Process for producing chromium-containing steel sheet hot-dip pl

Details Process for producing chromium-containing steel sheet hot-dip pl Process for producing chromium-containing steel sheet hot-dip pl

1990-06-15

1991-05-28

Roy, Upendra

Metal treatment

Compositions

Heat treating

148 15, 204 385, 427320, 428653, C25D 500, B32B 1518

Patent

active

050191861

ABSTRACT:
A method of producing a chromium-containing steel sheet hot-dip plated with aluminum. A steel sheet containing not less than about 3 wt % of chromium is pre-plated at each side thereof with an iron-phosphor alloy so that a pre-plating layer of the iron-phosphor alloy about 0.05 to 3.0 .mu.m thick is formed on each side of the steel sheet. The steel sheet is heated and then subjected to an aluminum hot-dip plating by being dipped in a bath of molten aluminum or a molten aluminum alloy. An undercoat nickel plating layer may be formed on the steel sheet in advance of pre-plating with the iron-phosphor alloy.

REFERENCES:
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patent: 4675214 (1987-06-01), Kilbane et al.
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patent: 4800135 (1989-01-01), Kilbane et al.
patent: 4883723 (1989-11-01), Kilbane et al.
patent: 4891274 (1990-01-01), Higuchi et al.
patent: 4913785 (1990-04-01), Uchida et al.
patent: 4940638 (1990-07-01), Adaniya et al.

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