JP2013174369A - Continuous annealing furnace - Google Patents

Continuous annealing furnace Download PDF

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JP2013174369A
JP2013174369A JP2012037750A JP2012037750A JP2013174369A JP 2013174369 A JP2013174369 A JP 2013174369A JP 2012037750 A JP2012037750 A JP 2012037750A JP 2012037750 A JP2012037750 A JP 2012037750A JP 2013174369 A JP2013174369 A JP 2013174369A
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amorphous
ceramic fiber
crystalline
fiber material
continuous annealing
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JP5889670B2 (en
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Koichi Matsuo
幸一 松尾
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Nippon Steel Engineering Co Ltd
Nippon Steel Plant Designing Corp
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NS Plant Designing Corp
Nippon Steel and Sumikin Engineering Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a low-cost continuous annealing furnace capable of easily preventing scattering and exposure of shots from an amorphous ceramic fiber material provided on an inner surface of a furnace body.SOLUTION: A continuous annealing furnace includes: an amorphous CF material 2 provided on an inner surface of furnace body hardware 1; a crystalline CF material 3 covering a surface of the amorphous CF material 2; a metallic mesh 4 arranged on a surface of the crystalline CF material 3; and a rotation type stud pin 5 protrusively provided on the inner surface of the furnace body hardware 1, and penetrating the amorphous CF material 2, the crystalline CF material 3 and the metallic mesh 4 to fix the amorphous CF material 2, the crystalline CF material 3 and the metallic mesh 4.

Description

本発明は、連続的に鋼板を焼鈍する連続焼鈍炉に関する。   The present invention relates to a continuous annealing furnace that continuously anneals steel sheets.

連続焼鈍炉の炉体の内面には断熱のためにライニング材が設けられている。従来、連続焼鈍炉のライニング材としては、綿状の耐熱繊維材である非晶質セラミックファイバー材が用いられている。しかしながら、この非晶質セラミックファイバー材にはショット（粉末）が含まれているため、ショットの飛散および露出の防止を目的として、図５に示すように多数の矩形の金属板１０によってライニング材１１の炉内側表面全面を覆い、金属板１０を炉体１２側からスタッドボルト１３によって固定している（例えば、特許文献１参照。）。   A lining material is provided on the inner surface of the furnace body of the continuous annealing furnace for heat insulation. Conventionally, as a lining material for a continuous annealing furnace, an amorphous ceramic fiber material, which is a cotton-like heat-resistant fiber material, has been used. However, since this amorphous ceramic fiber material contains shots (powder), for the purpose of preventing shot scattering and exposure, a lining material 11 is formed by a large number of rectangular metal plates 10 as shown in FIG. The metal plate 10 is fixed by the stud bolt 13 from the furnace body 12 side (see, for example, Patent Document 1).

実公昭６２−３６０７０号公報Japanese Utility Model Publication No. 62-36070

ところが、通常の連続焼鈍炉では、スタッドボルト１３の数が数万から１０数万本ある。また、金属板１０は互いに重ね代をとって配置され、スタッドボルト１３用の孔の位置が異なるものがあるため、取り付け位置と順番が指定されている。そのため、金属板１０の取付作業には多大な工数を要しているうえ、金属板１０に設けられた孔の位置と炉体の内面に予め設けられたスタッドボルト１３の位置とが合わない場合、さらに多大な工数を要することになる。   However, in a normal continuous annealing furnace, the number of stud bolts 13 is from tens of thousands to hundreds of thousands. Moreover, since the metal plates 10 are arranged so as to overlap each other and the positions of the holes for the stud bolts 13 are different, the attachment position and the order are specified. Therefore, the mounting work of the metal plate 10 requires a great number of man-hours, and the position of the hole provided in the metal plate 10 and the position of the stud bolt 13 provided in advance on the inner surface of the furnace body do not match. Furthermore, a great deal of man-hours will be required.

そこで、本発明においては、炉体の内面に設けられる非晶質セラミックファイバー材からのショットの飛散および露出の防止を簡単に行えるようにした低コストの連続焼鈍炉を提供することを目的とする。   Accordingly, an object of the present invention is to provide a low-cost continuous annealing furnace that can easily prevent the scattering and exposure of shots from the amorphous ceramic fiber material provided on the inner surface of the furnace body. .

本発明の連続焼鈍炉は、炉体の内面に設けられた非晶質セラミックファイバー材と、非晶質セラミックファイバー材の表面を覆う結晶質セラミックファイバー材と、結晶質セラミックファイバー材の表面に配設された網状体と、炉体の内面に突設されたピンであり、非晶質セラミックファイバー材と結晶質セラミックファイバー材と網状体とを貫通して、非晶質セラミックファイバー材と結晶質セラミックファイバー材と網状体とを固定するピンとを有するものである。   The continuous annealing furnace of the present invention includes an amorphous ceramic fiber material provided on the inner surface of the furnace body, a crystalline ceramic fiber material covering the surface of the amorphous ceramic fiber material, and a surface of the crystalline ceramic fiber material. It is a pin that is provided on the inner surface of the furnace body and the inner surface of the furnace body, penetrates the amorphous ceramic fiber material, the crystalline ceramic fiber material, and the network body, and passes through the amorphous ceramic fiber material and the crystalline material. It has a pin which fixes a ceramic fiber material and a net-like body.

本発明の連続焼鈍炉では、網状体の網目が撓むことで、炉体の内面に突設されたピンが非晶質セラミックファイバー材と結晶質セラミックファイバー材と網状体とを貫通することができる。そのため、炉体の内面に突設されるピンの位置に関わらず、非晶質セラミックファイバー材と結晶質セラミックファイバー材と網状体とを容易にピンにより固定することができる。また、本発明の連続焼鈍炉では、炉体の内面に設けられた非晶質セラミックファイバー材の表面を覆う結晶質セラミックファイバー材がショットを含まないため、この結晶質セラミックファイバー材により非晶質セラミックファイバー材に含まれるショットの飛散および露出が防止される。   In the continuous annealing furnace of the present invention, the net of the mesh body is bent, so that the pins protruding from the inner surface of the furnace body may penetrate the amorphous ceramic fiber material, the crystalline ceramic fiber material, and the mesh body. it can. Therefore, the amorphous ceramic fiber material, the crystalline ceramic fiber material, and the mesh body can be easily fixed by the pins regardless of the positions of the pins protruding from the inner surface of the furnace body. Further, in the continuous annealing furnace of the present invention, since the crystalline ceramic fiber material covering the surface of the amorphous ceramic fiber material provided on the inner surface of the furnace body does not include shots, the crystalline ceramic fiber material is amorphous. Scattering and exposure of shots contained in the ceramic fiber material are prevented.

ここで、ピンは従来のスタッドボルトを使用することも可能であるが、本発明の連続焼鈍炉では、先端部が９０°回動することにより、網状体を押さえるピンを用いることが望ましい。スタッドボルトを使用する場合、スタッドボルトにナットをねじ込むことにより網状体を押さえ、ナットの緩み止めのために溶接固定する必要がある。一方、先端部が９０°回動することにより、網状体を押さえるピンによれば、ピンに貫通させた非晶質セラミックファイバー材と結晶質セラミックファイバー材と網状体とを押さえ付け、非晶質セラミックファイバー材および結晶質セラミックファイバー材を圧縮した状態でピンの先端部を９０°回動すれば、非晶質セラミックファイバー材および結晶質セラミックファイバー材の復元力によりピンの先端部が９０°回動した状態のまま固定されるので、溶接等の作業は不要となる。   Here, although a conventional stud bolt can be used as the pin, in the continuous annealing furnace of the present invention, it is desirable to use a pin that presses the mesh by turning the tip part by 90 °. When using stud bolts, it is necessary to press the mesh by screwing the nuts into the stud bolts and fix them by welding to prevent the nuts from loosening. On the other hand, when the tip rotates 90 °, the pin that holds the mesh body presses the amorphous ceramic fiber material, the crystalline ceramic fiber material, and the mesh body that are passed through the pin, If the tip of the pin is rotated 90 ° with the ceramic fiber material and the crystalline ceramic fiber material compressed, the tip of the pin rotates 90 ° by the restoring force of the amorphous ceramic fiber material and the crystalline ceramic fiber material. Since it is fixed in the moved state, work such as welding becomes unnecessary.

（１）炉体の内面に設けられた非晶質セラミックファイバー材と、非晶質セラミックファイバー材の表面を覆う結晶質セラミックファイバー材と、結晶質セラミックファイバー材の表面に配設された網状体と、炉体の内面に突設されたピンであり、非晶質セラミックファイバー材と結晶質セラミックファイバー材と網状体とを貫通して、非晶質セラミックファイバー材と結晶質セラミックファイバー材と網状体とを固定するピンとを有する連続焼鈍炉により、炉体の内面に設けられる非晶質セラミックファイバー材からのショットの飛散および露出の防止を簡単に行い低コストの連続焼鈍炉が得られる。 (1) Amorphous ceramic fiber material provided on the inner surface of the furnace body, a crystalline ceramic fiber material covering the surface of the amorphous ceramic fiber material, and a network disposed on the surface of the crystalline ceramic fiber material And a pin protruding from the inner surface of the furnace body, passing through the amorphous ceramic fiber material, the crystalline ceramic fiber material, and the mesh body, and the amorphous ceramic fiber material, the crystalline ceramic fiber material, and the mesh shape. A continuous annealing furnace having a pin for fixing the body can easily prevent shots from being scattered and exposed from the amorphous ceramic fiber material provided on the inner surface of the furnace body to obtain a low-cost continuous annealing furnace.

（２）先端部が９０°回動することにより、網状体を押さえるピンにより、容易に非晶質セラミックファイバー材と結晶質セラミックファイバー材と網状体とを炉体の内面に固定することが可能となり、溶接等の作業が不要となる。 (2) By rotating the tip by 90 °, it is possible to easily fix the amorphous ceramic fiber material, the crystalline ceramic fiber material, and the mesh body to the inner surface of the furnace body by a pin that holds the mesh body. Thus, work such as welding becomes unnecessary.

本発明の実施の形態における連続焼鈍炉の炉壁構造を示す斜視図である。It is a perspective view which shows the furnace wall structure of the continuous annealing furnace in embodiment of this invention. 図１のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 図１の回転式スタッドピンの詳細を示す図であって、（ａ）は先端部を回動させていない状態を示す図、（ｂ）は先端部を９０°回動させた状態を示す図である。It is a figure which shows the detail of the rotary stud pin of FIG. 1, Comprising: (a) is a figure which shows the state which is not rotating the front-end | tip part, (b) is a figure which shows the state which rotated the front-end | tip part 90 degrees. It is. 図１の連続焼鈍炉の炉壁の形成手順を示す断面図である。It is sectional drawing which shows the formation procedure of the furnace wall of the continuous annealing furnace of FIG. 従来の連続焼鈍炉の炉壁構造を示す斜視図である。It is a perspective view which shows the furnace wall structure of the conventional continuous annealing furnace.

図１は本発明の実施の形態における連続焼鈍炉の炉壁構造を示す斜視図、図２は図１のＡ−Ａ断面図、図３は図１の回転式スタッドピンの詳細を示す図であって、（ａ）は先端部を回動させていない状態を示す図、（ｂ）は先端部を９０°回動させた状態を示す図である。   1 is a perspective view showing a furnace wall structure of a continuous annealing furnace according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1, and FIG. 3 is a diagram showing details of the rotary stud pin of FIG. FIG. 5A is a diagram showing a state where the tip is not rotated, and FIG. 5B is a diagram showing a state where the tip is rotated 90 °.

図１において、本発明の実施の形態における連続焼鈍炉の炉壁構造は、炉体を構成する炉体金物１と、炉体金物１の内面に積層されて設けられた非晶質セラミックファイバー材（以下、「非晶質ＣＦ材」と称す。）２と、非晶質ＣＦ材２の表面を覆う結晶質セラミックファイバー材（以下、「結晶質ＣＦ材」と称す。）３と、結晶質ＣＦ材３の表面に配設された網状体としての金網４と、炉体金物１の内面に突設された回転式スタッドピン５と、ワッシャー６とから構成される。   In FIG. 1, the furnace wall structure of the continuous annealing furnace in the embodiment of the present invention includes a furnace body metal 1 constituting the furnace body and an amorphous ceramic fiber material provided by being laminated on the inner surface of the furnace body metal 1. (Hereinafter referred to as “amorphous CF material”) 2, crystalline ceramic fiber material (hereinafter referred to as “crystalline CF material”) 3 covering the surface of the amorphous CF material 2, and crystalline A wire net 4 as a net disposed on the surface of the CF material 3, a rotary stud pin 5 protruding from the inner surface of the furnace body 1, and a washer 6 are included.

非晶質ＣＦ材２は、溶融繊維化法により製造され、例えば、アルミナおよびシリカを主成分とする原料を約２０００℃の高温で溶融し、その細流を高速回転するローターにあてて遠心力により繊維化（スピニング法）し、得られたバルク（原綿）を積層させ、減摩剤を添加してニードリング処理を行い、減摩剤を加熱除去して製造されたブランケットである。なお、繊維化の方法には、高速空気または水蒸気で吹き飛ばして繊維化する方法もある（ブローイング法）。非晶質ＣＦ材２は、このような製造法によるため、内部にショット（粉末）が含まれたショット材である。   The amorphous CF material 2 is manufactured by a melt fiberization method. For example, a raw material mainly composed of alumina and silica is melted at a high temperature of about 2000 ° C., and the trickle is applied to a rotor rotating at a high speed by centrifugal force. It is a blanket manufactured by fiberizing (spinning method), laminating the obtained bulk (raw cotton), adding a lubricant, performing a needling treatment, and removing the lubricant by heating. In addition, as a fiberization method, there is also a method in which the fiber is blown off with high-speed air or water vapor (blowing method). Since the amorphous CF material 2 is based on such a manufacturing method, the amorphous CF material 2 includes a shot (powder) inside.

非晶質ＣＦ材３は、高アルミナ組成の融液から前駆体繊維化法により製造されるアルミナ質のセラミックファイバー材である。非晶質ＣＦ材３は、アルミニウムを含む繊維前駆体溶液を室温で紡糸して前駆体繊維を作り、ニードリング処理後、１０００℃以上で焼成して結晶化させて製造されたブランケットである。結晶質ＣＦ材３は、このような製造法によるため、内部にショットが含まれていない非ショット材である。   The amorphous CF material 3 is an alumina ceramic fiber material manufactured by a precursor fiberization method from a melt having a high alumina composition. The amorphous CF material 3 is a blanket manufactured by spinning a fiber precursor solution containing aluminum at room temperature to form a precursor fiber, and firing and crystallizing the fiber after needling. The crystalline CF material 3 is a non-shot material that does not include shots inside because of such a manufacturing method.

金網４は、ステンレス（例えば、ＳＵＳ３１０Ｓ）製の線径φ１．５ｍｍの２メッシュのものを用いることが好ましいが、回転式スタッドピン５の位置に関わらず網目が撓むことにより回転式スタッドピン５が貫通可能なものであれば良い。   The wire mesh 4 is preferably made of stainless steel (for example, SUS310S) having a mesh size of 2 mm and having a wire diameter of φ1.5 mm, but the rotating stud pin 5 is formed by bending the mesh regardless of the position of the rotating stud pin 5. Any material can be used if it can penetrate.

回転式スタッドピン５は、従来公知のスタッドボルトと同様に炉体金物１の内面にスタッド溶接されて固定されたものである。図３に示すように、回転式スタッドピン５の先端部には、９０°回転可能なストッパ部材５ａが回転軸５ｂにより軸支されている。回転式スタッドピン５は、非晶質ＣＦ２と結晶質ＣＦ３と金網４とを貫通し、その先端部が９０°回転することにより非晶質ＣＦ材２と結晶質ＣＦ材３と金網４とを固定するものである。   The rotary stud pin 5 is fixed by being welded to the inner surface of the furnace body 1 in the same manner as a conventionally known stud bolt. As shown in FIG. 3, a stopper member 5a capable of rotating by 90 ° is pivotally supported by a rotating shaft 5b at the tip of the rotary stud pin 5. The rotary stud pin 5 passes through the amorphous CF 2, the crystalline CF 3, and the wire mesh 4, and the tip portion of the rotary stud pin 5 rotates 90 ° to thereby connect the amorphous CF material 2, the crystalline CF material 3, and the wire mesh 4. It is to be fixed.

次に、上記構成の連続焼鈍炉の炉壁構造の形成方法について説明する。図４は図１の連続焼鈍炉の炉壁の形成手順を示す断面図である。   Next, a method for forming the furnace wall structure of the continuous annealing furnace having the above configuration will be described. FIG. 4 is a cross-sectional view showing the procedure for forming the furnace wall of the continuous annealing furnace of FIG.

（１）炉体金物１の内面に回転式スタッドピン５を所定の配置で溶接固定する。
（２）非晶質ＣＦ材２を回転式スタッドピン５に串刺しにする要領で炉体金物１側から積層する。
（３）非晶質ＣＦ材２の炉内側表層の全面に結晶質ＣＦ材３を、非晶質ＣＦ材２と同様、回転式スタッドピン５に串刺しにする要領で取り付ける。
（４）結晶質ＣＦ材２の全表面に金網４を、回転式スタッドピン５に串刺しにする要領で取り付ける。
（５）非晶質ＣＦ材２、結晶質ＣＦ材３および金網４の柔軟性を利用して、回転式スタッドピン５の先端部のストッパ部材５ａが回転可能な位置まで、非晶質ＣＦ材２、結晶質ＣＦ材３および金網４を同時に押し込む。
（６）回転式スタッドピン５にワッシャー６を貫通させ（図４（ａ）参照。）、ストッパ部材５ａを回動させた後（同図（ｂ）参照。）、非晶質ＣＦ材２、結晶質ＣＦ材３および金網４への押力を緩め、非晶質ＣＦ材２および結晶質ＣＦ材３の復元力を利用して、ストッパ部材５ａにより非晶質ＣＦ材２、結晶質ＣＦ材３、金網４およびワッシャー６を固定する（同図（ｃ）参照。）。 (1) The rotary stud pin 5 is welded and fixed to the inner surface of the furnace body hardware 1 in a predetermined arrangement.
(2) The amorphous CF material 2 is laminated from the furnace body 1 side in the manner of skewering the rotary stud pin 5.
(3) The crystalline CF material 3 is attached to the entire surface of the furnace inner surface layer of the amorphous CF material 2 in the manner of being skewered to the rotary stud pin 5 in the same manner as the amorphous CF material 2.
(4) The wire mesh 4 is attached to the entire surface of the crystalline CF material 2 in the manner of skewering the rotary stud pin 5.
(5) Using the flexibility of the amorphous CF material 2, the crystalline CF material 3, and the wire mesh 4, the amorphous CF material is moved to a position where the stopper member 5 a at the tip of the rotary stud pin 5 can rotate. 2. The crystalline CF material 3 and the wire mesh 4 are pushed in simultaneously.
(6) After passing the washer 6 through the rotary stud pin 5 (see FIG. 4A) and rotating the stopper member 5a (see FIG. 4B), the amorphous CF material 2, The pressing force on the crystalline CF material 3 and the wire mesh 4 is relaxed, and the restoring force of the amorphous CF material 2 and the crystalline CF material 3 is used to stop the amorphous CF material 2 and the crystalline CF material by the stopper member 5a. 3. Fix the wire mesh 4 and the washer 6 (see FIG. 3C).

以上のように、本実施形態における連続焼鈍炉では、金網４の網目が撓むことで、炉体金物１の内面に突設された回転式スタッドピン５が非晶質ＣＦ材２と結晶質ＣＦ材３と金網４とを貫通することができる。そのため、炉体金物１の内面に突設される回転式スタッドピン５の位置に関わらず、非晶質ＣＦ材２と結晶質ＣＦ材３と金網４とを容易に回転式スタッドピン５により固定することができる。   As described above, in the continuous annealing furnace according to the present embodiment, the mesh of the metal mesh 4 is bent, so that the rotary stud pin 5 protruding from the inner surface of the furnace body metal 1 becomes the amorphous CF material 2 and the crystalline material. The CF material 3 and the wire mesh 4 can be penetrated. Therefore, the amorphous CF material 2, the crystalline CF material 3, and the wire mesh 4 are easily fixed by the rotary stud pin 5 regardless of the position of the rotary stud pin 5 protruding from the inner surface of the furnace body 1. can do.

また、本実施形態における連続焼鈍炉では、炉体金物１の内面に設けられた非晶質ＣＦ材２の表面を覆う結晶質ＣＦ材３がショットを含まないため、この結晶質ＣＦ材３により非晶質ＣＦ材２に含まれるショットの飛散および露出が防止される。このように、本実施形態における連続焼鈍炉では、炉体金物１の内面に設けられる非晶質ＣＦ材２からのショットの飛散および露出の防止を簡単に行うことができ、低コストである。   Further, in the continuous annealing furnace in the present embodiment, the crystalline CF material 3 covering the surface of the amorphous CF material 2 provided on the inner surface of the furnace body 1 does not include shots. Scattering and exposure of shots contained in the amorphous CF material 2 are prevented. Thus, in the continuous annealing furnace in the present embodiment, it is possible to easily prevent the shots from being scattered and exposed from the amorphous CF material 2 provided on the inner surface of the furnace body 1, and the cost is low.

また、本実施形態における連続焼鈍炉では、先端部が９０°回動することにより、金網４を押さえる回転式スタッドピン５により、容易に非晶質ＣＦ材２と結晶質ＣＦ材３と金網４とを炉体金物１の内面に固定することが可能であり、溶接等の作業が不要となっている。なお、回転式スタッドピン５に代えて、従来のスタッドボルトを使用することも可能である。   Further, in the continuous annealing furnace in the present embodiment, the amorphous CF material 2, the crystalline CF material 3, and the wire mesh 4 can be easily obtained by the rotating stud pin 5 that holds the wire mesh 4 by turning the tip portion by 90 °. Can be fixed to the inner surface of the furnace body 1, and work such as welding is unnecessary. Instead of the rotary stud pin 5, a conventional stud bolt can be used.

本発明の連続焼鈍炉は、連続的に鋼板を焼鈍する焼鈍炉として有用である。   The continuous annealing furnace of the present invention is useful as an annealing furnace for continuously annealing a steel sheet.

１ 炉体金物
２ 非晶質ＣＦ材
３ 結晶質ＣＦ材
４ 金網
５ 回転式スタッドピン
５ａ ストッパ部材
５ｂ 回転軸 DESCRIPTION OF SYMBOLS 1 Furnace metal object 2 Amorphous CF material 3 Crystalline CF material 4 Wire net 5 Rotating stud pin 5a Stopper member 5b Rotating shaft

Claims (2)

炉体の内面に設けられた非晶質セラミックファイバー材と、
前記非晶質セラミックファイバー材の表面を覆う結晶質セラミックファイバー材と、
前記結晶質セラミックファイバー材の表面に配設された網状体と、
前記炉体の内面に突設されたピンであり、前記非晶質セラミックファイバー材と前記結晶質セラミックファイバー材と前記網状体とを貫通して、前記非晶質セラミックファイバー材と前記結晶質セラミックファイバー材と前記網状体とを固定するピンと
を有する連続焼鈍炉。 An amorphous ceramic fiber material provided on the inner surface of the furnace body;
A crystalline ceramic fiber material covering a surface of the amorphous ceramic fiber material;
A net disposed on the surface of the crystalline ceramic fiber material;
A pin protruding from the inner surface of the furnace body, penetrating the amorphous ceramic fiber material, the crystalline ceramic fiber material, and the mesh body, and the amorphous ceramic fiber material and the crystalline ceramic. A continuous annealing furnace having a fiber material and a pin for fixing the mesh body. 前記ピンは、先端部が９０°回動することにより、前記網状体を押さえるものである請求項１記載の連続焼鈍炉。   The continuous annealing furnace according to claim 1, wherein the pin is configured to hold the mesh body by rotating a tip portion by 90 °.
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