JP2653963B2 - Manufacturing method of metal beryllium pebble - Google Patents
Manufacturing method of metal beryllium pebbleInfo
- Publication number
- JP2653963B2 JP2653963B2 JP5017555A JP1755593A JP2653963B2 JP 2653963 B2 JP2653963 B2 JP 2653963B2 JP 5017555 A JP5017555 A JP 5017555A JP 1755593 A JP1755593 A JP 1755593A JP 2653963 B2 JP2653963 B2 JP 2653963B2
- Authority
- JP
- Japan
- Prior art keywords
- metal beryllium
- pebble
- electrode
- metal
- consumable electrode
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
Description
【０００１】[0001]
【産業上の利用分野】本発明は、金属ベリリウムペブル
の製造方法に関するものである。The present invention relates to a method for producing a metal beryllium pebble.
【０００２】[0002]
【従来の技術】従来より、回転電極法により金属ベリリ
ウムペブルを製造する方法が本出願人により特開平３−
２２６５０８号公報に開示されている。この公報に示さ
れる金属ベリリウムペブルの製造方法によると、金属ベ
リリウム製の消耗電極と溶解電極との間にアークまたは
プラズマを発生させ、これにより、回転する消耗電極か
ら溶解した金属ベリリウムの液滴を遠心方向に飛散さ
せ、不活性ガス中を通過する間に冷却されて小石状に凝
固することにより金属ベリリウムペブルが得られる。2. Description of the Related Art Conventionally, a method for producing a metal beryllium pebble by a rotating electrode method has been disclosed by the present applicant in Japanese Patent Laid-Open Publication No.
No. 226508. According to the method for manufacturing a metal beryllium pebble disclosed in this publication, an arc or plasma is generated between a consumable electrode made of metal beryllium and a dissolving electrode, whereby droplets of metal beryllium dissolved from a rotating consumable electrode are discharged. The metal beryllium pebbles are obtained by being scattered in the centrifugal direction and cooled while passing through an inert gas and solidified into pebbles.
【０００３】このときの製造条件は、例えば消耗電極の
周速度：１００〜２，０００ｍ／分、ヘリウムガス圧：
０．１〜５ｋｇｆ／ｃｍ2 としていた。得られる金属ベ
リリウムペブルの平均粒径は、０．２〜２．０ｍｍであ
った。The manufacturing conditions at this time are, for example, the peripheral speed of the consumable electrode: 100 to 2,000 m / min, the helium gas pressure:
It was 0.1 to 5 kgf / cm 2 . The average particle size of the obtained metal beryllium pebble was 0.2 to 2.0 mm.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな金属ベリリウムペブルの製造方法によると、金属ベ
リリウムペブルの中央部近傍に孔が形成される。この孔
は、外周部に連通していない閉孔であり、空隙率が１〜
５体積％の範囲である。この閉孔は金属ベリリウムの凝
固収縮により形成されるものと推定される。However, according to such a method of manufacturing a metal beryllium pebble, a hole is formed near the center of the metal beryllium pebble. This hole is a closed hole not communicating with the outer peripheral portion, and has a porosity of 1 to
The range is 5% by volume. This closed hole is presumed to be formed by solidification shrinkage of metal beryllium.
【０００５】一方、核融合炉トリチウム増殖ブランケッ
ト容器内に上記のような金属ベリリウムペブルを充填し
て使用する場合、孔によって金属ベリリウムペブル自身
の圧潰荷重の低くなってしまう（５〜１０ｋｇｆ）こ
と、また、孔によるベリリウム原子数の低下にともなっ
てトリチウム生成率が低下してしまう等の問題が生じて
いた。On the other hand, when the fusion reactor tritium breeding blanket container is filled with the above metal beryllium pebbles, the holes reduce the crushing load of the metal beryllium pebbles themselves (5 to 10 kgf). In addition, there has been a problem that the tritium generation rate is reduced as the number of beryllium atoms is reduced by the holes.
【０００６】本発明者によると、試行錯誤により各種条
件下での実験の結果、本発明による条件によって孔のな
い金属ベリリウムペブルを得ることができた。本発明
は、中央部近傍に孔のない金属ベリリウムペブルを製造
する方法を提供することを目的とする。According to the present inventors, as a result of experiments under various conditions by trial and error, a metal-free beryllium pebble having no pores was obtained under the conditions according to the present invention. An object of the present invention is to provide a method for manufacturing a metal beryllium pebble without a hole near the center.
【０００７】[0007]
【課題を解決するための手段】前記目的を達成するため
の本発明による金属ベリリウムペブルの製造方法は、不
活性ガスが充填された密閉容器内にアークまたはプラズ
マ溶解電極と金属ベリリウム製の消耗電極とを設け、両
電極間にアークまたはプラズマを発生させて前記消耗電
極を溶解させつつ遠心力により金属ベリリウムの溶滴を
飛散させて金属ベリリウムペブルを得る方法であって、
前記消耗電極の周速度を２，０００ｍ／分以上、前記密
閉容器内の不活性ガスの圧力を５〜１０ｋｇｆ／ｃｍ2
とすることを特徴とする。According to the present invention, there is provided a method for producing a metal beryllium pebble, comprising the steps of: providing an arc or plasma melting electrode and a consumable metal beryllium electrode in a closed vessel filled with an inert gas; And a method of obtaining a metal beryllium pebble by generating an arc or plasma between both electrodes and dispersing droplets of metal beryllium by centrifugal force while melting the consumable electrode,
The peripheral speed of the consumable electrode is 2,000 m / min or more, and the pressure of the inert gas in the closed container is 5 to 10 kgf / cm 2.
It is characterized by the following.
【０００８】[0008]
【作用】本発明の製造方法により得られる金属ベリリウ
ムペブルは、中央部近傍に孔のないものであった。The metal beryllium pebble obtained by the production method of the present invention has no hole near the center.
【０００９】[0009]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。小石状の金属ベリリウムペブルを回転電極法によ
り製造した。その製造方法は、まず不活性ガスが充填さ
れた密閉容器内にアーク溶解電極またはプラズマ溶解電
極を設け、この電極に対向する位置に消耗電極を設置
し、これら両電極間にアークまたはプラズマを発生させ
て消耗電極を溶解させ、回転によって飛散した金属ベリ
リウムの溶滴を急冷凝固させ、金属ベリリウムペブルを
製造するものである。Embodiments of the present invention will be described below with reference to the drawings. Pebble-shaped metal beryllium pebbles were produced by a rotating electrode method. First, an arc-melting electrode or a plasma-melting electrode is installed in a sealed container filled with an inert gas, and a consumable electrode is installed at a position facing the electrode, and an arc or plasma is generated between these electrodes. Then, the consumable electrode is melted, and droplets of metal beryllium scattered by rotation are rapidly cooled and solidified to produce a metal beryllium pebble.
【００１０】この方法を実施する装置の構成図を図１に
示す。この装置について説明すると、１は密閉容器であ
り、２は金属ベリリウムからなる消耗電極、３は水冷タ
ングステン製のアーク溶解電極またはプラズマ溶解電極
である。密閉容器１内の空気は排気孔４により排気さ
れ、導入孔５から密閉容器１内に不活性ガスが導入され
る。消耗電極２は、回転装置６により回転駆動される。
消耗電極２と溶解電極３との間にアークまたはプラズマ
を発生させ、金属ベリリウム製の消耗電極２を溶解させ
る。溶解された金属ベリリウムの溶滴は、一定の大きさ
になると遠心力により不活性ガス中に飛散し、密閉容器
１内の壁面に達するまでに凝固し、球状の金属ベリリウ
ム粒子となる。FIG. 1 shows a block diagram of an apparatus for performing this method. To explain this apparatus, 1 is a closed vessel, 2 is a consumable electrode made of metal beryllium, and 3 is an arc melting electrode or a plasma melting electrode made of water-cooled tungsten. The air in the sealed container 1 is exhausted through the exhaust hole 4, and an inert gas is introduced into the sealed container 1 from the introduction hole 5. The consumable electrode 2 is driven to rotate by a rotation device 6.
An arc or plasma is generated between the consumable electrode 2 and the dissolving electrode 3 to melt the consumable electrode 2 made of metal beryllium. When the molten metal beryllium droplets reach a certain size, they scatter in an inert gas due to centrifugal force and solidify by the time they reach the wall surface in the closed vessel 1 to form spherical metal beryllium particles.
【００１１】得られた金属ベリリウムペブルは、孔がな
いものであった。このときの消耗電極２の周速度は、
２，０００ｍ／分以上であった。また密閉容器１内の不
活性ガス圧は５〜１０ｋｇｆ／ｃｍ2 であった。本実施
例により得られた金属ベリリウムペブルの平均粒径は、
０．０５〜３ｍｍである。この金属ベリリウムペブルの
圧潰荷重は１２〜１５ｋｇｆであった。これに対し、従
来の金属ベリリウムペブルは中央部近傍に孔があり、平
均粒径は０．２〜２．０ｍｍであった。孔の容積は、１
〜５体積％であった。従来の金属ベリリウムペブルの圧
潰荷重は、孔のため５〜１０ｋｇｆと低かった。The resulting metal beryllium pebbles had no pores. The peripheral speed of the consumable electrode 2 at this time is
It was 2,000 m / min or more. The inert gas pressure in the sealed container 1 was 5 to 10 kgf / cm 2 . The average particle size of the metal beryllium pebble obtained by this example is
It is 0.05 to 3 mm. The crushing load of this metal beryllium pebble was 12 to 15 kgf. On the other hand, the conventional metal beryllium pebble had a hole near the center and had an average particle size of 0.2 to 2.0 mm. The volume of the hole is 1
５5% by volume. The crushing load of a conventional metal beryllium pebble was as low as 5 to 10 kgf due to the holes.
【００１２】本発明の実施例によると、金属ベリリウム
ペブルの中の孔を無くしたことで、ブランケット容器内
のベリリウム原子の量を増大させ、金属ベリリウムへの
中性子の衝突に起因するトリチウム生成率を向上させる
ことができる。According to an embodiment of the present invention, the elimination of holes in the metal beryllium pebbles increases the amount of beryllium atoms in the blanket vessel and reduces the rate of tritium production due to neutron impact on metal beryllium. Can be improved.
【００１３】[0013]
【発明の効果】以上説明したように、本発明による金属
ベリリウムペブルの製造方法によって、回転電極法にて
孔のない金属ベリリウムペブルを得られるようになっ
た。。As described above, the method for producing a metal beryllium pebble according to the present invention makes it possible to obtain a metal beryllium pebble without holes by the rotating electrode method. .
【図１】本発明の金属ベリリウムペブルの製造方法を実
施するための装置の一例を示す模式図である。FIG. 1 is a schematic view showing an example of an apparatus for implementing a method for producing a metal beryllium pebble of the present invention.
１ 密閉容器 ２ 消耗電極 ３ 溶解電極 1 Closed vessel 2 Consumable electrode 3 Dissolution electrode
Claims (1)
ーク溶解電極またはプラズマ溶解電極と金属ベリリウム
製の消耗電極とを設け、両電極間にアークまたはプラズ
マを発生させて前記消耗電極を回転させながら溶解さ
せ、遠心力により金属ベリリウムの溶滴を飛散させて金
属ベリリウムペブルを得る方法であって、 前記消耗電
極の周速度を２，０００ｍ／分以上、前記密閉容器内の
不活性ガスの圧力を５〜１０ｋｇｆ／ｃｍ2 とすること
を特徴とする金属ベリリウムペブルの製造方法。An arc melting electrode or a plasma melting electrode and a consumable electrode made of metal beryllium are provided in a closed vessel filled with an inert gas, and an arc or plasma is generated between the electrodes to rotate the consumable electrode. A method of obtaining a metal beryllium pebble by dispersing droplets of metal beryllium by centrifugal force to obtain a metal beryllium pebble, wherein the peripheral speed of the consumable electrode is 2,000 m / min or more, A method for producing a metal beryllium pebble, wherein the pressure is 5 to 10 kgf / cm 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5017555A JP2653963B2 (en) | 1993-02-04 | 1993-02-04 | Manufacturing method of metal beryllium pebble |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5017555A JP2653963B2 (en) | 1993-02-04 | 1993-02-04 | Manufacturing method of metal beryllium pebble |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06228674A JPH06228674A (en) | 1994-08-16 |
| JP2653963B2 true JP2653963B2 (en) | 1997-09-17 |
Family
ID=11947165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5017555A Expired - Lifetime JP2653963B2 (en) | 1993-02-04 | 1993-02-04 | Manufacturing method of metal beryllium pebble |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2653963B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998011556A1 (en) * | 1996-09-11 | 1998-03-19 | Japan Atomic Energy Research Institute | Metallic beryllium pebbles for nuclear fusion reactors |
| CN103084579B (en) * | 2013-01-28 | 2015-04-15 | 宝鸡市泛美材料科技有限公司 | Device and process for spherical powder production with rotating electrode |
| CN103600085A (en) * | 2013-09-12 | 2014-02-26 | 苏州米莫金属科技有限公司 | Novel powder metallurgy powder processing device |
| CN104475746B (en) * | 2014-11-25 | 2017-10-31 | 张建利 | Prepare the rotating centrifugal atomization process and device of beryllium and beryllium alloy bead |
| CN105689730A (en) * | 2016-02-24 | 2016-06-22 | 西安欧中材料科技有限公司 | Method for preparing Inconel 625 alloy spherical powder |
| CN114632941B (en) * | 2022-05-18 | 2022-09-09 | 西安欧中材料科技有限公司 | Equipment and method for improving batch stability of nickel-based metal spherical powder components |
-
1993
- 1993-02-04 JP JP5017555A patent/JP2653963B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06228674A (en) | 1994-08-16 |
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