JPS6362286B2 - - Google Patents
Info
- Publication number
- JPS6362286B2 JPS6362286B2 JP60242365A JP24236585A JPS6362286B2 JP S6362286 B2 JPS6362286 B2 JP S6362286B2 JP 60242365 A JP60242365 A JP 60242365A JP 24236585 A JP24236585 A JP 24236585A JP S6362286 B2 JPS6362286 B2 JP S6362286B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- heat
- emissivity
- low
- emissivity surface
- 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
Links
- 238000000034 method Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 description 14
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000011162 core material Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/008—Heat shields
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Tunnel Furnaces (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は高温物体の保温方法に関し、より詳細
には搬送される高温物体の温度をその物体の進行
方向（長手方向）に均一に保温する方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for keeping a high-temperature object warm, and more specifically, it relates to a method for keeping a high-temperature object being conveyed uniformly in its traveling direction (longitudinal direction). It is about the method.
（従来の技術）
搬送される高温物体として熱間圧延鋼材を例に
して、従来の技術を説明する。(Prior Art) A conventional technology will be described using a hot rolled steel material as an example of a high-temperature object to be transported.
従来、熱間圧延鋼材の温度降下を抑制する技術
として、第６図に示すようにローラー６等よりな
る搬送テーブル上に保温カバー８を設けることが
行われている。 BACKGROUND ART Conventionally, as a technique for suppressing the temperature drop of hot rolled steel materials, as shown in FIG. 6, a heat insulating cover 8 is provided on a conveying table consisting of rollers 6 and the like.
保温カバー８を設けたときの、高温物体である
被圧延材５からの放散熱量Ｑは次式で与えられ
る。 When the heat insulating cover 8 is provided, the amount of heat Q dissipated from the rolled material 5, which is a high temperature object, is given by the following equation.
Ｑ＝4.88ε・〔（273＋ta／100）4−（273＋ta／100）+
〕……(1)
ε＝１／１／ε1＋１／ε2−１ ……(2)
但し、Ｑ；放散熱量（kcal／hr）
ts；被圧延材表面温度（℃）
ta；保温カバーの内面の温度（℃）
ε1；被圧延材の輻射率
ε2；保温カバーの内面の輻射率
である。Q=4.88ε・[(273+ta/100) 4 −(273+ta/100) +
]...(1) ε=1/1/ε 1 +1/ε 2 -1...(2) However, Q: Dissipated heat amount (kcal/hr) ts: Rolled material surface temperature (℃) ta: Heat insulation cover Temperature (°C) of the inner surface of ε 1 ; Emissivity of the rolled material ε 2 ; Emissivity of the inner surface of the heat-insulating cover.
この保温カバーは熱間圧延鋼材の温度降下を抑
制することを目的としているが、保温カバーの内
面の輻射率をどうするかについては二つの考え方
がある。 The purpose of this heat-insulating cover is to suppress the temperature drop of the hot-rolled steel material, but there are two ways of thinking about how to determine the emissivity of the inner surface of the heat-insulating cover.
「アイ・アンド・エスエム セプテンバー
1982 ホツト・ストリツプ・ミル・デイベロツプ
メント」（Ｉ＆SM SEPTEMBER 1982 HOT
STRIP MILL DEVELOPMENT）に記載され
ているエンコ・パネル（ENCO PANEL）方式
は、保温カバーの内面の輻射率を高くするもので
ある。これは(1)式におけるtaを短時間の内にtsに
近い温度まで上昇させ、熱平衡状態を作り出して
Ｑを小さくするものである。 “I & S M September
1982 Hot Strip Mill Development” (I&SM SEPTEMBER 1982 HOT
The ENCO PANEL method described in STRIP MILL DEVELOPMENT increases the emissivity of the inner surface of the thermal cover. This is to raise ta in equation (1) to a temperature close to ts within a short time, create a thermal equilibrium state, and reduce Q.
一方、実開昭52−84529号公報は内面を低輻射
率表面とする保温カバーを開示している。これ
は、(2)式におけるε2を小さくすることによつてε
を小さくし、Ｑを減少させようという考え方であ
る。 On the other hand, Japanese Utility Model Application Publication No. 52-84529 discloses a heat insulating cover whose inner surface has a low emissivity surface. This can be achieved by reducing ε 2 in equation (2).
The idea is to reduce Q and reduce Q.
（発明が解決しようとする問題点）
ところで、被圧延材等の高温物体の温度は一般
的に第７図に示すように長手方向先端、後端部分
が低く、中央部が高い分布となつている。この温
度分布は品質上、均一なのが望ましいが、前述の
従来の保温技術では、保温カバーの内面の輻射率
を高くした場合、低くした場合のいづれの場合に
おいても問題がある。(Problem to be Solved by the Invention) By the way, the temperature of a high-temperature object such as a rolled material generally has a distribution in which the temperature is low at the tip and rear end in the longitudinal direction and high at the center, as shown in Figure 7. There is. Although it is desirable for this temperature distribution to be uniform in terms of quality, the conventional heat retention technology described above has problems whether the emissivity of the inner surface of the heat retention cover is made high or low.
保温カバー内面の輻射率が高い場合は、温度の
高い被圧延材の中央部から後端にかけて均一保温
の効果があるが、温度の低い先端では保温効果が
ない。 When the emissivity of the inner surface of the heat insulation cover is high, there is an effect of uniform heat retention from the center to the rear end of the rolled material where the temperature is high, but there is no heat retention effect at the tip where the temperature is low.
また、輻射率を低くする場合は、保温効果は被
圧延材の全長に亙つて期待できるが、高温酸化の
ために低輻射率を長期間保持することができず、
実操業に安定して適用できないという問題があ
る。 In addition, when lowering the emissivity, a heat retention effect can be expected over the entire length of the rolled material, but due to high temperature oxidation, it is not possible to maintain a low emissivity for a long period of time.
There is a problem that it cannot be stably applied to actual operations.
本発明は、これら従来技術の有する問題点を解
決し、高温物体の全長において均一した保温効果
を安定して有する保温方法を提供する。 The present invention solves the problems of these conventional techniques and provides a heat retention method that stably maintains a uniform heat retention effect over the entire length of a high-temperature object.
（問題点を解決するための手段）
本発明の要旨は、高温搬送物体を保温カバーに
より保温する方法において、高温搬送物体の搬送
移動に応じて保温カバー内面を順次低輻射率表面
から高輻射率表面に切換え、高温搬送物体の先端
部は低輻射率表面で、中央部および後端部は高輻
射率表面で保温することを特徴とする高温搬送物
体の保温方法である。(Means for Solving the Problems) The gist of the present invention is to provide a method for keeping a high-temperature conveyed object warm with a heat-insulating cover, in which the inner surface of the heat-insulating cover is sequentially changed from a low-emissivity surface to a high-emissivity surface as the high-temperature conveyed object is conveyed. This method of keeping a high temperature conveyed object warm is characterized in that the front end of the high temperature conveyed object is kept warm by a low emissivity surface, and the center and rear end portions are kept warm by a high emissivity surface.
本発明方法において使用する保温カバーは、そ
の内面を高温物体の搬送方向に対して横断する方
向に句切り、その句切つた各区画毎に低輻射率表
面と高輻射率表面とに切換えることができるよう
に構成する。そして、高温物体が搬送されて来る
前は低輻射率表面を内側に向けて待機する。 The heat insulating cover used in the method of the present invention has its inner surface divided in a direction transverse to the direction of conveyance of the high-temperature object, and each section can be switched between a low emissivity surface and a high emissivity surface. Configure it so that you can. Then, before the high-temperature object is transported, it waits with the low emissivity surface facing inward.
高温物体が搬送されて来ると、その先端部に対
しては低輻射率表面を向けて保温を行うが、温度
の高い中央部が進行してくるのに応じて順次保温
カバーの内面を高輻射率表面に切換える。後端部
に対しては、高輻射率表面のままで切換え不要で
ある。 When a high-temperature object is conveyed, the tip is kept warm by facing the low-emissivity surface, but as the high-temperature central part advances, the inner surface of the heat-insulating cover is sequentially turned to the high-emissivity surface. Switch to rate surface. The rear end remains a high emissivity surface and does not require switching.
切換えの時機は高温物体の温度分布、寸法等の
条件に基いて適宜設定すればよい。そして、例え
ば、搬送速度より先端通過後、中央部が通過し始
めるまでの時間ｔを求めておき、保温カバーのあ
る位置に設けた検出器により高温物体の先端の通
過を検出したら、それより時間ｔ後にその位置の
保温カバー内面を低輻射率表面から高輻射率表面
に切換えればよい。 The timing of switching may be appropriately set based on conditions such as temperature distribution and dimensions of the high-temperature object. Then, for example, calculate the time t from when the tip passes until the center begins to pass from the conveyance speed, and when the passage of the tip of the high-temperature object is detected by a detector installed at a position where the heat insulating cover is, the time t After t, the inner surface of the heat insulating cover at that position may be switched from a low emissivity surface to a high emissivity surface.
高温物体通過後は低輻射率表面に切換えて、次
の搬送に備えて待機する。 After passing the high-temperature object, the surface is switched to a low emissivity surface and stands by in preparation for the next conveyance.
なお、低輻射率表面、高輻射率表面は、材質を
適宜選択することにより構成することができる。 Note that the low emissivity surface and the high emissivity surface can be constructed by appropriately selecting materials.
（作用）
低輻射率表面により、高温物体中の比較的低温
である先端部を有効に保温し、比較的高温である
中央部から比較的低温である後端部にかけては高
輻射率表面により、中央部の高温を利用して高輻
射率表面の温度を上昇させて有効に保温する。(Function) The low emissivity surface effectively keeps the relatively low-temperature tip of the high-temperature object warm, and the high-emissivity surface from the relatively high-temperature center to the relatively low-temperature rear end. Utilizing the high temperature in the center, the temperature of the high emissivity surface is increased to effectively retain heat.
（実施例）
本発明法に使用する保温カバーの例として熱間
圧延鋼材の保温カバーを示す。(Example) A heat-insulating cover made of hot-rolled steel is shown as an example of a heat-insulating cover used in the method of the present invention.
第１図は断熱材２を芯材として片面を低輻射率
表面１とし、他面を高輻射率表面３とし、軸４を
中央に回転可能としたものを並べて構成した保温
カバーを示す。これらは各々独立に回転させるこ
とができ、高温搬送物体である被圧延材５の移動
に応じて順次低輻射率表面から高輻射率表面へ切
換えていく。 FIG. 1 shows a heat insulating cover constructed by arranging a heat insulating material 2 as a core material, a low emissivity surface 1 on one side, a high emissivity surface 3 on the other side, and rotatable shafts 4 in the center. Each of these can be rotated independently, and is sequentially switched from a low emissivity surface to a high emissivity surface in accordance with the movement of the rolled material 5, which is a high-temperature conveyed object.
第２図は別の例を示す。この例においては芯材
となる断熱材２は円筒形とし、周面に低輻射率表
面１と高輻射率表面３の部分を設ける。そして、
第１図に示す例と同様に回転により低・高輻射率
表面を切換える。 FIG. 2 shows another example. In this example, the heat insulating material 2 serving as the core material has a cylindrical shape, and a low emissivity surface 1 and a high emissivity surface 3 are provided on the circumferential surface. and,
Similar to the example shown in FIG. 1, the low and high emissivity surfaces are switched by rotation.
なお、この円筒形に構成する場合は、第３図に
示すようなブラシ７を設置して、回転時に汚れや
酸化被膜を除去するようにすることも可能であ
る。 In the case of this cylindrical configuration, it is also possible to install a brush 7 as shown in FIG. 3 to remove dirt and oxide film during rotation.
第４図はさらに別の保温カバーの例を示す。こ
の例では、高輻射率表面３の前に低輻射率被圧延
材１を有し、軸４を中心に回転可能な矩形の板を
配設する。この板は高温物体の先端部が通過する
間は被圧延材５と平行とし、低輻射率表面１によ
る保温が行われる。温度の高い中央部が進行して
くるのに応じて軸４を中央にこの板を90゜回転さ
せて低輻射率表面を第４図に示す１ａの状態と
し、高輻射率表面３による保温を行う。 FIG. 4 shows yet another example of a heat retaining cover. In this example, a rectangular plate having a low emissivity rolled material 1 in front of a high emissivity surface 3 and rotatable about an axis 4 is disposed. This plate is parallel to the material to be rolled 5 while the tip of the high-temperature object passes therethrough, and the low emissivity surface 1 retains heat. As the high-temperature central part advances, this plate is rotated 90 degrees around axis 4 to bring the low emissivity surface into the state 1a shown in Figure 4, and the high emissivity surface 3 retains heat. conduct.
（発明の効果）
本発明方法によれば、従来の低輻射率表面のみ
による保温、高輻射率表面のみによる保温の有す
る問題点を解決し、高温搬送物体を第５図に実線
で示すような均一な温度分布となるように保温す
ることができる。(Effects of the Invention) According to the method of the present invention, the problems of conventional heat retention using only low-emissivity surfaces and heat retention using only high-emissivity surfaces are solved, and the high-temperature conveyed object can be transported as shown by the solid line in FIG. It is possible to maintain heat so that the temperature distribution is uniform.
第１図は本発明方法に使用する保温カバーの一
例を示す図、第２図は本発明方法に使用する他の
保温カバーの例を示す図、第３図は低輻射率表面
の汚れ等を除去するブラシの例を示す図、第４図
は本発明方法に使用するさらに他の保温カバーの
例を示す図、第５図は本発明に係る保温方法によ
る均一保温効果の例を示す図、第６図は従来の熱
間圧延鋼材の保温カバーを示す図、第７図は高温
物体の温度分布の例を示す図である。
１……低輻射率表面、２……断熱材、３……高
輻射率表面、４……軸、５……被圧延材、６……
ローラー、７……ブラシ、８……保温カバー、９
……軸受、１０……モーター。
Figure 1 is a diagram showing an example of a heat retaining cover used in the method of the present invention, Figure 2 is a diagram showing an example of another heat retaining cover used in the method of the present invention, and Figure 3 is a diagram showing dirt, etc. on the low emissivity surface. FIG. 4 is a diagram showing an example of a brush to be removed, FIG. 4 is a diagram showing another example of a heat insulation cover used in the method of the present invention, FIG. 5 is a diagram showing an example of uniform heat retention effect by the heat retention method according to the present invention, FIG. 6 is a diagram showing a conventional heat-insulating cover made of hot-rolled steel, and FIG. 7 is a diagram showing an example of the temperature distribution of a high-temperature object. 1...Low emissivity surface, 2...Insulating material, 3...High emissivity surface, 4...Shaft, 5...Rolled material, 6...
Roller, 7...Brush, 8...Heat cover, 9
... bearing, 10 ... motor.
Claims (1)
法において、高温搬送物体の搬送移動に応じて保
温カバー内面を順次低輻射率表面から高輻射率表
面に切換え、高温搬送物体の先端部は低輻射率表
面で、中央部および後端部は高輻射率表面で保温
することを特徴とする高温搬送物体の保温方法。1 In a method of keeping a high-temperature conveyed object warm with a thermal cover, the inner surface of the thermal cover is sequentially switched from a low-emissivity surface to a high-emissivity surface according to the conveyance movement of the high-temperature conveyed object, and the tip of the high-temperature conveyed object is a low-emissivity surface. A method for keeping a high-temperature conveyed object warm, characterized in that the central part and the rear end are kept warm by a high emissivity surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60242365A JPS62101315A (en) | 1985-10-29 | 1985-10-29 | Heat insulating method for high temperature carrier body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60242365A JPS62101315A (en) | 1985-10-29 | 1985-10-29 | Heat insulating method for high temperature carrier body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62101315A JPS62101315A (en) | 1987-05-11 |
| JPS6362286B2 true JPS6362286B2 (en) | 1988-12-01 |
Family
ID=17088094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60242365A Granted JPS62101315A (en) | 1985-10-29 | 1985-10-29 | Heat insulating method for high temperature carrier body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62101315A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020179478A1 (en) | 2019-03-05 | 2020-09-10 | 正通 亀井 | Advice presentation system |
| WO2020195682A1 (en) * | 2019-03-25 | 2020-10-01 | オムロンヘルスケア株式会社 | Lifestyle improvement suggestion device, lifestyle improvement suggestion method, and lifestyle improvement suggestion program |
-
1985
- 1985-10-29 JP JP60242365A patent/JPS62101315A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020179478A1 (en) | 2019-03-05 | 2020-09-10 | 正通 亀井 | Advice presentation system |
| US11768879B2 (en) | 2019-03-05 | 2023-09-26 | Land Business Co., Ltd. | Advice presentation system |
| WO2020195682A1 (en) * | 2019-03-25 | 2020-10-01 | オムロンヘルスケア株式会社 | Lifestyle improvement suggestion device, lifestyle improvement suggestion method, and lifestyle improvement suggestion program |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62101315A (en) | 1987-05-11 |
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