JP2649056B2 - Hot strength test equipment - Google Patents
Hot strength test equipmentInfo
- Publication number
- JP2649056B2 JP2649056B2 JP63101007A JP10100788A JP2649056B2 JP 2649056 B2 JP2649056 B2 JP 2649056B2 JP 63101007 A JP63101007 A JP 63101007A JP 10100788 A JP10100788 A JP 10100788A JP 2649056 B2 JP2649056 B2 JP 2649056B2
- Authority
- JP
- Japan
- Prior art keywords
- test
- furnace
- strength
- sample piece
- hot
- 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
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、熱間強度試験装置に関し、特に省エネルギ
ー化がはかれて、雰囲気の調節が可能な熱間強度試験装
置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot-strength test apparatus, and more particularly to a hot-strength test apparatus capable of controlling the atmosphere while saving energy.
従来の技術 従来、耐火煉瓦、セラミックス等の熱間における強度
を測定するのに、台車の上に試料片をそれぞれ載せて試
験炉内に搬送し、所定の抗折位置で試料片を抗折し、抗
折荷重を測定する方式が知られている。Conventional technology Conventionally, to measure the hot strength of refractory bricks, ceramics, etc., each of the specimens is placed on a trolley, transported into a test furnace, and bent at a predetermined bending position. A method for measuring a bending load is known.
また、試験炉内に試料片をバッチ式にして送り込み、
所定の温度に達したら試料片を順次抵抗するバッチ処理
方式が知られている。In addition, the sample pieces are sent into the test furnace in batch mode,
There is known a batch processing method in which a sample piece is sequentially resisted when a predetermined temperature is reached.
発明が解決しようとする課題 しかし、前者のものでは、台車を試験炉に搬入出する
ために試験炉として大きな容積を必要とし、また試料片
とともに台車も同時に加熱され、しかも台車の搬出によ
って試料片の10倍以上もの熱量が持ち去られるものであ
った。そのため、台車による試料片の搬送方式では、不
要な大熱量を必要とし、大量の電力を消費するととも
に、炉内の雰囲気調節用としてN2ガス等を吹き込んで
も、炉内容積が大きくて雰囲気調整ができないものであ
った。Problems to be Solved by the Invention However, in the former, a large volume is required as a test furnace in order to carry the cart into and out of the test furnace, and the cart is heated simultaneously with the sample pieces. More than 10 times the heat was carried away. Therefore, in the conveyance method of the test piece by truck, requiring unnecessary large amount of heat, together consume a large amount of power, even by blowing N 2 gas or the like as a controlled atmosphere in the furnace atmosphere adjusting large furnace volume Was not possible.
また、後者にあっては、バッチ処理数が十数本程度
で、きわめて能率が悪いものであった。In the latter case, the number of batch processes was about ten and several, which was extremely inefficient.
さらに、特開昭57−175939号公報や実開昭49−68487
号公報には、耐火物の熱間強度測定装置について提案さ
れているが、試験片をサヤに挿入して移送したり、単に
スペーサーを介挿して移送するものにすぎなく、試験片
を簡単に、安定して移送して確実に抗折できるものでな
かった。Further, JP-A-57-175939 and JP-A-49-68487
In the publication, a device for measuring the hot strength of refractories is proposed, but the test piece is transported by inserting it into a sheath, or is simply transported by inserting it through a spacer. However, it was not something that could be stably transferred and reliably defeated.
また、上記のものでは、試験炉内のO2濃度を0.1％以
下の雰囲気に調整したり、連続無人運転できるものでな
い。Further, the above-described method does not allow the O 2 concentration in the test furnace to be adjusted to an atmosphere of 0.1% or less, and does not allow continuous unmanned operation.
課題を解決する手段 本発明は上記のような点に鑑みたもので、上記の課題
を解決するために、耐火煉瓦、セラミックス等の試験片
を試験路に送給して強度試験機で熱間強度試験を行う熱
間強度試験装置において、両側端にガイドを所定高さに
突設した試料片摺動用のレール床材を試験炉の炉床に敷
設するとともに、この上に突設したレールに試料片をそ
の両側を上記両側端のガイド間に嵌装し、その試料片の
前後間に試料片の抗折の邪魔にならないように中央部を
凹設したスペーサーを介挿して試料片を一定ピッチで整
列して強度試験機に一定ピッチですべらせて送り込み自
在に移送装置を配設し、上記炉壁の上面に炉蓋を開閉可
能に嵌装して、上記送り込む試料片を温度コントローラ
ーを介して所要の温度に加熱して試験可能な程度の小容
量に試験炉を形成するとともに、上記小容量の試験炉に
不活性ガス吹き込み管を配設して不活性ガスを吹き込ん
で炉内のO2濃度を0.1％以下の雰囲気に調整可能とし、
上記した移送装置、強度試験機、温度コントローラーを
自動制御するようにコンピューターを配設し、試験する
試験片の曲げ強度、変位を出力自在として試験炉を連続
無人運転できるようにしたことを特徴とする熱間強度試
験装置を提供するにある。Means for Solving the Problems The present invention has been made in view of the above points, and in order to solve the above problems, a test piece such as a refractory brick, ceramics, etc. is fed to a test path, and a hot test is performed by a strength tester. In a hot-strength test apparatus for performing a strength test, a rail floor material for sliding a sample piece having guides protruding from both sides at a predetermined height is laid on a hearth of a test furnace, and a rail protruding therefrom is mounted on a rail protruding therefrom. The sample piece is fitted on both sides between the guides on both side ends, and the sample piece is fixed between the front and rear of the sample piece by inserting a spacer with a concave central part so as not to hinder the bending of the sample piece. A transfer device is arranged so that it can be sent to the strength tester at a constant pitch after being aligned at the pitch and the furnace lid can be opened and closed on the upper surface of the furnace wall. Small enough to be tested by heating to the required temperature In addition to forming a test furnace with the amount, an inert gas injection pipe is arranged in the small-capacity test furnace to blow an inert gas so that the O 2 concentration in the furnace can be adjusted to an atmosphere of 0.1% or less,
A computer is arranged to automatically control the above-described transfer device, strength tester, and temperature controller, and the bending strength and displacement of the test piece to be tested can be freely output so that the test furnace can be operated continuously and unattended. To provide a hot strength test apparatus.
実施例 以下、本考案を実施例にもとづいて説明する。Embodiment Hereinafter, the present invention will be described based on an embodiment.
第１図以下は、本発明の一実施例である。試験炉１は
電気炉方式のもので、第１図、第２図のように所定の厚
さで、やや横長のＵ字状断面とした耐火壁の炉壁２の上
面に炉蓋３を開閉可能に装着し、一端面側の試料片入口
４から耐火煉瓦等の試料片５を送り込んで、他端部側の
強度試験機６に送り、試験した試料片５を他端側の炉床
７部に開閉自在の排出口から排出するようにしている。
炉床７は炉壁２と一体的に形成していて、その上面に第
２図のように所定の間隔で平行にレール９を突設したレ
ール床材10を配設し、レール９の上に上記した試料片５
をスペーサー11を介して整列して搭載し、炉床７を外方
へ延設した端部に設けた電動シリンダーのような移送装
置12で定寸送りすることによって試料片５を強度試験機
６に送り込むようにしている。上記レール床材10の両側
部には、第２図のようにレール９にそってガイド13を突
設してこのガイド13間に試料片５も嵌装し、試料片５を
レール９にそって整列状態で移送できるようにしてい
る。また、スペーサー11は、第１図、第２図のように試
料片５よりやや背低くし、その中央部を凹設して抗折の
邪魔にならないようにしているとともに、高温下で化学
反応を起こさない高純度のアルミナ材質のものとしてい
る。また炉床７は、試料片５と化学反応を起こさないこ
とと、摩耗による損耗とから窒化珪素の材質を使用して
いる。FIG. 1 et seq. Show one embodiment of the present invention. The test furnace 1 is of an electric furnace type, and has a predetermined thickness as shown in FIGS. 1 and 2, and a furnace lid 3 is opened and closed on the upper surface of a refractory wall 2 having a slightly horizontal U-shaped cross section. A sample piece 5 such as a refractory brick is sent in from a sample piece inlet 4 on one end side and sent to a strength tester 6 on the other end side, and the tested sample piece 5 is placed in a hearth 7 on the other end side. The part is configured to discharge from an openable and closable discharge port.
The hearth 7 is formed integrally with the furnace wall 2, and a rail floor material 10 having rails 9 projecting in parallel at predetermined intervals as shown in FIG. Sample 5 described above
Are aligned and mounted via a spacer 11, and the hearth 7 is fixedly fed by a transfer device 12 such as an electric cylinder provided at an end extending outward, so that the specimen 5 is I send it to. On both sides of the rail floor material 10, guides 13 are protruded along the rails 9 as shown in FIG. 2, the sample pieces 5 are fitted between the guides 13, and the sample pieces 5 are aligned with the rails 9. So that they can be transported in an aligned state. The spacer 11 is slightly shorter than the sample piece 5 as shown in FIGS. 1 and 2, and its central portion is recessed so as not to obstruct bending, and at the same time, the It is made of a high-purity alumina material that does not cause cracking. The hearth 7 is made of silicon nitride because it does not cause a chemical reaction with the sample piece 5 and is worn due to abrasion.
強度試験機６は、第１図、第２図のように炉蓋３を貫
通してプランジャーのような抗折棒14を炉内に突き出
し、第１図のように試験炉１の端部から突き出した試料
片検出器15で位置検出して停止した試料片５を試験でき
るようにしている。強度試験機６は、第２図のように試
験炉１を跨ぐように架台35を架設して構成しており、架
台35に秤りのようにてこ機構で荷重レバー16を枢支し、
その中央部に垂直状に支持金具17を介して上記プランジ
ャーの抗折棒14を交換可能に垂設している。そして、図
のように荷重負荷装置18を荷重レバー16の一端に連結
し、荷重レバー16のてこ機構によって抗折棒14に所定の
荷重を負荷して抗折試験を行えるようにしている。ま
た、図のように荷重レバー16の他端に重り19を吊り下げ
て中央の抗折棒14が中立状態に支持されるようにしてお
り、荷重負荷側の荷重レバー16の一端側にロードセルの
ような荷重検出器20および歪ゲージまたは磁気ゲージの
ような変位計21を取着して荷重用スクリュー22を接続
し、パルスモーターのようなサーボモーター23で荷重用
スクリュー22を回転駆動し、荷重検出器20で試料片５の
抗折荷重を測定し、変位計21で試料片５の変位を測定で
きるようにしている。The strength tester 6 protrudes a bending rod 14 such as a plunger into the furnace by penetrating the furnace lid 3 as shown in FIGS. 1 and 2, and as shown in FIG. The position of the sample piece 5 is detected by a sample piece detector 15 protruding from the sample piece 5 and the stopped sample piece 5 can be tested. As shown in FIG. 2, the strength tester 6 is constructed by mounting a gantry 35 so as to straddle the test furnace 1, and pivots the load lever 16 on the gantry 35 with a leverage mechanism like a scale.
The plunger bar 14 of the plunger is vertically installed in the center of the plunger so as to be exchangeable via a support bracket 17. As shown in the figure, a load applying device 18 is connected to one end of the load lever 16, and a predetermined load is applied to the bending bar 14 by a leverage mechanism of the load lever 16, so that a bending test can be performed. Also, as shown in the figure, a weight 19 is suspended from the other end of the load lever 16 so that the center bending bar 14 is supported in a neutral state, and a load cell is mounted on one end of the load lever 16 on the load side. A load detector 22 such as a load gauge 20 and a strain gauge or a magnetic gauge are attached, a load screw 22 is connected, and the load screw 22 is rotationally driven by a servo motor 23 such as a pulse motor, and a load is applied. The bending load of the sample 5 is measured by the detector 20, and the displacement of the sample 5 is measured by the displacement meter 21.
また、炉蓋３には、第２図のようにカンタルスーパー
のようなヒーター24を一定間隔で配設していて、試料炉
１内を所定の温度に昇温して試料片５を加熱自在とし、
炉壁２の両側には不活性ガス吹き込み管25を一定間隔で
配設して、炉内にN2ガス、Arガス等の雰囲気ガスを吹き
込んで容易に炉内のO2濃度を0.1％以下に雰囲気調整で
きるようにしている。As shown in FIG. 2, heaters 24, such as Kanthal super, are arranged at regular intervals on the furnace cover 3, and the inside of the sample furnace 1 is heated to a predetermined temperature to freely heat the sample pieces 5. age,
Inert gas injection pipes 25 are arranged at regular intervals on both sides of the furnace wall 2, and an atmosphere gas such as N 2 gas or Ar gas is blown into the furnace to easily reduce the O 2 concentration in the furnace to 0.1% or less. Atmosphere can be adjusted.
上記のように形成した試料炉１は、第３図のようにパ
ーソナルコンピューターのようなコンピューター26で自
動制御できるようにしている。コンピューター26と接続
したシーケンサー27はプログラム設定により移送装置12
を駆動自在とし、抗折部の試料片検出器15で試料片５を
位置検出して順次抗折部に試料片５を送り込むように制
御している。また、温度コントローラー28を介して、コ
ンピューター26や試験炉１を所定の温度状態に管理でき
るようにしている。上記シーケンサー27と連動するよう
にしたコンピューター26には、サーボドライバー29を介
して荷重負荷装置18のサーボモーター23を電気接続し、
所定の加圧速度でサーボモーター23を駆動自在として抗
折棒14を昇降自在とし、荷重検出器20で検出した抗折棒
14の負荷荷重および変位計で検出した試料片５の変位を
変換器30を介してコンピューター26に送信し、フロッピ
ーディスクの記憶媒体31に適宜に記録できるようにして
いる。The sample furnace 1 formed as described above can be automatically controlled by a computer 26 such as a personal computer as shown in FIG. The sequencer 27 connected to the computer 26 controls the transfer device 12 according to the program settings.
Is controlled so that the sample piece 5 is detected by the sample piece detector 15 in the bending section and the sample piece 5 is sequentially fed to the bending section. Further, the computer 26 and the test furnace 1 can be controlled to a predetermined temperature state via the temperature controller 28. The computer 26 that is linked to the sequencer 27 is electrically connected to the servo motor 23 of the load device 18 via a servo driver 29,
The servo rod 23 can be driven freely at a predetermined pressurizing speed and the bending bar 14 can be moved up and down, and the bending bar detected by the load detector 20
The load of 14 and the displacement of the sample 5 detected by the displacement meter are transmitted to the computer 26 via the converter 30 so that they can be appropriately recorded on the storage medium 31 of the floppy disk.
上記のように荷重負荷装置18、移送装置12、温度コン
トローラー28等を自動制御するようにしたコンピュータ
ー26は、図のようにキーボード32で試料片５の番号、品
名、寸法、強度データー等を入力自在とし、CRT32を介
して出力自在とし、試料片５の曲げ強度や変位量等を換
算処理してプリンター34に適宜に出力できるようにして
いる。As described above, the computer 26 automatically controls the load device 18, the transfer device 12, the temperature controller 28, etc., and inputs the number, the product name, the dimensions, the strength data, etc. of the sample 5 using the keyboard 32 as shown in the figure. It can be freely output through the CRT 32 so that the bending strength and displacement of the sample piece 5 can be converted and output to the printer 34 as appropriate.
このように構成の試験炉にあっては、レールに試料片
を整列して送り込むため従来の架台搬送式のものに比べ
て炉容積が４分の１以下となり、消費電力量も従来の２
分の１以下となった。また、不活性ガス吹き込み管を介
してN2ガスを30/minの吹き込みで、炉内のO2濃度を0.
1％以下に雰囲気調整をすることができたものである。In the test furnace having such a configuration, since the test pieces are aligned and fed to the rails, the furnace volume is less than one-fourth of that of the conventional pedestal transfer type, and the power consumption is less than that of the conventional one.
It was less than 1/10. Further, the O 2 concentration in the furnace was reduced to 0 by blowing N 2 gas at 30 / min through an inert gas blowing pipe.
The atmosphere could be adjusted to 1% or less.
また、上記したようなパーソナルコンピューターによ
って試料炉を自動運転することができて連続無人運転が
可能となり、夜間においても試料片を試験処理できるも
のである。Further, the sample furnace can be automatically operated by the personal computer as described above, thereby enabling continuous unmanned operation, and the test piece can be subjected to test processing even at night.
特に、本実施例では、レールに試料片を搭載して移送
するため、試料片と炉床との接触面積を小さくできて移
送装置を小出力のものとでき、さらにレールの両側にガ
イドを設けているので、試料片に寸法誤差等があって
も、ガイドにそって試料片を強度試験機に確実に送れて
試験できるものである。In particular, in the present embodiment, the sample piece is mounted on the rail and transferred, so that the contact area between the sample piece and the hearth can be reduced, the transfer device can have a small output, and guides are provided on both sides of the rail. Therefore, even if there is a dimensional error or the like in the sample piece, the sample piece can be reliably sent to the strength tester along the guide to be tested.
またさらに、炉蓋を試験炉から持ち上げて取りはずせ
るので、炉内の点検および補修が容易にできて便利なも
のである。Further, since the furnace lid can be lifted up and removed from the test furnace, inspection and repair of the furnace can be easily performed, which is convenient.
なお、試料片としては、上記の耐火煉瓦の他に断熱煉
瓦、キャスタブル耐火物、セラミックス、鉄鋼材、プラ
スチックや複合樹脂材等が適用できるものである。In addition, as a sample piece, in addition to the above-mentioned refractory brick, a heat insulating brick, a castable refractory, ceramics, a steel material, a plastic, a composite resin material, or the like can be applied.
発明の効果 以上のように本発明にあっては、試験片をスペーサー
を介挿してレールに搭載すると、試験片がレールの両側
端に突設したガイド間で案内されて試料片が蛇行せずに
強度試験機に送り込まれる。そのため、試料片に多少の
寸法誤差等があっても、ガイドにそって強度試験機に安
定して送り込めるものである。また、試料片をスペーサ
ーを介挿して移送するにもかかわらず、スペーサーが試
料片の抗折の邪魔にならずに試験することができる。ま
た、炉壁上面の炉蓋を容易に開けられて、炉内の点検お
よび補修が容易にできるものである。そして、小容量の
試験炉内を容易にO2濃度が0.1％以下の雰囲気にするこ
とができ、正確な熱間強度試験を行うことができる。さ
らに、コンピューターで移送装置、強度試験機、温度コ
ントローラーを自動制御でき、耐火煉瓦、セラミックス
等の試験片を自動的に熱間強度試験できて、自動的に強
度データを採取でき、試験炉を連続無人運転できるもの
である。Effect of the Invention As described above, in the present invention, when a test piece is mounted on a rail with a spacer interposed, the test piece is guided between guides projecting from both side ends of the rail, and the sample piece does not meander. Is sent to the strength tester. Therefore, even if there is some dimensional error or the like in the sample piece, it can be stably sent to the strength tester along the guide. In addition, the test can be performed without disturbing the bending of the sample piece even though the sample piece is transferred through the spacer. Further, the furnace lid on the upper surface of the furnace wall can be easily opened, and inspection and repair of the inside of the furnace can be easily performed. Further, the atmosphere inside the test furnace having a small capacity can be easily made to have an O 2 concentration of 0.1% or less, and an accurate hot strength test can be performed. In addition, a computer can automatically control the transfer device, strength tester, and temperature controller, automatically test the strength of test pieces such as refractory bricks and ceramics, automatically collect strength data, and connect the test furnace continuously. It can drive unmanned.
第１図は本発明の一実施例の一部省略した側断面図、第
２図は第１図の矢視Ａ−Ａの断面図、第３図は同上の制
御ブロック図である。 １……試験炉、５……試料片、６……強度試験機、７…
…炉床、９……レール、12……移送装置。FIG. 1 is a side sectional view, partially omitted, of an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is a control block diagram of the same. 1 ... test furnace, 5 ... sample, 6 ... strength tester, 7 ...
... hearth, 9 ... rail, 12 ... transfer device.
フロントページの続き (72)発明者 川上 辰男 兵庫県赤穂市中広字東沖1576番地の２ 川崎炉材株式会社内 (56)参考文献 特開 昭61−124847（ＪＰ，Ａ) 特開 昭57−175939（ＪＰ，Ａ) 実開 昭49−68487（ＪＰ，Ｕ)Continuation of front page (72) Inventor Tatsuo Kawakami 2 1576, Higashi-oki, Nakahiro-ji, Ako-shi, Hyogo Kawasaki Furnace Materials Co., Ltd. (56) References JP-A-61-124847 (JP, A) JP-A-57 -175939 (JP, A) Actually open 49-68487 (JP, U)
Claims (1)
炉に送給して強度試験機で熱間強度試験を行う熱間強度
試験装置において、両側端にガイドを所定高さに突設し
た試料片摺動用のレール床材を試験炉の炉床に敷設する
とともに、この上に突設したレールに試料片をその両側
を上記両側端のガイド間に嵌装し、その試料片の前後間
に試料片の抗折の邪魔にならないように中央部を凹設し
たスペーサーを介挿して試料片を一定ピッチで整列して
強度試験機に一定ピッチですべらせて送り込み自在に移
送装置を配設し、上記炉壁の上面に炉蓋を開閉可能に嵌
装して、上記送り込む試料片を温度コントローラーを介
して所要の温度に加熱して試験可能な程度の小容量に試
験炉を形成するとともに、上記小容量の試験炉に不活性
ガス吹き込み管を配設して不活性ガスを吹き込んで炉内
のO2濃度を0.1％以下の雰囲気に調整可能とし、上記し
た移送装置、強度試験機、温度コントローラーを自動制
御するようにコンピューターを配設し、試験する試験片
の曲げ強度、変位を出力自在として試験炉を連続無人運
転できるようにしたことを特徴とする熱間強度試験装
置。1. A hot-strength test apparatus in which test pieces such as refractory bricks and ceramics are fed to a test furnace and subjected to a hot-strength test with a strength-testing machine. A rail floor material for sliding the sample piece is laid on the hearth of the test furnace, and the sample piece is fitted on the rail protruding from this on both sides between the guides on both side ends. The specimen is aligned at a constant pitch by inserting a spacer with a concave central part so that it does not interfere with the bending of the specimen, and the transfer device is arranged so that it can be sent to the strength tester at a constant pitch and sent freely. A furnace lid is openably and closably fitted on the upper surface of the furnace wall, and the sample piece to be fed is heated to a required temperature via a temperature controller to form a test furnace with a small capacity such that the test can be performed. Inert gas injection pipe into the small capacity test furnace Set to be adjustable in the O 2 concentration below 0.1% atmosphere in the furnace by blowing the inert gas, the transfer device described above, strength tester, and arranged computer to automatically control the temperature controller, the test A hot-strength test apparatus characterized in that the bending strength and displacement of a test piece to be tested can be freely output so that the test furnace can be operated continuously and unattended.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63101007A JP2649056B2 (en) | 1988-04-22 | 1988-04-22 | Hot strength test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63101007A JP2649056B2 (en) | 1988-04-22 | 1988-04-22 | Hot strength test equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01270638A JPH01270638A (en) | 1989-10-27 |
| JP2649056B2 true JP2649056B2 (en) | 1997-09-03 |
Family
ID=14289187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63101007A Expired - Lifetime JP2649056B2 (en) | 1988-04-22 | 1988-04-22 | Hot strength test equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2649056B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100946740B1 (en) * | 2009-11-10 | 2010-04-01 | 한국건설기술연구원 | Apparatus for testing structural strength of middle and long span structures in a heating furnace |
| CN113702203A (en) * | 2021-08-04 | 2021-11-26 | 长安大学 | Method for evaluating high-temperature performance of asphalt mixture |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4968487U (en) * | 1972-09-26 | 1974-06-14 | ||
| JPS57175939A (en) * | 1981-04-24 | 1982-10-29 | Nippon Kokan Kk <Nkk> | Hot strength measurement in reducing atmosphere |
| JPS6039529A (en) * | 1983-08-12 | 1985-03-01 | Shimadzu Corp | High-temperature continuous material testing device |
| JPS61124847A (en) * | 1984-11-22 | 1986-06-12 | Hitachi Ltd | Continuous high temperature strength testing machine |
-
1988
- 1988-04-22 JP JP63101007A patent/JP2649056B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01270638A (en) | 1989-10-27 |
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