MANUFACTURE OF H-BEAM WITH THIN WEB

PURPOSE:To manufacture an H-beam with a thin web having a superior shape without waving the web by subjecting the flange parts of H-beam with a thin web to water cooling and heat recuperation under specified conditions when the H-beam is manufactured by hot rolling. CONSTITUTION:When an H-beam with...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	AMANO KENICHI, KONDO NOBUYUKI, NAKANO SHOZABURO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PURPOSE:To manufacture an H-beam with a thin web having a superior shape without waving the web by subjecting the flange parts of H-beam with a thin web to water cooling and heat recuperation under specified conditions when the H-beam is manufactured by hot rolling. CONSTITUTION:When an H-beam with a thin web having >=2.2 ratio of the thickness of the flanges to that of the web and >=70 ratio of the height of the web to the thickness of the web is manufactured by hot rolling, water cooling and heat recuperation from the outsides of the flanges are repeated twice or more. In one of these stages, water cooling is suspended at the time when the temp. of the surface layers (water-cooled sides) of the flanges is reduced to the martensite start point (Ms point) or below and then heat recuperation to >=600 deg.C is carried out. The H-beam with a thin web having a superior shape can be manufactured with out waving the web.