Metal treatment – Compositions – Heat treating
Patent
1976-11-26
1978-07-18
Kendall, Ralph S.
Metal treatment
Compositions
Heat treating
148 614R, 148 62, 427282, 427287, 427300, 427329, 427433, C23C 102
Patent
active
041013450
ABSTRACT:
Mild steel strip is galvanized in selected areas only, typically on one side only of the strip, by pretreating the areas selected for absence of galvanizing to form thereon a readily chemically strippable coating of chemically hydrated compounds non-wetting in molten zinc. Preferably, the pretreatment is carried out using phosphoric acid solution to form thereon a thin coating of a composite of hydrated iron phosphates and iron hydroxides. After passing the thus-treated steel strip through the molten zinc bath and solidification of the zinc coating, the composite coating is removed by dilute mineral acid. Mild steel strip galvanized on one side using this procedure has particular utility in the automotive industry.
REFERENCES:
patent: 2137464 (1938-11-01), Swartz et al.
patent: 3104993 (1963-09-01), Sievert et al.
Baird-Kerr Richard G.
Hunter Robert F.
Koprich Stephen R.
Sakai Daniel S.
Kendall Ralph S.
The Steel Company of Canada Limited
LandOfFree
Galvanizing steel strip in selected areas thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Galvanizing steel strip in selected areas thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Galvanizing steel strip in selected areas thereof will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-337200