Flux composition used for hard-soldering parts made of aluminum or its alloys, especially motor vehicle radiators contains flux, solvent and binder

摘要

A flux composition (I) contains at least a flux, a solvent and a binder. Independent claims are also included for the following: (1) a method for the production of (I) by mixing half the solvent with the binder and a thixotropy modifier, adding the flux with stirring and then adding the rest of the solvent; (2) a method for the production of coated formed parts in which composition (I) is coated onto the part; (3) coated formed parts obtained by this method; (4) a hard-soldering method for the production of joined formed parts based on aluminum or its alloys in which parts coated with (I) by the above method are hard-soldered together; (5) a method for the production of formed parts coated with (I) by coating a blank with (I) and then forming the coated blank; (6) a hard-soldering method as above (for aluminum or its alloys) in which formed parts are made by the method described in (5) and then joined by hard-soldering; and (7) a hard solder coating containing (I).