HEAT COLLECTING PLATE FOR SOLAR ENERGY-POWERED HOT WATER SUPPLYER AND ITS MANUFACTURE

PURPOSE:To raise the manufacturing yield of products by enabling good solar energy absorptive film to be formed by a method in which the surface of a steel plate is treated so that a metal element-enriched layer in a reduced state is formed and then subjected to a bright annealing, followed by rust-...

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Bibliographische Detailangaben
Hauptverfasser:	SONE YUUJI, ONO HIROSHI, KURAHASHI HAYAO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMISTRY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS HEATING LIGHTING MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS RANGES VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To raise the manufacturing yield of products by enabling good solar energy absorptive film to be formed by a method in which the surface of a steel plate is treated so that a metal element-enriched layer in a reduced state is formed and then subjected to a bright annealing, followed by rust-proofing treatment before a selective absorption film processing. CONSTITUTION:A metal element(in reduced state)-enriched layer is provided on the surface of a stainless steel plate in a thickness of 50Angstrom depth at most. In forming a selective absorption film for solar energy collection, the steel plate is subjected to a bright annealing process under conditions to meet the relationships, 800