MANUFACTURE OF PARTS FOR ALUMINUM ALLOY-MADE ROTARY GEAR PUMP

PURPOSE:To obtain parts for aluminum alloy rotary gear pump with good accuracy and yield at a low cost by directly packing heated aluminum alloy powder in a metallic mold and hot-forging. CONSTITUTION:The fixed quantity of powder is charged into an aluminum can and heated in a heating furnace adjust...

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Bibliographische Detailangaben
1. Verfasser:	AKECHI KIYOAKI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CASTING HEATING LIGHTING MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER MECHANICAL ENGINEERING PERFORMING OPERATIONS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS POWDER METALLURGY PRESSES PRESSES IN GENERAL PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS TRANSPORTING WEAPONS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain parts for aluminum alloy rotary gear pump with good accuracy and yield at a low cost by directly packing heated aluminum alloy powder in a metallic mold and hot-forging. CONSTITUTION:The fixed quantity of powder is charged into an aluminum can and heated in a heating furnace adjusted with the atmosphere. This heated powder 5 is packed in the forging die 6 from the aluminum can. The die 6 is desirably coated with on kind or parting agent of graphite, MoS2, BN, etc., on the inner surface thereof. Further, a suitable heating temp. of the die 6 is within the range of 150-500 deg.C. As the pressure required for forging is >=4ton/ cm . By using an upper punch 7, a lower punch 8 and a core rod 9, the parts for the gear pump is hot-forged.