JP2579407B2 - Method for producing β-alumina tube - Google Patents
Method for producing β-alumina tubeInfo
- Publication number
- JP2579407B2 JP2579407B2 JP4244887A JP24488792A JP2579407B2 JP 2579407 B2 JP2579407 B2 JP 2579407B2 JP 4244887 A JP4244887 A JP 4244887A JP 24488792 A JP24488792 A JP 24488792A JP 2579407 B2 JP2579407 B2 JP 2579407B2
- Authority
- JP
- Japan
- Prior art keywords
- molding
- pressure
- alumina
- cutting
- molded
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Secondary Cells (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、ナトリウム−硫黄電
池において固体電解質管として使用されるβ−アルミナ
管の製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a .beta.-alumina tube used as a solid electrolyte tube in a sodium-sulfur battery.
【０００２】[0002]
【従来の技術】従来、β−アルミナ管は顆粒状のβ−ア
ルミナ原料を所定の有底筒状に加圧成形した後、その表
面に切削加工を施し、その後脱脂し、焼成して、その端
部を切断することによって製造されている。2. Description of the Related Art Conventionally, a β-alumina tube is formed by pressing a granular β-alumina raw material into a predetermined bottomed cylindrical shape, then subjecting the surface to a cutting process, followed by degreasing and firing. Manufactured by cutting the ends.
【０００３】この場合、顆粒状のβ−アルミナ原料が加
圧成形されているため、成形後時間の経過とともに成形
物の外形寸法が膨張して元に戻る、いわゆるスプリング
バックの現象があることから、成形直後に切削を行うと
その後に外形寸法が大きくなってしまう。そのため、通
常加圧成形後６時間以上経過して外形寸法が安定してか
ら切削加工が行われている。In this case, since the granular β-alumina raw material is pressure-formed, there is a so-called springback phenomenon in which the external dimensions of the molded product expand and return to the original shape over time after molding. However, if cutting is performed immediately after molding, the outer dimensions increase afterwards. Therefore, the cutting process is usually performed after the external dimensions are stabilized after 6 hours or more after the pressure molding.
【０００４】[0004]
【発明が解決しようとする課題】ところが、加圧成形後
切削加工を行うまでに、６時間以上待たなければならな
いことから、成形物の保管スペースが必要となるととも
に、次の工程に至るまでの時間が長くなり、製造コスト
の上昇を招くという問題があった。However, since it is necessary to wait 6 hours or more before cutting after pressure molding, a storage space for the molded product is required, and the time required for the next step is reduced. There has been a problem that the time is lengthened and the manufacturing cost is increased.
【０００５】この発明はそのような従来の問題に着目し
てなされたものであって、その目的は、成形物の保管ス
ペースが不要になるとともに、工程間の間隔を短くで
き、製造コストを低減できるβ−アルミナ管の製造方法
を提供することにある。The present invention has been made in view of such conventional problems, and has as its object to eliminate the need for a storage space for molded articles, to shorten the interval between processes, and to reduce manufacturing costs. An object of the present invention is to provide a method for producing a β-alumina tube that can be used.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、第１の発明ではβ−アルミナ原料を所定の有底筒状
に加圧成形した後、その表面に対し焼成に至るまでの間
に経時的に膨張変形する量を見越して切削加工を行い、
次いでこれを焼成することを特徴とする。また、第２の
発明では前記加圧成形を乾式連続加圧成形法により行う
とともに、切削加工をセンターレス研削法により行うこ
とを特徴とする。In order to achieve the above object, in the first invention, after a β-alumina raw material is pressure-formed into a predetermined bottomed cylinder, the surface of the β-alumina raw material is fired until firing. Cutting in anticipation of the amount of expansion and deformation over time
Then, it is characterized by firing. According to a second aspect of the present invention, the pressure molding is performed by a dry continuous pressure molding method, and the cutting is performed by a centerless grinding method.
【０００７】[0007]
【作用】β−アルミナ原料は所定の有底筒状に加圧成形
される。加圧成形後、焼成に至るまでの間に経時的に膨
張変形する量を見越して切削加工が行われる。従って、
成形後に切削を行うまでの待ち時間を設けることなく、
速やかに次の工程に移行することができる。そして、脱
脂、焼成工程を経て、その端部を切断することによりβ
−アルミナ管が製造される。The β-alumina raw material is pressure-formed into a predetermined bottomed cylindrical shape. After pressure molding, cutting is performed in anticipation of the amount of expansion and deformation with time until firing. Therefore,
Without having to wait for cutting after molding,
It is possible to quickly move to the next step. Then, after the degreasing and baking steps, the end is cut to obtain β
An alumina tube is produced.
【０００８】また、加圧成形を乾式連続加圧成形法で、
かつ切削加工をセンターレス研削法により行うことか
ら、成形物が容易に、しかも迅速に得られ、多量生産に
好適である。[0008] The pressure molding is performed by a dry continuous pressure molding method.
In addition, since the cutting is performed by the centerless grinding method, a molded product can be obtained easily and quickly, which is suitable for mass production.
【０００９】[0009]
（第１実施例）以下に、この発明を具体化した一実施例
について、図面に従って説明する。(First Embodiment) An embodiment of the present invention will be described below with reference to the drawings.
【００１０】図１に示すように、円筒状をなし、上蓋２
と下蓋３を有する圧力容器１内には水Ｗが満たされてい
る。圧力容器１には挿通パイプ４が貫通固定され、この
挿通パイプ４には分岐部５を介して水タンク７に接続さ
れた接続配管６が取付けられている。この接続配管６の
分岐部５には分岐配管８が接続され、この分岐配管８は
高圧ポンプ９を介して水タンク７に接続されている。そ
して、高圧ポンプ９により高圧水が分岐配管８から接続
配管６、挿通パイプ４を介して圧力容器１内に注入さ
れ、圧力容器１内が２トン／cm2 の高圧に保持される。[0010] As shown in FIG.
The water W is filled in the pressure vessel 1 having the lower lid 3. An insertion pipe 4 is fixed through the pressure vessel 1, and a connection pipe 6 connected to a water tank 7 via a branch portion 5 is attached to the insertion pipe 4. A branch pipe 8 is connected to a branch portion 5 of the connection pipe 6, and the branch pipe 8 is connected to a water tank 7 via a high-pressure pump 9. Then, high-pressure water is injected into the pressure vessel 1 from the branch pipe 8 through the connection pipe 6 and the insertion pipe 4 by the high-pressure pump 9, and the pressure vessel 1 is maintained at a high pressure of 2 ton / cm 2 .
【００１１】この圧力容器１内の水中には、β−アルミ
ナ管を成形するための円柱状をなす成形器１０が沈めら
れている。図２に示すように、有底円筒状の成形容器１
１内にはゴム製の外面成形体１２が嵌入されるととも
に、この外面成形体１２の内側に成形用突起１４を有す
る内面成形体１３が嵌入されている。これら成形体１
２，１３によってβ−アルミナ管形状のキャビティ１５
が形成されている。そして、このキャビティ１５内に顆
粒状のβ−アルミナ原料Ａが充填される。また、成形容
器１１の一部には貫通孔１６が設けられ、圧力容器１内
の水圧が前記外面成形体１２に加わるようになってい
る。A cylindrical forming device 10 for forming a β-alumina tube is submerged in the water in the pressure vessel 1. As shown in FIG. 2, a bottomed cylindrical molding container 1
An outer molded body 12 made of rubber is fitted into 1, and an inner molded body 13 having a molding projection 14 is fitted inside the outer molded body 12. These compacts 1
2 and 13, a cavity 15 having a β-alumina tube shape
Are formed. Then, the granular β-alumina raw material A is filled in the cavity 15. Further, a through hole 16 is provided in a part of the molding container 11 so that the water pressure in the pressure container 1 is applied to the outer surface molded body 12.
【００１２】さて、図２に示すように、成形容器１１内
に外面成形体１２を嵌入した後、その中へ顆粒状のβ−
アルミナ原料Ａを充填し、さらに内面成形体１３を嵌入
する。次に、図１に示すように、この成形容器１１を圧
力容器１内の水中に投入して上蓋２をして密閉する。そ
して、高圧ポンプ９にて圧力水を圧力容器１内に所定圧
力に至るまで圧入する。このとき、圧力容器１内の水圧
は成形容器１１の貫通孔１６を介して外面成形体１２に
加えられる。従って、顆粒状のβ−アルミナ原料Ａが外
面成形体１２を介して圧縮成形される。As shown in FIG. 2, after the outer molded body 12 is fitted into the molded container 11, the granular β-
The alumina raw material A is filled, and the inner surface molded body 13 is further fitted. Next, as shown in FIG. 1, the molded container 11 is put into water in the pressure container 1, and the upper lid 2 is closed and sealed. Then, pressurized water is injected into the pressure vessel 1 by the high-pressure pump 9 until a predetermined pressure is reached. At this time, the water pressure in the pressure vessel 1 is applied to the outer molded body 12 through the through hole 16 of the molded vessel 11. Therefore, the granular β-alumina raw material A is compression-molded through the outer molded body 12.
【００１３】この圧縮成形された成形物は、図３に示す
ように、そのまま放置するとスプリングバックやβ−ア
ルミナ特有の水分吸収による膨潤作用などの原因によ
り、その外形寸法が徐々に大きくなるが、スプリングバ
ックの速さは形状的な影響を受けるため、開口部よりも
管底部の方が遅くなる。従って、スプリングバックによ
る寸法変化は成形後６時間以上経過しないとほぼ一定値
に達しない。そのため、図４の実線で示すように、この
実施例では成形直後の成形物の外形寸法が49.8mmである
のに対し、成形直後に0.3mm だけ外形を、いわゆるセン
ターレス研削盤により切削加工し、外形寸法を49.5mmと
した。その後、成形物の焼成を行ったところ、収縮して
焼成後の成形物の外形寸法は40.1mmであった。As shown in FIG. 3, the compression-molded product gradually increases in external dimensions due to springback and swelling due to the absorption of moisture specific to β-alumina when left as it is. Since the speed of the springback is affected by the shape, the speed at the bottom of the tube is lower than that at the opening. Therefore, the dimensional change due to springback does not reach a substantially constant value until 6 hours or more have elapsed after molding. Therefore, as shown by the solid line in FIG. 4, in this embodiment, the outer dimension of the molded product immediately after molding was 49.8 mm, but immediately after molding, the outer shape was cut by 0.3 mm using a so-called centerless grinder. The external dimensions were 49.5 mm. Thereafter, when the molded product was fired, the molded product shrunk and had an outer dimension of 40.1 mm after firing.
【００１４】なお、図中破線で示すように、従来の方法
では成形直後の外形寸法が同じく49.8mmであり、その後
６時間放置することにより約50.2mmまで外形寸法が増大
してから、切削加工を施して外形寸法を49.7mmとし、焼
成を行った。そのため、成形後切削を行うまでの待ち時
間の間、成形物を保管するスペースを必要とした。[0014] As shown by the broken line in the figure, in the conventional method, the external dimensions immediately after molding are also 49.8 mm, and after leaving for 6 hours, the external dimensions increase to about 50.2 mm. And sintering to 49.7 mm in external dimensions. Therefore, a space for storing the molded product is required during the waiting time until the cutting after molding.
【００１５】このように、この実施例においては成形直
後に、成形後に成形物が膨張復元する量を見越して切削
するようにしたことから、成形後の成形物の保管スペー
スを省略できる。また、成形後の６時間以上の待ち時間
が不要であるため、焼成工程に至るまでの間の間隔を短
くでき、その結果製造ラインを連続化することができて
製造コストの低減を図ることができる。 （第２実施例）次に、この発明を具体化した別の実施例
について説明する。As described above, in this embodiment, immediately after molding, cutting is performed in anticipation of the amount by which the molded product expands and recovers after molding, so that a storage space for the molded product after molding can be omitted. Further, since no waiting time of 6 hours or more after molding is required, the interval until the firing step can be shortened, and as a result, the production line can be made continuous and the production cost can be reduced. it can. (Second Embodiment) Next, another embodiment of the present invention will be described.
【００１６】この実施例では加圧成形を乾式連続成形法
で行うとともに、切削加工をセンターレス研削法で行
う。すなわち、図６に示すように、乾式連続成形装置
は、筒状の圧力容器２１と、その内周面に取着された成
形用のゴム型２２と、内底部に嵌入される下部成形型２
３と、上部に嵌入される成形用の上部ゴム型２４と、そ
の上に嵌着される蓋体２５とを備えている。前記圧力容
器２１とゴム型２２との間には、内部に圧力媒体である
水を収容する収容空間Ｓが形成されている。また、圧力
容器２１には加圧水を収容空間Ｓに供給する供給管２６
が挿通支持されている。前記ゴム型２２と、下部成形型
２３と、上部ゴム型２４とにより、β−アルミナ管成形
用のキャビティ２７が形成されている。In this embodiment, pressure molding is performed by a dry continuous molding method, and cutting is performed by a centerless grinding method. That is, as shown in FIG. 6, the dry-type continuous molding apparatus includes a cylindrical pressure vessel 21, a molding rubber mold 22 attached to the inner peripheral surface thereof, and a lower molding die 2 fitted into the inner bottom.
3, an upper rubber mold 24 for molding to be fitted into the upper part, and a lid 25 to be fitted thereon. An accommodation space S for accommodating water as a pressure medium is formed between the pressure vessel 21 and the rubber mold 22. A supply pipe 26 for supplying pressurized water to the storage space S is provided in the pressure vessel 21.
Are inserted and supported. The rubber mold 22, lower mold 23, and upper rubber mold 24 form a cavity 27 for β-alumina tube molding.
【００１７】そして、図５に示すように、圧力容器２１
内に下部成形型２３を嵌入した状態で、ホッパー２８か
らβ−アルミナ粉末Ａをキャビティ２７内に投入する。
次いで、図６に示すように、上部ゴム型２４を型締め
し、その上に蓋体２５を被せる。続いて、２トン／cm2
の加圧水を供給管２６から収容空間Ｓに供給してゴム型
２２及び上部ゴム型２４を加圧することにより、キャビ
ティ２７内のβ−アルミナ粉末を加圧成形する。Then, as shown in FIG.
The β-alumina powder A is put into the cavity 27 from the hopper 28 while the lower mold 23 is fitted therein.
Next, as shown in FIG. 6, the upper rubber mold 24 is clamped, and a lid 25 is put thereon. Then, 2 tons / cm 2
Is supplied from the supply pipe 26 to the housing space S to press the rubber mold 22 and the upper rubber mold 24, thereby pressure-forming the β-alumina powder in the cavity 27.
【００１８】次に、図７に示すように、蓋体２５及び上
部ゴム型２４を上方へ型開きするとともに、下部成形型
２３を下方へ型開きした後、有蓋円筒状に成形された成
形物Ｐを取り出す。このような操作を繰り返すことによ
り、成形物Ｐとしてのβ−アルミナ管が連続的に成形さ
れる。この乾式連続成形装置では、乾式であることか
ら、湿式に比べて操作が容易であるとともに、ゴム型２
２を圧力容器２１の内周面に予め取着し、このゴム型２
２を介して粉体を加圧成形するように構成したことか
ら、ゴム型２２を成形のたびに取着する必要がない。従
って、成形を迅速に行うことができ、多量生産が可能で
ある。Next, as shown in FIG. 7, the lid 25 and the upper rubber mold 24 are opened upward, and the lower molding die 23 is opened downward. Take out P. By repeating such an operation, a β-alumina tube as the molded product P is continuously molded. Since this dry-type continuous molding apparatus is a dry-type, it is easier to operate than a wet-type, and the rubber mold 2
2 is attached to the inner peripheral surface of the pressure vessel 21 in advance.
Since the powder is press-molded through the mold 2, the rubber mold 22 does not need to be attached each time it is molded. Therefore, molding can be performed quickly and mass production is possible.
【００１９】加えて、切削加工をセンターレス研削法に
より行う。すなわち、図８に示すように、研削砥石１７
と調整車１８との間でブレード１９に支持された成形物
Ｐを上方から下方へ又は水平方向へ連続的に移動させた
り、又は調整車１８の回転軸を研削砥石１７の回転軸と
ずらしたりする。このような研削法により、研削を連続
的に行うことができる。In addition, cutting is performed by a centerless grinding method. That is, as shown in FIG.
Moving the molded product P supported by the blade 19 between above and the adjustment wheel 18 continuously from above to below or horizontally, or displacing the rotation axis of the adjustment wheel 18 with the rotation axis of the grinding wheel 17. I do. With such a grinding method, grinding can be performed continuously.
【００２０】なお、この発明は上記実施例に限定される
ものではなく、発明の趣旨を逸脱しない範囲で例えば以
下のように構成を変更して具体化してもよい。 （イ）成形直後の切削量を成形物の外形寸法や成形圧力
に応じて、例えば外形寸法や成形圧力が大きくなったと
きには、切削量を多くするなど、適宜調整すること。 （ロ）成形直後に成形物を切削した後、直ちに、あるい
は所定時間例えば１日放置してから焼成を行うこと。 （ハ）切削加工を円筒研削盤等により行うこと。The present invention is not limited to the above embodiment, but may be embodied by changing the configuration as follows, for example, without departing from the spirit of the invention. (A) The cutting amount immediately after molding is appropriately adjusted according to the external dimensions and molding pressure of the molded product, for example, when the external dimensions and molding pressure increase, the cutting amount is increased. (B) Baking is performed immediately after molding, immediately after molding, or after leaving for a predetermined time, for example, one day. (C) Performing cutting with a cylindrical grinder or the like.
【００２１】[0021]
【発明の効果】以上詳述したように第１の発明によれ
ば、成形物の保管スペースを不要にできるとともに、工
程間の間隔を短くでき、製造コストの低減を図ることが
できるという優れた効果を奏する。また、第２の発明に
よれば、加圧成形を乾式連続加圧成形法により行い、切
削加工をセンターレス研削法により行うことから、β−
アルミナ管の製造を迅速かつ円滑に行うことができ、多
量生産が可能であるという効果が得られる。According to the first aspect of the present invention, as described in detail above, it is possible to eliminate the need for a storage space for molded articles, to shorten the interval between processes, and to reduce manufacturing costs. It works. According to the second aspect of the present invention, the pressure molding is performed by a dry continuous pressure molding method, and the cutting is performed by a centerless grinding method.
Alumina tubes can be manufactured promptly and smoothly, and the effect of mass production is obtained.
【図１】この発明を具体化した第１実施例の湿式加圧成
形装置を示す概略断面図である。FIG. 1 is a schematic sectional view showing a wet pressure molding apparatus according to a first embodiment of the present invention.
【図２】成形器を示す概略断面図である。FIG. 2 is a schematic sectional view showing a molding device.
【図３】加圧成形後の成形物の外形寸法と経過時間との
関係を示すグラフである。FIG. 3 is a graph showing the relationship between the external dimensions of a molded article after pressure molding and elapsed time.
【図４】成形物の外形寸法と加圧成形直後から焼成後ま
での経過時間との関係を示すグラフである。FIG. 4 is a graph showing the relationship between the external dimensions of a molded product and the elapsed time from immediately after pressure molding to after firing.
【図５】この発明を具体化した第２実施例の乾式加圧成
形装置の蓋体を開いた状態を示す概略断面図である。FIG. 5 is a schematic sectional view showing a state in which a lid of a dry-type pressure forming apparatus according to a second embodiment of the present invention is opened.
【図６】乾式加圧成形装置の型締めした状態を示す概略
断面図である。FIG. 6 is a schematic sectional view showing a state in which a mold of the dry-type pressure forming apparatus is clamped.
【図７】成形後に型開きした状態を分解して示す断面図
である。FIG. 7 is an exploded sectional view showing a state in which the mold is opened after molding.
【図８】センターレス研削装置を示す斜視図である。FIG. 8 is a perspective view showing a centerless grinding device.
１…圧力容器、１０…成形器、Ａ…β−アルミナ原料。 1: pressure vessel, 10: molding machine, A: β-alumina raw material.
Claims (2)
圧成形した後、その表面に対し焼成に至るまでの間に経
時的に膨張変形する量を見越して切削加工を行い、次い
でこれを焼成することを特徴とするβ−アルミナ管の製
造方法。1. After a β-alumina raw material is press-formed into a predetermined bottomed cylindrical shape, a cutting process is performed on its surface in anticipation of an amount of expansion and deformation with time until firing. A method for producing a β-alumina tube, characterized by firing this.
り行うとともに、切削加工をセンターレス研削法により
行うことを特徴とする請求項１に記載のβ−アルミナ管
の製造方法。2. The method for producing a β-alumina pipe according to claim 1, wherein the pressure molding is performed by a dry continuous pressure molding method, and the cutting is performed by a centerless grinding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4244887A JP2579407B2 (en) | 1992-09-14 | 1992-09-14 | Method for producing β-alumina tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4244887A JP2579407B2 (en) | 1992-09-14 | 1992-09-14 | Method for producing β-alumina tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0696797A JPH0696797A (en) | 1994-04-08 |
| JP2579407B2 true JP2579407B2 (en) | 1997-02-05 |
Family
ID=17125466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4244887A Expired - Lifetime JP2579407B2 (en) | 1992-09-14 | 1992-09-14 | Method for producing β-alumina tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2579407B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7438753B2 (en) * | 2019-12-27 | 2024-02-27 | 京セラ株式会社 | Generation device, generation system, control method for generation device, ceramic product manufacturing system, and ceramic product manufacturing method |
-
1992
- 1992-09-14 JP JP4244887A patent/JP2579407B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0696797A (en) | 1994-04-08 |
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