FIELD: ferrous metallurgy. SUBSTANCE: coating contains (in wt %): diatomite, 20-40; bentonite, 0.5-3.0; silicic acid sol colloid solution, 3-8; carbon-containing additive, 0.1-1.5; trisodium phosphate, 0.1-1.0; and water, the balance. As carbon-containing additive carbon black, black graphite or coal dust with specific surface area at least 3 sq.m/g can be used. EFFECT: optimized coating make-up. 2 cl, 1 tbl
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Authors
Dates
1997-09-10—Published
1995-09-14—Filed