JPS59232215A - Skid pipe for billet heating furnace - Google Patents
Skid pipe for billet heating furnaceInfo
- Publication number
- JPS59232215A JPS59232215A JP10573683A JP10573683A JPS59232215A JP S59232215 A JPS59232215 A JP S59232215A JP 10573683 A JP10573683 A JP 10573683A JP 10573683 A JP10573683 A JP 10573683A JP S59232215 A JPS59232215 A JP S59232215A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- skid
- insulating member
- pipe
- heat insulating
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/02—Skids or tracks for heavy objects
- F27D3/022—Skids
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は鋼片加熱炉用スキッドパイプの改良に関する。[Detailed description of the invention] The present invention relates to improvements in skid pipes for steel billet heating furnaces.
鋼片加熱炉内で鋼片を支持しているスキッドパイプは、
一般にその内部に冷却水が流通し熱影響による強度の低
下が防止さnている。だがこの水冷スキッドは、冷却水
を通じての損失熱が加熱炉入熱の約109sにものにυ
、温度ポテンシャルが低いため有効な熱回収を行い得な
いという根本的な問題を有している。このため加熱炉の
省エネルギーを達成する上で、スキッドパイプの冷却を
例えは気体等の水以外の媒体で行うことによシ、スキッ
ドからの熱拶をいかに少くし、さらにその熱を有効に回
収できるかが大きな技術的な課題と外っている。ところ
が、スキッド冷却ケ気体(例えば空気)で行う場合、次
のような大きな問題がある。即ちスキン・ドパイブの外
周には、冷却損失熱の低減とパイプ金用の保護のために
断熱材が巻かn、ているが、この断熱材は操業中100
0〜1300℃という高温の雰囲気にさらされ、逆に停
炉時や保熱時には常温〜数百度に低下するため熱的な変
形等を受は易く、このため断熱材の脱落という問題を生
ずる。このような断熱材の脱落に対し、第1図中(AI
で示すような水冷の場合には、冷却能力そのものが太き
い几め金属パイプ本体の温度は許容限界温度(350〜
400℃程度)を越えることはないが、同図中)で示す
気体冷却の場合には、冷却能力が水冷に較べ劣ることか
ら、金属パイプ本体温度が許容限界温度を越えてしまい
、スキッドパイプの強度維持が難しくなってしまう。The skid pipe that supports the steel billets in the billet heating furnace is
Generally, cooling water flows inside the structure to prevent a decrease in strength due to thermal effects. However, with this water-cooled skid, the heat lost through the cooling water is approximately 109 seconds after the heating furnace heat input.
However, the fundamental problem is that effective heat recovery cannot be performed due to the low temperature potential. Therefore, in order to save energy in the heating furnace, it is important to cool the skid pipe with a medium other than water, such as gas, to reduce the heat generated by the skid and to recover the heat effectively. Whether it can be done is a major technical challenge. However, when skid cooling is performed using a gas (for example, air), there are the following major problems. That is, a heat insulating material is wrapped around the outer circumference of the skin pipe to reduce heat loss due to cooling and protect the pipe metal.
It is exposed to a high temperature atmosphere of 0 to 1,300 degrees Celsius, and conversely, during shutdown or heat retention, the temperature drops to room temperature to several hundred degrees, making it susceptible to thermal deformation and the like, resulting in the problem of the insulation material falling off. In order to prevent such falling of the insulation material, in Figure 1 (AI
In the case of water cooling as shown in , the temperature of the thin metal pipe body with large cooling capacity itself is the permissible limit temperature (350 ~
However, in the case of gas cooling shown in the figure), the cooling capacity is inferior to water cooling, so the temperature of the metal pipe body exceeds the allowable limit temperature, and the skid pipe It becomes difficult to maintain strength.
本発明はこのような従来の欠点に鑑み発明されたもので
、気体冷却が可能なスキッドパイプの構造を提供せんと
するものである。The present invention was devised in view of these conventional drawbacks, and it is an object of the present invention to provide a skid pipe structure that can be cooled with gas.
このため本発明は、パイプ本体の外周に第1の断熱部材
を設けるとともに、該第1の断熱部材の外周に該断熱部
材保持用の耐熱性プロテクタを設け、該耐熱性プロテク
タの外周に第2の断熱部材を設けたことをその基本的特
徴とする。Therefore, the present invention provides a first heat insulating member on the outer periphery of the pipe body, a heat resistant protector for holding the heat insulating member on the outer periphery of the first heat insulating member, and a second heat insulating member on the outer periphery of the heat resistant protector. Its basic feature is that it is equipped with a heat insulating member.
以下本考案の一実施例について説明する。An embodiment of the present invention will be described below.
第2図ないし第4図は本発明をスキッドロングビーム(
横材)に適用した場合の一実施例を示すもので、(1)
はパイプ本体、(2)はスキッドボタンでメジ、加熱鋼
片はこのスキッドボタン(2)を介してパイプ本体(1
)に支持されるようになっている。Figures 2 to 4 show the present invention as a skid long beam (
(1)
is the pipe body, (2) is the skid button, and the heated steel piece is connected to the pipe body (1) through this skid button (2).
).
パイプ本体(1)の外周には第1の断熱部材(3)が巻
装さ九ている。パイプ本体(1)の長手方向で所定の間
隔ケおいた位置には、スタッド(6)が周方向で間隔的
に設けられ、前記Mlの断熱部材(3)の取付状態を補
強している。この断熱部材(3)としては1例えば、セ
ラミックファイバー、キャスタブル耐火物等が用いられ
る。A first heat insulating member (3) is wrapped around the outer periphery of the pipe body (1). Studs (6) are provided at predetermined intervals in the longitudinal direction of the pipe body (1) at intervals in the circumferential direction, reinforcing the mounting state of the Ml heat insulating member (3). As this heat insulating member (3), for example, ceramic fibers, castable refractories, etc. are used.
また、この断熱部材(3)は1層又は2層以上の断熱材
によシ構成せしめることが可能である。Moreover, this heat insulating member (3) can be constructed of one or more layers of heat insulating material.
なお、前記スタッド(6)には耐熱性の高い材質(金属
又はセラミック)が用いら牡るが、このスタッド(6)
に代えて固定ビン等を用いることができる。Note that the stud (6) is preferably made of a highly heat-resistant material (metal or ceramic);
A fixed bottle or the like can be used instead.
上記第1の断熱部材(3)の外周には、該断熱部材(3
)をパイプ本体に対して保持するための耐熱性プロテク
タ(4)が設けられている。この耐熱性プロテクタ(4
ンは耐熱温度1250℃程度以上の金属やセラミックに
より構成さiするもので、例えば金属の場合、28%自
・−21%Fe−0,1%C−0.9%Mn−1%5i
−7A部Coの組成を有するコバルト合金、或いはTH
OO4(C: 0.08チ以下、cr : 48.0〜
52.0%、Ni : 1.0〜1.5%を主成分とし
、これにCo、W、Nb’i含む)、TAH−39(C
: O,i%、Cr: 35%、Ni:5(1+、W:
15チ〕等が用いられる。また、この耐熱性プロテクタ
(4)を金属によす構成せしめる鵠合、板体の他、金網
やメツシュベルト等を用いることができる。On the outer periphery of the first heat insulating member (3), the first heat insulating member (3)
) is provided with a heat-resistant protector (4) for holding it against the pipe body. This heat resistant protector (4
The ring is made of metal or ceramic that has a heat resistance temperature of about 1250°C or higher.For example, in the case of metal, it is made of 28% carbon, -21%Fe, 0.1%C, 0.9%Mn, and 1%5i.
Cobalt alloy having a composition of -7A part Co or TH
OO4 (C: 0.08 inch or less, cr: 48.0~
52.0%, Ni: 1.0-1.5% as the main component, including Co, W, Nb'i), TAH-39 (C
: O, i%, Cr: 35%, Ni: 5(1+, W:
15chi] etc. are used. Further, in addition to a metal mesh or plate body, the heat-resistant protector (4) may also be made of a wire mesh, a mesh belt, or the like.
上記耐熱性プロテクタ(4)の外周には第2の断熱話す
材(5)が巻装畑れている。この断熱部材(5)の材質
も上記第1O断熱陣材と同様セラミックファ・fバーや
キャスタブル耐火rT;3等が用いら7Lる。A second heat-insulating material (5) is wrapped around the outer periphery of the heat-resistant protector (4). The material of this heat insulating member (5) is similar to the first O heat insulating material, such as ceramic fiber or castable refractory rT;3.
なお、前記スキッドボタン(2)はその先端が第2の断
熱部材(5)′l!1ll−ら芙出し、加熱鋼片を失持
するようになっている。Note that the tip of the skid button (2) is connected to the second heat insulating member (5)'l! The heated steel billet is designed to be removed from the 1 liter.
なお、な15図は不発明をスキッドボストビーム(縦材
)に適用した場合を丞すものであるが、スキッドボタン
がない点を除いて第2図ないし第4区に示すものと同様
の構造を有している。In addition, Figure 15 shows the case where the invention is applied to a skid bost beam (vertical member), but the structure is similar to that shown in Figures 2 to 4 except that there is no skid button. have.
また第71(a)ないしくciに示すものは、第2の断
熱部材な省略した形で用いられるスキッドパイプの断面
構造を示すものであり、場合によってはこのような構造
も採用することができる。このうち(a)に示されるも
のは、パイプ本体(1)の外周にセラミックファイバー
(7)が設けら1するとともに、さらにその外周にキャ
スタブル耐火物(8)が設けられ、これらが断熱部材(
9)を構成している。そして、この断熱部材(9)の外
周に耐熱性プロテクタ(4)が設けられている。パイプ
本体(1)の周方向にはアンカースタッド四が設けられ
ている。ま穴、(b)に示さnるものは、パイプ本体(
1)の外周にラスαυが巻装さt′1.、その外周にセ
ラミックファイバーによゐ断熱部材(9)が巻装さ扛、
さらにその外周に耐熱性プロテクタ(4)が設けらtし
ている。In addition, what is shown in Articles 71(a) to ci shows the cross-sectional structure of the skid pipe used in the abbreviated form as the second heat insulating member, and such a structure may be adopted depending on the case. . Among these, the one shown in (a) is provided with ceramic fibers (7) on the outer periphery of the pipe body (1), and is further provided with a castable refractory (8) on the outer periphery, which is a heat insulating member (
9). A heat resistant protector (4) is provided around the outer periphery of this heat insulating member (9). Anchor studs 4 are provided in the circumferential direction of the pipe body (1). The hole shown in (b) is the pipe body (
1) A lath αυ is wrapped around the outer circumference of t′1. , a heat insulating member (9) is wrapped around the outer periphery of the ceramic fiber,
Furthermore, a heat-resistant protector (4) is provided around the outer periphery.
断熱部材(9)の取付状態の補強用にはビンQ4が設け
られている。また(c)に示されるものは、基本的には
(b)に示さ才りるものと同様であるが、断熱材の補強
用としてスタッドa3とビン(6)を設けたものでおる
。A bottle Q4 is provided for reinforcing the attached state of the heat insulating member (9). The one shown in (c) is basically the same as the one shown in (b), but a stud a3 and a bottle (6) are provided for reinforcing the heat insulating material.
第2図ないし第5図に示したような構造のスキッドパイ
プによ扛ば、気体冷却方式を適用した状態で第2の断熱
部材(5)が何らかの原因で脱落しても、第1の断熱部
材(3)が耐熱性プロテクタ(4)でパイプ本体に対し
て確実に保持されるため、上記脱落により耐熱性プロテ
クタ(4)の温度は上昇するが、スキツドノくイブ本体
(1)の温度上昇は小さく、従って強度的な支障は何ら
生じない。またこのように気体冷却が可能であることか
ら、冷却用の空気を燃焼用空気の一部として利用するこ
とにより、熱回収を効果的に行うことができる。If the skid pipe has a structure as shown in Figures 2 to 5, even if the second heat insulating member (5) falls off for some reason when the gas cooling method is applied, the first heat insulating member (5) Since the member (3) is securely held against the pipe body by the heat-resistant protector (4), the temperature of the heat-resistant protector (4) increases due to the falling off, but the temperature of the skid pipe body (1) does not increase. is small and therefore does not pose any serious problem. Furthermore, since gas cooling is possible in this way, heat recovery can be effectively performed by using cooling air as part of the combustion air.
第6図(a)及び(b)は本発明スキッドパイプを空気
冷却によシ使用した際の、各部温度の一例を示したもの
であり、冷却用空気の流速90rIL/S、雰囲気温度
1300℃の条件下において、(a)は正常時の温度分
布、(b)は第2の断熱部材脱落後の温度分布を示して
いる。こnによれば、(a)で示さ扛る正常時には、第
2の断熱部材(5)の表面温度T工:1296℃、耐熱
性プロテクタ(4)の表面温度T2ニア00℃、パイプ
本体温度T3:135℃、パイプ内気体温度T、:10
0℃である。一方、(b)に示される断熱部材脱落後の
場合には、炉内雰囲気に曝された耐熱性プロテクタ(4
)の表面温!T2が1280℃まで上昇するものの、パ
イプ本体温度T3: 200℃であり、第1図を参照し
ても判るようにパイプ本体の許容限界温度を十分に下回
る温度に保たれている。Figures 6 (a) and (b) show an example of the temperature of each part when the skid pipe of the present invention is used for air cooling, where the cooling air flow rate is 90 rIL/S and the ambient temperature is 1300°C. Under these conditions, (a) shows the temperature distribution under normal conditions, and (b) shows the temperature distribution after the second heat insulating member falls off. According to this, in the normal state shown in (a), the surface temperature of the second heat insulating member (5) T: 1296°C, the surface temperature of the heat-resistant protector (4) T2 near 00°C, and the pipe body temperature T3: 135℃, gas temperature inside the pipe T: 10
It is 0°C. On the other hand, in the case shown in (b) after the heat insulating member falls off, the heat resistant protector (4
) surface temperature! Although T2 rises to 1280°C, the pipe body temperature T3 is 200°C, and as can be seen from FIG. 1, the temperature is kept well below the allowable limit temperature of the pipe body.
以上述べた本発明のスキッドパイプによれば、パイプに
強度上の問題を生せしめることなく、気体冷却を行うこ
とが可能でラシ、このためスキッドからの熱損失を抑え
しかもその熱を有効に回収しつつ加熱炉の操業を行うこ
とができるという優扛た効果がある。According to the skid pipe of the present invention as described above, it is possible to perform gas cooling without causing any strength problems to the pipe, thereby suppressing heat loss from the skid and effectively recovering that heat. This has the elegant effect of allowing the heating furnace to be operated while
犯1図は従来のスキッドパイプの断熱部材脱落時におけ
る炉内雰囲気温度とバ、イブ本体温度との関係を示すも
のである。第2図ないし第4図は本発明tスキッドロン
グビームに適用した場合の一実施例を示すもので、第2
図は縦断面図、第3図は横断面図、第4図は切欠斜視図
である。第5図は本発明をスキッドポストビートに適用
した場合の一実施例を示す縦断面図である。第6図(a
)及び(b)は本発明スキッドパイプを空気冷却によシ
使用しL際の各部温度の一例を示すものである。第7図
(a)ないしくc)はそれぞれ第2の断熱部材を省略し
た構造のスキッドパイプを示す横断面図である。
図において、(1)はパイプ本体、(3)は第1の断熱
部材、(4)は耐熱性プロテクタ、(5)は第2の断熱
部材を各示す。
特許出願人 日本鋼管株式会社
発 明 者 佐 1) 哲 列間
多 1) 健同
秋 山 俊 −第4
図
−78−
第5図Figure 1 shows the relationship between the furnace atmosphere temperature and the temperature of the main body of a conventional skid pipe when the insulation member falls off. Figures 2 to 4 show an embodiment in which the present invention is applied to a skid long beam.
The figure is a longitudinal sectional view, FIG. 3 is a cross-sectional view, and FIG. 4 is a cutaway perspective view. FIG. 5 is a longitudinal sectional view showing an embodiment in which the present invention is applied to a skid post beat. Figure 6 (a
) and (b) show an example of the temperature of each part when the skid pipe of the present invention is used for air cooling. FIGS. 7(a) to 7(c) are cross-sectional views each showing a skid pipe having a structure in which the second heat insulating member is omitted. In the figure, (1) shows the pipe body, (3) the first heat insulating member, (4) the heat resistant protector, and (5) the second heat insulating member. Patent applicant Nippon Kokan Co., Ltd. Inventor Sa 1) Tetsu Reuma
1) Kendo Shun Akiyama - 4th
Figure-78- Figure 5
Claims (1)
該pxの断熱部材の外周に該断熱部材保持用の耐熱性プ
ロテクタを設け、該耐熱性プロテクタの外周に第2の断
熱部材を設けてなる鋼片加熱炉用スキッドパイプ。In addition to installing a gx insulation member around the outer circumference of the pipe body,
A skid pipe for a steel billet heating furnace, comprising a heat-resistant protector for holding the heat-insulating member provided on the outer periphery of the heat-insulating member of the px, and a second heat-insulating member provided on the outer periphery of the heat-resistant protector.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10573683A JPS59232215A (en) | 1983-06-15 | 1983-06-15 | Skid pipe for billet heating furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10573683A JPS59232215A (en) | 1983-06-15 | 1983-06-15 | Skid pipe for billet heating furnace |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59232215A true JPS59232215A (en) | 1984-12-27 |
Family
ID=14415559
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10573683A Pending JPS59232215A (en) | 1983-06-15 | 1983-06-15 | Skid pipe for billet heating furnace |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59232215A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS513606B1 (en) * | 1971-07-27 | 1976-02-04 |
-
1983
- 1983-06-15 JP JP10573683A patent/JPS59232215A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS513606B1 (en) * | 1971-07-27 | 1976-02-04 |
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