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Title:
チタン合金の溶解鋳造方法
Document Type and Number:
Japanese Patent JP7335510
Kind Code:
B2
Abstract:
To provide a solution casting method for titanium alloy capable of stably producing a titanium alloy ingot low in oxygen content.SOLUTION: A solution casting method for titanium alloy comprises: melting a raw material 18 including oxygen of less than 0.035 mass% by irradiating with an electron beam at an irradiation angle of 60deg or more but 85deg or less obliquely upward on a horizontal direction toward a raw material drop-starting position 18B from the upstream side of the position 18B in a movement direction while moving the material 18 to the position 18B; dropping a molten metal 2 obtained by melting on a hearth 15; irradiating the molten metal with the electron beam in which an irradiation calorie is controlled so that the average temperature of the surface of molten metal 2 in the hearth 15 becomes 1,670°C or more; separating a part of the molten metal 2 by cooling and coagulating in the hearth 15, and supplying the remaining molten metal 2 to a casting mold 16; irradiating the molten metal with the electron beam in which the irradiation calorie is controlled so that the average temperature of the surface of the molten metal 2 in the casting mold 16 becomes 1,670°C or more; and extracting the molten metal vertically downward while cooling in the casting mold 16.SELECTED DRAWING: Figure 1

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Inventors:
Toshiyuki Okui
Hideo Mizukami
Yoshihisa Shirai
Application Number:
JP2020017543A
Publication Date:
August 30, 2023
Filing Date:
February 05, 2020
Export Citation:
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Assignee:
Nippon Steel Corporation
International Classes:
C22B9/22; B22D21/06; B22D27/02; C22B34/12
Domestic Patent References:
JP2004232066A
JP2020015973A
JP2017121650A
JP2009079790A
JP2004169139A
JP8225980A
JP11350051A
Foreign References:
US20130327493
CN108384966A
US5273102
Attorney, Agent or Firm:
Patent Attorney Corporation Britus



 
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