Verfahren zur Herstellung einer Ti-Al-Legierung

Details

Veröffentlichungs-Nr.

EP3586998

Aktenzeichen

EP18756604

Anmeldetag

23. Februar 2018

Veröffentlichung

11. August 2021

Erteilung

11. August 2021

Rechtsraum

EP

IPC

B22D7/00B22D11/00B22D11/108C22B9/20C22C14/00

Abstract

<div notation="docdba" type="abstract" xml:base="/api/emi/section/50ca8d5f-9b3e-4a5b-831d-3b70643e5af8/image" xml:lang="en"><p>The present invention is provided with: a primary ingot production step in which 3-20 mass% of a CaO-CaF2 flux obtained by mixing 35-95 mass% of calcium fluoride with calcium oxide, is added to a Ti-Al alloy material including a total of at least 0.1 mass% of oxygen, and at least 40 mass% of Al, and the resultant substance is melted by way of a melting method using a water-cooled copper container in an atmosphere having a pressure of 1.33 Pa or higher, and held, to produce a primary ingot; a secondary ingot production step in which the primary ingot is continuously drawn downwards while being melted by way of a melting method using a bottomless water-cooled copper casting mould in an atmosphere having a pressure of 1.33 Pa or higher, to obtain a secondary ingot Y; and a flux layer removal step in which a flux layer deposited on the surface of the secondary ingot Y is mechanically removed.</p></div>

Anmelder

Firma

Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

Land

🇯🇵 Japan

Fachgebiete