JPH04279849A - Measurement of coefficient of linear expansion and device therefor - Google Patents
Measurement of coefficient of linear expansion and device thereforInfo
- Publication number
- JPH04279849A JPH04279849A JP2674891A JP2674891A JPH04279849A JP H04279849 A JPH04279849 A JP H04279849A JP 2674891 A JP2674891 A JP 2674891A JP 2674891 A JP2674891 A JP 2674891A JP H04279849 A JPH04279849 A JP H04279849A
- Authority
- JP
- Japan
- Prior art keywords
- measured
- temperature
- insulating material
- heat insulating
- linear expansion
- 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.)
- Pending
Links
- 238000005259 measurement Methods 0.000 title abstract description 16
- 239000011810 insulating material Substances 0.000 claims abstract description 35
- 238000001514 detection method Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 abstract 3
- 230000000630 rising effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910001374 Invar Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、高靭性で低線膨脹係数
を有するインバー線等の条材の線膨脹係数測定に好適な
線膨脹係数測定方法及びその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 linear expansion coefficient measuring method and apparatus suitable for measuring the linear expansion coefficient of a strip material such as an Invar wire having high toughness and a low linear expansion coefficient.
【０００２】0002
【従来の技術】線膨脹係数は、従来、被測定物を昇温装
置内にセツトして加熱、保温し、昇温装置内の前記被測
定物を温度検出器及び長さ検出器により計測して、その
被測定物の元の長さ、温度変化及び長さ変化の各計測値
に基づき線膨脹係数を求める測定法になつており、その
測定精度を高めるために各種の温度及び長さの検出器等
が開発され提案されている。[Prior Art] Conventionally, the coefficient of linear expansion has been measured by placing an object to be measured in a heating device, heating and keeping it warm, and measuring the object in the heating device using a temperature detector and a length detector. This is a measurement method that calculates the linear expansion coefficient based on the measured values of the original length, temperature change, and length change of the object to be measured.In order to improve the measurement accuracy, various temperature and length measurements are used to Detectors and the like have been developed and proposed.
【０００３】前記昇温装置には均一加熱炉、集光式加熱
炉等が、温度検出器には測温抵抗体（白金等を使用）や
各種の熱電対等が用いられており、特に、前記長さの計
測は、微小変位の検出技術を必要とし、被測定物をいか
に保持してその変位を正確に検出するかが課題となり、
保温槽内に被測定物と比較参照用の押し棒（低膨脹材料
−石英等）を入れて温度変化に伴う相互寸法の変化を炉
外の伸び計で計測する押し棒式測定法や、２台の測微望
遠鏡により被測定物の端部間の寸法変化を外部から追跡
して計測するコンパレータ法等が採用されているが、前
者は押し棒の寸法変化を補正する必要があり、後者は検
出精度が被測定物の形状に依存されるなど、計測精度の
確保が難しく機構が著しく複雑となりコスト高になつて
いる。[0003] The temperature raising device uses a uniform heating furnace, a condensing heating furnace, etc., and the temperature detector uses a resistance temperature detector (using platinum or the like), various thermocouples, etc. Measuring length requires detection technology for minute displacements, and the challenge is how to hold the object to be measured and accurately detect its displacement.
The push rod measurement method involves placing the object to be measured and a reference push rod (low expansion material - quartz, etc.) in a heat insulating tank and measuring changes in mutual dimensions due to temperature changes using an extensometer outside the furnace; Comparator methods have been adopted in which dimensional changes between the ends of the object to be measured are externally tracked and measured using a microscopic telescope, but the former requires correction for dimensional changes in the push rod, while the latter Detection accuracy depends on the shape of the object to be measured, making it difficult to ensure measurement accuracy, making the mechanism extremely complex and increasing costs.
【０００４】0004
【発明が解決しようとする課題】従来の線膨脹係数の測
定は、前記のように被測定物を加熱して保温する昇温装
置内でその被測定物が計測されるため、加熱機構の熱影
響等による昇温装置内の温度差によつて、昇温装置の内
部、被測定物の温度分布の均等化に困難を伴い、計測誤
差の原因になるとともに、被測定物の長さ制限（短く）
や前記温度分布の均等化のための計測時間の制限等によ
り、計測精度の向上に自から限界があるなどの問題点が
ある。[Problem to be Solved by the Invention] In the conventional measurement of the coefficient of linear expansion, the measured object is measured in a heating device that heats the measured object and keeps it warm. Due to temperature differences within the heating device due to such factors, it is difficult to equalize the temperature distribution inside the heating device and the object to be measured, causing measurement errors and limiting the length of the object to be measured ( short)
There are problems in that there is a limit to the improvement of measurement accuracy due to limitations on measurement time for equalizing the temperature distribution, etc.
【０００５】本発明は、上記のような課題に対処するた
めに開発されたものであつて、その目的とする処は、昇
温装置による熱影響をなくし、被測定物の長尺化ととも
に、その温度分布を均等化し温度変化を緩速化して、温
度及び長さの検出精度を高めた線膨脹係数測定方法及び
その装置を提供するにある。The present invention was developed in order to solve the above-mentioned problems, and its purpose is to eliminate the thermal influence caused by the heating device, and to increase the length of the object to be measured. It is an object of the present invention to provide a linear expansion coefficient measuring method and an apparatus therefor, which equalizes the temperature distribution and slows down the temperature change, thereby increasing the accuracy of temperature and length detection.
【０００６】[0006]
【課題を解決するための手段】本発明は、筒状の保温材
中に昇温された被測定物を遊挿して伸縮自在にセットし
、前記被測定物の温度を前記保温材内で直接に検出する
とともに、前記被測定物の長さを検出して、前記被測定
物の前記温度及び長さの検出信号に基づき線膨脹係数を
測定する測定方法とし、また、昇温された被測定物を遊
挿して伸縮自在にセツトする筒状の保温材と、同保温材
とともに前記被測定物を支持する架台と、前記保温材内
に挿入されて前記被測定物の中央部付近に配置される温
前記被測定物の端部に配置された長さ検出器と、前記温
度検出器と長さ検出器に連設された線度検出器と、膨脹
係数の自動データ処理機を具備した測定装置により、保
温装置による熱影響をなくし、被測定物の長尺化ととも
に、その温度分布を均等化し温度変化を緩速化して、計
測、測定精度を高めている。[Means for Solving the Problems] The present invention has a method in which a heated object to be measured is loosely inserted into a cylindrical heat insulating material and set to be expandable and retractable, and the temperature of the object to be measured is directly controlled within the heat insulating material. and detecting the length of the object to be measured, and measuring the coefficient of linear expansion based on the detection signal of the temperature and length of the object to be measured; A cylindrical heat insulating material into which an object is loosely inserted and set in an expandable manner, a pedestal supporting the object to be measured together with the insulating material, and a pedestal which is inserted into the insulating material and placed near the center of the object to be measured. A length detector placed at the end of the object to be measured, a linearity detector connected to the temperature detector and the length detector, and an automatic data processor for expansion coefficient. The device eliminates the thermal effect caused by the heat retention device, and as the object to be measured becomes longer, it equalizes the temperature distribution and slows down temperature changes, increasing measurement accuracy.
【０００７】また、前記保温材を嵌装して支持するセツ
ト用パイプを具備したことにより、被測定物の温度分布
の均等化及び温度変化の緩速化をさらに高めている。Furthermore, by providing a setting pipe into which the heat insulating material is fitted and supported, it is possible to further equalize the temperature distribution of the object to be measured and to slow down the temperature change.
【０００８】[0008]
【作 用】別装置によつて昇温された被測定物は、筒
状の保温材中に遊挿されて伸縮自在にセットされ、長尺
化されて長さ変化の計測数値が大きく確保されるととも
に、熱発散が防止され被測定物の温度分布が均等化、温
度低下が著しく緩速化されて、温度検出器により被測定
物の温度が前記保温材内で直接に高精度で検出され、長
さ検出器により被測定物の温度が高精度で検出されて、
被測定物の長さ検出、前記温度及び長さの検出信号に基
づき線膨脹係数が高精度で測定される。[Operation] The object to be measured is heated by a separate device, and is loosely inserted into a cylindrical heat insulating material and set so as to be expandable and retractable, making it long and ensuring a large measurement value for length change. At the same time, heat dissipation is prevented, the temperature distribution of the object to be measured is equalized, the temperature drop is significantly slowed down, and the temperature of the object to be measured is directly detected with high precision within the heat insulating material by the temperature detector. , the temperature of the object to be measured is detected with high precision by the length detector,
The length of the object to be measured is detected, and the linear expansion coefficient is measured with high accuracy based on the temperature and length detection signals.
【０００９】また、セツト用パイプに保温材とともに被
測定物を嵌装してセツトし、前記熱発散の防止、温度分
布の均等化、温度低下の緩速化等をさらに高めている。[0009] Furthermore, the object to be measured is fitted and set together with a heat insulating material in the setting pipe to further improve prevention of heat dissipation, equalization of temperature distribution, slowing down of temperature drop, etc.
【００１０】0010
【実施例】図１ないし図３に本発明の一実施例を示し、
図中ａは被測定物、１は筒状の保温材、２はセツト用パ
イプ、３は架台、４は温度検出器、５は長さ検出器、６
は自動データ処理機であつて、筒状の保温材１中に昇温
された被測定物ａを遊挿して伸縮自在にセットし、被測
定物ａの温度を保温材１内で直接に検出するとともに、
被測定物ａの長さを検出して、被測定物ａの前記温度及
び長さの検出信号４ａ，５ａ に基づき線膨脹係数を測
定する線膨脹係数測定方法になつている。[Embodiment] An embodiment of the present invention is shown in FIGS. 1 to 3,
In the figure, a is the object to be measured, 1 is a cylindrical heat insulating material, 2 is a setting pipe, 3 is a stand, 4 is a temperature detector, 5 is a length detector, 6
is an automatic data processing machine, in which a heated object a is loosely inserted into a cylindrical heat insulating material 1, set to be expandable and retractable, and the temperature of the measured object a is directly detected within the heat insulating material 1. At the same time,
The linear expansion coefficient measuring method is such that the length of the object to be measured a is detected and the linear expansion coefficient is measured based on the temperature and length detection signals 4a and 5a of the object to be measured a.
【００１１】また、昇温された被測定物ａを遊挿して伸
縮自在にセツトする筒状の保温材１と、保温材１ととも
に被測定物ａを支持する架台３と、保温材１内に挿入さ
れて被測定物ａの中央部付近に配置される温度検出器４
と、被測定物ａの端部に配置された長さ検出器５と、温
度検出器４と長さ検出器５に連設された線膨脹係数の自
動データ処理機６を具備した線膨脹係数測定装置になつ
ている。Further, a cylindrical heat insulating material 1 into which the heated object to be measured a is loosely inserted and set in a telescopic manner, a pedestal 3 which supports the measured object a together with the insulating material 1, and a Temperature detector 4 inserted and placed near the center of the object to be measured a
, a length detector 5 disposed at the end of the object to be measured a, and a linear expansion coefficient automatic data processor 6 connected to the temperature detector 4 and the length detector 5. It has become a measuring device.
【００１２】さらに、上記線膨脹係数測定装置において
、保温材１を嵌装して支持するセツト用パイプ２を具備
したことを特徴とする線膨脹係数測定装置になつている
。Furthermore, the linear expansion coefficient measuring apparatus described above is characterized in that it includes a setting pipe 2 into which the heat insulating material 1 is fitted and supported.
【００１３】さらに詳述すると、保温材１は、耐熱性（
４００ 度）、保温性、含油性（４０〜７０％）を有す
る不織布等で形成され、図２に示すように断面半円形に
分断され、被測定物ａの線径、長さに対応して形成され
て（必要に応じて外周面に適宜の補強層が形成される）
、被測定物ａの遊挿、取出等が容易になつており、その
内面には中央部に達する温度検出器４及びそのリード線
４ｂ用の溝１１が設けられている。More specifically, the heat insulating material 1 has heat resistance (
It is made of non-woven fabric etc. that has heat retention properties (400 degrees to 70%), oil-retention properties (40 to 70%), and is divided into semicircular cross sections as shown in Fig. 2, corresponding to the wire diameter and length of the object to be measured. formed (an appropriate reinforcing layer is formed on the outer peripheral surface as necessary)
The object to be measured (a) can be inserted and removed easily, and a groove 11 for the temperature sensor 4 and its lead wire 4b reaching the center is provided on the inner surface.
【００１４】セツト用パイプ２は、保温材１とともに被
測定物ａを嵌装して架台３の支持板１２，１２ 上にセ
ツトして支持する。架台３は、ステンレス、アルミニウ
ム等の金属、硬質合成樹脂製とし、セツト用パイプ２、
保温材１、被測定物ａを支持する支持板１２，１２ 、
被測定物ａの一端部の支持部１３を有し、長さ検出器５
が配設されるThe setting pipe 2 is fitted with the heat insulating material 1 and the object to be measured a, and is set and supported on the support plates 12, 12 of the mount 3. The frame 3 is made of metal such as stainless steel or aluminum, or hard synthetic resin, and the setting pipe 2,
A heat insulating material 1, support plates 12, 12 that support the object to be measured a,
It has a support part 13 at one end of the object to be measured a, and a length detector 5
will be placed
【００１５】温度検出器４は、各種の熱伝
対等が用いられ、図１に示すように溝１１内に配置され
て被測定物ａの中央部に温度検出器４が密着されて直接
に温度を検出する。The temperature sensor 4 is made of various types of thermocouples, and as shown in FIG. Detect.
【００１６】長さ検出器５は、図示のように架台３に配
設された支持ケース１５、支持ケース１５にスライド可
能に嵌装されて被測定物ａの他端部に当接される検出部
材１６、検出部材１６付勢用のスプリング、ひずみゲー
ジ等の変位検出素子等からなり、微小変位検出計に構成
されている。また、自動データ処理器６は、温度検出器
４及び長さ検出器５に連設されて、温度検出信号４ａ、
長さ検出信号５ａが入力されるとともに、被測定物ａの
元の長さデータＬが入力され、前記各検出信号、データ
を演算処理して、温度変化をＸ軸に、長さ変化をＹ軸に
出力して、Ｘ−Ｙカーブとして表示し線膨脹係数として
読み取るレコーダが用いられ、その他各種の処理器が適
用可能である。As shown in the figure, the length detector 5 is a support case 15 disposed on the pedestal 3, and a detection device that is slidably fitted into the support case 15 and comes into contact with the other end of the object to be measured a. It consists of a member 16, a spring for biasing the detection member 16, a displacement detection element such as a strain gauge, etc., and is configured as a minute displacement detector. Further, the automatic data processor 6 is connected to the temperature detector 4 and the length detector 5, and receives temperature detection signals 4a,
The length detection signal 5a is inputted, and the original length data L of the object to be measured a is inputted, and each of the detection signals and data is processed, and the temperature change is plotted on the X axis, and the length variation is plotted on the Y axis. A recorder is used that outputs the data to an axis, displays it as an X-Y curve, and reads it as a linear expansion coefficient, and various other processing devices are also applicable.
【００１７】被測定物ａは、程よい熱伸び量が確保され
るように好ましくは ２００ｍｍ程度に長尺化し、図示
省略した油親浸漬加熱等の適宜の昇温装置により ４０
０℃程度まで加熱して、溝１１内に温度検出器４が配置
されている保温材１中に遊挿し、セツト用パイプ２中に
保温材１とともに被測定物ａを嵌装し架台３の支持板１
２上に載置してセツトする。被測定物ａは、架台３と長
さ検出器５間に配置されてその温度及び長さが検出され
自動データ処理器６に線膨脹係数が表示される。The object to be measured a is preferably made long to about 200 mm so as to ensure a suitable amount of thermal elongation, and heated to 40 mm using an appropriate temperature raising device such as oil immersion heating (not shown).
Heat it to about 0°C, loosely insert it into the heat insulating material 1 in which the temperature sensor 4 is placed in the groove 11, fit the object to be measured together with the heat insulating material 1 into the setting pipe 2, and place it on the mount 3. Support plate 1
2 and set it. The object to be measured a is placed between the mount 3 and the length detector 5, its temperature and length are detected, and the linear expansion coefficient is displayed on the automatic data processor 6.
【００１８】保温材１内は被測定物ａでほぼ充満されて
、保温材１の保温性能とあいまつて熱発散が著しく低減
され、被測定物ａの全長にわたつて温度分布が均等化さ
れ、温度低下が著しく緩速化されて、温度検出器４によ
つて被測定物ａの中央部で精度よく温度が検出されると
ともに、長さ検出器５によつて長さが高精度で検出され
て、自動データ処理器６により被測定物ａの線膨脹係数
が表示され、自動的に高精度で測定される。The interior of the heat insulating material 1 is almost filled with the object to be measured a, and together with the heat retention performance of the insulating material 1, heat dissipation is significantly reduced, and the temperature distribution is equalized over the entire length of the object to be measured, The temperature decrease is significantly slowed down, so that the temperature detector 4 can accurately detect the temperature at the center of the object to be measured, and the length detector 5 can detect the length with high accuracy. Then, the automatic data processor 6 displays the linear expansion coefficient of the object to be measured a, and the linear expansion coefficient is automatically measured with high precision.
【００１９】図３は、高靭性で低線膨脹係数のインバー
線（径２．６ 〜６．５ φ）を、長さ２００ｍｍ の
試料（被測定物）として、図示装置により線膨脹係数を
測定した結果を示すその自動データレコーダ６の表示例
であつて、その試料の元の長さＬ＝２２９．２ｍｍ（２
０℃）、被測定物の伸びをｄｌ（ｕｍ）、伸び率をｄｌ
／Ｌ（％）とすると、線膨脹率αは、温度区間２０〜１
００ 及び１００ 〜１９８ において表１のように演
算され、図３及び表１から明らかなように優れた線膨脹
係数の測定精度が得られる。FIG. 3 shows the measurement of the linear expansion coefficient of an Invar wire (diameter 2.6 to 6.5 φ) with high toughness and low coefficient of linear expansion using the illustrated device as a sample (object to be measured) with a length of 200 mm. This is an example of the display of the automatic data recorder 6 showing the results of the analysis, and the original length L of the sample is 229.2 mm (229.2 mm).
0℃), the elongation of the object to be measured is dl (um), and the elongation rate is dl
/L (%), the linear expansion coefficient α is in the temperature range 20 to 1
00 and 100 to 198 as shown in Table 1, and as is clear from FIG. 3 and Table 1, excellent linear expansion coefficient measurement accuracy can be obtained.
【００２０】前記自動データレコーダ６は、図示のＸ−
Ｙカーブの表示とともに、被測定物の元の長さ、温度変
化及び長さ変化等をデータとして線膨脹係数を自動的に
演算、処理して表示する機能を具備するのが望ましい。The automatic data recorder 6 has an X-
In addition to displaying the Y curve, it is desirable to have a function of automatically calculating, processing, and displaying the coefficient of linear expansion using data such as the original length, temperature change, and length change of the object to be measured.
【００２１】[0021]
【表１】[Table 1]
【００２２】[0022]
【発明の効果】本発明は、上述のような構成になつてお
り、別装置により昇温された被測定物は、筒状の保温材
内に遊挿されて伸縮自在にセットされ、被測定物の長尺
化を可能にするとともに、熱発散が防止され温度が均等
化、温度低下が著しく緩速化されて、温度検出器、長さ
検出器によつて被測定物の温度、長さが直接に高精度で
検出され、被測定物の元の長さ計測とともに、前記温度
及び長さの検出信号に基づき線膨脹係数が高精度で測定
され、計測、測定精度、信頼性が向上されているととも
に、機構が大幅に簡素化され低コストで提供されるなど
の利点を有する。[Effects of the Invention] The present invention has the above-described structure, and the object to be measured is heated by a separate device, and is loosely inserted into a cylindrical heat insulating material and set in a telescopic manner. In addition to making it possible to lengthen objects, heat dissipation is prevented, the temperature is equalized, and the temperature drop is significantly slowed down. is directly detected with high precision, and along with measuring the original length of the object to be measured, the coefficient of linear expansion is measured with high precision based on the temperature and length detection signals, improving measurement accuracy and reliability. In addition, it has the advantage that the mechanism is greatly simplified and can be provided at low cost.
【００２３】また、セツト用パイプに保温材とともに被
測定物を嵌装して支持することにより、前記作用効果が
さらに高められる。Furthermore, by fitting and supporting the object to be measured together with the heat insulating material into the setting pipe, the above-mentioned effects can be further enhanced.
【図１】本発明の一実施例を一部断面で示す側視機構図
FIG. 1 is a side view mechanical diagram showing a partial cross section of an embodiment of the present invention.
【図２】図１のＹ−Ｙ断面（Ａ）と保温材の内面（Ｂ）
図[Figure 2] Y-Y cross section (A) in Figure 1 and inner surface of heat insulating material (B)
figure
【図３】線膨脹係数の一測定例図である。FIG. 3 is a diagram showing an example of measurement of linear expansion coefficient.
【符号の説明】 １ 保温材 ２ セツト用パイプ ３ 架台 ４ 温度検出器 ５ 長さ検出器 ６ 自動データ処理器[Explanation of symbols] 1 Heat insulation material 2 Set pipe 3 Mount 4 Temperature detector 5 Length detector 6 Automatic data processor
Claims (3)
を遊挿して伸縮自在にセットし、前記被測定物の温度を
前記保温材内で直接に検出するとともに、前記被測定物
の長さを検出して、前記被測定物の前記温度及び長さの
検出信号に基づき線膨脹係数を測定することを特徴とす
る線膨脹係数測定方法。1. A heated object to be measured is loosely inserted into a cylindrical heat insulating material and set to be expandable and retractable, the temperature of the object to be measured is directly detected within the insulating material, and 1. A linear expansion coefficient measuring method, comprising: detecting the length of an object, and measuring the linear expansion coefficient based on the temperature and length detection signals of the object.
在にセツトする筒状の保温材と、同保温材とともに前記
被測定物を支持する架台と、前記保温材内に挿入されて
前記被測定物の中央部付近に配置される温度検出器と、
前記被測定物の端部に配置された長さ検出器と、前記温
度検出器と長さ検出器に連設された線膨脹係数の自動デ
ータ処理機を具備したことを特徴とする線膨脹係数測定
装置。2. A cylindrical heat insulating material into which a heated object to be measured is loosely inserted and set in a telescopic manner; a pedestal which supports the object to be measured together with the insulating material; a temperature detector placed near the center of the object to be measured;
A linear expansion coefficient characterized by comprising a length detector disposed at the end of the object to be measured, and an automatic linear expansion coefficient data processor connected to the temperature detector and the length detector. measuring device.
て、前記保温材を嵌装して支持するセツト用パイプを具
備したことを特徴とする線膨脹係数測定装置。3. The linear expansion coefficient measuring device according to claim 2, further comprising a setting pipe into which the heat insulating material is fitted and supported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2674891A JPH04279849A (en) | 1991-01-29 | 1991-01-29 | Measurement of coefficient of linear expansion and device therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2674891A JPH04279849A (en) | 1991-01-29 | 1991-01-29 | Measurement of coefficient of linear expansion and device therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04279849A true JPH04279849A (en) | 1992-10-05 |
Family
ID=12201917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2674891A Pending JPH04279849A (en) | 1991-01-29 | 1991-01-29 | Measurement of coefficient of linear expansion and device therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04279849A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269562A (en) * | 2011-05-05 | 2011-12-07 | 上海伟星新型建材有限公司 | Macroscopic pipe linear expansion coefficient tester |
| CN103868947A (en) * | 2014-03-31 | 2014-06-18 | 孙东生 | Measurement method and measurement device for 0-60 DEG C rock linear thermal expansion coefficient |
| CN111595895A (en) * | 2020-04-23 | 2020-08-28 | 河南工业大学 | Measuring device and system for linear expansion coefficient of metal |
-
1991
- 1991-01-29 JP JP2674891A patent/JPH04279849A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269562A (en) * | 2011-05-05 | 2011-12-07 | 上海伟星新型建材有限公司 | Macroscopic pipe linear expansion coefficient tester |
| CN103868947A (en) * | 2014-03-31 | 2014-06-18 | 孙东生 | Measurement method and measurement device for 0-60 DEG C rock linear thermal expansion coefficient |
| CN111595895A (en) * | 2020-04-23 | 2020-08-28 | 河南工业大学 | Measuring device and system for linear expansion coefficient of metal |
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