METHOD FOR SURFACE BRAZING BETWEEN ALUMINUM ALLOY MEMBER AND COPPER ALLOY MEMBER

PROBLEM TO BE SOLVED: To provide a method for flux free surface brazing between an aluminum alloy member and a copper alloy member using a single-layer brazing sheet.SOLUTION: A single-layer brazing sheet comprising a brazing material having a component composition containing 1.0 to 12 mass% Si and...

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Hauptverfasser: TOGASHI RYOSUKE, HORI HISASHI, KOKUBO TAKAKUNI
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a method for flux free surface brazing between an aluminum alloy member and a copper alloy member using a single-layer brazing sheet.SOLUTION: A single-layer brazing sheet comprising a brazing material having a component composition containing 1.0 to 12 mass% Si and 0.1 to 5.0 mass% Mg with the remainder being made up by Al and unavoidable impurities and having a thickness of 15 to 200 μm is sandwiched between an aluminum alloy member and a copper alloy member so as to be in surface contact, the aluminum alloy member and the copper alloy member are brazed flux-free in an inert gas atmosphere while a surface pressure of no less than 0.6 MPa is applied and the brazing temperature is held at 510 to 550°C.