Open AccessGas brazing of thin-sheet galvanized steel with aluminum solders
Author(s) -
V.N. Polishchuk,
Nataliya Strelenko,
Vladyslav Kovalenko
Publication year - 2021
Publication title -
mechanics and advanced technologies
Language(s) - English
Resource type - Journals
eISSN - 2522-4255
pISSN - 2521-1943
DOI - 10.20535/2521-1943.2021.5.2.245009
Subject(s) - galvanization , brazing , materials science , metallurgy , soldering , aluminium , coating , wetting , layer (electronics) , zinc , base metal , flux (metallurgy) , galvannealed , composite material , welding , alloy
. In this work, the first stage of experimental research was carried out to estimate the main physicochemical processes that determine the qualitative characteristics of a brazed joint made of thin sheet galvanized steel during gas brazing with aluminum solder systems. In particular, an estimation was made of the ability of spreading and wetting of aluminum solders (AlSi5, AlSi12) on the surface of thin sheet galvanized steel ( DX56D + Z of 0.4 mm thick and zinc-coated layer of 45–65 microns) at a step-by-step increase in the heating area of the base metal in the presence and absence of flux (Al-Flux 726). The aluminum alloys was heated “not directly,” but through the base metal to maximize the preservation of the anticorrosive zinc coating at the interface between the liquid solder and the base material.