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EP0025481A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process for the production of castings by investment casting

Assignee: Schneider Hans
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Filing: 1980-07-05
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Granted: —
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Expires: 2000-07-05
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Abstract

Abstract Translated from German Als Material für die Herstellung von Kernen für Präzisionsgießformen wird ein Metall verwendet, das bei relativ tiefen Temperaturen, d.h. unterhalb der Erstarrungstemperatur der abzugießenden Schmelzen oxidierbar ist und durch Oxid-Sublimieren direkt vom festen Zustand in die Gasphase übergeht. Dadurch wird das Herauslösen von Kernen, besonders von solchen geringen Durchmessers, aus den Gußstücken erheblich beschleunigt. A metal is used as the material for the production of cores for precision casting molds, which at relatively low temperatures, i.e. is oxidizable below the solidification temperature of the melts to be poured off and passes directly from the solid state into the gas phase by oxide sublimation. This significantly speeds up the removal of cores, especially those of small diameter, from the castings.

Inventors

  • 👤 Hans Schneider

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-06 13:25
CPC Classifications
B; B22; B22C; B22C7/00; B22C7/02

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US3259492A Cited
FR2143777A1 Cited
US4043381A Cited

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