SCROLL MEMBER AND HEAT TREATMENT THEREOF

PURPOSE:To remarkably improve the workability of a scroll member made of an iron alloy by softening entirely or locally the spiral and flat parts by annealing, decarburization or other method. CONSTITUTION:A scroll member 1 made of an iron alloy is attached to a chuck 6 on a turntable 5. A preheatin...

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Bibliographische Detailangaben
Hauptverfasser:	MASUDA TOMIO, AIBA KAZUMI, IKEDA MITSUO, MINAGAWA SADATOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMISTRY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS HEATING INDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THANNON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS,TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTIONPRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 LIGHTING MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To remarkably improve the workability of a scroll member made of an iron alloy by softening entirely or locally the spiral and flat parts by annealing, decarburization or other method. CONSTITUTION:A scroll member 1 made of an iron alloy is attached to a chuck 6 on a turntable 5. A preheating coil 7 is moved forward with a driving device 8 and while being rotated with the turntable 5, the member 1 is preheated with an induced current from a power source 9. When the whole member 1 reaches the preheating temp., a driving device 11 and the turntable 5 are moved in synchronism with each other, and while a heating coil 10 is being moved along the spiral part, a high frequency induced current is supplied from a power source 12 to heat the surfaces 2 of the lapped side walls and the surface 3 of the flat plate.