MANUFACTURE OF EXTREMELY THICK STEEL PLATE

PURPOSE:To provide a method for manufacturing an extremely thick steel plate excellent in internal quality from a continuously cast slab by utilizing a forging press used ordinarily and efficiently pressing down porosities which are present in the middle part of the continuously cast slab without re...

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Bibliographische Detailangaben
Hauptverfasser:	MISHIRO SUKETSUGU, ISHII HIROAKI, NOMURA TOMOFUMI, TANIGAWA OSAMU
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY FORGE FURNACES FORGING GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS HAMMERING MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PRESSING METAL PUNCHING METAL RIVETING ROLLING OF METAL TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To provide a method for manufacturing an extremely thick steel plate excellent in internal quality from a continuously cast slab by utilizing a forging press used ordinarily and efficiently pressing down porosities which are present in the middle part of the continuously cast slab without requiring new equipment investment. CONSTITUTION:At the time of manufacturing the thick steel plate at the total draft of =alpha1>=30-0.5Xalpha2. Where, alpha1: draft (%) in forging, alpha2: draft (%) in thick plate rolling.