Injection apparatus for a hot-chamber die-cast machine

An injection apparatus for a hot-chamber die-cast machine including a cylindrical sleeve; a plunger body slidingly movably disposed in the sleeve and having a circumferential groove on an outer cylindrical surface and passages extending from a pressurizing face to the groove. Divided seal rings fit...

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Bibliographic Details
Main Authors SAITO; MASAO, SAITO; AKINAMI, KAWAI; TOSHIYUKI, YAMANASHI; TORU, ISHIKAWA; SADANORI, ISOGAI; HISAO, KONNO; MASAHIKO, OKADA; KEIICHI, MIKI; ISAO
Format Patent
LanguageEnglish
Published 27.09.1994
Edition5
Subjects
CASTING
CASTING OF METALS
CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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Summary:An injection apparatus for a hot-chamber die-cast machine including a cylindrical sleeve; a plunger body slidingly movably disposed in the sleeve and having a circumferential groove on an outer cylindrical surface and passages extending from a pressurizing face to the groove. Divided seal rings fit loosely in the groove of the plunger body in such a manner that the divided rings are urged radially outwardly by the pressure of the molten metal in the sleeve through the passages when the plunger body is moved. The divided rings satisfy the following conditions: t3</=4.5x102 (mm)xD2xP/E where t: thickness (mm) of the divided rings, E: Young's modulus (Pa) of the divided rings, D: inner diameter (mm) of the sleeve, and P: pressure (Pa) which should be exerted onto the molten metal when injected.
Bibliography:Application Number: US19930095094