Hollow casting and manufacturing method therefor, and method and apparatus for smoothing internal surface of hollow casting

There is provided a hollow casting in which a surface roughness Ra of a casting wall portion surface forming a hollow portion formed by a wall portion is 10 mum or less. Such a hollow casting can be obtained by a manufacturing method for the hollow casting in which after molten metal is poured into...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	AKAHORI HIROMI, SUZUKI MATUO, KAWASHIMA SHIRO
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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