FIELD: lubricating coatings. SUBSTANCE: proposed coating contains (mass ): sodium nitrate 77-84, talk 2-4, sodium polyphosphate 6-8, calcium hydroxide 3-4, sodium tetraborate 3-4, sodium salts of higher fatty acids 2-3. EFFECT: increases productivity of the process, increases strength of instrument. 2 tbl
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Authors
Dates
1995-12-10—Published
1985-10-22—Filed