BRIGHT ANNEALING METHOD FOR METAL MATERIAL

PURPOSE:To execute bright annealing without any fear of explosion by controlling adding quantity of H2 gas in the atmosphere in accordance with invasion of oxygen in the air into an annealing furnace at the time of executing the bright annealing to metal material. CONSTITUTION:At the time of executi...

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Hauptverfasser:	YOSHIDA HIROTAKA, SHIGEMI AKITOSHI, OHATA RYUICHI, KAMIYA TAKASHI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
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Beschreibung
Zusammenfassung:	PURPOSE:To execute bright annealing without any fear of explosion by controlling adding quantity of H2 gas in the atmosphere in accordance with invasion of oxygen in the air into an annealing furnace at the time of executing the bright annealing to metal material. CONSTITUTION:At the time of executing the bright annealing to the metal material (Fe-Ni series alloy lead frame) into the annealing furnace, in case the invading quantity of the oxygen in the air into the annealing furnace is, for example