Method for producing a color-coated article

Details Method for producing a color-coated article Method for producing a color-coated article

1993-01-14

1994-11-15

Niebling, John

Metal treatment

Process of modifying or maintaining internal physical...

Producing or treating layered, bonded, welded, or...

427343, 4273837, 427433, C23C 206, C23C 228

Patent

active

053644786

ABSTRACT:
A method for producing a brown coated article, wherein an iron substrate is dipped at a temperature of from 430.degree. to 600.degree. C. in a molten Zn plating bath containing from 0.05 to 1% by weight of Mn, so as to zinc hot-dip galvanize the same, a heat treatment is carried out to convert the Zn-Mn phase formed by the zinc hot-dip galvanizing to a Zn-Mn-Fe phase, and subsequently the zinc hot-dip galvanizing layer is brought into contact with an acidic aqueous solution containing an oxidizing agent.

REFERENCES:
patent: 3630792 (1971-12-01), Smyth
patent: 4059711 (1977-11-01), Mino et al.
patent: 4659631 (1987-04-01), Kurimoto et al.
patent: 5141782 (1992-08-01), Tomita et al.

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