Title:
チタン系インゴットの製造方法
Document Type and Number:
Japanese Patent JP7471946
Kind Code:
B2
Abstract:
To provide a titanium-based ingot manufacturing method which can suppress occurrence of internal pores on a surface of a titanium-based ingot even using a titanium sponge with a relatively high chlorine content as dissolved raw material.SOLUTION: A titanium-based ingot manufacturing method includes: a dissolution process in which a dissolved raw material Ms, which contains, as a titanium sponge, a high chlorine content titanium sponge with a chlorine content of 0.15% by mass or more and in which a ratio of an amount of the high chlorine content titanium sponge in the total amount of titanium sponge is 4% or more on mass basis, is dissolved to obtain a molten metal Mm; and a casting process in which the molten metal Mm is flown into a casting mold 3, and when a melting point of a material constituting the molten metal Mm is represented by Tm(°C), a liquid surface temperature Ts(°C) of the molten metal Mm in the casting mold 3 is so made in a peripheral edge region near an inner surface 3a of the casting mold as to be Ts≥Tm+105°C.SELECTED DRAWING: Figure 1
Inventors:
Keisuke Morotomi
Hirofumi Kojima
Hirofumi Kojima
Application Number:
JP2020129836A
Publication Date:
April 22, 2024
Filing Date:
July 31, 2020
Export Citation:
Assignee:
Toho Titanium Co., Ltd.
International Classes:
B22D11/041; B22D11/00; B22D11/20; B22D27/02; C22B9/16; C22B34/12
Domestic Patent References:
| JP2010247202A | ||||
| JP2007039807A | ||||
| JP2020022976A | ||||
| JP62077427A | ||||
| JP51018909A | ||||
| JP63128134A | ||||
| JP2017121650A | ||||
| JP2013212518A |
Foreign References:
| WO2008078402A1 | ||||
| WO2013151061A1 |
Attorney, Agent or Firm:
Axis International Patent Attorney Corporation