JP2898466B2 - Deoxidation method of titanium or titanium alloy - Google Patents
Deoxidation method of titanium or titanium alloyInfo
- Publication number
- JP2898466B2 JP2898466B2 JP4104796A JP10479692A JP2898466B2 JP 2898466 B2 JP2898466 B2 JP 2898466B2 JP 4104796 A JP4104796 A JP 4104796A JP 10479692 A JP10479692 A JP 10479692A JP 2898466 B2 JP2898466 B2 JP 2898466B2
- Authority
- JP
- Japan
- Prior art keywords
- titanium
- alloy
- water
- titanium alloy
- cooled copper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、チタンまたはチタン合
金の脱酸方法に関する。The present invention relates to a method for deoxidizing titanium or a titanium alloy.
【０００２】[0002]
【従来の技術】従来より、チタン合金において、酸素は
伸び等の機械特性を損なうため、その含有量は低減され
ることが望まれるが、しかし、チタンまたはチタン合金
の脱酸方法はあまり知られていない。チタン酸化物の脱
酸方法として、ＣａＨ2 粉末や、ＣａＣｌ2 フラックス
を用いた方法があるが、構造用チタンまたはチタン合金
の用途には適さない。また、エレクトロンビーム精練で
は、酸素よりもチタンの蒸気圧のほうが高く、かえって
チタンまたはチタン合金中の酸素量が増加する。さら
に、耐火物るつぼを用いてチタン合金を溶解すると、る
つぼの酸化物が還元され、チタン合金中の酸素量が上昇
する。従って従来のチタン合金の溶解には、バキューム
アーク溶解等の水冷銅るつぼが使用されてきた。2. Description of the Related Art Conventionally, in titanium alloys, oxygen impairs mechanical properties such as elongation, so that its content has been desired to be reduced. However, methods for deoxidizing titanium or titanium alloys are not well known. Not. As a method of deoxidizing titanium oxide, there is a method using CaH 2 powder or CaCl 2 flux, but it is not suitable for use of structural titanium or titanium alloy. In electron beam scouring, the vapor pressure of titanium is higher than that of oxygen, and the amount of oxygen in titanium or a titanium alloy increases. Further, when the titanium alloy is melted using the refractory crucible, the oxide of the crucible is reduced, and the amount of oxygen in the titanium alloy increases. Therefore, a water-cooled copper crucible such as vacuum arc melting has been used for melting a conventional titanium alloy.
【０００３】[0003]
【発明が解決しようとする課題】しかし、これらの溶解
方法は、アーク溶解となるため、設備も大きくなり、ア
ルミニウムを含む合金では蒸発損失も大きい。そこで、
本発明は、高周波誘導型の水冷銅るつぼを用いること
で、合金溶湯とるつぼが非接触の誘導溶解を可能とし、
チタンまたはチタン合金を脱酸する方法を提供するもの
である。However, these melting methods involve arc melting, so the equipment is large, and alloys containing aluminum have a large evaporation loss. Therefore,
The present invention, by using a high-frequency induction type water-cooled copper crucible, the alloy melt and the crucible enable non-contact induction melting,
A method for deoxidizing titanium or a titanium alloy is provided.
【０００４】[0004]
【課題を解決するための手段】前記本発明によるチタン
またはチタン合金の脱酸方法は、高周波誘導型水冷銅る
つぼ中において、カルシウムまたカルシウム合金を溶融
状態のチタンまたはチタン合金に添加することにより、
チタンまたはチタン合金を脱酸することを特徴とする。The method for deoxidizing titanium or titanium alloy according to the present invention is characterized in that calcium or calcium alloy is added to molten titanium or titanium alloy in a high-frequency induction type water-cooled copper crucible.
It is characterized by deoxidizing titanium or a titanium alloy.
【０００５】カルシウム純分として０．０００２〜５．
０ｗｔ％添加することを特徴とする。[0005] 0.0002-5.
It is characterized by adding 0 wt%.
【０００６】[0006]
【作用】本発明によるチタンまたはチタン合金の脱酸方
法によると、溶解時、雰囲気を任意に選択でき、水冷銅
るつぼの外部からの汚染を防止し、チタンまたはチタン
合金の成分、温度等の均一を保持する。According to the method for deoxidizing titanium or a titanium alloy according to the present invention, the atmosphere can be arbitrarily selected at the time of melting, contamination from the outside of the water-cooled copper crucible is prevented, and the components and temperature of the titanium or titanium alloy are uniform. Hold.
【０００７】[0007]
【実施例】以下、本発明の実施例を図面にもとづいて説
明する。 実施例１ 水冷銅るつぼを用いて初期酸素濃度０．１３ｗｔ％のＴ
ｉＡｌ合金にＣａＡｌ合金を添加した。これにより最高
０．０２ｗｔ％まで脱酸ができた。実験結果は表１に示
すとおりである。Embodiments of the present invention will be described below with reference to the drawings. Example 1 Using a water-cooled copper crucible, T at an initial oxygen concentration of 0.13 wt%
A CaAl alloy was added to the iAl alloy. As a result, deoxidation was achieved up to a maximum of 0.02 wt%. The experimental results are as shown in Table 1.
【０００８】[0008]
【表１】 [Table 1]
【０００９】表１において、Ｃａ／ＯにおけるＯは、元
のＴｉＡｌ中の酸素量（原子％）を示す。 実施例２ ＣａＯるつぼを用いて、初期酸素濃度０．１１３ｗｔ％
のＮｉＴｉ合金にＮｉＣａ合金を添加した。このＮｉＣ
ａ合金の添加による酸素減少は、０．０７７ｗｔ％であ
った。In Table 1, O in Ca / O indicates the oxygen content (atomic%) in the original TiAl. Example 2 Using a CaO crucible, an initial oxygen concentration of 0.113 wt%
The NiCa alloy was added to the NiTi alloy. This NiC
The decrease in oxygen due to the addition of alloy a was 0.077 wt%.
【００１０】ＮｉＴｉの脱酸実験結果は表２に示すとお
りである。Ｃａ添加量が多い割りには脱酸効果が少ない
ことがわかる。 The results of the deoxidation experiment of NiTi are shown in Table 2. Deoxidation effect is low when Ca content is large
You can see that.
【００１１】[0011]
【表２】 [Table 2]
【００１２】表１に示されるように、水冷銅るつぼを用
いると、非接触溶解のため、るつぼ材質からの汚染がな
い。磁気誘導によりフレミングの法則で示される磁気力
は溶湯に加わる。その結果、溶湯には内向きの磁気力が
加わるのに対し脱酸生成物には磁気力が加わらないた
め、溶湯表面に脱酸生成物が集積し、後工程の除去が容
易になる。As shown in Table 1 , when a water-cooled copper crucible is used, there is no contamination from the crucible material due to non-contact melting. The magnetic force given by Fleming's law by magnetic induction is applied to the molten metal. As a result, an inward magnetic force is applied to the molten metal, while no magnetic force is applied to the deoxidized product, so that the deoxidized product accumulates on the surface of the molten metal, thereby facilitating removal in a subsequent step.
【００１３】なお、前述の実験で用いた水冷銅るつぼ装
置の模式図は、図１に示すとおりである。図１に示すよ
うに、水冷銅るつぼ装置１は、中央部分に水冷銅るつぼ
２を備え、この水冷銅るつぼ２の外周部に高周波誘導加
熱用コイル４が設けられている。水冷銅るつぼ２は、る
つぼ軸方向に電気的絶縁スリットを有する円弧状の水冷
銅製セグメントを環状に配設し、各水冷銅製セグメント
には水冷パイプを設け、この水冷パイプに冷却水を流れ
るようにした構造をもつ。この水冷銅るつぼ２と高周波
誘導加熱用コイル４とでコールドクルーシブルレビテー
ション溶解炉が構成される。A schematic diagram of the water-cooled copper crucible device used in the above-mentioned experiment is as shown in FIG. As shown in FIG. 1, the water-cooled copper crucible device 1 includes a water-cooled copper crucible 2 at a central portion, and a high-frequency induction heating coil 4 is provided on an outer peripheral portion of the water-cooled copper crucible 2. In the water-cooled copper crucible 2, arc-shaped water-cooled copper segments each having an electrically insulating slit in the crucible axial direction are arranged in a ring shape, and each water-cooled copper segment is provided with a water-cooled pipe so that cooling water flows through the water-cooled pipe. With a structure that The water-cooled copper crucible 2 and the high-frequency induction heating coil 4 constitute a cold crucible levitating melting furnace.
【００１４】[0014]
【発明の効果】以上説明したように、本発明のチタン合
金の脱酸方法によると、チタンまたはチタン合金の組成
中の酸素成分を外部からの汚染が発生することなく充分
に低減することができるという効果がある。As described above, according to the method for deoxidizing a titanium alloy of the present invention, the oxygen component in the composition of titanium or a titanium alloy can be sufficiently reduced without generating external contamination. This has the effect.
【図１】本発明の第１実施例による水冷銅るつぼを示す
図である。FIG. 1 is a view showing a water-cooled copper crucible according to a first embodiment of the present invention.
Claims (1)
カルシウムまたはカルシウム合金を溶融状態のチタンま
たはチタン合金に添加することにより、チタンまたはチ
タン合金を脱酸し、磁気力により溶湯表面に脱酸生成物
を集積させることを特徴とするチタンまたはチタン合金
の脱酸方法。In a high frequency induction type water-cooled copper crucible,
By calcium or adding calcium alloy titanium or titanium alloy in a molten state, the titanium or titanium alloy deoxidation, deoxidation product melt surface by magnetic force
Deoxidation method of titanium or a titanium alloy, characterized in that to integrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4104796A JP2898466B2 (en) | 1992-04-23 | 1992-04-23 | Deoxidation method of titanium or titanium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4104796A JP2898466B2 (en) | 1992-04-23 | 1992-04-23 | Deoxidation method of titanium or titanium alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05295470A JPH05295470A (en) | 1993-11-09 |
| JP2898466B2 true JP2898466B2 (en) | 1999-06-02 |
Family
ID=14390414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4104796A Expired - Lifetime JP2898466B2 (en) | 1992-04-23 | 1992-04-23 | Deoxidation method of titanium or titanium alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2898466B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5379583B2 (en) * | 2009-07-15 | 2013-12-25 | 株式会社神戸製鋼所 | Manufacturing method of ultra high purity alloy ingot |
| KR101384390B1 (en) * | 2009-07-15 | 2014-04-14 | 가부시키가이샤 고베 세이코쇼 | Method for producing alloy ingots |
| JP5395545B2 (en) * | 2009-07-15 | 2014-01-22 | 株式会社神戸製鋼所 | Manufacturing method of ultra high purity alloy ingot |
| JP6649816B2 (en) * | 2016-03-11 | 2020-02-19 | 株式会社神戸製鋼所 | Surface treatment method for Ti-Al alloy |
| JP7412197B2 (en) * | 2020-02-03 | 2024-01-12 | 株式会社神戸製鋼所 | Method for manufacturing Ti-Al alloy |
-
1992
- 1992-04-23 JP JP4104796A patent/JP2898466B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05295470A (en) | 1993-11-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |