FLUX AND PRODUCTION METHOD OF STEEL PRODUCT WITH HOT-DIP ZN-AL-MG COATING USING SAID FLUX

Provided is a technique that can produce a hot dip Zn-Al-Mg-based alloy coated steel product with a good plating appearance, without the need for heating of a steel product prior to immersion in a hot dip plating bath. Flux (11) for hot dip Zn-Al-Mg-based alloy plating contains: ZnCl2; and a low-rea...

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Hauptverfasser: ISHII, Koutarou, TSUJIMURA, Takao
Format: Patent
Sprache:eng
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Zusammenfassung:Provided is a technique that can produce a hot dip Zn-Al-Mg-based alloy coated steel product with a good plating appearance, without the need for heating of a steel product prior to immersion in a hot dip plating bath. Flux (11) for hot dip Zn-Al-Mg-based alloy plating contains: ZnCl2; and a low-reactive chloride which has low reactivity with respect to Mg in a plating bath and contains at least two chlorides selected from the compound group consisting of alkali metal chlorides and alkaline-earth metal chlorides, and a composition of the ZnCl2 and the low-reactive chloride is adjusted so that a liquidus temperature of the flux is 450° C. or lower.