Brazing sheet for flux-free brazing, method for flux-free brazing and method for producing heat exchanger
AssigneeMitsubishi Aluminum Co., Ltd.
InventorHideyuki MIYAKE
Life of this patent
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Abstract
Brazing sheet for flux-free brazing, wherein an outermost surface brazing filler metal layer, consisting of an Al—Si-based alloy containing 4 to 12% Si in mass %, and an intermediate brazing filler metal layer, consisting of an Al—Si—Mg-based alloy containing 1% or more and less than 4% Si and 0.1 to 5.0% Mg in mass %, are cladded on one side or both sides of a core material, and wherein aluminum members are joined to each other without using flux in a non-oxidizing gas atmosphere under normal pressure with an oxygen concentration of 300 ppm or less, using the brazing sheets.
Claims9
A brazing sheet for flux-free brazing, wherein an outermost surface brazing filler metal layer, consisting of an Al—Si-based alloy comprising 4 to 12% Si in mass %, and an intermediate brazing filler metal layer, consisting of an Al—Si—Mg-based alloy comprising 1% or more and less than 4% Si and 0.1 to 5.0% Mg in mass %, are cladded on one side or both sides of a core material.
Dependencies are inferred from the claim text.