Sludge reducing zinc phosphating process and composition

Details Sludge reducing zinc phosphating process and composition Sludge reducing zinc phosphating process and composition

1996-12-04

1999-05-04

Simmons, David A.

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

148253, 148261, 148262, 148273, 148275, 148279, 148283, C23C 2248

Patent

active

059000732

ABSTRACT:
Equations have been developed to predict the amount of sludge formed during, and the values of several other characteristics of, zinc phosphating processes. Using these equations, novel compositions that achieve low sludge without sacrificing other characteristics of good zinc phosphate coatings have been discovered.

REFERENCES:
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patent: 4793867 (1988-12-01), Charles et al.
patent: 4838957 (1989-06-01), Miyamoto
patent: 5200000 (1993-04-01), Yamamoto
patent: 5207840 (1993-05-01), Riesop
patent: 5232523 (1993-08-01), Endo
patent: 5308413 (1994-05-01), Sobata
patent: 5536336 (1996-07-01), Nakatsukasa

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