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Information × Registration Number 0220U101085, 0118U002320 , R & D reports Title ІЕW-2018/1 popup.stage_title Head Maksymova Svitlana V., Доктор технічних наук Registration Date 31-01-2020 Organization E.O.Paton Elektric Welding Institute National Academy of scinces of Ukraine popup.description2  Object of research - compositions of reactive fluxes on the basis of the salt system K, Al, Si / F, processes of furnace reactive flux brazing of aluminum (AMz) thin-walled structures in the environment of the protective gas - argon. The aim of the work is to create materials (fluxes) and technology of brazing of aluminum thin-walled structures in a controlled gas environment in exchange of energy-intensive and environmentally hazardous brazing technology by immersion in salt melt of chloride-fluoride corrosion fluxes. The chemical interaction in the heterogeneous system "jet flux based on the salt system K, Al, Si / F - aluminum oxide - aluminum" was investigated. The perspective compositions of fluoride flux mixtures based on the K, Al, Si / F salt system and their melting temperature are determined. The possibility of brazing thin-walled aluminum (AMz) with low magnesium content (less than 0.7 wt.%) By reactive flux (without brazing filler metal) due to aluminum-thermal reduction of silicon from the composition of potassium hexafluorosilicates and formation of Al-Si alloy on the aluminum surface has been established. Performs the function of brazing filler metal. The optimum temperature-time parameters of jet-flux brazing of model specimens (V = 35… 46 ͦ C / min, Tp = 600… 610 ͦ C) at which the maximum draft of at least 95% is achieved and the structure are established solid solution with the inclusion of quasi-eutectics (Al-15.48… 17.5 Si). Non-hygroscopic fluoride flux was created on the basis of the researches and ecologically safe technological process of reactive flux brazing of aluminum thin-walled VA5.092.043SB waveguide constructions in a controlled gas environment was developed. Experimental and industrial tests of brazing product performance in the conditions of the Customer of PAT “Kyiv Plant“ RADAR ”have shown their compliance with the requirements of the TZ. According to the results of the researches, a technological instruction for jet-flux brazing Product Description popup.authors Voronov Vitaliy V. Sabadash Oleg M. Sukhoiarsky Vitaliy E. popup.nrat_date 2020-04-02 Close