Method for producing sintered ferrous article

Claim 2

IN THE METHOD OF PRODUCING A FERROUS METAL ARTICLE

Claim 3

IN THE METHOD OF PRODUCING A FERROUW METAL ARTICLE BY COMPACTING DISCRETE PARTICLES OF FERROUS METAL, CONSISTING ESSENTIALLY OF A MINIMUM OF 95% FE, INTO A COHESIVE SHAPE THEN SINTERING SAME AT AT LEAST 1950*F., THE HESIVE SHAPE THEN SINTERING SAME AT AT LEAST 1950*F. THE STEP OF INTRODUCING ELEMENTAL SULPHUR IN INTIMATELY ADMIXED RELATIONSHIP WITH SAID PARTICLES OF FERROUS METAL PRIOR TO COMPACTION AND SINTERING, SAID ELEMENTAL SULPHUR CAPABLE OF REACTING EXOTHERMALLY WITH AT LEAST PART OF SAID PARTICLES OF FERROUS METAL DURING SAID SINTERING, FOLLOWING COMPACTION THEREOF, TO PROVIDE AN AUXILIARY SOURCE OF HEAT DURING SINTERING FOR INCIPENTLY FUSING SAID POWOF HEAT DURING SINTERING FOR INCIPIENTLY FUSING SAID POWDERED IRON PARTICLES TOGETHER TO PROVIDE A COHERENT IRON ARTICLE HAVING SUPERIOR STRENGTH.

Claim 4

IN THE METHOD OF PRODUCING A FERROUW METAL ARTICLE BY COMPACTING DISCRETE PARTICLES OF FERROUS METAL, CONSISTING ESSENTIALLY OF A MINIMUM OF 95% FE, INTO A COHESIVE SHAPE THEN SINTERING SAME AT AT LEAST 1950*F., THE HESIVE SHAPE THEN SINTERING SAME AT AT LEAST 1950*F. THE STEP OF INTRODUCING ELEMENTAL SULPHUR IN INTIMATELY ADMIXED RELATIONSHIP WITH SAID PARTICLES OF FERROUS METAL PRIOR TO COMPACTION AND SINTERING, SAID ELEMENTAL SULPHUR CAPABLE OF REACTING EXOTHERMALLY WITH AT LEAST PART OF SAID PARTICLES OF FERROUS METAL DURING SAID SINTERING, FOLLOWING COMPACTION THEREOF, TO PROVIDE AN AUXILIARY SOURCE OF HEAT DURING SINTERING FOR INCIPENTLY FUSING SAID POWOF HEAT DURING SINTERING FOR INCIPIENTLY FUSING SAID POWDERED IRON PARTICLES TOGETHER TO PROVIDE A COHERENT IRON ARTICLE HAVING SUPERIOR STRENGTH.

Claim 5

AS AN ARTICLE OF MANUFACTURE, A FERROUS METALLIC ARTICLE WHICH IS THE PRODUCT OF A COMPACTED AND SINTERED MIXTURE COMPRISING PARTICULATE, FERROUS METAL CONSISTING ESSENTIALLY OF A MINIMUM OF 95* FE, AND PARTICULATE ELEESSENTIALLY OF A MINIMUM OF 95% FE, AND PARTICULATE ELEMENTAL SULPHUR, SAID ARTICLE CHARACTERIZED BY BONDS OF INTERPARTICULATE LINKS OF INCIPIENT FUSION BETWEEN, AND JOINING, SAID FERROUS PARTICLES, WHICH BONDS ARE THE COMJOINING SAID FERROUS PARTICLES, WHICH BONDS ARE THE COMBINED EFFECT OF SINTERING AND AN EXOTHERMIC REACTION BETWEEN SAID ELEMENTAL SULPHUR AND SID FERROUS METAL, SAID TWEEN SAID ELEMENTAL SULPHUR AND SAID FERROUS METAL, SAID EXOTHERMIC REACTION OCCURRING DURING SAID SINTERING, AND SAID ARTICLE CONSISTS ESSSENTIALLY OF AT LEAST 94% SAID FERSAID ARTICLE CONSISTS ESSENTIALLY OF AT LEAST 94% SAID FERROUS METAL.

Claim 6

AS AN ARTICLE OF MANUFACTURE, A FERROUS METALLIC ARTICLE WHICH IS THE PRODUCT OF A COMPACTED AND SINTERED MIXTURE COMPRISING PARTICULATE, FERROUS METAL CONSISTING ESSENTIALLY OF A MINIMUM OF 95* FE, AND PARTICULATE ELEESSENTIALLY OF A MINIMUM OF 95% FE, AND PARTICULATE ELEMENTAL SULPHUR, SAID ARTICLE CHARACTERIZED BY BONDS OF INTERPARTICULATE LINKS OF INCIPIENT FUSION BETWEEN, AND JOINING, SAID FERROUS PARTICLES, WHICH BONDS ARE THE COMJOINING SAID FERROUS PARTICLES, WHICH BONDS ARE THE COMBINED EFFECT OF SINTERING AND AN EXOTHERMIC REACTION BETWEEN SAID ELEMENTAL SULPHUR AND SID FERROUS METAL, SAID TWEEN SAID ELEMENTAL SULPHUR AND SAID FERROUS METAL, SAID EXOTHERMIC REACTION OCCURRING DURING SAID SINTERING, AND SAID ARTICLE CONSISTS ESSSENTIALLY OF AT LEAST 94% SAID FERSAID ARTICLE CONSISTS ESSENTIALLY OF AT LEAST 94% SAID FERROUS METAL.