STRUCTURE OF PACKING MATERIAL FOR TAP HOLE

PROBLEM TO BE SOLVED: To provide the structure of a packing material increased in the oxygen-free porosity at the time of tapping by prevent molten metal penetration and oversintering. SOLUTION: This structure of the packing material for a tap hole is formed of the packing material which has a two-l...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	YASHIMA YUKIO, YAMAUCHI TAKASHI, KUMEI TAKASHI
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS POWDER METALLURGY REFRACTORIES SLAG TRANSPORTING TREATMENT OF NATURAL STONE
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide the structure of a packing material increased in the oxygen-free porosity at the time of tapping by prevent molten metal penetration and oversintering. SOLUTION: This structure of the packing material for a tap hole is formed of the packing material which has a two-layered structure composed of a porous on bellow lower layer consisting of particles contg. >=70wt.% Al2 O3 and having 1.0 to 2.0mm grain size and an upper layer consisting of feldspar particles having 0.5 to 2.0mm grain size or a mixture composed of feldspar particles having 0.5 to 2.0mm grain size and silica particles having 0.5 to 2.0mm grain size and is charged into the tap hole of a vessel for molten metal.