Method of producing hollow steel ingot and apparatus therefor

The casting apparatus for a hollow steel ingot is constructed such that: at least three concentric pipes are provided in the central portion of an ordinary mold for a steel ingot; a core is formed by filling up a space formed between the first outer-most pipe having the largest diameter and the seco...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ASO, KAZUO, MIYAI, NAOMICHI, NISHIOKA, TAKESABURO, YAMAMOTO, TAKEMI, MATSUNO, JUN-ICHI
Format:	Patent
Sprache:	eng
Schlagworte:	CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING
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