| abstract |
The present application relates to a A resin-coated aluminum alloy flat multi-cavity tube for a heat exchanger, comprising an aluminum alloy flat multi-cavity tube in which at least one flat surface thereof is adjusted to have a surface roughness of a center line average roughness (Ra) of 0.4 µm or more, and a ten-point height of irregularities (Rz) of 3 µm or more, wherein said roughened surface is coated and cured with a resin coating containing a metal powder for brazing that contains the metal powder containing a brazing flux, an acrylic resin, and a cross-linking agent and that has a metal powder volume content in solid content of 50% to 90%. A method of manufacturing such flat tube is also defined. |