Means for applying zinc stearate coatings to the bore surfaces o

Details Means for applying zinc stearate coatings to the bore surfaces o Means for applying zinc stearate coatings to the bore surfaces o

1975-10-10

1977-07-19

McIntosh, John P.

Coating apparatus

With means to prepare work surface for coating

Liquid treatment

118408, B05C 704

Patent

active

040361705

ABSTRACT:
In order to form an adherent coating of zinc stearate on the bore surfaces of a plurality of tubes grouped in parallel relation, an alkali cleaner solution is circulated therethrough from a reservoir tank and then returned to the tank by a flow of purge air which is thereafter vented to the atmosphere to remove any alkali residue from the system. A phosphate solution, an alkali neutralizer solution, and a stearate solution are, in turn, similarly circulated and returned to their respective reservoir tanks. Each circulation is followed by a corresponding circulation of hot rinse water which is also returned to its reservoir tank by the same air purge technique.

REFERENCES:
patent: 1194542 (1916-08-01), Raymond
patent: 2483709 (1949-10-01), Paulsen
patent: 3458133 (1969-07-01), Wiggins
patent: 3667487 (1972-06-01), Schoenbeck et al.

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