PROCESS FOR IMPROVING PLATABILITY OF ALLOYED, HOT-DIP GALVANIZED STEEL PLATE

PROBLEM TO BE SOLVED: To provide a process for improving a platability which can reduce uneven plating by improving the platability in the width direction of an alloyed, hot-dip galvanized steel plate especially using a high-Si or high-P steel. SOLUTION: In the process for improving the platability...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	SUZUMURA NOBUHIRO, AIBA MASAJI
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TREATMENT OF ALLOYS OR NON-FERROUS METALS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a process for improving a platability which can reduce uneven plating by improving the platability in the width direction of an alloyed, hot-dip galvanized steel plate especially using a high-Si or high-P steel. SOLUTION: In the process for improving the platability of the alloyed, hot-dip galvanized steel plate, a steel plate containing ≥0.15 mass% Si or ≥0.035 mass% P is cold-rolled, annealed, and after its surface is subjected to hot-dip galvanizing, subjected to alloying. Here, the cold-rolled, annealed steel plate is cooled from 650-850°C to 400-500°C at a cooling rate of 15-125°C/sec (preferably 70-125°C/sec), subsequently maintained at a uniform temperature of 400-500°C for 80-200 sec, and after its surface is subjected to hot-dip galvanizing, heated to 470-550°C. COPYRIGHT: (C)2004,JPO