISSOLVE OR SWELL THE RESIN, SAID BINDER INGREDIENTS HAVING VAPORIZATION TEMPERATURES CLOSE TO THE PLASTIC RANGE THEREOF, HEATING THE ADMIXED MASS TO A TEMPERATURE ABOVE 100* C. AND ABOVE THE SOFTENING POINTS OF THE BINDER INGREDIENTS BUT BELOW THEIR VAPORIZATION TEMPERATURES, EXTRUDING THE THUS HEATED MASS UNDER LOW PRESSURES TO FORM AN ARTICLE OF DESIRED SHAPE, AND SINTERING THE ARTICLE IN A NONOXIDIZING ATMOSPHERE AT TEMPERATURE ABOVE THE VAPORIZATION TEMPERATURE OF THE BINDER BUT BELOW THE MELTING POINT OF THE METAL TO COMPLETELY ELIMINATE THE BINDER WITHOUT ACTION OF NASCENT CARBON ON THE METAL.

Claim 2

THE METHOD OF MAKING A POWDERED ARTICLE LOF CONTROLLED SIZE AND POROSITY WHICH COMPRISES ADMIXING FROM 50 TO 65 PARTS BY VOLUME OF POWDERED METAL WITH 35 TO 50 PARTS BY VOLUME OF A COMPLETELY DISTILLABLE HEAT FUGITIVE BINDER COMPOSED OF A DEPOLYMERIZABLE POLYMERIZED-MONOOLEFINIC THERMOPLASTIC RESIN AND A DISTILLABLE HYDROCARBON WAX WHICH WILL NOT DISSOLVE OR SWELL THE RESIN, SAID BINDER INGREDIENTS HAVING VAPORIZATION TEMPERATURES CLOSE TO THE PLASTIC RANGE THEREOF, HEATING THE ADMIXED MASS TO A TEMPERATURE ABOVE 100* C. AND ABOVE THE SOFTENING POINTS OF THE BINDER INGREDIENTS BUT BELOW THEIR VAPORIZATION TEMPERATURES, EXTRUDING THE THUS HEATED MASS UNDER LOW PRESSURES TO FORM AN ARTICLE OF DESIRED SHAPE, AND SINTERING THE ARTICLE IN A NONOXIDIZING ATMOSPHERE AT TEMPERATURE ABOVE THE VAPORIZATION TEMPERATURE OF THE BINDER BUT BELOW THE MELTING POINT OF THE METAL TO COMPLETELY ELIMINATE THE BINDER WITHOUT ACTION OF NASCENT CARBON ON THE METAL.