EW 420 EXTRA THICK MARINE STEEL SHEET AND MANUFACTURING METHOD THEREFOR

An EW 420 extra thick marine steel sheet, which relates to the technical field of steel production. Internal defects such as blank segregation and loosening are reduced and the inclusion elements As, Sn, Sb, Pb, Bi and B are controlled by smelting clean steel; columnar crystals are crushed and auste...

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG, XiaoXue, LI, HengKun, BO, FeiHu, ZHAO, JinBin, CHE, MaJun, CEHN, LinHeng, HUANG, JianHua, QIU, BaoWen
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	An EW 420 extra thick marine steel sheet, which relates to the technical field of steel production. Internal defects such as blank segregation and loosening are reduced and the inclusion elements As, Sn, Sb, Pb, Bi and B are controlled by smelting clean steel; columnar crystals are crushed and austenite grains are refined by means of rough rolling at high temperature, at a low speed and under high pressure; and the objective of controlling tissue morphology and grain size is obtained by means of finish rolling cumulative deformation and cooperative cooling control.