PLATE FIN MATERIAL FOR HEAT EXCHANGER AND METHOD OF MANUFACTURING THE PLATE FIN MATERIAL, AND THE HEAT EXCHANGER USING THE PLATE FIN MATERIAL AND METHOD OF MANUFACTURING THE HEAT EXCHANGER

PROBLEM TO BE SOLVED: To secure good brazing property and to secure high strength by preventing degradation in the strength after brazing, in a plate fin material for a heat exchanger.SOLUTION: In the plate fin material which has sheet thickness of 0.05-0.15 mm, in which joint portion is formed and...

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Bibliographische Detailangaben
Hauptverfasser:	IWAO SHOHEI, KURODA SHU
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BLASTING CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION FERROUS OR NON-FERROUS ALLOYS HEAT EXCHANGE IN GENERAL HEATING LIGHTING MACHINE TOOLS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To secure good brazing property and to secure high strength by preventing degradation in the strength after brazing, in a plate fin material for a heat exchanger.SOLUTION: In the plate fin material which has sheet thickness of 0.05-0.15 mm, in which joint portion is formed and heat transfer pipe is brazed to the joint portion, and which is composed of a single material or a clad material, the core material of the single material or clad material has a composition composed of, by mass%, >1.5 to 2.0% Mn and 0.15-0.50% Fe wherein Mn and Fe contents satisfy a condition of 3.5≤Mn/Fe≤10.0, and the balance Al with inevitable impurities. After brazing and heat treatment, a portion except for the joint portion has ≥50% subgrain structure in an area ratio in the cross-sectional structure and the joint portion has at ≤50% subgrain structure in an area ratio in the cross-sectional structure.