JPS62185129A - Light receiving device for measuring temperature - Google Patents
Light receiving device for measuring temperatureInfo
- Publication number
- JPS62185129A JPS62185129A JP2727986A JP2727986A JPS62185129A JP S62185129 A JPS62185129 A JP S62185129A JP 2727986 A JP2727986 A JP 2727986A JP 2727986 A JP2727986 A JP 2727986A JP S62185129 A JPS62185129 A JP S62185129A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- temperature
- tip
- receiving device
- light receiving
- 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
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 abstract description 12
- 238000009529 body temperature measurement Methods 0.000 abstract description 8
- 230000003287 optical effect Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 239000013307 optical fiber Substances 0.000 abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002893 slag Substances 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000007711 solidification Methods 0.000 description 7
- 230000008023 solidification Effects 0.000 description 7
- 239000013078 crystal Substances 0.000 description 6
- 230000005496 eutectics Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
Landscapes
- Radiation Pyrometers (AREA)
Abstract
Description
【発明の詳細な説明】
溶解しているものが凝固する場合には、凝固開始点（初
品点または初晶温度）と凝固終了点（Ｊ１２品点または
共晶凝固温度）があり、鋳鉄においては、その化学組成
によって凝固開始点や凝固終了点が異なっている。Detailed Description of the Invention When a molten substance solidifies, there is a solidification start point (initial point or primary crystal temperature) and a solidification end point (J12 point or eutectic solidification temperature). The solidification start point and solidification end point differ depending on their chemical composition.
すなわち、第３図に鋳鉄の冷却曲線の一例を示すように
、温度ａの溶湯が凝固する場合、初晶温度すにおいて凝
固が始まり、その初晶温度すがしばらく持続し、しかる
のち、共晶凝固温度ｄで凝固するのであるが、初晶から
共晶までの間に、温度Ｃに至る過冷却の現象を生じる。In other words, as shown in Fig. 3, which shows an example of the cooling curve of cast iron, when molten metal at temperature a solidifies, solidification begins at the primary crystal temperature, which lasts for a while, and then becomes eutectic. It solidifies at the solidification temperature d, but a phenomenon of supercooling that reaches the temperature C occurs between the primary crystal and the eutectic crystal.
そして、初晶温度すより鋳鉄の炭素当量を知ることがで
き、初品から共晶までの温度差ｇより溶湯の炭素の比率
がわかり、また、過冷却の程度によりチルの度合を知る
ことができ、これらのことが、冷却曲線に対する基本的
な考え方として従来より知られている。The carbon equivalent of cast iron can be determined from the primary crystal temperature, the carbon ratio of the molten metal can be determined from the temperature difference g from the initial crystal to the eutectic, and the degree of chill can be determined from the degree of supercooling. This has been known as the basic concept regarding the cooling curve.
このような冷却曲線の変曲点を検出するために従来より
第２図に示すような測温用サンプラが用いられている。In order to detect such an inflection point of a cooling curve, a temperature measuring sampler as shown in FIG. 2 has conventionally been used.
従来の測温用サンプ、うは、先端部に湯溜め２を設け、
この・７ｖＪｌｌ’ｆｆめ２の直り側部に窓３を有する
１耐熱材料で作ったパイプｌと、窓３内に設けられた第
１の熱電対１１と、湯溜め２内に設けられた第２の熱電
対１２とから構成されている。A conventional temperature measurement sump, with a water reservoir 2 at the tip,
A pipe l made of a heat-resistant material having a window 3 on the straight side of the pipe 2, a first thermocouple 11 provided in the window 3, and a first thermocouple 11 provided in the hot water reservoir 2. 2 thermocouples 12.
測温時に、測温用サンプラを溶融金属の中へ挿込むと窓
３より溶融金属が流入するので、このとき、第１の熱電
対１１によって溶融金属の温度を測定することができ、
測温用サンプラを溶融金属より引」二げると湯溜め２に
溶融金属を採取することができる。During temperature measurement, when the temperature measurement sampler is inserted into the molten metal, the molten metal flows in through the window 3, so at this time, the temperature of the molten metal can be measured by the first thermocouple 11,
When the temperature measuring sampler is pulled out from the molten metal, the molten metal can be collected in the sump 2.
このようにして採取した溶融金属の冷却曲線は第２の熱
゛重列１２によって得ることができる。The cooling curve of the molten metal sampled in this way can be obtained by the second thermal overlay 12.
しかし、このような従来の測温用サンプラは、１回しか
使用できないのにもかかわらず、２つの熱電対１１．１
２を用いており、また、製造に際してリード１Ｊ１３の
耐熱保護を必要とするなどの多くの工程を経なければな
らないので高価なものであった。However, although such conventional temperature samplers can only be used once, they only have two thermocouples (11.1).
In addition, the lead 1J13 required heat-resistant protection during manufacture, and many steps had to be carried out, making it expensive.
そこで、この発明は、このような従来のｉ！Ｉ−湿田サ
ンプラが有する問題点を解決するために考えられたもの
であって、溶融金属の温度および採取した溶融金属の温
度変化を、熱電対を用いることなく光学的に測定するよ
うに構成したものであるから、 １１１１１温ごとに消
耗される部分の費用を低減することができる。Therefore, the present invention is applicable to such conventional i! I-It was designed to solve the problems of the wet field sampler, and was configured to optically measure the temperature of the molten metal and the temperature change of the sampled molten metal without using a thermocouple. Since it is a 11111 temperature unit, the cost of parts that are consumed every 11111 temperatures can be reduced.
この発明の１１１１１温田受光具は、第１図に示すよう
に、パイプ１の先端に設けられた溶融金属を汲取る湯溜
め２と、この湯溜めｚ内に溶融金属を流入させる窓３と
、この窓３を仮に覆うアルミのカバー７と、硅；（一杯
のような耐熱透明光導体棒５を貫通せしめた若４とを具
備し、この光導体棒５の先端部は、勘溜めｚ内に突出し
ており、後端はバイブｌ内に指向しており、さらに、光
導体棒５の側面は炭化硅素、窒化硅素のような黒色耐火
物の層６で覆われている。As shown in FIG. 1, the 11111 Onta light receiving device of the present invention includes a sump 2 provided at the tip of a pipe 1 for sucking up molten metal, and a window 3 for allowing the molten metal to flow into the sump z. The window 3 is provided with an aluminum cover 7 that temporarily covers the window 3, and a cover 4 through which a heat-resistant transparent light conductor rod 5 is passed through. The light guide rod 5 protrudes into the vibrator 1 with its rear end pointing into the vibrator 1, and the sides of the light guide rod 5 are covered with a layer 6 of a black refractory material, such as silicon carbide or silicon nitride.
そして、バイブ１の内面および４４の内面は黒色に着色
されており、各内面における入射光線の反射や吸収に分
光特性を付ｐしないように構成されている。The inner surface of the vibrator 1 and the inner surface of the vibrator 44 are colored black, and are configured so as not to impart spectral characteristics to the reflection or absorption of incident light on each inner surface.
このように構成された測温用受光具は、その後端に、光
学縁！ｌＩ９の先端部が挿通された挿入棒８が挿込まれ
るものであって、この光学繊維９の先端は、光導体棒５
に指向しており、後端は、２色部度工１のような光学的
温度計ｌＯの受光部に指向している。The light receiving device for temperature measurement configured in this way has an optical edge at the rear end! The insertion rod 8 into which the tip of the optical fiber 9 is inserted is inserted, and the tip of the optical fiber 9 is inserted into the light guide rod 5.
The rear end is oriented toward the light receiving part of an optical thermometer 10 such as the two-color section 1.
溶融金属の温度測定を行ない、その冷却曲線を得て溶融
金属を採取したい場合には、挿入棒８を測温用受光具に
挿込んで、溶融金属の中に突っ込むと、溶融金属の表面
に浮んでいるスラグを通過した後、溶融金属の中に先端
部が到達すると、アルミのカバー７が溶けて破れ、溶融
金属が孔３から湯溜めｚ内へ流入する。If you want to measure the temperature of molten metal, obtain its cooling curve, and collect the molten metal, insert the insertion rod 8 into the temperature measuring light receiver and plunge it into the molten metal. When the tip reaches the molten metal after passing through the floating slag, the aluminum cover 7 is melted and torn, and the molten metal flows into the sump z through the hole 3.
この流入した溶融金属から輻射されるエネルギーの一部
は、光導体棒５の先端から入射し、バイブ１の１セおよ
び光学縁ｍ９を経て光学的温度計１０へ導かれ、光学的
に測温される。A part of the energy radiated from the inflowing molten metal enters from the tip of the light guide rod 5, and is guided to the optical thermometer 10 through the first section of the vibrator 1 and the optical rim m9, and optically measures the temperature. be done.
測温用受光具を溶融金属の中から引上げると、湯溜め２
の中に溶融金属を汲取ることができ、汲取られた溶融金
属の冷却過程における温度変化、すなわち、冷却曲線を
、光学的温度計ｌＯにおいて得ることができる。When the temperature sensor is pulled up from the molten metal, the water tank 2
The molten metal can be pumped into the molten metal, and the temperature change during the cooling process of the molten metal, that is, the cooling curve, can be obtained with an optical thermometer IO.
以上で説明したように、この発明の測温用受光具による
と、測温用サンプラに高価な貴金属よりなる熱電対を使
用しておらず、また、組立工程も簡素化されるので廉価
であり、消耗部分に要する費用が少ないから、溶融金属
の温度測定および冷却曲線を得るための費用を大幅に減
らすことができる。As explained above, the temperature measurement light receiving device of the present invention does not use an expensive thermocouple made of precious metal in the temperature measurement sampler, and the assembly process is simplified, so it is inexpensive. , the cost of temperature measurements and cooling curves of molten metal can be significantly reduced due to the low cost of consumable parts.
第１図は、この発明の測温用受光几の一実施例を示す縦
断面図、第２図は、従来の装置を示す縦断面図、第３図
は、溶融している鋳鉄が凝固する過程における温度変化
を示す冷却曲線図である。
ｌ・・・パイプ
２・・・湯溜め
３・・・孔
４・・・蓋
５・・・透明光導体棒
９・・・光学繊維
ｌＯ・・・光学的温度計Fig. 1 is a vertical cross-sectional view showing an embodiment of the temperature measuring light receiving box of the present invention, Fig. 2 is a longitudinal cross-sectional view showing a conventional device, and Fig. 3 is a vertical cross-sectional view showing an embodiment of the temperature measuring light receiving box of the present invention. It is a cooling curve diagram showing temperature changes in the process. l... Pipe 2... Water reservoir 3... Hole 4... Lid 5... Transparent light guide rod 9... Optical fiber lO... Optical thermometer
Claims (1)
、該支持パイプの先端近傍に設けられ、耐熱透明光導体
棒を貫通せしめた蓋とを具備し、上記耐熱透明光導体棒
の先端部を上記湯溜め内に突出せしめたことを特徴とす
る溶融金属の温度を光学的の測定するための測温用受光
具。A support pipe that supports a sump for pumping molten metal at its tip, and a lid that is provided near the tip of the support pipe and allows a heat-resistant transparent light guide rod to pass through, the tip of the heat-resistant transparent light guide rod. A temperature-measuring light-receiving device for optically measuring the temperature of molten metal, characterized in that a temperature-measuring light-receiving device is made to protrude into the water reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2727986A JPS62185129A (en) | 1986-02-10 | 1986-02-10 | Light receiving device for measuring temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2727986A JPS62185129A (en) | 1986-02-10 | 1986-02-10 | Light receiving device for measuring temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62185129A true JPS62185129A (en) | 1987-08-13 |
Family
ID=12216632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2727986A Pending JPS62185129A (en) | 1986-02-10 | 1986-02-10 | Light receiving device for measuring temperature |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62185129A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05142049A (en) * | 1991-11-15 | 1993-06-08 | Nkk Corp | Consumable type optical fiber thermometer |
| US6004031A (en) * | 1993-11-30 | 1999-12-21 | Nkk Corporation | Temperature measuring device |
| DE10331124B3 (en) * | 2003-07-09 | 2005-02-17 | Heraeus Electro-Nite International N.V. | Method and device for measuring the cooling curve of melt samples and / or the heating curve of melt samples and their use |
-
1986
- 1986-02-10 JP JP2727986A patent/JPS62185129A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05142049A (en) * | 1991-11-15 | 1993-06-08 | Nkk Corp | Consumable type optical fiber thermometer |
| US6004031A (en) * | 1993-11-30 | 1999-12-21 | Nkk Corporation | Temperature measuring device |
| US6227702B1 (en) | 1993-11-30 | 2001-05-08 | Nkk Corporation | Method and apparatus for measuring a temperature of a molten metal |
| DE10331124B3 (en) * | 2003-07-09 | 2005-02-17 | Heraeus Electro-Nite International N.V. | Method and device for measuring the cooling curve of melt samples and / or the heating curve of melt samples and their use |
| US7384192B2 (en) | 2003-07-09 | 2008-06-10 | Heraeus Electro-Nite International N.V. | Method for measuring cooling/heating curves of molten masses |
| US7635220B2 (en) | 2003-07-09 | 2009-12-22 | Heraeus Electro-Nite International N.V. | Device for measuring cooling/heating curves of molten masses |
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