JP3188845B2 - Method and apparatus for testing bottom strength of ceramic bottomed hollow tube - Google Patents
Method and apparatus for testing bottom strength of ceramic bottomed hollow tubeInfo
- Publication number
- JP3188845B2 JP3188845B2 JP26400596A JP26400596A JP3188845B2 JP 3188845 B2 JP3188845 B2 JP 3188845B2 JP 26400596 A JP26400596 A JP 26400596A JP 26400596 A JP26400596 A JP 26400596A JP 3188845 B2 JP3188845 B2 JP 3188845B2
- Authority
- JP
- Japan
- Prior art keywords
- hollow tube
- bottomed hollow
- tube
- outer diameter
- pressurizing
- 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
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】 本発明は、セラミックス製
有底中空管の管底強度試験方法及び装置に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for testing the strength of a bottomed hollow tube made of ceramics.
【０００２】[0002]
【従来の技術】 従来、セラミックス製有底中空管の管
底強度の試験方法としては、図２に示すように、有底中
空管１の外周面を保持手段２により保持し、前記有底中
空管の底面のみに外側から接して所定の力で加圧するた
めの、前記底面の外形状に一致する上面形状を備えた加
圧媒体３を介して、前記保持手段と同軸上に設けられ、
前記加圧媒体に連結された加圧手段４により、前記有底
中空管と同軸方向に加圧するセラミックス製有底中空管
の管底強度試験方法試験方法が提案されている（特公平
７−４３３０５号公報）。2. Description of the Related Art Conventionally, as a method of testing the bottom strength of a ceramic bottomed hollow tube, as shown in FIG. Provided coaxially with the holding means via a pressurizing medium 3 having an upper surface shape corresponding to the outer shape of the bottom surface for pressurizing with a predetermined force by contacting only the bottom surface of the bottom hollow tube from the outside. And
There has been proposed a method for testing the bottom strength of a ceramic bottomed hollow tube which is pressurized coaxially with the bottomed hollow tube by a pressurizing means 4 connected to the pressurized medium (Japanese Patent Publication No. Hei 7 (1994)). -43305).
【０００３】[0003]
【発明が解決しようとする課題】 しかしながら、前記
の方法は、図３に示すような、燃料電池等に用いられ
る、中空管５の開口端の一方を管側壁の内面に接合部を
有する底面６により封じたセラミックス製有底中空管に
おいて、その底部と管側壁の内面との接合部の接合強度
の試験を行うことを目的としたものである。However, the above-mentioned method uses, as shown in FIG. 3, a bottom surface having one of the open ends of a hollow tube 5 having a joint on the inner surface of the tube side wall, which is used for a fuel cell or the like. The purpose of the present invention is to test the joint strength of the joint between the bottom and the inner surface of the side wall of the ceramic bottomed hollow tube sealed with 6.
【０００４】 ところで、ナトリウム−硫黄電池等に用
いられる固体電解質管もセラミックス製の有底中空管で
はあるが、前記有底中空管と異なり、一体成形により製
造されているため、図４に示すように、底部と管側壁と
の接合部を有していない。更に、前記固体電解質管は、
ナトリウム−硫黄電池の充放電、若しくは昇降温の際に
管内に生成する多硫化ナトリウムの挙動により、図５に
示すように、管底中心部７、管底エッヂ部８に対して、
引張応力が掛かることが判明している。[0004] Incidentally, a solid electrolyte tube used for a sodium-sulfur battery or the like is also a hollow tube with a bottom made of ceramics. Unlike the hollow tube with a bottom, the solid electrolyte tube is manufactured by integral molding. As shown, there is no joint between the bottom and the tube side wall. Further, the solid electrolyte tube is
Due to the behavior of sodium polysulfide generated in the tube during charge / discharge of the sodium-sulfur battery or during temperature rise / fall, as shown in FIG.
It has been found that a tensile stress is applied.
【０００５】 このことから、前記固体電解質管におい
ては、管底中心部、管底エッヂ部の２箇所について管底
強度の試験を行う必要があるが、前記従来の方法では該
２箇所について強度試験を行うことは不可能であるとい
う問題点があった。従って、本発明は底部と管側壁との
接合部を有していないセラミックス製有底中空管の、管
底中心部、若しくは管底エッヂ部について、簡便かつ正
確に試験し得る、管底強度試験方法及び装置を提供する
ことを目的とする。[0005] For this reason, in the solid electrolyte tube, it is necessary to test the tube bottom strength at two places, that is, the center of the tube bottom and the edge of the tube bottom. There is a problem that it is impossible to do. Therefore, the present invention provides a simple and accurate test for the center of the bottom of the tube or the edge of the bottom of the ceramic bottom tube having no joint between the bottom and the side wall of the tube. It is an object to provide a test method and an apparatus.
【０００６】[0006]
【課題を解決するための手段】 すなわち、本発明によ
れば、一体成形された、底部と管側壁との接合部を有し
ていない有底中空管の外周面を保持手段により保持し、
前記有底中空管の底面のみに外側から接して所定の力で
加圧するための、前記底面の外形状に一致する上面形状
を備えた加圧媒体を介して、前記保持手段と同軸上に設
けられ、前記加圧媒体に連結された加圧手段により、前
記有底中空管と同軸方向に加圧するセラミックス製有底
中空管の管底強度試験方法であって、前記加圧媒体とし
て、その外径（ｄｔ：ｍｍ）が、有底中空管の外径（Ｄ
G：ｍｍ）と下記関係式（１）及び（２）を満足する２
種を用いることを特徴とするセラミックス製有底中空管
の管底強度試験方法が提供される。 （１／10）ＤG≦ｄｔ≦（１／２）ＤG … （１） （２／３）ＤG≦ｄｔ≦ＤG … （２）That is, according to the present invention, there is provided a joint portion between a bottom portion and a tube side wall which is integrally formed.
Not the outer peripheral surface of the bottomed hollow tube held by the holding means,
For pressurizing with a predetermined force by contacting only the bottom surface of the bottomed hollow tube from the outside, through a pressurizing medium having an upper surface shape corresponding to the outer shape of the bottom surface, coaxially with the holding means. A method for testing the bottom strength of a bottomed hollow tube made of ceramics, which is provided and pressurized coaxially with the bottomed hollow tube by a pressurizing means connected to the pressurized medium, wherein the pressurized medium is , Its outer diameter (dt: mm) is the outer diameter (D
G : mm) and 2 satisfying the following relational expressions (1) and (2):
A method for testing the bottom strength of a ceramic bottomed hollow tube characterized by using a seed is provided. (1/10) D G ≦ dt ≦ (1/2) D G ... (1) (2/3) D G ≦ dt ≦ D G ... (2)
【０００７】 さらに本発明によれば、一体成形され
た、底部と管側壁との接合部を有していない有底中空管
の外周面を保持する保持手段と、該保持手段と同軸上に
設けられた加圧手段とからなり、該加圧手段が前記有底
中空管の底面のみに外側から接して所定の力で加圧する
ための、前記底面の外形状に一致する上面形状を備えた
加圧媒体を備えたセラミックス製有底中空管の管底強度
試験装置において、前記加圧媒体の外径（ｄｔ：ｍｍ）
が、有底中空管の外径（ＤG：ｍｍ）と下記関係式
（１）及び（２）を満足する２種の加圧媒体を用いるこ
とを特徴とするセラミックス製有底中空管の管底強度試
験装置が提供される。 （１／10）ＤG≦ｄｔ≦（１／２）ＤG … （１） （２／３）ＤG≦ｄｔ≦ＤG … （２）Further, according to the present invention, an integrally molded
A holding means for holding the outer peripheral surface of the bottomed hollow tube having no joint between the bottom and the tube side wall; and a pressing means provided coaxially with the holding means. Means for contacting the bottom surface of the bottomed hollow tube only from the outside with a predetermined force, and for pressurizing with a predetermined force, a ceramic bottomed hollow having a pressurized medium having an upper surface shape corresponding to the outer shape of the bottom surface. In a pipe bottom strength test device, the outer diameter of the pressurized medium (dt: mm)
Using two types of pressurized media satisfying the outer diameter (D G : mm) of the bottomed hollow tube and the following relational expressions (1) and (2): Is provided. (1/10) D G ≦ dt ≦ (1/2) D G ... (1) (2/3) D G ≦ dt ≦ D G ... (2)
【０００８】[0008]
【発明の実施の形態】 本発明では、加圧媒体の外径が
有底中空管の外径に対して所定の範囲である加圧媒体を
２種類用いて管底強度の試験を行う。このようにして、
管底強度の試験を行うことにより、従来に比し、より簡
便かつ正確に、管底中心部、若しくは管底エッヂ部の２
箇所、ひいては管底部全体についての強度を知ることが
できる。BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a tube bottom strength test is performed by using two types of pressurized media whose outer diameter of a pressurized medium is within a predetermined range with respect to the outer diameter of a bottomed hollow tube. In this way,
By performing the tube bottom strength test, it is possible to more easily and accurately compare the tube bottom center portion or the tube bottom edge portion with the conventional one.
It is possible to know the strength of the spot, and thus the entire pipe bottom.
【０００９】 本発明においてセラミックス製有底中空
管は、一体成形により製造された、底部と管側壁との接
合部を有していない有底中空管を対象とする。ただし、
前記従来の方法と同様に、中空管の開口端を管側壁の内
面に接合部を有する底面により封じた有底中空管につい
ても、本発明による強度試験を行うことが可能である。In the present invention, the ceramic bottomed hollow tube is intended for a bottomed hollow tube manufactured by integral molding and having no joint between the bottom and the tube side wall. However,
Similarly to the above-mentioned conventional method, a strength test according to the present invention can be performed on a bottomed hollow tube in which the open end of the hollow tube is sealed with a bottom surface having a joint on the inner surface of the tube side wall.
【００１０】 本発明では、前記有底中空管が装填され
るべき部分の周囲を取り巻くように保持手段が配設され
ている。ここで保持手段とは、有底中空管の外周面を保
持する手段であって、有底中空管を管底面部から加圧し
て強度試験をする際に、前記有底中空管が加圧方向に対
して同軸上に、芯出しした状態で動かないように固定す
る手段である。In the present invention, the holding means is arranged so as to surround the portion where the bottomed hollow tube is to be loaded. Here, the holding means is means for holding the outer peripheral surface of the bottomed hollow tube, and when performing a strength test by pressing the bottomed hollow tube from the tube bottom portion, the bottomed hollow tube is This is a means for fixing coaxially with the pressing direction so as not to move in the centered state.
【００１１】 保持方法は、前記有底中空管の外周面を
挾持してもよく、あるいは把持してもよい。また、保持
力が不足する場合には、該保持手段の上方に更に保持手
段を設けてもよい。例えば、有底中空管と同軸上に設け
られ、リング状の弾性体を内向きに膨張させて有底中空
管の外周面を保持する部分を備えた油圧チャック等が好
適に用いられる。In the holding method, the outer peripheral surface of the bottomed hollow tube may be held or gripped. If the holding force is insufficient, a holding means may be further provided above the holding means. For example, a hydraulic chuck or the like provided coaxially with the bottomed hollow tube and provided with a portion for holding the outer peripheral surface of the bottomed hollow tube by expanding the ring-shaped elastic body inward is preferably used.
【００１２】 また、本発明では、加圧手段が有底中空
管が装填されるべき部分の下方に垂直に配設されるが、
該加圧手段を上方に垂直に配設し、有底中空管の底部を
上にして装填し、加圧するように装置を変更することも
可能である。ここで加圧手段とは、油圧、水圧等の流体
圧により推力を発生させる手段をいい、本発明において
は、発生させた推力を有底中空管の長手方向に伝達して
該有底中空管の強度を試験するため、垂直方向に配設さ
れる。例えば油圧シリンダー等が好適に用いられる。In the present invention, the pressurizing means is disposed vertically below the portion where the hollow tube with the bottom is to be loaded.
It is also possible to modify the apparatus so that the pressurizing means is arranged vertically upward, the bottomed hollow tube is loaded with the bottom up and pressurized. Here, the pressurizing means means a means for generating a thrust by a fluid pressure such as a hydraulic pressure or a water pressure, and in the present invention, the generated thrust is transmitted in a longitudinal direction of the bottomed hollow tube so as to generate the thrust. Installed vertically to test the strength of empty tubes. For example, a hydraulic cylinder or the like is preferably used.
【００１３】 また、この際に、加圧媒体と加圧手段の
間にロードセルを介在させ、加えた推力を正確に測定す
ることができる構造とすることも可能である。これによ
り所定の力を加えても底面が破壊されなかったものを良
品とすることができる。At this time, it is also possible to provide a structure in which a load cell is interposed between the pressurizing medium and the pressurizing means so that the applied thrust can be accurately measured. As a result, a product whose bottom surface is not broken even when a predetermined force is applied can be made a good product.
【００１４】 さらに、加圧手段の先端には、一方を装
填されるべき有底中空管の底面部外側のみに接するよう
に、他方を加圧手段に連結された加圧媒体が突設され
る。Further, a pressurizing medium having the other connected to the pressurizing means is protruded from the tip of the pressurizing means so that one of the pressurizing means is in contact only with the outside of the bottom of the bottomed hollow tube to be loaded. You.
【００１５】 ここで加圧媒体とは、加圧手段により発
生させた推力を前記有底中空管に伝達する媒体である。
加圧媒体の形状は、有底中空管との接触面が、底面の外
形状に一致させた曲面としてある。これにより底面に局
部的な集中荷重が作用するのを防止するとともに両者の
中心が合い易くなる。Here, the pressurized medium is a medium that transmits the thrust generated by the pressurizing means to the bottomed hollow tube.
The shape of the pressurized medium is a curved surface whose contact surface with the bottomed hollow tube matches the outer shape of the bottom surface. This prevents a localized concentrated load from acting on the bottom surface and facilitates the centering of the two.
【００１６】 また、加圧媒体の材質は、加圧による変
形が少なく、前記有底中空管との接触面の密着性を担保
できる材質が好ましい。例えば、硬質ゴム、硬質樹脂等
が好適に用いられる。Further, the material of the pressurizing medium is preferably a material which is less likely to be deformed by pressurization and which can ensure the adhesion of the contact surface with the bottomed hollow tube. For example, hard rubber, hard resin and the like are preferably used.
【００１７】 さらに、加圧媒体の外径（ｄｔ）は、有
底中空管の外径（ＤG）との関係式（１）、（２）によ
り決定される。すなわち、加圧媒体の外径ｄｔが、有底
中空管の外径ＤGとの下記関係式（１）で示す範囲の加
圧媒体を用いる場合には、図６に示すように前記有底中
空管の管底中心部に特異的に引張応力が掛かる。 （１／10）ＤG≦ｄｔ≦（１／２）ＤG … （１）Further, the outer diameter (dt) of the pressurized medium is determined by the relational expressions (1) and (2) with the outer diameter (D G ) of the bottomed hollow tube. That is, when the pressure outside diameter dt of the pressure medium is used pressurized medium in the regions shown by the following relational expression between the outer diameter D G of the bottomed hollow tube (1), the chromatic 6 Tensile stress is applied specifically to the center of the bottom of the hollow tube. (1/10) D G ≤dt≤ (1/2) D G (1)
【００１８】 この場合において、加圧媒体の外径ｄｔ
が（１／２）ＤG 以上となると、引張応力が管底中心部
のみならず管底エッヂ部にも分散し、正確な試験が困難
となる。また、ｄｔが（１／10）ＤG 以下となると、応
力発生部位が狭くなるという不具合がある。また、加圧
媒体の外径ｄｔが、有底中空管の外径ＤGとの下記関係
式（２）で示す範囲の加圧媒体を用いる場合には、図７
に示すように前記有底中空管の管底エッヂ部に特異的に
引張応力が伝達される。 （２／３）ＤG≦ｄｔ≦ＤG … （２）In this case, the outer diameter dt of the pressurized medium
If There becomes (1/2) D G above, a tensile stress is also dispersed in the tube bottom edge portion not Kansoko center only, accurate testing difficult. Further, when dt is (1/10) D G or less, there is a problem that stress producing site is narrowed. Further, when the outer diameter dt of the pressurizing medium, used pressurized medium in the regions shown by the following relational expression between the outer diameter D G of the bottomed hollow tube (2) 7
As shown in (1), the tensile stress is transmitted specifically to the bottom edge of the bottomed hollow tube. (2/3) D G ≦ dt ≦ D G (2)
【００１９】 この場合において、加圧媒体の外径ｄｔ
が（２／３）ＤG 以下となると、引張応力が管底エッヂ
部のみならず管底中心部にも分散し、正確な試験が困難
となる。また、ｄｔをＤG 以上としてもよいが、有底中
空管底部に接触しない部分は、有底中空管に推力を伝達
できないため、技術的に別段の意味をなさない。In this case, the outer diameter dt of the pressurized medium
If There becomes (2/3) D G below, the tensile stress is also dispersed in Kansoko center not the tube bottom edge portion only, accurate testing difficult. In addition, dt may be set to DG or more, but a portion that does not contact the bottom of the bottomed hollow tube cannot transmit thrust to the bottomed hollow tube, and therefore has no technical significance.
【００２０】 以下、本発明を図面を参照しながら説明
する。図１に示した装置において、９は機枠に固定され
たベースであり、その中央部の孔の部分に有底中空管１
０の外周面を保持するための油圧チャック１１が垂直に
設けられている。油圧チャック１１は上下にガイド部１
２を備えるとともに、中央に油圧の圧力によりリング状
の弾性体１３を内向きに膨張させて有底中空管１０の外
周面を保持する部分を備えたもので、有底中空管１０を
正確に芯出しした状態で確実に保持することができるも
のである。なお、保持力が不足する場合には、図中に想
像線で示したように油圧チャック１１を上方にも設ける
ことができる。Hereinafter, the present invention will be described with reference to the drawings. In the apparatus shown in FIG. 1, reference numeral 9 denotes a base fixed to a machine frame.
Hydraulic chuck 11 for holding the outer peripheral surface of 0 is provided vertically. Hydraulic chuck 11 has guide unit 1 vertically.
2 and a central portion provided with a portion for holding the outer peripheral surface of the bottomed hollow tube 10 by inflating the ring-shaped elastic body 13 inward by hydraulic pressure. It can be reliably held in an accurate centered state. If the holding force is insufficient, the hydraulic chuck 11 can be provided above as shown by the imaginary line in the figure.
【００２１】 １４は、この油圧チャック１１と同軸上
に設けられた加圧手段である。この加圧手段１４はベー
ス９の下方に垂直に設けられた油圧シリンダー１５と加
圧ロッド１６とその先端に突設された硬質ゴムからなる
加圧媒体１７とを含むものである。また、油圧シリンダ
ー１５と加圧ロッド１６との間にはロードセル１８が介
在させてあり、各瞬間の加圧力を正確に知ることができ
る構造となっている。Reference numeral 14 denotes a pressurizing unit provided coaxially with the hydraulic chuck 11. The pressurizing means 14 includes a hydraulic cylinder 15, a pressurizing rod 16 provided vertically below the base 9, and a pressurizing medium 17 made of hard rubber protruding from the tip thereof. In addition, a load cell 18 is interposed between the hydraulic cylinder 15 and the pressure rod 16 so that the pressing force at each moment can be accurately known.
【００２２】 このように構成された管底強度試験装置
においては、油圧チャック１１を開いた状態で有底中空
管１０を装置上方から挿入し、その底面を加圧手段１４
の加圧媒体１７の上に乗せる。この後、有底中空管１０
を油圧チャック１１の上下ガイド部１２及び加圧媒体１
７により芯出しし、次いで、油圧チャック１１に油圧を
供給して、有底中空管１０の外周面を強固にチャック
し、油圧シリンダー１５を作動させて加圧媒体１７によ
り有底中空管１０の底面のみを強く加圧することにより
管底強度試験を行うことができる。In the tube bottom strength test apparatus configured as described above, the bottomed hollow tube 10 is inserted from above the apparatus with the hydraulic chuck 11 opened, and the bottom surface is pressed by the pressing means 14.
On the pressurizing medium 17. Then, the bottomed hollow tube 10
Of the hydraulic chuck 11 and the pressurized medium 1
7, and then supply hydraulic pressure to the hydraulic chuck 11 to firmly chuck the outer peripheral surface of the bottomed hollow tube 10, actuate the hydraulic cylinder 15 and pressurize the bottomed hollow tube with the pressurized medium 17. A tube bottom strength test can be performed by strongly pressing only the bottom surface of the tube 10.
【００２３】[0023]
【実施例】 以下、本発明の実施例を更に詳細に説明す
るが、本発明はこれらの実施例に限定されるものではな
い。 （実施例１） 図１に示す装置において、有底中空管１
０として外径（ＤG）４５ｍｍの固体電解質管を用い、
加圧媒体１７の外径（ｄｔ）が有底中空管１０の外径
（ＤG）との下記関係式（１）を満足する外径１０ｍｍ
の加圧媒体１７を設置した後、加圧手段１４により１０
０Ｋｇｆ／ｃｍ2の油圧を加えた。 （１／10）ＤG≦ｄｔ≦（１／２）ＤG … （１） その結果、固体電解質管の管底中心部７に引張応力が掛
かり、その応力を測定したところ、５．４８Ｋｇｆ／ｍ
ｍ2であった。なお、管底エッヂ部８に掛かった引張応
力は０．７８Ｋｇｆ／ｍｍ2と無視できる程度であっ
た。この結果を表１に示す。EXAMPLES Hereinafter, examples of the present invention will be described in more detail, but the present invention is not limited to these examples. (Example 1) In the apparatus shown in FIG.
Using a solid electrolyte tube having an outer diameter (D G ) of 45 mm as 0,
The outer diameter (dt) of the pressurized medium 17 satisfies the following relational expression (1) with the outer diameter (D G ) of the bottomed hollow tube 10: 10 mm
After the pressurizing medium 17 is set,
A hydraulic pressure of 0 Kgf / cm 2 was applied. (1/10) D G ≦ dt ≦ (1/2) D G ... (1) As a result, it takes a tensile stress Kansoko center 7 of the solid electrolyte tube was measured for the stress, 5.48Kgf / m
m 2 . The tensile stress applied to the edge 8 of the tube bottom was 0.78 kgf / mm 2 , which was negligible. Table 1 shows the results.
【００２４】（実施例２） 実施例１と同様に、図１に
示す装置において、有底中空管１０として外径（ＤG）
４５ｍｍの固体電解質管を用い、加圧媒体１７の外径
（ｄｔ）が有底中空管の外径（ＤG）との下記関係式
（２）を満足する外径３８ｍｍの加圧媒体１７を設置し
た後、加圧手段１４により１００Ｋｇｆ／ｃｍ2の油圧
を加えた。 （２／３）ＤG≦ｄｔ≦ＤG … （２） その結果、固体電解質管の管底エッヂ部８に引張応力が
掛かり、その応力を測定したところ、８．８３Ｋｇｆ／
ｍｍ2であった。なお、管底中心部７に引張応力は発生
しておらず、圧縮応力のみが発生した。この結果を表１
に示す。[0024] Similarly to Example 2 Example 1, in the apparatus shown in FIG. 1, the outer diameter as the bottomed hollow tube 10 (D G)
Using a 45 mm solid electrolyte tube, the pressurizing medium 17 having an outer diameter of 38 mm which satisfies the following relational expression (2) with the outer diameter (dt) of the pressurized medium 17 with the outer diameter (D G ) of the bottomed hollow tube. Was installed, and a hydraulic pressure of 100 kgf / cm 2 was applied by the pressurizing means 14. (2/3) D G ≦ dt ≦ D G (2) As a result, a tensile stress was applied to the tube bottom edge 8 of the solid electrolyte tube, and the stress was measured to be 8.83 Kgf /
mm 2 . Note that no tensile stress was generated at the center 7 of the tube bottom, and only a compressive stress was generated. Table 1 shows the results.
Shown in
【００２５】（比較例１） 実施例１と同様に、図１に
示す装置において、有底中空管１０として外径（ＤG）
４５ｍｍの固体電解質管を用い、加圧媒体１７の外径
（ｄｔ）が有底中空管の外径（ＤG）との下記関係式
（３）を満足する外径２５ｍｍの加圧媒体を設置した
後、加圧手段１４により１００Ｋｇｆ／ｃｍ2の油圧を
加えた。 （１／２）ＤG＜ｄｔ＜（２／３）ＤG … （３）[0025] Similarly to Comparative Example 1 Example 1, in the apparatus shown in FIG. 1, the outer diameter as the bottomed hollow tube 10 (D G)
Using a 45 mm solid electrolyte tube, a pressurizing medium having an outer diameter of 25 mm that satisfies the following relational expression (3) with the outer diameter (dt) of the pressurizing medium 17 and the outer diameter (D G ) of the bottomed hollow tube is used. After the installation, a hydraulic pressure of 100 kgf / cm 2 was applied by the pressurizing means 14. (1/2) D G <dt <(2/3) D G (3)
【００２６】 その結果、図８に示すように固体電解質
管の管底中心部７および管底エッヂ部８の双方に引張応
力が掛かり、その応力を測定したところ、管底中心部は
３．２０Ｋｇｆ／ｍｍ2、管底エッヂ部は３．４８Ｋｇ
ｆ／ｍｍ2であった。このように、加圧媒体１７の外径
が本発明で指定する範囲を外れた場合には、応力が分散
し、管底中心部７または管底エッヂ部８に特異的に引張
応力を発生させ、且つ試験に十分な応力を得ることは不
可能となる。この結果を表１に示す。As a result, as shown in FIG. 8, a tensile stress is applied to both the tube bottom center 7 and the tube bottom edge 8 of the solid electrolyte tube. When the stress is measured, the center of the tube bottom is 3.20 kgf. / Mm 2 , the edge of the tube bottom is 3.48 kg
f / mm 2 . As described above, when the outer diameter of the pressurized medium 17 is out of the range specified by the present invention, the stress is dispersed, and a tensile stress is generated specifically in the center 7 of the tube bottom or the edge 8 of the tube bottom. In addition, it is impossible to obtain a sufficient stress for the test. Table 1 shows the results.
【００２７】[0027]
【表１】 [Table 1]
【００２８】[0028]
【発明の効果】 以上説明したように、本発明によれ
ば、加圧媒体の外径（ｄｔ）が、有底中空管の外径（Ｄ
G）の前記関係式（１）、（２）を満足する２種の加圧
媒体を用いるという簡便な方法により、他の部分への応
力発生を抑制しながら、管底中心部、若しくは管底エッ
ヂ部に特異的に引張応力を発生させることが可能とな
る。As described above, according to the present invention, the outer diameter (dt) of the pressurized medium is equal to the outer diameter (D
G ) A simple method of using two types of pressurized media satisfying the above-mentioned relational expressions (1) and (2), while suppressing the generation of stress on other portions, while controlling the center of the tube bottom or the tube bottom. It is possible to specifically generate a tensile stress in the edge portion.
【００２９】 このことにより、前記２種類の試験を行
えば、セラミックス製有底中空管の管底部全体の強度に
ついて正確に把握することが可能となる、極めて有効な
強度試験方法及び装置である。[0029] Thus, if the above two types of tests are performed, it is possible to accurately grasp the strength of the entire bottom portion of the hollow tube made of ceramics, which is an extremely effective strength test method and apparatus. .
【図１】本発明の一の実施形態を示す断面図である。FIG. 1 is a cross-sectional view showing one embodiment of the present invention.
【図２】従来技術の一の実施形態を示す断面図である。FIG. 2 is a cross-sectional view showing one embodiment of the prior art.
【図３】有底中空管の例を示す部分断面図である。FIG. 3 is a partial sectional view showing an example of a hollow tube with a bottom.
【図４】固体電解質管の例を示す部分断面図である。FIG. 4 is a partial sectional view showing an example of a solid electrolyte tube.
【図５】管底中心部と管底エッヂ部の位置を示す断面図
である。FIG. 5 is a cross-sectional view showing the position of a tube bottom center portion and a tube bottom edge portion.
【図６】本発明の一の実施例を示す部分断面図である。FIG. 6 is a partial sectional view showing one embodiment of the present invention.
【図７】本発明の別の実施例を示す部分断面図である。FIG. 7 is a partial sectional view showing another embodiment of the present invention.
【図８】本発明に対する比較例を示す部分断面図であ
る。FIG. 8 is a partial sectional view showing a comparative example with respect to the present invention.
１…有底中空管、２…保持手段、３…加圧媒体、４…加
圧手段、５…中空管、６…底面、７…管底中心部、８…
管底エッヂ部、９…ベース、１０…有底中空管、１１…
油圧チャック、１２…ガイド部、１３…リング状弾性
体、１４…加圧手段、１５…油圧シリンダー、１６…加
圧ロッド、１７…加圧媒体、１８…ロードセルDESCRIPTION OF SYMBOLS 1 ... hollow tube with a bottom, 2 ... holding means, 3 ... pressurizing medium, 4 ... pressurizing means, 5 ... hollow tube, 6 ... bottom surface, 7 ... center part of the tube bottom, 8 ...
Tube bottom edge, 9 ... Base, 10 ... Hollow tube with bottom, 11 ...
Hydraulic chuck, 12 guide part, 13 ring-shaped elastic body, 14 pressing means, 15 hydraulic cylinder, 16 pressure rod, 17 pressure medium, 18 load cell
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特公 平７−43305（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.7，ＤＢ名) G01N 3/00 - 3/62 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Patent Publication No. 7-43305 (JP, B2) (58) Field surveyed (Int. Cl. 7 , DB name) G01N 3/00-3/62
Claims (2)
部を有していない有底中空管の外周面を保持手段により
保持し、前記有底中空管の底面のみに外側から接して所
定の力で加圧するための、前記底面の外形状に一致する
上面形状を備えた加圧媒体を介して、前記保持手段と同
軸上に設けられ、前記加圧媒体に連結された加圧手段に
より、前記有底中空管と同軸方向に加圧するセラミック
ス製有底中空管の管底強度試験方法であって、 前記加圧媒体として、その外径（ｄｔ：ｍｍ）が、有底
中空管の外径（ＤG：ｍｍ）と下記関係式（１）及び
（２）を満足する２種を用いることを特徴とするセラミ
ックス製有底中空管の管底強度試験方法。 （１／10）ＤG≦ｄｔ≦（１／２）ＤG … （１） （２／３）ＤG≦ｄｔ≦ＤG … （２）1. A joint between a bottom portion and a tube side wall, which is integrally formed.
The outer surface of the bottomed hollow tube having no portion is held by holding means, and is contacted from the outside only with the bottom surface of the bottomed hollow tube and pressed with a predetermined force. Ceramics provided coaxially with the holding means via a pressurized medium having a matching top surface shape and pressurized coaxially with the bottomed hollow tube by pressurized means connected to the pressurized medium a tube bottom strength test method of manufacturing the bottomed hollow tube, as the pressurizing medium, the outer diameter (dt: mm) is the outer diameter of the bottomed hollow tube (D G: mm) and the following equation A method for testing the bottom strength of a ceramic bottomed hollow tube, characterized by using two types satisfying (1) and (2). (1/10) D G ≦ dt ≦ (1/2) D G ... (1) (2/3) D G ≦ dt ≦ D G ... (2)
部を有していない有底中空管の外周面を保持する保持手
段と、 該保持手段と同軸上に設けられた加圧手段とからなり、 該加圧手段が前記有底中空管の底面のみに外側から接し
て所定の力で加圧するための、前記底面の外形状に一致
する上面形状を備えた加圧媒体を備えたセラミックス製
有底中空管の管底強度試験装置において、 前記加圧媒体の外径（ｄｔ：ｍｍ）が、有底中空管の外
径（ＤG：ｍｍ）と下記関係式（１）及び（２）を満足
する２種の加圧媒体を用いることを特徴とするセラミッ
クス製有底中空管の管底強度試験装置。 （１／10）ＤG≦ｄｔ≦（１／２）ＤG … （１） （２／３）ＤG≦ｄｔ≦ＤG … （２）2. A joint between a bottom portion and a tube side wall, which is integrally formed.
Holding means for holding the outer peripheral surface of the bottomed hollow tube having no portion , and pressurizing means provided coaxially with the holding means, wherein the pressurizing means is provided on the bottomed hollow tube. In order to pressurize with a predetermined force in contact with only the bottom surface from the outside, in a tube bottom strength test device for a ceramic bottomed hollow tube provided with a pressurized medium having a top surface shape corresponding to the outer shape of the bottom surface, the outer diameter of the pressurizing medium (dt: mm) is the outer diameter of the bottomed hollow tube (D G: mm) and the following equation (1) and using two pressurized medium which satisfies (2) An apparatus for testing the bottom strength of a ceramic bottomed hollow pipe. (1/10) D G ≦ dt ≦ (1/2) D G ... (1) (2/3) D G ≦ dt ≦ D G ... (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26400596A JP3188845B2 (en) | 1996-10-04 | 1996-10-04 | Method and apparatus for testing bottom strength of ceramic bottomed hollow tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26400596A JP3188845B2 (en) | 1996-10-04 | 1996-10-04 | Method and apparatus for testing bottom strength of ceramic bottomed hollow tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10111228A JPH10111228A (en) | 1998-04-28 |
| JP3188845B2 true JP3188845B2 (en) | 2001-07-16 |
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ID=17397231
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26400596A Expired - Lifetime JP3188845B2 (en) | 1996-10-04 | 1996-10-04 | Method and apparatus for testing bottom strength of ceramic bottomed hollow tube |
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| JP (1) | JP3188845B2 (en) |
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| CN102620988B (en) * | 2012-03-13 | 2013-10-16 | 北京理工大学 | Device and method for testing mechanical properties of ceramic material under constraint condition |
| CN102607952B (en) * | 2012-03-13 | 2013-10-16 | 北京理工大学 | Experiment device and method for prestressing ceramic material |
| CN108776063A (en) * | 2018-08-21 | 2018-11-09 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of valve rigidity compression tester |
| CN111157380B (en) * | 2020-02-25 | 2022-06-21 | 五邑大学 | Hardness measurement device and method |
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1996
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| Publication number | Publication date |
|---|---|
| JPH10111228A (en) | 1998-04-28 |
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