Verfahren zum Verhindern von Lücken in Zylindrischen Samen um einen Inneren Keramikkern Herum

Details

Veröffentlichungs-Nr.

EP3549694

Aktenzeichen

EP19167674

Anmeldetag

5. April 2019

Veröffentlichung

26. Januar 2022

Erteilung

26. Januar 2022

Rechtsraum

EP

IPC

B22C9/02B22C9/10B22D27/04C30B11/00C30B11/14C30B29/52C30B29/66

Abstract

A process for casting a single crystal axisymmetric thick walled tube comprising forming a axisymmetric single crystal ring seed (86) around a circular internal core (84), wherein the ring seed (86) has an inner diameter (94) and a taper (96) on the inner diameter (94), and the internal core (84) has an outer diameter (100) and a matching taper (96) on the outer diameter (94), the matching taper (96) matching the taper (96) of the inner diameter (94) of the ring seed (86), and the internal core (84) being free to translate in a vertical direction relative to the ring seed (86); and heating the ring seed (86) so as to expand the ring seed (86) relative to the internal core (84), and allowing the circular internal core (84) to translate relative to the ring seed (86) in a direction of the force of gravity, thereby maintaining contact between the circular internal core (84) and the ring seed (86).

Anmelder

Firmen

Raytheon Technologies Corporation
United Technologies Corporation

Land

🇺🇸 USA

Fachgebiete