JPH02275329A - Temperature measuring method for metal strip and temperature measuring roll for metal strip - Google Patents
Temperature measuring method for metal strip and temperature measuring roll for metal stripInfo
- Publication number
- JPH02275329A JPH02275329A JP9541489A JP9541489A JPH02275329A JP H02275329 A JPH02275329 A JP H02275329A JP 9541489 A JP9541489 A JP 9541489A JP 9541489 A JP9541489 A JP 9541489A JP H02275329 A JPH02275329 A JP H02275329A
- Authority
- JP
- Japan
- Prior art keywords
- metal strip
- temperature
- thermocouples
- temperature measuring
- roll
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 title claims abstract description 63
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 4
- 229910052802 copper Inorganic materials 0.000 abstract 4
- 239000010949 copper Substances 0.000 abstract 4
- 239000006185 dispersion Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、金属ストリップの温度を簡単な手段で正−１
に測定することのできる金属ストリップ温度測定方法及
び測温ロールに関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Field of Application> The present invention provides a method for controlling the temperature of a metal strip by a simple means.
The present invention relates to a metal strip temperature measuring method and a temperature measuring roll that can measure the temperature of a metal strip.
〈従来の技術〉
金属ストリップの連続焼鈍炉等においては、所定の材質
特性を得るための熱処理が施される。このような熱処理
においては、金属ストリップの正確な温度を把握するこ
とが大切であり、一般に応答性の速い放射温度計を用い
て非接触で連続測温している。<Prior Art> In a continuous annealing furnace or the like for metal strips, heat treatment is performed to obtain predetermined material properties. In such heat treatment, it is important to know the accurate temperature of the metal strip, and generally a fast-responsive radiation thermometer is used to continuously measure the temperature in a non-contact manner.
一方、放射温度計を用いることが不可能な場所での金属
ストリップの測温には、第５図に示すような、中空ロー
ルの外筒２の内部に熱電対７を埋め込んだ測温ロール５
を金属ストリップ１に接触させ、熱電対７の信号をスリ
ップリング４を介して指示計又は記録計６に出力する測
温ロールシステムを用いることがある０図中３は軸受で
ある。On the other hand, to measure the temperature of a metal strip in places where it is impossible to use a radiation thermometer, a temperature measuring roll 5 with a thermocouple 7 embedded inside the outer cylinder 2 of the hollow roll as shown in FIG.
In some cases, a temperature measuring roll system is used in which the thermocouple 7 is brought into contact with the metal strip 1 and the signal of the thermocouple 7 is outputted to the indicator or recorder 6 through the slip ring 4. 3 in the figure is a bearing.
この測温ロール５は、放射温度計の放射率の補正に使用
することもある（特願昭６２−３２６７１６号参照）。This temperature measuring roll 5 is sometimes used to correct the emissivity of a radiation thermometer (see Japanese Patent Application No. 326,716/1982).
〈発明が解決しようとする課題〉
しかしながら、内部に熱電対７を埋め込んだ上記の測温
ロール５を用いて金属ストリップ１の温度を測定する際
に、金属ストリップｌの形状が悪いと、第６図に示すよ
うに、測温点で必ずしも金属ストリップ１と測温ロール
５とが密着していないことがある。<Problems to be Solved by the Invention> However, when measuring the temperature of the metal strip 1 using the above-mentioned temperature measuring roll 5 in which the thermocouple 7 is embedded, if the shape of the metal strip l is bad, the sixth As shown in the figure, the metal strip 1 and the temperature measuring roll 5 may not necessarily be in close contact with each other at the temperature measuring point.
この場合、従来の測温ロールでは、埋め込まれた熱電対
７が１個であるため、この熱電対７が正しく金属ストリ
ップｌの温度を計測しているのか、或いは金属ストリッ
プ１の温度と一致していない、測温ロール５自体の温度
を計測しているのかが判断できない問題がある。In this case, since the conventional temperature measuring roll has only one embedded thermocouple 7, it is difficult to determine whether this thermocouple 7 is correctly measuring the temperature of the metal strip 1 or whether it matches the temperature of the metal strip 1. There is a problem in that it cannot be determined whether the temperature of the temperature measuring roll 5 itself is being measured.
本発明は、上記従来技術の問題点を有利に解決すること
のできる金属ストリップの温度測定方法及び測温ロール
を提供することを目的とする。An object of the present invention is to provide a method for measuring the temperature of a metal strip and a temperature measuring roll that can advantageously solve the problems of the prior art described above.
く課題を解決するための手段〉
第１の発明は、中空ロールの内部に熱電対を取付けた測
温ロールを金属ストリップに接触させて金属ストリップ
の温度を測定する方法において、複数個の熱電対を前記
中空ロールの内部の胴長方向に間隔をおいて設置し、こ
れらの熱電対の出力信号を相互に比較することにより金
属ストリップの温度を測定するようにしたことを特徴と
する金属ストリップの温度測定方法である。Means for Solving the Problems> The first invention is a method for measuring the temperature of a metal strip by bringing a temperature measuring roll having thermocouples mounted inside the hollow roll into contact with the metal strip, in which a plurality of thermocouples are attached. are installed at intervals in the longitudinal direction of the hollow roll, and the temperature of the metal strip is measured by comparing the output signals of these thermocouples with each other. This is a temperature measurement method.
第２の発明は、中空ロールの内部に熱電対を取付は金属
ストリップに接触させて金属ストリップの温度を測定す
る測温ロールにおいて、複数個の熱電対を前記中空ロー
ルの内部の胴長方向に間隔をおいて設置したことを特徴
とする金属ストリップの測温ロールである。A second invention is a temperature measuring roll in which thermocouples are mounted inside a hollow roll to measure the temperature of the metal strip by bringing them into contact with the metal strip, and a plurality of thermocouples are installed inside the hollow roll in the lengthwise direction of the metal strip. This is a metal strip temperature measuring roll characterized by being installed at intervals.
〈作用〉
中空ロールの胴長方向に複数個の熱電対を設置した測温
ロールを用い、各熱電対の信号を相互に比較し、測温ロ
ールと金属ストリップが接触していると判断できる箇所
に近い熱電対の信号を金属ストリップ温度であると判定
することにより、金属ストリップの温度を正確に測定す
ることができ〈実施例〉
本発明の実施例を図面に基づいて説明する。<Operation> Using a temperature measuring roll with multiple thermocouples installed in the lengthwise direction of the hollow roll, the signals of each thermocouple are compared with each other, and the location where it can be determined that the temperature measuring roll and the metal strip are in contact is determined. The temperature of the metal strip can be accurately measured by determining that the thermocouple signal close to the temperature is the metal strip temperature.Embodiment An embodiment of the present invention will be described based on the drawings.
第１図は本発明の測温ロールの一実施例の断面図であり
、金属ストリップが測温ロールに密着した状態を示す。FIG. 1 is a sectional view of one embodiment of the temperature measuring roll of the present invention, showing a state in which the metal strip is in close contact with the temperature measuring roll.
第１図において、１は鋼帯などの金属ストリップであり
、連続焼鈍炉において所定の熱処理が施される。５は、
中空状の外筒２の内部胴長方向に間隔をおいて複数個の
熱電対を埋め込んだ測温ロールである。この例では、５
個の熱電対７ａ〜７ｅが設けられている。熱電対７ａ〜
７ｅによる検出信号は、スリップリング４を介して指示
計又は記録計６に出力するようになっている。In FIG. 1, reference numeral 1 denotes a metal strip such as a steel strip, which is subjected to a predetermined heat treatment in a continuous annealing furnace. 5 is
This is a temperature measuring roll in which a plurality of thermocouples are embedded at intervals in the longitudinal direction of a hollow outer cylinder 2. In this example, 5
Thermocouples 7a to 7e are provided. Thermocouple 7a~
A detection signal from 7e is outputted to an indicator or recorder 6 via a slip ring 4.
しかして、第１図のように、測温ロール５と金属ストリ
ップ１とがほぼ完全に密着していれば、熱電対７ａ〜７
ｅの信号は、ばらつきが狭くほぼ同じ値を示し、従って
、金属ストリップ１の温度としては、中心に配置した７
Ｃの信号を使用することができる。As shown in FIG. 1, if the temperature measuring roll 5 and the metal strip 1 are in almost complete contact, then
The signal of e shows almost the same value with narrow variation, and therefore, the temperature of the metal strip 1 is determined by the temperature of the 7
C signals can be used.
これを、金属ストリップ１の幅６００ｒＲ＋＊に対して
、５個の熱電対７ａ〜７ｅを金属ストリップ１の内側に
位置するように、１００胴の間隔で設置した具体的実施
例で説明する。This will be explained using a specific example in which five thermocouples 7a to 7e are installed at intervals of 100 cylinders so as to be located inside the metal strip 1 with respect to the width 600rR+* of the metal strip 1.
測温ロール５と金属ストリップ１とがほぼ完全に密着し
ているときには、第２図に示すように、連続焼鈍炉の雰
囲気温度が７５０°Ｃの場合、熱電対７ａ〜７ｅの信号
はバラツキの幅が１０゛Ｃ以内のほぼ同じ値を示した。When the temperature measuring roll 5 and the metal strip 1 are in almost complete contact with each other, as shown in FIG. The widths showed almost the same values within 10°C.
従って、金属ストリップ１の温度は、前記のように、中
心に配置した７Ｃの信号を使用することができ、その値
は６８Ｂ’Ｃである。Therefore, for the temperature of the metal strip 1, as mentioned above, a centrally located 7C signal can be used, the value of which is 68B'C.
なお、雰囲気温度が金属ストリップより高い時（加熱時
）には金属ストリップの温度は＋５°Ｃ以内で、逆に低
い時（冷却時）には−５°Ｃ以内であった。Note that when the ambient temperature was higher than the metal strip (during heating), the temperature of the metal strip was within +5°C, and conversely, when it was lower (during cooling), it was within -5°C.
しかし、金属ストリップ１が、第３図のように、測温ロ
ール５に密着していなければ、第４図に示すように、熱
電対７の信号は大きなバラツキを生じる。However, if the metal strip 1 is not in close contact with the temperature measuring roll 5 as shown in FIG. 3, the signal from the thermocouple 7 will vary greatly as shown in FIG.
この場合には、金属ストリップ１が測温ロール５に熱を
与えるように作用するか、又は、測温ロール５から熱を
奪うように作用するかで、採用すべき温度が変わり、周
囲温度よりも金属ストリップ１の温度の方が高いと考え
られる場所に設置した測温ロール５の場合は、最高温度
を示す温度を採用し、逆に周囲温度よりも金属ストリッ
プｌの温度が低いと考えられる場所に配置した場合は、
最低温度を示す熱電対信号を採用する。前記の具体的実
施例において、熱電対７ａ〜７ｅの信号のバラツキが５
０゛Ｃ以内であれば、最高値又は最低値を採用した場合
、金属ストリップ１との温度誤差は±１５°Ｃ程度であ
る。In this case, the temperature to be adopted changes depending on whether the metal strip 1 acts to give heat to the temperature measuring roll 5 or to take away heat from the temperature measuring roll 5, and is lower than the ambient temperature. In the case of the temperature measuring roll 5 installed in a place where the temperature of the metal strip 1 is considered to be higher than that of the metal strip 1, the temperature indicating the highest temperature is adopted, and conversely, the temperature of the metal strip 1 is considered to be lower than the ambient temperature. If you place it in a location,
Adopt a thermocouple signal that indicates the lowest temperature. In the specific embodiment described above, the variation in the signals of the thermocouples 7a to 7e is 5.
If the temperature is within 0°C, the temperature error with the metal strip 1 is approximately ±15°C when the highest or lowest value is adopted.
なお、前記の具体的実施例では、金属ストリップの板幅
６００ｆｆ１１に対して、熱電対を５本設置したが、通
常、測温ロールに埋め込む熱電対は、１００ｍ間隔で、
ストリップの蛇行を考慮して、測定対象の最大板幅より
１００ｍ余裕を持った幅をカバーできるのがよい、そし
て、金属ストリップの温度計測用としては、計測時に測
温ロール上を通過しているストリップの幅よりも内側に
配置されている熱電対を用いる。金属ストリップの幅か
らはずれた熱電対は、周囲温度の影響を強く受けている
ので、金属ストリップの温度測定に不適である。In addition, in the above-mentioned specific example, five thermocouples were installed for the plate width of 600ff11 of the metal strip, but normally, thermocouples embedded in the temperature measuring roll are placed at intervals of 100 m.
Taking into consideration the meandering of the strip, it is best to be able to cover a width 100 m wider than the maximum width of the object to be measured, and for measuring the temperature of a metal strip, it is best to pass it over a temperature measuring roll during measurement. Use thermocouples placed inside the width of the strip. Thermocouples that are outside the width of the metal strip are not suitable for measuring the temperature of the metal strip because they are strongly affected by the ambient temperature.
精度を高めるために、熱電対の間隔を狭くして本数を増
したり、測温ロールの円周方向に本数を増すことは有効
である。In order to improve accuracy, it is effective to increase the number of thermocouples by narrowing the interval between them, or to increase the number of thermocouples in the circumferential direction of the temperature measuring roll.
以上の実施例は連続熱処理炉について説明したが、測温
ロールが容易に利用できるラインに適用することが可能
なことは勿論である。Although the above embodiments have been described with respect to a continuous heat treatment furnace, it is of course possible to apply the present invention to a line where a temperature measuring roll can be easily used.
〈発明の効果〉
以上説明したように本発明により、簡単な手段で正確に
金属ストリップの温度を測定することができ優れた効果
を有する。<Effects of the Invention> As explained above, according to the present invention, the temperature of a metal strip can be accurately measured by a simple means, and it has excellent effects.
第１図は本発明の測温ロールの一実施例の断面図であり
、金属ストリップが測温ロールに密着した状態を示す、
第２図は第１図の状態で金属ストリップの温度を測定し
た場合の具体的実施例を示す。
第３図は本発明の測温ロールの一実施例の断面図であり
、金属ストリップの一部が測温ロールから浮いている状
態を示す、第４図は第３図の状態で金属ストリップの温
度を測定した場合の具体的実施例を示す。
第５図（１）は従来の測温ロールの断面図であり、金属
ストリップが測温ロールに密着した状態を示し、第５図
（２）は第５図（１）の１−■線断面図である。
第６図は従来の測温ロールの断面図であり、金属ストリ
ップの一部が測温ロールから浮いている状態を示す。
第１図
１・・・金属ストリップ、２・・・外筒、３・・・軸受
、 ４・・・カップリング、５・・・測温ロ
ール、 ６・・・指示計又は記録計、７ａ〜７ｅ・・
・熱電対。
第２図FIG. 1 is a cross-sectional view of one embodiment of the temperature measuring roll of the present invention, showing a state in which the metal strip is in close contact with the temperature measuring roll.
FIG. 2 shows a specific example in which the temperature of a metal strip is measured in the state shown in FIG. FIG. 3 is a cross-sectional view of one embodiment of the temperature measuring roll of the present invention, showing a state in which a part of the metal strip is floating from the temperature measuring roll. FIG. 4 is a sectional view of the metal strip in the state shown in FIG. A specific example of measuring temperature will be shown. Figure 5 (1) is a cross-sectional view of a conventional temperature measuring roll, showing a state in which the metal strip is in close contact with the temperature measuring roll, and Figure 5 (2) is a cross-sectional view taken along line 1-■ in Figure 5 (1). It is a diagram. FIG. 6 is a cross-sectional view of a conventional temperature measuring roll, showing a state in which a part of the metal strip is floating from the temperature measuring roll. Fig. 1 1...Metal strip, 2...Outer cylinder, 3...Bearing, 4...Coupling, 5...Temperature measuring roll, 6...Indicator or recorder, 7a~ 7e...
·thermocouple. Figure 2
Claims (2)
を金属ストリップに接触させて金属ストリップの温度を
測定する方法において、複数個の熱電対を前記中空ロー
ルの内部の胴長方向に間隔をおいて設置し、これらの熱
電対の出力信号を相互に比較することにより金属ストリ
ップの温度を測定するようにしたことを特徴とする金属
ストリップの温度測定方法。(1) In a method of measuring the temperature of a metal strip by bringing a temperature measuring roll with thermocouples attached inside the hollow roll into contact with the metal strip, a plurality of thermocouples are placed at intervals in the lengthwise direction of the inside of the hollow roll. A method for measuring the temperature of a metal strip, characterized in that the temperature of the metal strip is measured by mutually comparing the output signals of these thermocouples.
プに接触させて金属ストリップの温度を測定する測温ロ
ールにおいて、複数個の熱電対を前記中空ロールの内部
の胴長方向に間隔をおいて設置したことを特徴とする金
属ストリップの測温ロール。(2) In a temperature measuring roll that measures the temperature of a metal strip by installing a thermocouple inside the hollow roll and bringing it into contact with the metal strip, a plurality of thermocouples are installed inside the hollow roll at intervals in the lengthwise direction of the metal strip. A metal strip temperature measuring roll that is characterized by being installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1095414A JPH0814513B2 (en) | 1989-04-17 | 1989-04-17 | How to measure the temperature of a metal strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1095414A JPH0814513B2 (en) | 1989-04-17 | 1989-04-17 | How to measure the temperature of a metal strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02275329A true JPH02275329A (en) | 1990-11-09 |
| JPH0814513B2 JPH0814513B2 (en) | 1996-02-14 |
Family
ID=14137024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1095414A Expired - Fee Related JPH0814513B2 (en) | 1989-04-17 | 1989-04-17 | How to measure the temperature of a metal strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0814513B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2678852A1 (en) * | 1991-07-10 | 1993-01-15 | Lorraine Laminage | ROLLER FOR SUPPORTING OR DRIVING FLAT PRODUCTS, IN PARTICULAR FOR A CONTINUOUS PROCESSING PLANT. |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5621028A (en) * | 1979-07-30 | 1981-02-27 | Daido Steel Co Ltd | Continuously measuring apparatus for temperature of moving strip |
| JPS5880703A (en) * | 1981-11-09 | 1983-05-14 | Mitsubishi Electric Corp | Temperature controller |
| JPH028721A (en) * | 1988-06-28 | 1990-01-12 | Kawatetsu Techno Res Corp | Method and apparatus for measuring temperature of metallic running body |
| JPH02255219A (en) * | 1989-03-30 | 1990-10-16 | Nippon Steel Corp | Measuring device for plate temperature in plate rolling |
-
1989
- 1989-04-17 JP JP1095414A patent/JPH0814513B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5621028A (en) * | 1979-07-30 | 1981-02-27 | Daido Steel Co Ltd | Continuously measuring apparatus for temperature of moving strip |
| JPS5880703A (en) * | 1981-11-09 | 1983-05-14 | Mitsubishi Electric Corp | Temperature controller |
| JPH028721A (en) * | 1988-06-28 | 1990-01-12 | Kawatetsu Techno Res Corp | Method and apparatus for measuring temperature of metallic running body |
| JPH02255219A (en) * | 1989-03-30 | 1990-10-16 | Nippon Steel Corp | Measuring device for plate temperature in plate rolling |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2678852A1 (en) * | 1991-07-10 | 1993-01-15 | Lorraine Laminage | ROLLER FOR SUPPORTING OR DRIVING FLAT PRODUCTS, IN PARTICULAR FOR A CONTINUOUS PROCESSING PLANT. |
| US5279534A (en) * | 1991-07-10 | 1994-01-18 | Sollac, A French Body Corporate | Roller for supporting or driving flat products, in particular for a continuous treating installation |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0814513B2 (en) | 1996-02-14 |
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