Abstract: A pre-flux coating for the manufacturing of heat exchanger components of aluminum, wherein the coating comprises a combination of fluxes in the form of potassium aluminum fluoride K1-3AlF4-6, potassium trifluoro zincate, KZnF3, lithium aluminum fluoride Li3AlF6, a filler material in the form of metallic Si particles, Al—Si particles and/or potassium fluoro silicate K2SiF6, an additive in the form of aluminum oxide and at least one other oxide selected from the group consisting of zinc oxide, titanium oxide and cerium oxide forming a post braze ceramic layer, and a solvent and a binder containing at least 10% by weight of a synthetic resin which is based, as its main constituent, on a methacrylate homopolymer or a methacrylate copolymer.

Abstract: Pre-flux coating for the manufacturing of components by brazing, in particular manufacturing of heat exchangers of aluminium components including one or more fluxes and filler material. The coating is composed of one ore more fluxes in the form of potassium aluminum fluoride K1-3AIF4.6, potassium trifluoro zincate, KZnF3, lithium aluminum fluoride Li3AIF6, filler material in the form of metallic Si particles, Al—Si particles and/or potassium fluoro silicate K2S1F6, and additive in the form of alumminium oxide and/or other suitable oxide or material forming a post braze ceramic layer, and further including solvent and binder containing at least 10% by weight of a synthetic resin which is based, as its main constituent, on methacrylate homopolymer or methacrylate copolymer.

Abstract: Method for manufacturing tube fm heat exchangers, (TFP), by brazing metal components of mainly aluminium or aluminium alloys including the following steps:—making the components of the TFP heat exchanger including the tubes (2) and plate fins (6) with collars (7),—providing a pre-braze coating with filler material on the tubes (2), or providing a (welded) clad tube (2) with a flux coating,—assembling the components including attaching the fins (6) to the tubes (2),—heating the assembled components forming the brazed connection between the tubes (2) and fins (6).

Abstract: Pre-flux coating for the manufacturing of components by brazing, in particular manufacturing of heat exchangers of aluminium components including one or more fluxes and filler materials. The coating is composed of fluxes in the form of potassium aluminum fluoride K1-3AIF4-6, potassium trifluoro zincate, KZnF3, lithium aluminum fluoride Li3AIF6, filler material in the form of metallic Si particles, Al—Si particles and/or potassium fluoro silicate K2SiF6, and solvent and binder containing at least 10% by weight of a synthetic resin which is based, as its main constituent, on methacrylate homopolymer or methacrylate copolymer. The potassium aluminium fluoride, K1-3AIF4-6 is a flux including KAIF4, K2AIF5, K3AIF6 or a combination of these fluxes.