JP3344126B2 - High temperature hardness tester - Google Patents
High temperature hardness testerInfo
- Publication number
- JP3344126B2 JP3344126B2 JP29525594A JP29525594A JP3344126B2 JP 3344126 B2 JP3344126 B2 JP 3344126B2 JP 29525594 A JP29525594 A JP 29525594A JP 29525594 A JP29525594 A JP 29525594A JP 3344126 B2 JP3344126 B2 JP 3344126B2
- Authority
- JP
- Japan
- Prior art keywords
- indenter
- load rod
- load
- hardness tester
- fixing member
- 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 - Fee Related
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、被試験体表面に形成さ
れた薄膜の強度等を、高温雰囲気で試験するための硬度
計に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hardness tester for testing the strength and the like of a thin film formed on the surface of a test object in a high-temperature atmosphere.
【０００２】[0002]
【従来の技術】試料に圧子を介して微小荷重を負荷し、
その負荷による試料の変形量を測定する硬度計は、破損
した圧子を交換したり、試験方法に応じて圧子を交換す
るために、圧子を負荷ロッドと分離する必要がある。ま
た、高温雰囲気（約７００°Ｃ）で試験を行うため、負
荷ロッドに連接された変位検出器や負荷装置に、高熱が
伝わらないよう、負荷ロッドには断熱性のあるセラミッ
クスを使用している。2. Description of the Related Art A minute load is applied to a sample via an indenter,
In a hardness tester that measures the amount of deformation of a sample due to the load, it is necessary to separate the indenter from the load rod in order to replace a damaged indenter or replace an indenter according to a test method. In addition, since the test is performed in a high-temperature atmosphere (about 700 ° C.), heat-insulating ceramics are used for the load rod so that high heat is not transmitted to the displacement detector and the load device connected to the load rod. .
【０００３】図３（ａ）は、このような高温硬度計にお
ける圧子と負荷ロッドとの固定部分の概略構成を示す図
であり、図３（ｂ）はその断面ＡＡ’を示す図である。
圧子１０１のジャーナル部分１０２は、負荷ロッド１０
３に設けられた圧子固定穴１０４に挿入される。そし
て、負荷ロッド１０３に螺合された押しネジ１０５を締
めることによって、その先端部１０６を圧子１０１の一
部に形成された平面部１０７に当接し、その当接部分に
対向した負荷ロッド１０３との接触部１０８に、圧子１
０１を押圧して固定する。なお、図３において、１０９
は負荷ロッドのガイド、１１０は恒温槽、１１１は恒温
槽からの熱の逃げを防止するベローである。FIG. 3A is a diagram showing a schematic configuration of a fixing portion between an indenter and a load rod in such a high-temperature hardness tester, and FIG. 3B is a diagram showing a cross section AA ′ thereof.
The journal portion 102 of the indenter 101 is
3 is inserted into the indenter fixing hole 104 provided in the indenter 3. Then, by tightening the push screw 105 screwed to the load rod 103, the distal end portion 106 abuts on the flat portion 107 formed on a part of the indenter 101, and the load rod 103 facing the abutting portion is formed. The indenter 1
Press 01 to fix. Note that in FIG.
Is a load rod guide, 110 is a thermostat, and 111 is a bellow for preventing heat from escaping from the thermostat.
【０００４】しかし、従来、押しネジ１０５は、圧子１
０１と同じ材質のステンレス鋼からなるため、高温雰囲
気では、セラミックスからなる負荷ロッド１０３に比べ
て熱膨張が大きく、負荷ロッド１０３に設けた押しネジ
１０５の螺合部１１２を圧迫し、破損させることがあっ
た。However, conventionally, the push screw 105 has been
Since it is made of the same material as stainless steel 01, in a high-temperature atmosphere, its thermal expansion is larger than that of the load rod 103 made of ceramics, and the screw portion 112 of the push screw 105 provided on the load rod 103 is pressed and damaged. was there.
【０００５】また、この熱膨張の差をなくすために、押
しネジ１０５について、負荷ロッド１０３と同じ材質の
セラミックスからなるものを選択することが考えられる
が、この場合でも、押しネジ１０５に比べてステンレス
鋼からなる圧子１０１の熱膨張が大きく、この圧子１０
１からの圧迫によって、押しネジ１０５が破損したり、
負荷ロッド１０３の螺合部１１２が破損する恐れがあ
る。In order to eliminate the difference in thermal expansion, it is conceivable to select a set screw 105 made of ceramics of the same material as the load rod 103. The thermal expansion of the indenter 101 made of stainless steel is large.
The pressure from 1 may damage the push screw 105,
The threaded portion 112 of the load rod 103 may be damaged.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、高温硬度計
において、上記した問題点を解決するために創案された
もので、その目的は、圧子や負荷ロッドを破損すること
なく、圧子を確実に負荷ロッドに固定することである。SUMMARY OF THE INVENTION The present invention has been devised to solve the above-mentioned problems in a high-temperature hardness tester, and has as its object to secure the indenter without damaging the indenter or the load rod. Fixed to the load rod.
【０００７】[0007]
【課題を解決するための手段】本発明は、試験片を押圧
する圧子と、この圧子の一部が挿入され固定される負荷
ロッドとを備え、高温雰囲気に置かれた試験片の硬さを
測定する高温硬度計において、前記負荷ロッドにおける
圧子挿入部の外周に、突起部を設けるとともに、この突
起部に係合される固定部材と、この固定部材に螺合さ
れ、前記負荷ロッドに穿設された孔を通過して、前記圧
子と負荷ロッドとの接触部分に圧子を押圧するねじ部材
とを設け、これらねじ部材と固定部材とは同じ材質から
なることを特徴とする。According to the present invention, there is provided an indenter for pressing a test piece, and a load rod into which a part of the indenter is inserted and fixed, and the hardness of the test piece placed in a high-temperature atmosphere is reduced. In the high-temperature hardness tester to be measured, a projection is provided on the outer periphery of the indenter insertion portion of the load rod, and a fixing member engaged with the projection, and a fixing member is screwed to the fixing member, and a hole is formed in the load rod. A screw member for pressing the indenter is provided at a contact portion between the indenter and the load rod through the formed hole, and the screw member and the fixing member are made of the same material.
【０００８】[0008]
【作用】負荷ロッドに形成された圧子挿入部に、圧子の
一部を挿入する。そして、固定部材に螺合された押しネ
ジを締めて、この押しネジ先端を圧子に当接し、さら
に、この当接部分と対向した負荷ロッドとの接触部分
に、圧子を押圧する。A part of the indenter is inserted into the indenter insertion portion formed in the load rod. Then, the push screw screwed into the fixing member is tightened, and the tip of the push screw is brought into contact with the indenter, and further, the indenter is pressed against the contact portion between the contact portion and the opposing load rod.
【０００９】[0009]
【実施例】図１（ａ）は本発明の実施例である高温硬度
計における圧子と負荷ロッドとの固定部の概略構成を示
す図、図１（ｂ）はその断面ＡＡ’を示す図であり、１
は負荷ロッド（材質：セラミックス）、２は圧子（材
質：ステンレス鋼）、３は圧子のジャーナル部、４は負
荷ロッドの圧子固定穴、５は負荷ロッドの突起部、６は
圧力リング、７は押しネジ（材質：ステンレス鋼）、８
は押しネジが通過する孔、９は押しネジの先端部、１０
は圧子の平面部、１１は恒温槽、１２は恒温層の切欠
部、１３はベロー、１４は負荷ロッドのガイド、１５は
押しネジの先端部と対向した圧子固定穴における圧子と
の接触部である。FIG. 1A is a diagram showing a schematic configuration of a fixing portion between an indenter and a load rod in a high-temperature hardness tester according to an embodiment of the present invention, and FIG. 1B is a diagram showing a cross section AA 'thereof. Yes, 1
Is a load rod (material: ceramics), 2 is an indenter (material: stainless steel), 3 is an indenter journal, 4 is a load rod indenter fixing hole, 5 is a load rod projection, 6 is a pressure ring, and 7 is a pressure ring. Set screw (material: stainless steel), 8
Is the hole through which the set screw passes, 9 is the tip of the set screw, 10
Is a flat portion of an indenter, 11 is a thermostat, 12 is a cutout of a thermostat layer, 13 is a bellow, 14 is a guide of a load rod, and 15 is a contact portion of the indenter fixing hole facing the tip of the set screw with the indenter. is there.
【００１０】次に、図１の高温硬度計における圧子と負
荷ロッドとの固定部分の構成を説明する。負荷ロッド１
下端側に、圧子２のジャーナル部分３が挿入される圧子
固定穴４を設けるとともに、外周に突起部５を設ける。
また、この突起部５に係合される圧力リング６と、この
圧力リング６に螺合される押しネジ７を設けるととも
に、この押しネジ７が貫通する孔８を負荷ロッド１に設
け、圧子２にはこの押しネジ７の先端部９が当接する平
面部１０を設ける。なお、孔８の孔径は、押しネジ７の
外径より十分に大きいものとする。さらに、高温雰囲気
を作るための恒温槽１１には、負荷ロッド１及び圧子２
が昇降できるよう切欠部１２が設けられるとともに、こ
の切欠部１２から内部の熱が逃げないように、負荷ロッ
ド１及び圧子２の昇降に伴って伸縮するベロー１３が備
えられる。Next, the structure of the fixed portion between the indenter and the load rod in the high-temperature hardness meter of FIG. 1 will be described. Load rod 1
An indenter fixing hole 4 into which the journal portion 3 of the indenter 2 is inserted is provided on the lower end side, and a protrusion 5 is provided on the outer periphery.
A pressure ring 6 engaged with the projection 5 and a push screw 7 screwed to the pressure ring 6 are provided, and a hole 8 through which the push screw 7 passes is provided in the load rod 1. Is provided with a flat portion 10 with which the tip 9 of the push screw 7 comes into contact. The diameter of the hole 8 is sufficiently larger than the outer diameter of the set screw 7. Further, a load rod 1 and an indenter 2 are provided in a thermostat 11 for creating a high-temperature atmosphere.
A notch 12 is provided so as to be able to move up and down, and a bellows 13 which expands and contracts as the load rod 1 and the indenter 2 move up and down so as to prevent internal heat from escaping from the notch 12.
【００１１】次に、図１における圧子と負荷ロッドとの
固定方法を、図２の高温硬度計の概略構成を用いて説明
する。試料台１６に試験片ＴＰを載置した後、試験片Ｔ
Ｐが所定の高温雰囲気の置かれるようコントローラ１７
へ指令する。この指令を受けたコントローラ１７は、熱
電対１８からの温度信号に基づいて加熱ヒータ１９を作
動させる。Next, a method of fixing the indenter and the load rod in FIG. 1 will be described with reference to the schematic configuration of the high-temperature hardness meter in FIG. After placing the test piece TP on the sample stage 16, the test piece T
Controller 17 so that P is placed in a predetermined high-temperature atmosphere.
Command. The controller 17 that has received this command operates the heater 19 based on the temperature signal from the thermocouple 18.
【００１２】このようにして、恒温槽２０内部を所定の
高温雰囲気に維持しながら、圧子２によって試験片ＴＰ
に所定の負荷を与える。圧子２が固定された負荷ロッド
１と電磁式の負荷装置２０とは、一般に知られた天秤構
造に配されており、コントローラ１７へ指令することに
よって負荷装置２０を作動させ、試験片ＴＰに圧子２に
よる負荷を与える。また、負荷ロッド１には、差動トラ
ンスからなる変位検出器２２が設けられており、負荷ロ
ッド１の変位、すなわち圧子２の試験片ＴＰへの押し込
み量が検出される。In this manner, the test piece TP is held by the indenter 2 while maintaining the inside of the thermostat 20 at a predetermined high temperature atmosphere.
Is given a predetermined load. The load rod 1 to which the indenter 2 is fixed and the electromagnetic load device 20 are arranged in a generally known balance structure, and the load device 20 is operated by instructing the controller 17 to instruct the test piece TP to the indenter. 2 load. The load rod 1 is provided with a displacement detector 22 composed of a differential transformer, and detects the displacement of the load rod 1, that is, the amount of pushing of the indenter 2 into the test piece TP.
【００１３】このような硬度計において、破損した圧子
２を交換したり、試験方法に応じて圧子２を交換する場
合、次のようにして負荷ロッド１へ圧子２を固定する。
図１において、負荷ロッド１に設けた圧子固定穴４へ、
圧子２のジャーナル部３を挿入する。このとき、平面部
１０が負荷ロッド１の孔８の側へ向くようにする。そし
て、圧力リング６に螺合した押しネジ７を締めて、その
先端部９を圧子２の平面部１０に当接させる。さらに、
押しネジ７を締めることにより、押しネジ７の先端部９
とこの先端部９と対向した圧力リング６の部分との間隔
を狭め、圧子固定穴４の接触部１５に圧子２を押圧す
る。これによって、圧子２は負荷ロッド１に固定され
る。In such a hardness tester, when replacing the damaged indenter 2 or replacing the indenter 2 according to the test method, the indenter 2 is fixed to the load rod 1 as follows.
In FIG. 1, to an indenter fixing hole 4 provided in the load rod 1,
The journal part 3 of the indenter 2 is inserted. At this time, the flat portion 10 is directed toward the hole 8 of the load rod 1. Then, the push screw 7 screwed to the pressure ring 6 is tightened, and the tip 9 is brought into contact with the flat portion 10 of the indenter 2. further,
By tightening the push screw 7, the tip 9
The distance between the front end 9 and the opposing portion of the pressure ring 6 is reduced, and the indenter 2 is pressed against the contact portion 15 of the indenter fixing hole 4. Thereby, the indenter 2 is fixed to the load rod 1.
【００１４】ところで、押しネジ７は、負荷ロッド１
（材質：セラミックス）において、押しネジ７の外径よ
り十分に大きい孔径の孔８を通過するので、高温雰囲気
でこの押しネジ７が膨脹しても、負荷ロッド１を圧迫す
ることがない。また、圧子２、圧力リング６及び押しネ
ジ７は、同じ材質のステンレス鋼からなるため、高温雰
囲気に置かれても、熱膨脹の差によって互いの部材を圧
迫することがない。したがって、高温雰囲気において
も、負荷ロッド等の部品は破損することがなくなった。By the way, the push screw 7 is connected to the load rod 1.
Since the material (ceramic) passes through the hole 8 having a hole diameter sufficiently larger than the outer diameter of the push screw 7, even if the push screw 7 expands in a high-temperature atmosphere, the load rod 1 is not pressed. Further, since the indenter 2, the pressure ring 6, and the set screw 7 are made of stainless steel of the same material, even if placed in a high temperature atmosphere, they do not press each other due to the difference in thermal expansion. Therefore, even in a high-temperature atmosphere, parts such as the load rod do not break.
【００１５】また、本発明は、以下のような構成例も含
む。The present invention also includes the following configuration examples.
【００１６】（１）固定部材は、ドーナツ形状のみなら
ず、その一部を切り欠いた形状でも、押しネジ７のねじ
締めによって、押しネジの先端部９とそれに対向した部
分との間隔が狭くなるようなものであればよい。すなわ
ち、試験片を押圧する圧子と、この圧子の一部が挿入さ
れ固定される負荷ロッドとを備え、高温雰囲気に置かれ
た試験片の硬さを測定する高温硬度計において、前記負
荷ロッドにおける圧子挿入部の外周に、突起部を設ける
とともに、この突起部に係合される円弧形状の固定部材
と、この固定部材に螺合され、前記負荷ロッドに穿設さ
れた孔を通過して、前記圧子と負荷ロッドとの接触部分
に圧子を押圧するねじ部材とを設け、これらねじ部材と
固定部材とは同じ材質からなることを特徴とする高温硬
度計。(1) Even if the fixing member is not only a donut shape but also a shape in which a part of the fixing member is cut out, the space between the tip end portion 9 of the push screw and a portion opposed thereto is narrowed by tightening the push screw 7. What is necessary is just what becomes. That is, a high-temperature hardness tester for measuring the hardness of a test piece placed in a high-temperature atmosphere, comprising an indenter for pressing a test piece and a load rod to which a part of the indenter is inserted and fixed, A protrusion is provided on the outer periphery of the indenter insertion portion, and an arc-shaped fixing member engaged with the protrusion is screwed to the fixing member, passing through a hole formed in the load rod, A high-temperature hardness tester wherein a screw member for pressing the indenter is provided at a contact portion between the indenter and the load rod, and the screw member and the fixing member are made of the same material.
【００１７】（２）突起部５についても、負荷ロッド１
の外周全体に設ける必要はなく、圧力リング６等固定部
材の一部を支持するものでもよい。すなわち、試験片を
押圧する圧子と、この圧子の一部が挿入され固定される
負荷ロッドとを備え、高温雰囲気に置かれた試験片の硬
さを測定する高温硬度計において、前記負荷ロッドにお
ける圧子挿入部の外周の一部に、突起部を設けるととも
に、この突起部に係合される固定部材と、この固定部材
に螺合され、前記負荷ロッドに穿設された孔を通過し
て、前記圧子と負荷ロッドとの接触部分に圧子を押圧す
るねじ部材とを設け、これらねじ部材と固定部材とは同
じ材質からなることを特徴とする高温硬度計。(2) Regarding the projection 5, the load rod 1
It is not necessary to provide it on the entire outer periphery, and a part of the fixing member such as the pressure ring 6 may be supported. That is, a high-temperature hardness meter for measuring the hardness of a test piece placed in a high-temperature atmosphere, comprising an indenter pressing a test piece and a load rod into which a part of the indenter is inserted and fixed, A projection is provided on a part of the outer periphery of the indenter insertion portion, and a fixing member engaged with the projection is screwed into the fixing member, passing through a hole formed in the load rod, A high-temperature hardness tester wherein a screw member for pressing the indenter is provided at a contact portion between the indenter and the load rod, and the screw member and the fixing member are made of the same material.
【００１８】[0018]
【発明の効果】本発明の具体的構成により、高温硬度計
において、圧子を固定するための押しネジが、負荷ロッ
ドを破損することがないので、圧子を負荷ロッドから脱
落させることなく、確実に固定することができるように
なった。According to the specific configuration of the present invention, in the high-temperature hardness tester, the push screw for fixing the indenter does not damage the load rod, so that the indenter does not fall off the load rod without fail. Can now be fixed.
【図１】本発明の実施例である高温硬度計における圧子
固定部付近の概略構成を示す図である。FIG. 1 is a diagram showing a schematic configuration near an indenter fixing portion in a high-temperature hardness tester according to an embodiment of the present invention.
【図２】本発明の実施例である高温硬度計の全体の概略
構成を示す図である。FIG. 2 is a diagram showing the overall schematic configuration of a high-temperature hardness tester according to an embodiment of the present invention.
【図３】従来の高温硬度計における圧子固定部付近の概
略構成を示す図である。FIG. 3 is a diagram showing a schematic configuration near an indenter fixing portion in a conventional high-temperature hardness tester.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) G01N 3/54 G01N 3/40 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) G01N 3/54 G01N 3/40
Claims (1)
部が挿入され固定される負荷ロッドとを備え、高温雰囲
気に置かれた試験片の硬さを測定する高温硬度計におい
て、前記負荷ロッドにおける圧子挿入部の外周に、突起
部を設けるとともに、この突起部に係合される固定部材
と、この固定部材に螺合され、前記負荷ロッドに穿設さ
れた孔を通過して、前記圧子と負荷ロッドとの接触部分
に圧子を押圧するねじ部材とを設け、これらねじ部材と
固定部材とは同じ材質からなることを特徴とする高温硬
度計。1. A high-temperature hardness tester for measuring the hardness of a test piece placed in a high-temperature atmosphere, comprising: an indenter for pressing a test piece, and a load rod into which a part of the indenter is inserted and fixed. A projection is provided on the outer periphery of the indenter insertion portion of the load rod, and a fixing member engaged with the projection is screwed to the fixing member, passing through a hole formed in the load rod, A high-temperature hardness tester wherein a screw member for pressing the indenter is provided at a contact portion between the indenter and the load rod, and the screw member and the fixing member are made of the same material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29525594A JP3344126B2 (en) | 1994-11-29 | 1994-11-29 | High temperature hardness tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29525594A JP3344126B2 (en) | 1994-11-29 | 1994-11-29 | High temperature hardness tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08152392A JPH08152392A (en) | 1996-06-11 |
| JP3344126B2 true JP3344126B2 (en) | 2002-11-11 |
Family
ID=17818228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29525594A Expired - Fee Related JP3344126B2 (en) | 1994-11-29 | 1994-11-29 | High temperature hardness tester |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3344126B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2494467B (en) * | 2011-09-12 | 2013-08-07 | Micro Materials Ltd | Test probe for materials testing apparatus |
| CN102944490B (en) * | 2012-11-29 | 2015-03-25 | 厦门大学 | High-temperature rigidity measuring method based on electrified heating |
| CN103293074B (en) * | 2013-05-31 | 2015-06-24 | 沈阳工业大学 | Rubber high-temperature hardness dynamic measurement device |
| CN108982268A (en) * | 2018-09-06 | 2018-12-11 | 河钢股份有限公司 | A kind of high-temperature hardness gauge that can carry out continuous alternating temperature multi-point sampler |
-
1994
- 1994-11-29 JP JP29525594A patent/JP3344126B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08152392A (en) | 1996-06-11 |
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