BRAZING METHOD, AQUEOUS SUSPENSION OF FLUX, FLUX FOR BRAZING, PROCESS FOR MAKING FLUX AND METHOD FOR USING IRREVERSIBLY DEHYDRATED KAlF Russian patent published in 2000 - IPC

FIELD: brazing light metals such as aluminium. SUBSTANCE: flux includes irreversibly dehydrated potassium pentafluoroaluminate (K₂AlF₅). Invention also offers respective brazing method with use of said flux and process for making such flux. Process for making flux comprises steps of high temperature treatment for realizing conversion of reversibly dehydrated flux K₂AlF₅•H₂O and/or K₂AlF₅ to irreversibly dehydrated flux K₂AlF₅. Use of irreversibly dehydrated at making fluxes for brazing is also offered. EFFECT: possibility of making highly uniform coating of flux on products subjected to brazing, and super-high fluidity of flux. 14 cl, 5 ex