Manufacturing method of hot-dip galvanized protective plate

The invention discloses a manufacturing method of a hot-dip galvanized protective plate. The manufacturing method comprises the following steps that a plurality of cooling cavities are prepared in advance, firstly, hot rolling is carried out on a steel billet, coiling is carried out at the temperatu...

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Bibliographische Detailangaben
Hauptverfasser:	CHEN YOUPING, DUAN YICHUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL 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 INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention discloses a manufacturing method of a hot-dip galvanized protective plate. The manufacturing method comprises the following steps that a plurality of cooling cavities are prepared in advance, firstly, hot rolling is carried out on a steel billet, coiling is carried out at the temperature of 450-650 DEG C after cooling, the steel is put into a strong acid pool for acid pickling aftercoiling is finished, heating to 650 DEG C or above is carried out after acid pickling, and keeping is carried out for 15-600 seconds in a temperature range of 730-880 DEG C, and then cooling to 600 DEG C or below is carried out. According to the manufacturing method, the plate can cooled step by step in the conveying process, shock cooling of the plate is avoided, meanwhile, the production efficiency is guaranteed, the practicability is higher, and the problems that in production process of hot-dip galvanized protective plate at present, low-temperature cooling mode is adopted, so that shock cooling of the plate is li