Metal treatment – Compositions – Heat treating
Patent
1985-01-07
1987-05-26
Silverberg, Sam
Metal treatment
Compositions
Heat treating
C23C 2233
Patent
active
046683054
ABSTRACT:
The life of chromium phosphate coating baths is extended by at least fully restoring depleted Cr.sup.VI ; bath efficiencies are significantly improved.
REFERENCES:
patent: 2438877 (1948-03-01), Spruance
patent: 2472864 (1949-05-01), Spruance
patent: 2678291 (1954-05-01), Spruance
patent: 3481797 (1967-12-01), Leland
Dollman David Y.
McMillen Mark W.
Amchem Products Inc.
Millson Jr. Henry E.
Silverberg Sam
Szoke Ernest G.
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