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Latest Inventions  Metallurgy ANTICORROSIVE COMPOSITION AND METHOD OF ITS APPLICATION TO METAL SURFACE
ANTICORROSIVE
COMPOSITION AND METHOD OF ITS APPLICATION TO METAL SURFACE
FIELD: metal corrosion, particularly, protection
of metals from atmospheric and biological corrosion; applicable in mechanical
and instrumentation engineering, and in other industries.
SUBSTANCE: anticorrosive composition includes, g/l:
orthophosphoric acid, 70-120; zinc oxide, 8-10; sodium hexametaphosphate,
0.01-0.05; calcium hypophosphite, 0.05-0.10; product of reaction of alkali metal
salts of benzoic and chromic acids, 0.8-1.0; detergent, 14.3-15.6; water, the
balance. Detergent contains, g/l: sodium metasilicate, 3.0-3.5; trisodium
phosphate, 5.0-5.5; sodium carbonate, 5.5-6.0; surfactant OP-7 or OP-10,
0.8-1.0. Composition is applied to article surface in its machining
simultaneously with its supply to zone of machining with time of contact with
machined surface of at least 30 s in machining zone and not more that 3 h after
completion of machining at ambient air and machined surface temperature of 10-30
C.
EFFECT: higher protective properties of coatings,
simplified and low-cost process. 2 cl, 3 tbl, 1 ex
Tanasienko S.Ju.,
Men'shikov A.V., Gavrilova N.P.
Patent number: 2174161
Publishing date: November 21, 2001
To make the order on reception of the complete information under the invention, interesting for you
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