Surface treatment of metal strip

Details Surface treatment of metal strip Surface treatment of metal strip

1979-03-13

1980-11-04

Kendall, Ralph S.

Metal treatment

Compositions

Heat treating

148 615Z, 148143, C23F 710, C21D 160

Patent

active

042318122

ABSTRACT:
Metal strip, particularly steel strip, is heated to above 250.degree. C. and quenched in a phosphating bath, at 80.degree. C. or more, containing one or more phosphates of the type Me (H.sub.2 PO.sub.4).sub.n, where Me=Zn, Ni, Mn, or an alkali metal, at a concentration of 1 to 20 g/l.

REFERENCES:
patent: 1761186 (1930-06-01), Baker et al.
patent: 2800422 (1957-07-01), Piccinelli
patent: 2813813 (1957-11-01), Ley et al.
patent: 2857301 (1958-10-01), Mauzy et al.
patent: 2984592 (1961-05-01), Logan
patent: 3520738 (1970-07-01), Matsubara et al.
patent: 3573997 (1971-04-01), Plaxton

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