FIELD: soldering.
SUBSTANCE: invention can be used at soldering of parts manufactured of aluminum and its alloys. Coating is formed by application and heating of hexafluosilicate of alkaline metal. Use is made of pure hexafluosilicate of alkaline metal or mixture of hexafluosilicated of alkaline metal with fluoroaluminate in amount of maximum 5 mass % in terms of used hexafluosilicate of alkaline metal. Coating is applied to article by dry or wet flux application method nonobligatorily with binder or film former. Corrosion-resistant layer of potassium fluoroaluminate formed simultaneously provides effective protection of alloy from subsequent oxidation.
EFFECT: improved quality of soldered joints.
12 cl, 3 ex
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