JPH0646141B2 - Furnace wall structure - Google Patents
Furnace wall structureInfo
- Publication number
- JPH0646141B2 JPH0646141B2 JP61239146A JP23914686A JPH0646141B2 JP H0646141 B2 JPH0646141 B2 JP H0646141B2 JP 61239146 A JP61239146 A JP 61239146A JP 23914686 A JP23914686 A JP 23914686A JP H0646141 B2 JPH0646141 B2 JP H0646141B2
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- heat
- sealing material
- wall structure
- furnace wall
- 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 - Lifetime
Links
- 239000003566 sealing material Substances 0.000 claims description 23
- 239000002245 particle Substances 0.000 claims description 19
- 239000003779 heat-resistant material Substances 0.000 claims description 15
- 239000011810 insulating material Substances 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- 239000000835 fiber Substances 0.000 description 11
- 239000000919 ceramic Substances 0.000 description 10
- 229910004298 SiO 2 Inorganic materials 0.000 description 9
- 239000010935 stainless steel Substances 0.000 description 9
- 229910001220 stainless steel Inorganic materials 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 6
- 239000011449 brick Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- 239000010936 titanium Substances 0.000 description 5
- 229910052719 titanium Inorganic materials 0.000 description 5
- 238000000137 annealing Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000010960 cold rolled steel Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 240000007643 Phytolacca americana Species 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、炉壁断熱材から発生する固型物粒子の炉内
漏出を防止する炉壁構造に関する。Description: TECHNICAL FIELD The present invention relates to a furnace wall structure that prevents solid particles generated from a furnace wall heat insulating material from leaking into the furnace.
従来は連続焼鈍炉等の焼鈍炉や熱処理炉等の炉壁材質に
耐火断熱レンガを使用していた。Conventionally, refractory insulation bricks have been used for furnace wall materials such as annealing furnaces such as continuous annealing furnaces and heat treatment furnaces.
しかし耐火断熱レンガでは次の２つの理由で使用上問題
があつた。However, fireproof insulation bricks have problems in use for the following two reasons.
レンガの表面からレンガ屑が発生し、炉内で浮遊す
る。すると浮遊した細かい屑がロールとストリツプ間に
て挟圧されストリツプの押し疵となる。Brick scraps are generated from the surface of the brick and float in the furnace. Then, the suspended fine dust is pinched between the roll and the strip and becomes a push flaw of the strip.
レンガは昇熱、降温時の炉温追従応答性が悪いのでHe
at cycleの変更時、サイズ変更時等の炉壁昇熱又は冷却
に時間を要する。Brick has poor response to furnace temperature when heating and cooling, so He
It takes time to heat or cool the furnace wall when changing the at cycle or changing the size.
従つて近年はレンガの使用をやめセラミツクフアイバ
（Ceramic Fiber）を使用し炉内側にステンレス板を張
り付ける炉が多くなつた。Therefore, in recent years, the use of bricks has stopped, and there are many furnaces that use a ceramic fiber to attach a stainless steel plate to the inside of the furnace.
しかし、この場合はステンレス板とステンレス板との接
ぎ目をボルト等でとめているため、炉温を７００℃以上
あげるとステンレス板が熱膨張し、ボルト間のとめてな
い部分がふくれあがりセラミツクフアイバを完全に密閉
する事が難しい。However, in this case, the joints between the stainless steel plates are fastened with bolts, so if the furnace temperature is raised above 700 ° C, the stainless steel plates will thermally expand and the unfixed parts between the bolts will bulge and the ceramic fiber It is difficult to completely seal it.
溶接はステンレスの板の厚みが１mm前後と薄い為に非常
に難しく、たとえ溶接が可能であつたとしても炉高１５
ｍの熱膨張量を構造上吸収する事は困難である。Welding is extremely difficult because the thickness of the stainless steel plate is about 1 mm, and even if welding is possible, the furnace height is 15
It is difficult to absorb the thermal expansion amount of m structurally.
このようにセラミツクフアイバを完全に密閉できないと
次のような問題が生じる。セラミツクフアイバには重量
比で３５〜６５％のＡ２Ｏ３とＳｉＯ２が含まれてい
る。これらは１５０μｍ〜５００μｍφ粒径の固い固型
物粒子でフアイバ中より容易に剥落しステンレス板の接
ぎ目から炉内に漏出してくる。炉内に漏出した固いＡ
２Ｏ３およびＳｉＯ２の粒子は炉内に浮遊し、炉内ロー
ルと鋼帯間に挟圧される等して鋼帯に押し疵を与え、自
動車のボデイー用外板等表面性状の精度が要求される製
品には適さなくなる。If the ceramic fiber cannot be completely sealed in this way, the following problems occur. The ceramic fiber contains 35 to 65% by weight of A 2 O 3 and SiO 2 . These are hard solid particles having a particle diameter of 150 μm to 500 μm and are easily peeled off from the fiber, and leak out into the furnace through the joint of the stainless steel plate. Hard A leaked into the furnace
The particles of 2 O 3 and SiO 2 float in the furnace and are pressed against the steel strip by being pinched between the inner roll and the steel strip. It will not be suitable for the required product.
本発明は以上のような問題に鑑み創案されたもので、焼
鈍、熱処理等の各種炉で、高品質の熱延鋼板、冷延鋼
板、ブリキ原板、溶融亜鉛鍍金鋼板、溶融アルミ鍍金鋼
板、ステンレス鋼板、電磁鋼板等の鋼板を製造するため
に、固型物粒子を生じるセラミツクフアイバ等を使用し
た炉壁構造を改良せんとするものである。The present invention was devised in view of the above problems, in various furnaces such as annealing and heat treatment, high-quality hot-rolled steel sheet, cold-rolled steel sheet, tin plate, molten zinc plated steel sheet, molten aluminum plated steel sheet, stainless steel. In order to produce a steel sheet such as a steel sheet and an electromagnetic steel sheet, a furnace wall structure using a ceramic fiber or the like which produces solid particles is improved.
そのため、本発明は第１図に示すように、炉殻(1)内側
に耐火断熱材(2)を設け、該耐火断熱材(2)の全面を薄い
シール材(3)で覆うと共に、該シール材(3)とクリアラン
スを保った状態でその炉内側全面に耐熱材(4)を展着せ
しめている。Therefore, in the present invention, as shown in FIG. 1, a fireproof heat insulating material (2) is provided inside the furnace shell (1), and the entire surface of the fireproof heat insulating material (2) is covered with a thin seal material (3), A heat resistant material (4) is spread on the entire inner surface of the furnace while maintaining a clearance with the sealing material (3).
そのうち耐火断熱材(2)は耐火・断熱性があり、熱膨張
率が低いことが必要であり、又炉殻軽量化のため軽量で
あつて安価なことが好ましい。このため前述したセラミ
ックファイバ等の固型物粒子をその構成の一部に含むも
のが用いられるが、その中でも特にＣ，Ｓｉ，Ｎｂ，
Ｎ，Ｚｎ，Ａ系のセラミツクフアイバやその複合フア
イバが良い。Among them, the fireproof heat insulating material (2) is required to have fireproof / heat insulating properties and a low coefficient of thermal expansion, and it is preferable that it is lightweight and inexpensive in order to reduce the weight of the furnace shell. For this reason, those containing solid particles such as the above-mentioned ceramic fibers as a part of the constitution are used. Among them, C, Si, Nb,
N, Zn, and A type ceramic fibers or composite fibers thereof are preferable.
前記シール材(3)は、耐火断熱材(2)から生じる固型物粒
子が炉内に漏出しないよう気密性があり、且つ異物の発
生がないことが絶体条件である。又耐熱性があり、熱膨
張率が低いことも必要であり、その材質としてはチタ
ン、ＳＵＳ鋼、耐熱鋼（例えばＮｉ：３０〜４０％又は
Ｃｕ：３０〜４０％）等の金属板、フオイル、耐熱シー
トが適用され得るが、他に耐熱シートとして、無機質の
クロス材等、玉状の異物の発生しないセラミツク布、常
温等でフアイバに製造したサフイール（商品名）、デン
カアルセン（商品名）等がある。更に前記耐火断熱材
(2)と耐熱材(4)の間に介装されるため、シール材(3)と
しては、軽く、施工性が良いこと（金属板、フオイルで
あれば１０〜３００μｍの厚さ程度）及び広幅のものが
手入しやすく、継目の施工が容易なこと（耐熱接着材、
溶接ホツチキス止め等で継目の施工ができる）等が必要
である。The sealing material (3) must be airtight so that solid particles generated from the refractory heat insulating material (2) do not leak into the furnace, and it is an absolute condition that no foreign matter is generated. It is also required to have heat resistance and a low coefficient of thermal expansion, and the material thereof is a metal plate such as titanium, SUS steel, heat resistant steel (for example, Ni: 30 to 40% or Cu: 30 to 40%), and fooil. , Heat resistant sheets can be applied, but as other heat resistant sheets, inorganic cloth materials, ceramic cloth that does not generate ball-shaped foreign substances, Safir (trade name) and Denka Arcen (trade name) manufactured in fiber at normal temperature Etc. Furthermore, the refractory insulation
Since it is interposed between (2) and the heat-resistant material (4), it is light as the sealing material (3) and has good workability (a metal plate or fooil has a thickness of about 10 to 300 μm) and Wide ones are easy to maintain and seams are easy to install (heat resistant adhesive,
Welding staples can be used to join seams).
又前記耐熱材(4)は、当然ながら、炉内から輻射熱、対
流熱等を受けるので耐熱性のあること、及び元々粒子等
の炉内漏出による製品表面欠陥の発生を防ぐ目的から、
異物が発生しないことが必要である。更に炉殻(1)との
間に耐火断熱材(2)、シール材(3)を入れ、本耐熱材(4)
で保持するので、保持具の取り付けに耐え得る剛性も必
要とされる。このようなことから、その材質としては、
耐熱金属、ＳＵＳ鋼等が適切である。Further, the heat-resistant material (4) is naturally heat-resistant because it receives radiant heat, convective heat, etc. from the inside of the furnace, and originally for the purpose of preventing the occurrence of product surface defects due to leakage of particles into the furnace,
It is necessary that no foreign matter is generated. In addition, a fireproof heat insulating material (2) and a sealing material (3) are inserted between the furnace shell (1) and the heat resistant material (4).
Since it is held in place, it is also necessary to have rigidity that can withstand the attachment of the holder. From this, as the material,
Heat resistant metal, SUS steel, etc. are suitable.
以上のような炉壁構造によれば、シール材(3)が耐火断
熱材(2)に含まれるＡ２Ｏ３やＳｉＯ２等の固型物粒
子の炉内への移動を阻止すること及びシール材(3)と耐
熱材(4)間に設けられたクリアランスにより該シール材
(3)の熱膨張による波形の浮き上がりや耐熱材(4)の熱膨
張を吸収でき、各々の熱膨張や相互の熱膨張によりそれ
らの破損を招かないようにできるため、耐熱材(4)の熱
膨張によりふくれあがつた部分からこれらの粒子が炉内
に漏出することがなくなる。According to the furnace wall structure as described above, the sealing material (3) prevents movement of solid particles such as A 2 O 3 and SiO 2 contained in the fireproof heat insulating material (2) into the furnace, and Due to the clearance provided between the seal material (3) and the heat resistant material (4)
The rising of the waveform due to the thermal expansion of (3) and the thermal expansion of the heat resistant material (4) can be absorbed, and it is possible to prevent them from being damaged by each thermal expansion or mutual thermal expansion. The thermal expansion prevents these particles from leaking into the furnace from the blisters.
以下、本発明の具体的実施例を図面に基づいて説明す
る。Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
第２図及び第３図は冷延鋼板用連続焼鈍炉の加熱炉の炉
壁構造を示す部分断面外形斜視図及び縦断面図である。
上記加熱炉は、炉温max９５０℃、板温max８５０℃、炉
内幅２２００mm、炉内高１８ｍ、炉内長２３ｍの炉条件
を有しており、そのような加熱炉の炉壁構造として、ス
チール製の炉殻(10)で囲われた内側に介装された耐火断
熱材(20)と、その内側全表面を覆うシール材(30)と、該
シール材(30)の内側に所定のクリアランスを開けて取付
けた板状耐熱材(40)とを有している。FIG. 2 and FIG. 3 are a partial sectional outline perspective view and a vertical sectional view showing a furnace wall structure of a heating furnace of a continuous annealing furnace for cold rolled steel sheets.
The above heating furnace has furnace conditions of a furnace temperature of max 950 ° C., a plate temperature of max 850 ° C., a furnace inner width of 2200 mm, a furnace inner height of 18 m, and a furnace inner length of 23 m. Fireproof heat insulating material (20) interposed inside the furnace shell (10) made of steel, a sealing material (30) covering the entire inner surface, and a predetermined clearance inside the sealing material (30) It has a plate-shaped heat-resistant material (40) opened and attached.
このうち、耐火断熱材(20)はＡ２Ｏ３とＳｉＯ２より
なるセラミツクフアイバで構成され、その中には固体粒
径が１５０〜５００μｍのＡ２Ｏ３及びＳｉＯ２の粒
子が重量比で２５〜４０％含まれている。Among them, a refractory heat-insulating material (20) consists of ceramic poke full multiplexing consisting A 2 O 3 and SiO 2, the solid particle size therein is A 2 O 3 and SiO 2 particles 150~500μm a weight ratio 25-40% is included.
又、シール材(30)は、セラミツクフアイバからなる前記
耐火断熱材(20)からＡ２Ｏ３及びＳｉＯ２の粒子が炉
内に漏出しないようにするため、１００μｍ厚のチタン
フオイルを使用している。Further, the sealing material (30) is made of 100 μm thick titanium oil so as to prevent particles of A 2 O 3 and SiO 2 from leaking into the furnace from the refractory heat insulating material (20) made of ceramic fiber. ing.
更に、板状耐熱材(40)はステンレス板からなる。この板
状耐熱材(40)はもともと鋼帯が炉内走行中に蛇行して該
鋼帯端部で傷付き破損する場合や炉内点検作業中等に傷
付く場合に備えて設けられたものであるから、本発明の
場合も前記シール材(30)の上に張り付けておいてそのよ
うな場合に備えると共に、該シール材(30)の保護も兼ね
る。そのためその板厚としては１mm程度のものが必要で
ある。又シール材(30)がチタンフオイルの場合、１００
μｍ以下のフオイルであれば炉壁全面を覆つても、熱膨
張代は波形に浮上つて吸収される。従つて耐火断熱材(2
0)とこの板状耐熱材(40)間の間隔につき、シール材(30)
厚みに最大熱膨張代の波高さ分を考慮すれば熱膨張によ
る該シール材(30)の破損等の問題は解決できる。本実施
例では、シール材(30)が熱膨張して波形に盛上る許容値
を考え、その間に２〜４mmのクリアランスを設けてい
る。更にシール材(30)が仮りに破損しても耐火断熱材(2
0)から発生するＡ２Ｏ３及びＳｉＯ２の粒子が炉内に
漏出することを防ぐため、板状耐熱材(40)は各板を重ね
合せ、ステンレス板用取付ボルト(41)で２００〜４００
mmピッチの間隔で締付けている。Further, the plate heat resistant material (40) is made of a stainless plate. This plate-shaped heat-resistant material (40) was originally provided in case the steel strip meanders while running in the furnace and is scratched and damaged at the end of the steel strip, or when it is scratched during inspection work in the furnace. Therefore, also in the case of the present invention, the sealing material (30) is stuck on the sealing material (30) to prepare for such a case, and also serves to protect the sealing material (30). Therefore, the plate thickness is required to be about 1 mm. If the sealing material (30) is titanium oil, 100
If it is less than μm, even if it covers the entire surface of the furnace wall, the thermal expansion margin floats in a waveform and is absorbed. Therefore, fireproof insulation (2
0) and this plate-shaped heat-resistant material (40), the sealing material (30)
If the wave height of the maximum thermal expansion margin is taken into consideration in the thickness, problems such as damage of the sealing material (30) due to thermal expansion can be solved. In this embodiment, considering the allowable value that the sealing material (30) thermally expands and rises in a waveform, a clearance of 2 to 4 mm is provided between them. Furthermore, even if the seal material (30) is damaged, the fireproof insulation (2
In order to prevent the particles of A 2 O 3 and SiO 2 generated from (0) from leaking into the furnace, the plate-shaped heat-resistant materials (40) are stacked on top of each other, and the mounting bolts (41) for stainless steel plate 400
Tightened at intervals of mm pitch.
以上の炉壁構造では長期間使用しても、耐火断熱材(20)
から発生したＡ２Ｏ３及びＳｉＯ２の固型物粒子がシ
ール材(30)により遮断されて、炉内に漏出してくること
がなかつた。With the above furnace wall structure, fireproof insulation (20)
The solid particles of A 2 O 3 and SiO 2 generated from the above were blocked by the sealing material (30) and did not leak into the furnace.
又、本実施例では、シール材(30)としてチタンフオイル
を使用したが、ステンレスフオイルを使用しても同様な
結果が得られた。チタンは線膨張系数が8.5×１０−６
／deg℃mm、ステンレスは１１×１０−６／deg℃mmでチ
タンの方が熱膨張対策としてはステンレスより有利であ
るが、価格が高いのでステンレスフオイルを使用するこ
とが実際的であろう。Further, in the present embodiment, titanium foil was used as the sealing material (30), but similar results were obtained even if stainless foil was used. Titanium has a linear expansion coefficient of 8.5 × 10 −6
/ Deg ℃ mm, stainless steel is 11 × 10 -6 / deg ℃ mm, and titanium is more advantageous than stainless steel as a measure against thermal expansion, but it is practical to use stainless oil because it is expensive. .
以上説明した本発明の炉壁構造によれば、Ａ２Ｏ３と
ＳｉＯ２等の固型物粒子を発生する耐火断熱材と耐熱材
との間にシール材や耐熱材の熱膨張代を開けた上で該シ
ール材を介装せしめたので、上記シール材自身の破損も
ほとんどなく且つ該シール材によって固型物粒子が炉内
に漏出することがなくなり、従つて製品の表面性状を良
好に保つことができるという優れた効果を有している。According to the furnace wall structure of the present invention described above, the thermal expansion margin of the sealant or the heat-resistant material is opened between the heat-resistant heat-resistant material and the heat-resistant heat-insulating material that generate solid particles such as A 2 O 3 and SiO 2. Since the sealing material is interposed on the top surface, the sealing material itself is hardly damaged, and the solid material particles are prevented from leaking into the furnace by the sealing material. Therefore, the surface quality of the product is improved. It has an excellent effect that it can be maintained.
第１図は本発明の炉壁構造の構成を示す縦断面図、第２
図は本発明の一実施例を示す加熱炉炉壁構造の部分断面
外形斜視図、第３図はその縦断面図である。 図中、(1)(10)は炉殻、(2)(20)は耐火断熱材、(3)(30)
はシール材、(4)(40)は耐熱材を各示す。FIG. 1 is a vertical cross-sectional view showing the structure of the furnace wall structure of the present invention,
FIG. 3 is a partial cross-sectional outline perspective view of a furnace wall structure of a heating furnace showing an embodiment of the present invention, and FIG. 3 is a vertical cross-sectional view thereof. In the figure, (1) and (10) are furnace shells, (2) and (20) are refractory insulation materials, and (3) and (30).
Indicates a sealing material, and (4) and (40) indicate heat resistant materials.
Claims (1)
含む耐火断熱材を設け、該耐火断熱材の炉内側の全面を
前記固型物粒子の飛散防止用のシール材で覆い、該シー
ル材とクリアランスを保った状態で耐熱材を炉内側全面
に展着せしめたことを特徴とする炉壁構造。1. A refractory heat-insulating material containing solid particles as a part of its constitution is provided inside the furnace shell, and the entire surface of the inside of the furnace of the refractory heat insulating material is a sealing material for preventing scattering of the solid particles. A furnace wall structure characterized in that a heat-resistant material is spread over the entire inner surface of the furnace in a state of covering and maintaining a clearance with the sealing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61239146A JPH0646141B2 (en) | 1986-10-09 | 1986-10-09 | Furnace wall structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61239146A JPH0646141B2 (en) | 1986-10-09 | 1986-10-09 | Furnace wall structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6396485A JPS6396485A (en) | 1988-04-27 |
| JPH0646141B2 true JPH0646141B2 (en) | 1994-06-15 |
Family
ID=17040438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61239146A Expired - Lifetime JPH0646141B2 (en) | 1986-10-09 | 1986-10-09 | Furnace wall structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0646141B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4841506B2 (en) * | 2007-06-11 | 2011-12-21 | 東邦チタニウム株式会社 | Method for producing metal oxide |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5310911Y2 (en) * | 1971-08-05 | 1978-03-24 |
-
1986
- 1986-10-09 JP JP61239146A patent/JPH0646141B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6396485A (en) | 1988-04-27 |
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