METHOD FOR PRODUCING COMBINED RECUPERATORS

摘要

To join an aluminum containing first part to a second part, the second part is coated with a soldering alloy melting at a temperature lower than 320 DEG C, the first part and the second part are assembled and the assembly is subjected to an organic flux containing a metal fluoborate reducible by aluminum at a temperature lower than 320 DEG C. The fluxed assembly is then heated to melting point of the soldering alloy.