HEISSTAUCHBESCHICHTETES ALUMINISIERTES BLECH, VERFAHREN ZU DESSEN HERSTELLUNG UND LEGIERUNGSSCHICHTKONTROLLVORRICHTUNG

摘要

In order to provide a hot-dip aluminized steel sheet with increased peeling resistance of the coating layer, the thickness of the Fe-Al-Si alloy-layer is set to be 1-5 mu m, while the maximum differential unevenness of thickness of the Fe-Al-Si alloy layer is set to be 0.5 - 5 mu m. The hot-dip aluminized steel sheet is manufactured by controlling an elapsed time from the beginning of immersion of the base-metal steel sheet into the aluminizing bath to the completion of solidification of the coating-metal layer which has passed through the bath and another elapsed time from the time after the base-metal steel sheet has been guided out over the bath to the completion of solidification of the coating-metal layer.