JPH08159456A - Door for heating furnace - Google Patents
Door for heating furnaceInfo
- Publication number
- JPH08159456A JPH08159456A JP29730294A JP29730294A JPH08159456A JP H08159456 A JPH08159456 A JP H08159456A JP 29730294 A JP29730294 A JP 29730294A JP 29730294 A JP29730294 A JP 29730294A JP H08159456 A JPH08159456 A JP H08159456A
- Authority
- JP
- Japan
- Prior art keywords
- door
- solid
- heating furnace
- refractories
- furnace
- 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
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、加熱炉用扉に関し、特
に、連鋳鋳片等鋼材を熱間で圧延し、厚板、条鋼等を製
造するに際して、該熱間圧延の実施前に鋼材を所定温度
にする連続式加熱炉の扉構造に係わる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door for a heating furnace, and more particularly, when a steel product such as a continuous cast slab is hot-rolled to produce a thick plate, a bar steel or the like, before carrying out the hot-rolling. It is related to the door structure of a continuous heating furnace that keeps a steel material at a predetermined temperature.
【0002】[0002]
【従来の技術】鋼材の熱間圧延、厚板圧延、条鋼圧延等
で用いられる連続式加熱炉は、図2に示すように、プッ
シャーとかチャージャーなる装入装置で前工程から搬送
されてきた鋼材1の冷片、温片、熱片を炉入口2から装
入し、ウォーキングビーム3にて炉抽出口4へ搬送する
間に、該鋼材1を所定温度に加熱、均熱している。2. Description of the Related Art As shown in FIG. 2, a continuous heating furnace used for hot rolling, thick plate rolling, strip rolling, etc. of steel is a steel that has been conveyed from the previous process by a charging device such as a pusher or a charger. While the cold piece, the hot piece and the hot piece of No. 1 are charged from the furnace inlet 2 and conveyed to the furnace extraction port 4 by the walking beam 3, the steel material 1 is heated to a predetermined temperature and soaked.
【0003】ところで、この連続式加熱炉の扉5は、通
常、外気側が鉄製で炉内側の全面を耐火物で構成し、該
外気側の鉄皮は冷却水配管をそわせて水冷する構造であ
る。そして、該扉5に内張されている耐火物には、以前
は固形式耐火物(キャスタブル等)が使用されていた
が、近年は扉5の軽量化あるいは断熱性向上のため、セ
ラミックファイバが利用されている。図3に、代表的な
所謂セラミックファイバ方式扉の耐火物構造を示す。By the way, the door 5 of this continuous heating furnace is usually made of iron on the outside air side, and the entire inside of the furnace is made of a refractory, and the iron shell on the outside air side is cooled by cooling water piping. is there. For the refractory material lined in the door 5, a solid refractory material (such as castable) was used before, but in recent years, in order to reduce the weight of the door 5 or improve the heat insulating property, a ceramic fiber is used. It's being used. FIG. 3 shows a typical refractory structure of a so-called ceramic fiber type door.
【0004】[0004]
【発明が解決しようとする課題】上記セラミックファイ
バ方式の扉は、確かに軽量化、断熱性改善には非常に効
果があり、最近ではほとんどの炉がこの方式の扉を使用
するようになった。しかしながら、図3の方式の扉5を
長期間使用すると、図4に示すように、該扉5は、その
内外温度差に起因して、炉内側に向けて変形してくるこ
とが判明した。そして、この変形が大きくなるにつれ、
該扉5の開閉時に扉外周枠10に張った固形耐火物6が
加熱炉入口2の所謂リンテル7(炉開口の上方に水平に
渡してある部材)及び炉端壁8と、図5(a)及び5
(b)の如く、接触し干渉し合うようになった。そのた
め、該扉5を吊っているチェーン9及び上記リンテル7
に多大な衝撃が作用し、リンテル7耐火物の脱落とかチ
ェーン9の切損を頻繁に招くことになっり、円滑な加熱
作業に支障が生じていた。The above-mentioned ceramic fiber type door is certainly very effective in reducing the weight and improving the heat insulating property, and recently, most furnaces use this type of door. . However, when the door 5 of the system of FIG. 3 is used for a long period of time, it has been found that the door 5 is deformed toward the inside of the furnace due to the temperature difference between the inside and outside thereof, as shown in FIG. And as this deformation grows,
A solid refractory material 6 stretched on the outer peripheral frame 10 when the door 5 is opened and closed is a so-called linter 7 (a member horizontally extending above the furnace opening) of the heating furnace inlet 2 and a furnace end wall 8, and FIG. And 5
As shown in (b), they come into contact with each other and interfere with each other. Therefore, the chain 9 that suspends the door 5 and the lintel 7 are
As a result, a large impact is applied to the refractory, which often causes the refractory of the Lintel 7 to fall off or the chain 9 to be cut off, which hinders smooth heating work.
【0005】そこで、本発明は、かかる事情を鑑み、内
面の大部分がセラミックファイバ方式であっても昇降に
支障を起こさない加熱炉用扉を提供することを目的とし
ている。Therefore, in view of the above situation, an object of the present invention is to provide a heating furnace door which does not hinder the vertical movement even if most of the inner surface is a ceramic fiber type.
【0006】[0006]
【課題を解決するための手段】発明者は、上記目的を達
成するため、セラミックファイバ方式扉の欠点を鋭意見
直し、本発明を想案するに至った。すなわち、本発明
は、加熱炉の被加熱材装入口を覆い、セラミックファイ
バ断熱層を内張した昇降扉において、上記昇降扉の周囲
枠内側を固形式耐火物にすることに加え、中央部上下方
向に少なくとも1列以上の固形式耐火物を配設したこと
を特徴とする加熱炉用扉である。また、本発明は、上記
固形式耐火物が、キャスタブル耐火物、プラスチック耐
火物及び耐火レンガから1種類選択したものであること
を特徴とする加熱炉用扉でもある。In order to achieve the above object, the inventor diligently reviewed the defects of the ceramic fiber type door, and came up with the present invention. That is, the present invention is a lift door that covers a heated material inlet of a heating furnace and is lined with a ceramic fiber heat insulating layer. It is a door for a heating furnace in which at least one row of solid refractories is arranged in the direction. Further, the present invention is also a door for a heating furnace, wherein the solid refractory material is one kind selected from castable refractory material, plastic refractory material and refractory brick.
【0007】この場合、固形式耐火物とは、セラミック
ファイバ断熱材のように、繊維状の原材料を積層して製
作されたものではなく、粉粒状の原材料を所定量配合
し、混練し、施工後に固まる耐火物、あるいはレンガの
ように施工前から定形を有し固まっている耐火物を言
う。In this case, the solid refractory material is not one produced by laminating fibrous raw materials like a ceramic fiber heat insulating material, but a predetermined amount of powdery raw materials is mixed, kneaded and worked. Refractory that hardens afterwards, or refractory that has a fixed shape and hardens before construction, such as brick.
【0008】[0008]
【作用】本発明では、加熱炉の被加熱材装入口を覆い、
セラミックファイバ断熱層を内張した昇降扉において、
上記昇降扉の周囲枠内側を固形式耐火物にすることに加
え、中央部上下方向に少なくとも1列以上の固形式耐火
物を配設するようにしたので、上記昇降扉が、その内外
温度差に起因した炉内側に向けての変形が起きようとし
ても、新たに設けた固形耐火物によってその変形が抑制
されるようになる。その結果、該昇降扉の開閉時に扉外
周枠に張った固形耐火物が加熱炉入口の所謂リンテル
や、炉端壁に接触することがなくなり、上記リンテル耐
火物の脱落とかチェーンの切損がなくなる。また、本発
明では、上記固形式耐火物がキャスタブル耐火物、プラ
スチック耐火物、及び耐火レンガから1種類選択したも
のであるので、ほぼ従来通りの製造コストで上記効果を
確実に達成でき、鋼材の円滑な加熱が行えるようになっ
た。以下、図1に基づき、本発明の内容を具体的に説明
する。In the present invention, the heating material charging port of the heating furnace is covered,
In the lift door lined with a ceramic fiber heat insulation layer,
In addition to the solid refractory inside the surrounding frame of the lift door, at least one row of solid refractory is arranged in the vertical direction of the central portion, so that the lift door has a difference in temperature inside and outside thereof. Even if the deformation toward the inside of the furnace due to the above occurs, the deformation is suppressed by the newly provided solid refractory material. As a result, when the elevator door is opened and closed, the solid refractory material stretched around the door outer frame does not come into contact with the so-called lintel at the furnace entrance or the furnace end wall, and the lintel refractory material does not fall off or the chain is broken. Further, in the present invention, since the solid refractory material is one kind selected from castable refractory material, plastic refractory material, and refractory brick, it is possible to reliably achieve the above effect at almost the same manufacturing cost as that of the steel material. Smooth heating became possible. Hereinafter, the content of the present invention will be specifically described with reference to FIG.
【0009】[0009]
【実施例】本発明に係る加熱炉用扉の構造を図1に示
す。図1で明らかなように、本発明では、扉5の周囲枠
10以外の面の一部(ほぼ、正面から見て中央部近傍)
にセラミックファイバ11に換え、上下方向に固形耐火
物6を2列に配設してある。その配設は、この実施例で
は鉄皮内側の所定位置にアンカ12を多数本溶接し、そ
の上に混練されたキャスタブル耐火材の塊状物をスタン
プすることで行った。しかし、本発明では、配設方法は
考えられるいかなる方法を採用しても良い。また、本実
施例では、その固形耐火物6は、扉5内面のほぼ中央近
傍に2列に配置してあるが、その本数は扉5のサイズに
より1列あるいは3列以上として良い。つまり、該固形
耐火物6の幅や間隔は、扉5が受ける面圧にて決定され
るものであり、例えば図1の横6.5m、縦2.3mの
扉では幅0.3mで、2列の間隔は900mmであっ
た。そして、この扉構造の改良によって、図1の扉は、
約10年間はまったく補修なしで使用できると予想で
き、、勿論その間に扉5の外周枠10が所謂リンケル7
や炉端壁8と衝突するトラブルは皆無である。EXAMPLE A structure of a heating furnace door according to the present invention is shown in FIG. As is apparent from FIG. 1, in the present invention, a part of the surface of the door 5 other than the peripheral frame 10 (almost in the vicinity of the central portion when viewed from the front).
In place of the ceramic fiber 11, the solid refractory 6 is arranged in two rows in the vertical direction. In this embodiment, a large number of anchors 12 are welded to a predetermined position inside the steel shell, and the kneaded castable refractory material is stamped on the anchors. However, in the present invention, any conceivable arrangement method may be adopted. Further, in this embodiment, the solid refractories 6 are arranged in two rows near the center of the inner surface of the door 5, but the number may be one row or three rows or more depending on the size of the door 5. That is, the width and interval of the solid refractory material 6 are determined by the surface pressure that the door 5 receives. For example, in the case of a door having a width of 6.5 m and a length of 2.3 m in FIG. The distance between the two rows was 900 mm. And by the improvement of this door structure, the door of FIG.
It can be expected that it can be used without any repairs for about 10 years, and of course the outer frame 10 of the door 5 is the so-called Linkel 7 during that time.
There is no trouble of colliding with the furnace end wall 8.
【0010】なお、以上の説明はすべて被加熱物を鋼材
1とする加熱炉で行ったが、本発明に係る扉5を適用す
る加熱炉が鋼材1を対象とするものに限らないことは言
うまでもない。It should be noted that although all of the above explanations have been made in the heating furnace in which the object to be heated is the steel material 1, it goes without saying that the heating furnace in which the door 5 according to the present invention is applied is not limited to the steel material 1. Yes.
【0011】[0011]
【発明の効果】以上述べたように、本発明により、セラ
ミックファイバー式扉を有する加熱炉であっても、その
扉が、開閉時に炉入口の所謂リンケルや炉端壁との接触
が防止でき、チェーンの切損等のトラブル発生が解消さ
れた。その結果、加熱作業が途中で中断されることがな
く、厚板、条鋼等の生産が円滑に効率良く行えるように
なる。As described above, according to the present invention, even in a heating furnace having a ceramic fiber type door, the door can prevent contact with the so-called linkel of the furnace inlet and the furnace end wall when opening and closing, and the chain. Trouble such as cutting loss was solved. As a result, the heating operation is not interrupted on the way, and the production of thick plates, bar steel and the like can be performed smoothly and efficiently.
【図1】本発明に係る加熱炉用扉を示す図であり、
(a)は扉正面の裏側、(b)は(a)のA−A矢視断
面、(c)は(a)の縦断面である。FIG. 1 is a view showing a door for a heating furnace according to the present invention,
(A) is the back side of the front surface of the door, (b) is a cross section taken along the line AA of (a), and (c) is a vertical cross section of (a).
【図2】連続式加熱炉の縦断面図である。FIG. 2 is a vertical cross-sectional view of a continuous heating furnace.
【図3】従来のセラミックファイバを内張した扉を示す
図であり、(a)は扉正面の裏側、(b)は(a)のA
−A矢視断面、(c)は(a)の縦断面である。3A and 3B are diagrams showing a conventional ceramic fiber-lined door, in which (a) is the back side of the front of the door, and (b) is A of (a).
-A arrow cross section, (c) is a vertical cross section of (a).
【図4】従来の扉の変形状況を示す模式図である。FIG. 4 is a schematic view showing a deformation state of a conventional door.
【図5】従来の扉の問題点を示す模式図であり、(a)
は扉上昇時、(b)は扉下降時を示す。FIG. 5 is a schematic view showing a problem of a conventional door, (a)
Shows the door rising, and (b) shows the door descending.
1 鋼材 2 炉入口 3 ウオーキングビーム 4 炉抽出口 5 扉 6 固形耐火物 7 リンテル 8 炉端壁 9 チェーン 10 周囲枠 11 セラミックファイバ 12 アンカ 13 鉄製外皮 14 水冷用パイプ 1 Steel Material 2 Furnace Inlet 3 Walking Beam 4 Furnace Extraction Port 5 Door 6 Solid Refractory 7 Lintel 8 Furnace End Wall 9 Chain 10 Surrounding Frame 11 Ceramic Fiber 12 Anchor 13 Iron Outer Shell 14 Water Cooling Pipe
Claims (2)
ックファイバ断熱層を内張した昇降扉において、 上記昇降扉の周囲枠内側を固形式耐火物にすることに加
え、その中央部上下方向に少なくとも1列以上の固形式
耐火物を配設したことを特徴とする加熱炉用扉。1. An elevating door which covers a heating material inlet of a heating furnace and is lined with a ceramic fiber heat insulation layer, wherein a solid refractory is provided on the inside of a peripheral frame of the elevating door, and a central upper and lower parts thereof are provided. A door for a heating furnace in which at least one row of solid refractories is arranged in the direction.
物、プラスチック耐火物、及び耐火レンガから1種類選
択したものであることを特徴とする請求項1記載の加熱
炉用扉。2. The heating furnace door according to claim 1, wherein the solid refractory material is one of castable refractory material, plastic refractory material, and refractory brick.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6297302A JP2986695B2 (en) | 1994-11-30 | 1994-11-30 | Heating furnace door |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6297302A JP2986695B2 (en) | 1994-11-30 | 1994-11-30 | Heating furnace door |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08159456A true JPH08159456A (en) | 1996-06-21 |
JP2986695B2 JP2986695B2 (en) | 1999-12-06 |
Family
ID=17844758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6297302A Expired - Fee Related JP2986695B2 (en) | 1994-11-30 | 1994-11-30 | Heating furnace door |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2986695B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013545067A (en) * | 2010-11-02 | 2013-12-19 | シュヴァルツ,エーファ | Multi-deck chamber heat treatment furnace |
CN105953261A (en) * | 2016-06-24 | 2016-09-21 | 江苏太湖锅炉股份有限公司 | Composite type furnace door structure of waste heat boiler |
-
1994
- 1994-11-30 JP JP6297302A patent/JP2986695B2/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013545067A (en) * | 2010-11-02 | 2013-12-19 | シュヴァルツ,エーファ | Multi-deck chamber heat treatment furnace |
CN105953261A (en) * | 2016-06-24 | 2016-09-21 | 江苏太湖锅炉股份有限公司 | Composite type furnace door structure of waste heat boiler |
CN105953261B (en) * | 2016-06-24 | 2018-02-27 | 江苏太湖锅炉股份有限公司 | The compound door structure of waste heat boiler |
Also Published As
Publication number | Publication date |
---|---|
JP2986695B2 (en) | 1999-12-06 |
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