Preparation of steel surfaces for single-dip aluminium-rich...

Details Preparation of steel surfaces for single-dip aluminium-rich... Preparation of steel surfaces for single-dip aluminium-rich...

2007-01-09

2007-01-09

Bashore, Alain L. (Department: 1762)

Coating processes

Immersion or partial immersion

Molten metal or fused salt bath

C427S310000, C427S329000, C427S406000

Reexamination Certificate

active

10501107

ABSTRACT:
A process is disclosed for the preparation of a steel surface for single-dip aluminium-rich zinc galvanizing. The process steps comprise: cleaning the surface so as to obtain less than 0.6 μg/cm2residual dirt; pickling the surface; applying a protective layer to the surface by immersion in a flux solution comprising bismuth. This invention also relates to a continuous steel product coated with a layer of metallic bismuth.

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Claessens, S. et al., “Influence of surface composition and morphology on the galvanizing behaviour of hot-rolled steel”, Galvatech '2001, International Conference on Zinc and Zinc Alloy Coated Steel Sheet, Jun. 26-28, 2001, pp. 631-638, Publisher: Verlag Stahleisen GmbH, Dusseldorf, Germany.

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