JP2791453B2 - Cover furnace - Google Patents
Cover furnaceInfo
- Publication number
- JP2791453B2 JP2791453B2 JP5174978A JP17497893A JP2791453B2 JP 2791453 B2 JP2791453 B2 JP 2791453B2 JP 5174978 A JP5174978 A JP 5174978A JP 17497893 A JP17497893 A JP 17497893A JP 2791453 B2 JP2791453 B2 JP 2791453B2
- Authority
- JP
- Japan
- Prior art keywords
- cover
- inner cover
- furnace
- seal
- coil
- 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 - Fee Related
Links
Landscapes
- Furnace Details (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、コイル用焼なまし炉と
して、炉床に積重ねたコイルを覆い、その酸化を防止す
るために保護雰囲気ガスを充満させるインナーカバー、
及びそのインナーカバーを覆って間接的にコイルを加熱
する炉体よりなるカバー炉に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an annealing furnace for a coil, which covers a coil stacked on a hearth and is filled with a protective atmosphere gas to prevent oxidation of the coil.
And a cover furnace comprising a furnace body that covers the inner cover and indirectly heats the coil.
【０００２】[0002]
【従来の技術】図１及び図２を参考にして説明する。従
来、コイル用焼なまし炉として、炉床１３上に、積重ね
たコイル９０を覆い且つその酸化を防止するために保護
雰囲気ガス１９を充満させるインナーカバー１６、及び
そのインナーカバー１６を覆い且つ間接的にコイル９０
を加熱する炉体２０よりなるカバー炉が使用されてい
る。このカバー炉においては、通常、保護雰囲気ガス１
９を充満したインナーカバー１６と外気１７とは炉床１
３でシールされていて、炉体２０で覆い、その中で燃料
を燃焼させて、高温の燃焼ガス１８を作り、間接的にコ
イル９０を加熱・均熱・冷却（或いは徐冷）よりなる焼
なまし処理を行い、その処理が終わると、炉体２０を吊
り上げるか、水平移動するかして、別の炉床に準備した
コイルに移し、再び熱処理に使用するようにしている。
上記作業を繰り返すことにより、炉体２０は連続的に加
熱を続け、炉床１３は加熱・均熱・冷却・コイル取り出
し作業を繰り返すことになる。2. Description of the Related Art A description will be given with reference to FIGS. Conventionally, as a coil annealing furnace, an inner cover 16 that covers the stacked coils 90 on the hearth 13 and is filled with a protective atmosphere gas 19 in order to prevent oxidation thereof, and covers and indirectly covers the inner cover 16. Coil 90
A cover furnace composed of a furnace body 20 for heating is used. In this cover furnace, usually, a protective atmosphere gas 1
The inner cover 16 and the outside air 17 filled with the furnace hearth 1
3 and covered with a furnace body 20, in which fuel is burned to produce high-temperature combustion gas 18 and indirectly heats, uniformly heats and cools (or gradually cools) the coil 90. After the annealing process is completed, the furnace body 20 is lifted or moved horizontally, transferred to a coil prepared on another hearth, and used again for heat treatment.
By repeating the above operation, the furnace body 20 is continuously heated, and the hearth 13 is repeatedly heated, soaked, cooled, and taken out of the coil.
【０００３】図１を参考にして、シングルタイプのカバ
ー型炉の一例を説明すると、１０は床面、１１はその床
面１０に形成した凹部、１２はその凹部内に設けた基枠
である。炉床１３は凹部１１内において基枠１２の上に
据え付けてあって、その中央には環状溝１５を配してコ
イル９０を載せる丘状載置部１４を設け、さらに前記環
状溝底上にカバー用押圧シール８を介して前記インナー
カバー１６を据え付けてあり、炉床１３の周壁上には、
インナーカバー１６を覆う炉体２０を炉体用押圧シール
２１を介して脱着可能に据え付けてある。特にインナー
カバー１６下部のカバー用押圧シール８は燃焼ガス１８
に直接触れないよう保護するために次の構成を施してい
る。すなわち、前記インナーカバー１６外周には砂・水
等の流動性シール体２３を入れた保持樋６３を設け、炉
体２０内面には断面Ｌ字状の遮断壁６６を突設し、その
下端を前記保持樋６３内の流動性シール体２３に浸漬さ
せてある。なお、炉体２０には加熱用燃焼ガス１８を発
生させるバーナー９５並びに燃焼ガスの排気筒９６を設
けてある。Referring to FIG. 1, an example of a single-type cover type furnace will be described. Reference numeral 10 denotes a floor, 11 denotes a recess formed in the floor 10, and 12 denotes a base frame provided in the recess. . The hearth 13 is installed on the base frame 12 in the recess 11, and an annular groove 15 is provided in the center of the hearth 13, and a hill-shaped mounting portion 14 on which the coil 90 is mounted is provided. The inner cover 16 is installed via the cover pressing seal 8, and on the peripheral wall of the hearth 13,
A furnace body 20 covering the inner cover 16 is detachably mounted via a furnace body pressure seal 21. In particular, the cover pressing seal 8 below the inner cover 16 is
The following configuration is applied to protect the device from direct contact. That is, a holding gutter 63 containing a fluid seal body 23 such as sand or water is provided on the outer periphery of the inner cover 16, and a cut-off wall 66 having an L-shaped cross section is protruded on the inner surface of the furnace body 20, and the lower end thereof is formed. It is immersed in the fluid seal 23 in the holding trough 63. The furnace body 20 is provided with a burner 95 for generating the heating combustion gas 18 and an exhaust tube 96 for the combustion gas.
【０００４】マルチタイプのカバー型炉について、図２
を参考に説明すると、シングルタイプのカバー炉に比べ
て、保持樋６３、遮断壁６６が省略してある。FIG. 2 shows a multi-type cover type furnace.
The holding gutter 63 and the blocking wall 66 are omitted as compared with a single-type cover furnace.
【０００５】ところで、シングルタイプのカバー炉は、
保持樋６３がインナーカバー１６に取付けてあるため、
炉体２０の炉床１３への据付けの際、流動性シール体２
３が砂の場合、遮断壁６６によって、保持樋６３内の砂
レベルが変動し、その都度、シール性確保のため、砂レ
ベルを補正する必要があるが、炉体２０内にあるので、
作業に手間が掛かる。また水の場合、コイル９０のセッ
ト・取出しの都度、給水・排水の配管の取付け作業が必
要であり、シール性確保のための煩雑な作業を避けるこ
とが出来ないと言う問題点がある。By the way, a single-type cover furnace is
Since the holding gutter 63 is attached to the inner cover 16,
When the furnace body 20 is installed on the hearth 13, the fluid seal 2
In the case where 3 is sand, the sand level in the holding gutter 63 fluctuates due to the blocking wall 66. In each case, it is necessary to correct the sand level in order to secure the sealing property.
It takes time to work. Further, in the case of water, every time the coil 90 is set or taken out, it is necessary to install a water supply / drainage pipe, and there is a problem that a complicated operation for ensuring the sealability cannot be avoided.
【０００６】また、マルチタイプカバー炉は、インナー
カバー１６と燃焼ガス１８とのシールは、インナーカバ
ー１６の自重を利用したカバー用押圧シール８によるた
め、インナーカバー１６の据え付け精度に依存してい
て、特にコイル９０の酸化が不可の場合、シール性の確
保に不安が残る。これを解消するため、インナーカバー
１６下部を炉床１３に締結することが考えられるが、締
結部が高温下にあり、熱膨張等により、締結が緩み、そ
の効果が十分発揮されないと言う問題点がある。さら
に、炉体２０と外部とのシールは、インナーカバー１６
を複数個設けてあって、上記シングルタイプのように、
インナーカバー１６と炉体２０とを利用して行うことが
出来ず、炉体２０の自重を利用したカバー用押圧シール
８のみであって、シールが不十分である。In the multi-type cover furnace, since the seal between the inner cover 16 and the combustion gas 18 is formed by the cover pressing seal 8 utilizing the weight of the inner cover 16, it depends on the installation accuracy of the inner cover 16. In particular, when the coil 90 cannot be oxidized, there remains an uneasiness in securing the sealing performance. In order to solve this, it is conceivable to fasten the lower part of the inner cover 16 to the hearth 13, but the fastening portion is under high temperature, the fastening is loosened due to thermal expansion and the like, and the effect is not sufficiently exhibited. There is. Further, the seal between the furnace body 20 and the outside is formed by the inner cover 16.
Are provided, like the single type above,
It cannot be performed using the inner cover 16 and the furnace body 20, and only the cover pressing seal 8 utilizing the own weight of the furnace body 20 is insufficient.
【０００７】[0007]
【発明が解決しようとする課題】解決しようとする問題
点は、上記従来のカバー炉は、特にシール部材の一部が
炉体に設けてあって、特に炉体の脱着時にシール機構の
調整が煩雑であることである。The problem to be solved is that the above-mentioned conventional cover furnace has, in particular, a part of the sealing member provided on the furnace body, and particularly requires adjustment of the sealing mechanism when the furnace body is detached. It is complicated.
【０００８】[0008]
【課題を解決するための手段】図３乃至図６を参考にし
て説明する。炉床１３上に外気連通環状溝１５を配して
コイル載置用丘状載置部１４を設け、さらに前記外気連
通環状溝底上に外気によって冷却されるべく設けられた
カバー用押圧シール８を介して、前記コイル９０を覆い
且つその酸化を防止するために保護雰囲気ガス１９を充
満させるインナーカバー１６を据え付け、さらに炉床１
３の周壁上にインナーカバー１６を覆い且つ燃焼ガス１
８によって間接的にコイル９０を加熱する炉体２０を炉
体用押圧シール２１を介して脱着可能に据え付けたカバ
ー炉において、前記環状溝１５の外周壁に砂・水等の流
動性シール体２３を入れた保持樋６２を設け、前記イン
ナーカバー１６外周に断面逆Ｌ字状の遮断壁６５を突設
し、その遮断壁下端を前記保持樋６２内の流動性シール
体２３に浸潰させて、前記流動性シール体２３の調整を
容易にすると共に前記カバー用押圧シール８を前記燃焼
ガス１８から隔離し、さらに前記カバー用押圧シール８
を前記保護雰囲気ガス１９が充満する前記インナーカバ
ー１６室内の外側に位置させてある。A description will be given with reference to FIGS. A hill-shaped mounting portion 14 for coil placement is provided by disposing an outside air communication annular groove 15 on the hearth 13, and a cover pressing seal 8 provided on the bottom of the outside air communication annular groove to be cooled by outside air. And an inner cover 16 that covers the coil 90 and is filled with a protective atmosphere gas 19 to prevent oxidation of the coil 90.
3 covers the inner cover 16 on the peripheral wall of the combustion gas 1
In a cover furnace in which the furnace body 20 for indirectly heating the coil 90 by the furnace 8 is detachably mounted via a furnace body pressure seal 21, a fluid seal body 23 such as sand or water is provided on the outer peripheral wall of the annular groove 15. Is provided on the outer periphery of the inner cover 16, and a blocking wall 65 having an inverted L-shaped cross section is protruded from the outer periphery of the inner cover 16, and a lower end of the blocking wall is immersed in the fluid seal body 23 in the holding gutter 62. And facilitates adjustment of the fluid seal body 23, isolates the cover pressing seal 8 from the combustion gas 18, and further includes the cover pressing seal 8
Are located outside the inside of the inner cover 16 chamber filled with the protective atmosphere gas 19.
【０００９】[0009]
【実施例】シングルタイプのカバー型炉の一実施例を説
明すると、１０は床面、１１はその床面１０に形成した
凹部、１２はその凹部１１内に設けた基枠である。炉床
１３は凹部１１内において基枠１２の上に据え付けてあ
って、その中央には外気１７に通じる環状溝１５を配し
てコイル９０を載せる丘状載置部１４を設け、さらにそ
の環状溝底上にカバー用押圧シール８を介して前記イン
ナーカバー１６を据え付けてあり、炉床１３の周壁上に
は、インナーカバー１６を覆う炉体２０を炉体用押圧シ
ール２１を介して脱着可能に据え付けてある。さらに、
環状溝１５の外周に砂・水等の流動性シール体２３を入
れた保持樋６２を設け、前記インナーカバー１６外周に
断面逆Ｌ字状の遮断壁６５を突設し、その下端を前記保
持樋６２内の流動性シール体２３に浸漬させてある。な
お、遮断壁６５の水平部分はセラミックウール等よりな
る断熱材で構成してあり、また炉体２０には加熱用燃焼
ガスを発生させるバーナー９５並びに燃焼ガスの排気筒
９６を設け、丘状載置部１４中央空洞内には保護雰囲気
ガス循環ファ９４を設けてある。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a single-type cover type furnace will be described. Reference numeral 10 denotes a floor, 11 denotes a recess formed in the floor 10, and 12 denotes a base frame provided in the recess 11. The hearth 13 is mounted on the base frame 12 in the recess 11, and at the center thereof, an annular groove 15 communicating with the outside air 17 is provided, and a hill-shaped mounting portion 14 for mounting the coil 90 is provided. The inner cover 16 is installed on the groove bottom via the cover pressing seal 8, and the furnace body 20 covering the inner cover 16 can be attached and detached on the peripheral wall of the hearth 13 via the furnace body pressing seal 21. It is installed in. further,
A retaining gutter 62 containing a fluid seal body 23 such as sand or water is provided on the outer periphery of the annular groove 15, and a blocking wall 65 having an inverted L-shaped cross section is protrudingly provided on the outer periphery of the inner cover 16, and the lower end thereof is retained. It is immersed in the fluid seal 23 in the gutter 62. The horizontal portion of the blocking wall 65 is made of a heat insulating material made of ceramic wool or the like, and the furnace body 20 is provided with a burner 95 for generating a combustion gas for heating and an exhaust tube 96 for the combustion gas. A protective atmosphere gas circulation fan 94 is provided in the central cavity of the mounting portion 14.
【００１０】作用について説明すると、先ず炉床１３に
コイル９０を積重ね、そのコイル９０を覆うインナーカ
バー１６を据え付ける。次にインナーカバー１６内に保
護雰囲気ガス１９を充満させる。保護雰囲気ガス１９を
充満したインナーカバー１６と外気１７との間はカバー
用押圧シール８によりシールされる。さらにそのインナ
ーカバー１６を覆う炉体２０を据え付ける。その際、環
状溝１５の外周壁に設けた保持樋６２内の砂・水等の流
動性シール体２３にインナーカバー１６の周囲に設けた
断面逆Ｌ字状の遮断壁６５の先端を浸漬させる。バーナ
ー９５で燃料を燃焼させて加熱用燃焼ガス１８を発生さ
せ、その燃焼ガス１８によりインナーカバー１６で覆わ
れたコイル９０を加熱・均熱・冷却（或いは徐冷）より
なる焼なまし処理を行う。その際、燃焼ガス１８と外気
１７とは、前記保持樋６２に入れた流動性シール体２３
・遮断壁６５によりシールされる。処理が終わると、炉
体２０を吊り上げ（或いは水平移動し）、別の炉床に移
し、再び熱処理に使用する上記作業を繰り返すことによ
り、炉体２０は連続的に加熱を続けることが出来、炉床
１３は加熱・均熱・冷却・コイル９０の取り出し作業を
繰り返すことが出来る。なお、カバー用押圧シール８
は、外気連通環状溝１５内に設けられ、燃焼ガス１８か
ら隔離され、さらに保護雰囲気ガス１９が充満するイン
ナーカバー１６室内の外側に位置されているので、燃焼
ガス１８および保護雰囲気ガス１９によって高温化され
ず、よって高温化によって生ずる問題を未然に防止でき
る。The operation will be described. First, the coils 90 are stacked on the hearth 13 and the inner cover 16 covering the coils 90 is installed. Next, the protective atmosphere gas 19 is filled in the inner cover 16. The space between the inner cover 16 filled with the protective atmosphere gas 19 and the outside air 17 is sealed by the cover pressing seal 8. Further, a furnace body 20 that covers the inner cover 16 is installed. At this time, the tip of the inverted L-shaped cross-section wall 65 provided around the inner cover 16 is immersed in the fluid seal body 23 such as sand and water in the holding gutter 62 provided on the outer peripheral wall of the annular groove 15. . The fuel is burned by the burner 95 to generate the combustion gas 18 for heating, and the coil 90 covered with the inner cover 16 is annealed by the combustion gas 18 by heating, soaking, and cooling (or gradual cooling). Do. At this time, the combustion gas 18 and the outside air 17 are separated from the fluid sealing body 23
-Sealed by the blocking wall 65. After the treatment, the furnace body 20 is lifted (or horizontally moved), transferred to another hearth, and the above-mentioned operation used for the heat treatment is repeated again, so that the furnace body 20 can be continuously heated, The hearth 13 can be repeatedly heated, soaked, cooled, and taken out of the coil 90. The cover pressing seal 8
Is provided in the outside air communication annular groove 15, is isolated from the combustion gas 18, and is located outside the inner cover 16 chamber filled with the protective atmosphere gas 19. Thus, problems caused by high temperature can be prevented.
【００１１】[0011]
【発明の効果】本発明は以上のように、燃焼ガス１８と
外気１７とのシール部材である保持樋６５を固定炉床１
３の環状溝１５の外周壁に設け、且つ遮断壁６５をイン
ナーカバー１６に設けてあるため、砂シールの場合、イ
ンナーカバー１６を据え付けたのちに砂レベルを補正す
るだけで、砂レベルが乱されことがなく、また水シール
の場合、インナーカバー１６の脱着の都度、給排水配管
を接続・切り離しする必要がなく、常設すことが出来、
切り替え作業が極めて簡単になる。As described above, according to the present invention, the holding gutter 65 serving as a seal member for the combustion gas 18 and the outside air 17 is fixed to the fixed hearth 1.
3 is provided on the outer peripheral wall of the annular groove 15 and the blocking wall 65 is provided on the inner cover 16, so that in the case of a sand seal, the sand level is disturbed only by correcting the sand level after the inner cover 16 is installed. In the case of a water seal, there is no need to connect / disconnect the water supply / drainage pipe every time the inner cover 16 is attached / detached, and it can be permanently installed.
Switching work becomes extremely simple.
【００１２】また、マルチタイプ場合、従来弱点であっ
た保護雰囲気ガスと外気とのシールは、シングルタイプ
同様、炉床１３・インナーカバー１６間に介在するカバ
ー用押圧シール８により行われる。なお、そのシール部
は高温燃焼ガス１８から隔離されていて、高温になるこ
とがないため、必要に応じて、締結によりシール性を高
めることも可能である。また、炉体２０は、据え付けに
当たって、炉床１３との取り合いをを考えればよく、必
要あれば、手動による圧着機構も適用可能である。In the case of the multi-type, the sealing between the protective atmosphere gas and the outside air, which has been a weak point in the past, is performed by the cover pressing seal 8 interposed between the hearth 13 and the inner cover 16 as in the single type. Since the seal portion is isolated from the high-temperature combustion gas 18 and does not become high in temperature, it is possible to enhance the sealability by fastening if necessary. When the furnace body 20 is installed, it is sufficient to consider the fitting with the hearth 13. If necessary, a manual crimping mechanism can be applied.
【図１】従来のシングルタイプカバー炉を示す垂直切断
正面図である。FIG. 1 is a vertical sectional front view showing a conventional single type cover furnace.
【図２】従来のマルチタイプカバー炉を示す垂直切断正
面図である。FIG. 2 is a vertical sectional front view showing a conventional multi-type cover furnace.
【図３】本発明のシングルタイプカバー炉に適用した一
例を示す垂直切断正面図である。FIG. 3 is a vertical sectional front view showing an example applied to a single type cover furnace of the present invention.
【図４】図３の概略平面図である。FIG. 4 is a schematic plan view of FIG.
【図５】本発明のマルチタイプカバー炉に適用した一例
を示す垂直切断正面図である。FIG. 5 is a vertical sectional front view showing an example applied to the multi-type cover furnace of the present invention.
【図６】図５の概略平面図である。FIG. 6 is a schematic plan view of FIG.
８ カバー用押圧シール １０ 床面 １１ 凹部 １２ 基枠 １３ 炉床 １４ 丘状載置部 １５ 環状溝 １６ インナーカバー １７ 外気 １８ 燃焼ガス １９ 雰囲気ガス ２０ 炉体 ２１ 炉体用押圧シール ２３ 流動性シール体 ２７ 扉 ２８ レール ２９ 車輪 ６２ 保持樋 ６３ 保持樋 ６５ 遮断壁 ６６ 遮断壁 ９０ コイル ９４ 循環ファン ９５ バーナー ９６ 排気筒 Reference Signs List 8 pressure seal for cover 10 floor surface 11 concave portion 12 base frame 13 hearth 14 hill-shaped mounting portion 15 annular groove 16 inner cover 17 outside air 18 combustion gas 19 atmosphere gas 20 furnace body 21 furnace body pressure seal 23 fluid seal body 27 door 28 rail 29 wheel 62 holding gutter 63 holding gutter 65 blocking wall 66 blocking wall 90 coil 94 circulation fan 95 burner 96 exhaust cylinder
───────────────────────────────────────────────────── フロントページの続き (72)発明者 久保田 鐡也 東京都中央区京橋１丁目５番８号日本冶 金工業株式会社内 (72)発明者 山田 恒 川崎市川崎区小島町４番２号日本冶金工 業株式会社川崎製造所内 (56)参考文献 実開 昭59−149962（ＪＰ，Ｕ) 特公 昭46−25128（ＪＰ，Ｂ１) 実公 昭43−7130（ＪＰ，Ｙ１) 実公 昭54−40414（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.6，ＤＢ名) C21D 9/663 - 9/677──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tetsuya Kubota 1-5-8 Kyobashi, Chuo-ku, Tokyo Nippon Yakin Kogyo Co., Ltd. (72) Inventor Tsune Yamada 4-2 Kojimacho, Kawasaki-ku, Kawasaki-shi Nippon Yakin Kogyo Co., Ltd. Kawasaki Works (56) References Japanese Utility Model Sho 59-149962 (JP, U) Japanese Patent Publication 46-25128 (JP, B1) Japanese Utility Model 43-7130 (JP, Y1) 54-40414 (JP, Y2) (58) Field surveyed (Int. Cl. 6 , DB name) C21D 9/663-9/677
Claims (1)
５）を配してコイル載置用丘状載置部（１４）を設け、
さらに前記外気連通環状溝底上に外気によって冷却され
るべく設けられたカバー用押圧シール（８）を介して、
前記コイル（９０）を覆い且つその酸化を防止するため
に保護雰囲気ガス（１９）を充満させるインナーカバー
（１６）を据え付け、さらに炉床（１３）の周壁上にイ
ンナーカバー（１６）を覆い且つ燃焼ガス（１８）によ
って間接的にコイル（９０）を加熱する炉体（２０）を
炉体用押圧シール（２１）を介して脱着可能に据え付け
たカバー炉において、前記環状溝（１５）の外周壁に砂
・水等の流動性シール体（２３）を入れた保持樋（６
２）を設け、前記インナーカバー（１６）外周に断面逆
Ｌ字状の遮断壁（６５）を突設し、その遮断壁下端を前
記保持樋（６２）内の流動性シール体（２３）に浸漬さ
せて、前記流動性シール体（２３）の調整を容易にする
と共に前記カバー用押圧シール（８）を前記燃焼ガス
（１８）から隔離し、さらに前記カバー用押圧シール
（８）を前記保護雰囲気ガス（１９）が充満する前記イ
ンナーカバー（１６）室内の外側に位置させてなるカバ
ー炉。1. An outside air communication annular groove (1) on a hearth (13).
5) is arranged to provide a hill-shaped mounting portion (14) for coil mounting,
Further, it is cooled by the outside air on the bottom of the outside air communication annular groove.
Via a cover pressure seal (8) provided to
An inner cover (16) that covers the coil (90) and is filled with a protective atmosphere gas (19) to prevent the oxidation thereof is installed, and further covers the inner cover (16) on the peripheral wall of the hearth (13); In a cover furnace in which a furnace body (20) for indirectly heating a coil (90) by a combustion gas (18) is detachably mounted via a furnace body pressure seal (21), an outer periphery of the annular groove (15) is provided. A holding gutter (6) with a fluid sealing body (23) made of sand, water, etc.
2) is provided, and a blocking wall (65) having an inverted L-shaped cross section is projected from the outer periphery of the inner cover (16), and the lower end of the blocking wall is attached to the fluid seal (23) in the holding gutter (62). Immersion to facilitate adjustment of the fluid seal (23)
With the cover press seal (8) and the combustion gas.
(18) isolated from the pressure seal for the cover
(8) The above (a), which is filled with the protective atmosphere gas (19),
Inner cover (16) A cover furnace located outside the room .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5174978A JP2791453B2 (en) | 1993-06-21 | 1993-06-21 | Cover furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5174978A JP2791453B2 (en) | 1993-06-21 | 1993-06-21 | Cover furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH073339A JPH073339A (en) | 1995-01-06 |
| JP2791453B2 true JP2791453B2 (en) | 1998-08-27 |
Family
ID=15988082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5174978A Expired - Fee Related JP2791453B2 (en) | 1993-06-21 | 1993-06-21 | Cover furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2791453B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101365518B1 (en) * | 2011-12-07 | 2014-02-20 | (주)포스코 | Heat-treatment apparatus of grain-oriented electrical sheets |
| CN103557690B (en) * | 2013-10-31 | 2015-09-30 | 贵州新安航空机械有限责任公司 | A kind of fixed spring safety guard of bell-jar sinter box |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS437130Y1 (en) * | 1965-11-29 | 1968-03-30 | ||
| JPS5440414U (en) * | 1977-08-25 | 1979-03-17 | ||
| JPS59149962U (en) * | 1983-03-28 | 1984-10-06 | 川崎製鉄株式会社 | Batch annealing furnace sealing device |
-
1993
- 1993-06-21 JP JP5174978A patent/JP2791453B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH073339A (en) | 1995-01-06 |
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