METHOD FOR PRODUCING TiAl ALLOY INGOT, AND TiAl ALLOY INGOT PRODUCED BY THE METHOD

• Main Author: NAKAJIMA KAZUYUKI
• Format: Patent
• Language: English
• Published: 24.02.2011
• Subjects: ALLOYS; BLASTING; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; FERROUS OR NON-FERROUS ALLOYS; FOUNDRY MOULDING; FURNACES; FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; KILNS; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; OPEN SINTERING OR LIKE APPARATUS; OVENS; PERFORMING OPERATIONS; POWDER METALLURGY; RETORTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WEAPONS

PROBLEM TO BE SOLVED: To provide a method for producing a TiAl alloy ingot which can produce a sound, large-sized TiAl ingot by reducing process time and equipment driving cost required for melting so as to inexpensively suppress production cost, and further reducing the amount of oxygen mixed into a TiAl alloy. SOLUTION: In a ceramic crucible 1 using yttria as material, a molten metal obtained by melting Ti and Al as melting raw material by high frequency induction melting is cast into a mold, thus a TiAl ingot having a diameter of ≥200 mm is produced. COPYRIGHT: (C)2011,JPO&INPIT