JPH0875366A - Heat treating furnace - Google Patents
Heat treating furnaceInfo
- Publication number
- JPH0875366A JPH0875366A JP21137094A JP21137094A JPH0875366A JP H0875366 A JPH0875366 A JP H0875366A JP 21137094 A JP21137094 A JP 21137094A JP 21137094 A JP21137094 A JP 21137094A JP H0875366 A JPH0875366 A JP H0875366A
- Authority
- JP
- Japan
- Prior art keywords
- core tube
- furnace core
- furnace
- heat
- heat treatment
- 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.)
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- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は熱処理炉に関するもの
である。FIELD OF THE INVENTION The present invention relates to a heat treatment furnace.
【０００２】[0002]
【従来の技術】図６に従来の熱処理炉の一つである焼成
炉を示す。この焼成炉は、トンネル炉といわれる連続焼
成炉で、内部に焼成空間１３を有する炉本体１を備え、
炉本体１には、トンネル状の通路３５が貫通して形成さ
れている。2. Description of the Related Art FIG. 6 shows a firing furnace which is one of conventional heat treatment furnaces. This firing furnace is a continuous firing furnace called a tunnel furnace, and is provided with a furnace body 1 having a firing space 13 inside,
A tunnel-shaped passage 35 is formed through the furnace body 1.
【０００３】通路３５の下部には炉床３７が設けられて
おり、通路３５の上部にはヒータ９が設置されている。A hearth 37 is provided below the passage 35, and a heater 9 is provided above the passage 35.
【０００４】図示しない被焼成物を収容した匣３９は、
台板４１上に積み重ねられている。匣３９を載せた台板
４１は、炉床３７上に載置されて、プッシャー４３によ
り順次通路３５の内部に押し込まれる。The box 39 containing a material to be fired (not shown) is
It is stacked on the base plate 41. The base plate 41 on which the box 39 is placed is placed on the hearth 37, and is pushed into the passage 35 in sequence by the pusher 43.
【０００５】被焼成物は、匣３９に収容された状態で、
所定の温度に設定された焼成空間１３を通過することで
焼成される。The object to be fired is stored in the box 39,
Firing is performed by passing through the firing space 13 set to a predetermined temperature.
【０００６】[0006]
【発明が解決しようとする課題】上記のような連続焼成
炉では、匣または台板等の熱容量の大きな焼成治具を使
用しており、これらの焼成治具を通じて被焼成物を加熱
するため、急昇温、急冷却が難しく、長時間の焼成が必
要であった。In the continuous firing furnace as described above, firing jigs having a large heat capacity such as a box or a base plate are used, and the object to be fired is heated through these firing jigs. Rapid heating and cooling were difficult, and long-term firing was necessary.
【０００７】また、被焼成物と匣との化学反応を防止す
るためにパウダーまたはセパレータ等が必要であった。Further, powder or a separator has been required to prevent a chemical reaction between the material to be fired and the box.
【０００８】さらに、パウダーや匣を用いることによっ
て、焼成後の被焼成物からパウダーを取り除くパウダー
剥しや、被焼成物を匣に出し入れする匣入れ、匣あけと
いった工程が必要となり、コストが高くなるとともに、
作業時における被焼成物の割れ欠けが発生しやすかっ
た。[0008] Further, by using powder or a box, it is necessary to remove the powder from the object to be fired after firing, to remove the powder from the object in a box, to put the box in or out of the box, and to open the box. With
It was easy for cracks and chips to be generated during work.
【０００９】この発明の目的は、匣または台板等の熱処
理治具を使用することなく、被熱処理物の短時間熱処理
を可能とし、かつ、作業工程を減らして低コストで確実
に熱処理することができる熱処理炉を提供することにあ
る。An object of the present invention is to enable heat treatment of an object to be heat treated for a short time without using a heat treatment jig such as a box or a base plate, and to reduce the number of working steps to surely perform heat treatment at low cost. It is to provide a heat treatment furnace capable of
【００１０】[0010]
【課題を解決するための手段】この発明は、上記のよう
な問題点を解決するためになされたもので、内部に熱処
理空間を有する炉本体と、長手方向に傾斜している略円
筒状の炉芯管と、前記炉芯管を回転させる回転駆動手段
と、被熱処理物を加熱するヒータとを備えるとともに、
前記炉芯管は、略円筒状の外側炉芯管と、この外側炉芯
管の内側に設けられる内側炉芯管とからなることを特徴
とするものである。The present invention has been made to solve the above problems, and has a furnace body having a heat treatment space therein and a substantially cylindrical shape inclined in the longitudinal direction. A furnace core tube, a rotation driving means for rotating the furnace core tube, and a heater for heating an object to be heat-treated,
The furnace core tube is characterized by comprising a substantially cylindrical outer furnace core tube and an inner furnace core tube provided inside the outer furnace core tube.
【００１１】また、この発明は、前記内側炉芯管は、被
熱処理物との反応を防止することが可能な材質からなる
ことを特徴とするものである。Further, the present invention is characterized in that the inner furnace core tube is made of a material capable of preventing a reaction with an object to be heat treated.
【００１２】また、この発明は、前記炉芯管は、複数本
が炉本体に設けられていることを特徴とするものであ
る。Further, the present invention is characterized in that a plurality of the furnace core tubes are provided in the furnace body.
【００１３】さらに、この発明は、前記外側炉芯管は、
その外周に設けられたギアを有するとともに、前記回転
駆動手段は、前記ギアと係合する係合手段と、前記係合
手段を回転させる駆動源とを有することを特徴とするも
のである。Further, according to the present invention, the outer furnace core tube is
In addition to having a gear provided on the outer periphery thereof, the rotation driving means has an engagement means that engages with the gear and a drive source that rotates the engagement means.
【００１４】[0014]
【作用】この発明の熱処理炉では、長手方向に傾斜して
いる外側炉芯管と内側炉芯管とからなる炉芯管を用いる
ことによって、被熱処理物が連続的に移動する。このた
め、匣または台板等の熱容量の大きな熱処理治具が不要
となり、炉芯管による被熱処理物の急昇温、急冷却がで
きる。In the heat treatment furnace of the present invention, the object to be heat treated is continuously moved by using the furnace core tube composed of the outer furnace core tube and the inner furnace core tube inclined in the longitudinal direction. Therefore, a heat treatment jig having a large heat capacity such as a box or a base plate is not required, and the heat treatment target can be rapidly heated and cooled by the furnace core tube.
【００１５】また、回転駆動手段によって、炉芯管が回
転するので、パウダーまたはセパレータ等が不要である
にもかかわらず、被熱処理物と炉芯管との化学反応を防
止することができる。Further, since the furnace core tube is rotated by the rotation driving means, it is possible to prevent a chemical reaction between the object to be heat treated and the furnace core tube although powder or a separator is not necessary.
【００１６】また、パウダー剥し、匣入れ、および匣あ
けといった工程が不要となることにより、従来これらの
作業時に発生した被熱処理物の割れ欠けを防止できる。Further, by eliminating the steps of powder stripping, jar filling, and jar opening, it is possible to prevent cracking and chipping of the object to be heat treated which has conventionally occurred during these operations.
【００１７】さらに、炉芯管が外側炉芯管と内側炉芯管
との二重構造をしているので、外側炉芯管と内側炉芯管
とでそれぞれに適した材質または形状が選択できる。ま
た、内側炉芯管が汚れたときには内側炉芯管のみを容易
に取り替え交換できる。Further, since the furnace core tube has a double structure of the outer furnace core tube and the inner furnace core tube, a material or a shape suitable for the outer furnace core tube and the inner furnace core tube can be selected. . Further, when the inner core tube becomes dirty, only the inner core tube can be easily replaced and replaced.
【００１８】また、内側炉芯管が被熱処理物との反応を
防止することが可能な材質からなる場合には、内側炉芯
管内で被熱処理物が一時的に停止しても内側炉芯管と被
熱処理物との化学反応を防止することができる。When the inner furnace core tube is made of a material capable of preventing a reaction with the object to be heat treated, even if the object to be heat treated is temporarily stopped in the inner furnace core tube, the inner furnace core tube It is possible to prevent chemical reaction between the heat-treated material and the heat-treated material.
【００１９】また、炉芯管の複数本が炉本体に設けられ
ている場合には、一度に大量の被熱処理物を投入して熱
処理することができる。When a plurality of furnace core tubes are provided in the furnace body, a large amount of heat-treated objects can be charged at one time for heat treatment.
【００２０】さらに、外側炉芯管がその外周に設けられ
たギアを有するとともに、回転駆動手段がギアと係合す
る係合手段と、係合手段を回転させる駆動源とを有する
場合には、駆動源による回転力が係合手段に伝わり、係
合手段とギアの係合によって外側炉芯管は回転運動を行
い、それに伴って内側炉芯管も回転運動することができ
る。Further, when the outer furnace core tube has a gear provided on the outer periphery thereof, and the rotation driving means has an engaging means for engaging with the gear and a drive source for rotating the engaging means, The rotational force from the drive source is transmitted to the engagement means, and the engagement between the engagement means and the gear causes the outer core tube to rotate, and the inner core tube can also rotate accordingly.
【００２１】[0021]
【実施例】以下、図１、図２、図３、図４、図５を参照
して、この発明の熱処理炉の一実施例である連続焼成炉
について説明する。この連続焼成炉は、図１に示すよう
に、炉本体１と、炉芯管３を構成する外側炉芯管３ａお
よび内側炉芯管３ｂと、炉芯管３を回転させる回転駆動
手段５と、セラミック素材であり略円形状の被熱処理物
７を加熱するヒータ９と、炉芯管内の雰囲気ガスを調整
するガス調整管８、１０とを備えている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A continuous firing furnace, which is an embodiment of the heat treatment furnace of the present invention, will be described below with reference to FIGS. 1, 2, 3, 4, and 5. As shown in FIG. 1, this continuous firing furnace includes a furnace body 1, an outer furnace core tube 3a and an inner furnace core tube 3b that form a furnace core tube 3, and a rotation driving means 5 that rotates the furnace core tube 3. A heater 9 that heats the substantially circular object 7 that is a ceramic material and gas adjusting tubes 8 and 10 that adjust the atmospheric gas in the furnace core tube are provided.
【００２２】炉本体１は、炉本体１のフレーム部分に断
熱材１１が設けられており、その内部に熱処理空間であ
る焼成空間１３が形成されている。焼成空間１３内に
は、炉芯管３近傍の所定の位置にヒータ９および熱電対
１７が配置され、ヒータ９は熱電対１７によって測定さ
れた温度のデータを基にして、炉本体１の下部の支持台
１４内に設置されている温度制御盤１５によって制御さ
れたいる。このヒータ９は、炉芯管３の上部および下部
に互いに略平行に、また、炉芯管３に対しては直交して
設置されている。In the furnace body 1, a heat insulating material 11 is provided in a frame portion of the furnace body 1, and a firing space 13 which is a heat treatment space is formed inside the heat insulating material 11. In the firing space 13, a heater 9 and a thermocouple 17 are arranged at predetermined positions in the vicinity of the furnace core tube 3, and the heater 9 is a lower part of the furnace body 1 based on the temperature data measured by the thermocouple 17. It is controlled by a temperature control panel 15 installed in the support base 14 of the above. The heaters 9 are installed on the upper and lower portions of the furnace core tube 3 substantially in parallel with each other and orthogonal to the furnace core tube 3.
【００２３】また、炉本体１は、支持台１４に取り付け
られたアジャスター１９によって、その長手方向に沿っ
て焼成後の被熱処理物７が排出される側が下方となるよ
うに傾斜している。このアジャスター１９は、炉本体１
の傾斜角度を任意の角度に調整することができて、調整
後は炉本体１をその傾斜角度に固定する。Further, the furnace body 1 is inclined by the adjuster 19 attached to the support base 14 so that the side from which the heat-treated object 7 after firing is discharged is downward along the longitudinal direction thereof. This adjuster 19 is a furnace body 1
Can be adjusted to any angle, and after the adjustment, the furnace body 1 is fixed to that angle.
【００２４】炉芯管３は、炉本体１の長さ方向に沿っ
て、焼成空間１３を貫くように配設されており、炉芯管
３の被熱処理物投入側と被熱処理物排出側とが炉本体１
から突出し、炉本体１に設けられたベアリング２５によ
って回転可能に固定されている。また、炉芯管３は、複
数本が炉本体１に設けられており、例えば、図２に示す
ように、上下２段に水平方向にそれぞれ５本ずつ計１０
本が配設されている。なお、炉本体１の傾斜に伴って炉
芯管３も傾斜している。The furnace core tube 3 is arranged along the length direction of the furnace main body 1 so as to penetrate through the firing space 13, and the furnace core tube 3 has a heat treatment target input side and a heat treatment target discharge side. Is the furnace body 1
And is rotatably fixed by a bearing 25 provided in the furnace body 1. In addition, a plurality of furnace core tubes 3 are provided in the furnace main body 1, and for example, as shown in FIG.
Books are arranged. The furnace core tube 3 is also tilted as the furnace body 1 is tilted.
【００２５】また、炉芯管３は、外側炉芯管３ａと内側
炉芯管３ｂとが一体となった二重構造で構成されてい
る。外側炉芯管３ａは、略円筒状の形状を有しており、
長尺物が製作可能なムライト、アルミナ、ＳｉＣ質等で
形成されている。The furnace core tube 3 has a double structure in which the outer furnace core tube 3a and the inner furnace core tube 3b are integrated. The outer furnace core tube 3a has a substantially cylindrical shape,
It is made of mullite, alumina, SiC, etc., which can be used to make long products.
【００２６】また、図２に示すように、外側炉芯管３ａ
は、外周にギア２９が設けられている。このギア２９
は、外側炉芯管３ａの下部に設けられた後述するスクリ
ュー５ａと係合できるように、所定のサイズと間隔を有
している。Further, as shown in FIG. 2, the outer furnace core tube 3a
Is provided with a gear 29 on the outer circumference. This gear 29
Has a predetermined size and interval so that it can be engaged with a screw 5a, which will be described later, provided on the lower portion of the outer furnace core tube 3a.
【００２７】炉芯管３を回転させる回転駆動手段５は、
外側炉芯管３ａの外周に設けられたギア２９に係合する
係合手段であるスクリュー５ａと、このスクリュー５ａ
を回転させる駆動源である駆動モーター５ｂとからな
る。The rotation driving means 5 for rotating the furnace core tube 3 is
A screw 5a which is an engaging means for engaging a gear 29 provided on the outer periphery of the outer furnace core tube 3a, and the screw 5a.
And a drive motor 5b which is a drive source for rotating the.
【００２８】従って、スクリュー５ａが駆動モーター５
ｂと連結して回転することにより、外側炉芯管３ａおよ
び外側炉芯管３ａと一体となった内側炉芯管３ｂは、駆
動モーター５ｂによって回転する。Therefore, the screw 5a is driven by the drive motor 5
The outer furnace core tube 3a and the inner furnace core tube 3b integrated with the outer furnace core tube 3a are rotated by the drive motor 5b by being connected to b and rotating.
【００２９】内側炉芯管３ｂは、その外径寸法が外側炉
芯管３ａの内径寸法よりも小さい略円筒状の形状を有し
ており、外側炉芯管３ａの内側に設けられている。ま
た、内側炉芯管３ｂは、ＭｇＯ、ＭｇＯスピネル、Ｚｒ
Ｏ2質等で形成されている。これらの材質は、ＢａＴｉ
Ｏ3系、ＰｂＴｉＯ3系材料と反応しにくい材質なので、
ＢａＴｉＯ3系、ＰｂＴｉＯ3系の被熱処理物７と反応す
ることはない。The inner furnace core tube 3b has a substantially cylindrical shape whose outer diameter dimension is smaller than the inner diameter dimension of the outer furnace core tube 3a, and is provided inside the outer furnace core tube 3a. The inner furnace core tube 3b is made of MgO, MgO spinel, Zr.
It is made of O 2 and the like. These materials are BaTi
Since it is a material that does not easily react with O 3 and PbTiO 3 materials,
It does not react with the BaTiO 3 system or PbTiO 3 system heat-treated object 7.
【００３０】また、図１に示すように、内側炉芯管３ｂ
の被熱処理物投入側の始端部には、押さえ治具２１が設
けられ、さらに、被熱処理物排出側の終端部には、フラ
ンジ２３が設けられて、内側炉芯管３ｂを固定してい
る。また、これらは内側炉芯管３ｂが熱膨張した時の長
さに合わせて調整されている。Also, as shown in FIG. 1, the inner furnace core tube 3b
A pressing jig 21 is provided at the starting end of the object to be heat-treated, and a flange 23 is provided at the terminal end of the object to be heat-treated to fix the inner furnace core tube 3b. . Further, these are adjusted according to the length when the inner furnace core tube 3b is thermally expanded.
【００３１】ところで、内側炉芯管３ｂは、ＭｇＯ、Ｍ
ｇＯスピネル、ＺｒＯ2質の材質の場合、長さ６００ｍ
ｍ程度が製作限度である。従って、例えば外側炉芯管３
ｂの長さが１８００ｍｍ程度の場合には、外側炉芯管３
ａの内部で所定本数の内側炉芯管３ｂが連結部２７で長
手方向に連結される。By the way, the inner furnace core tube 3b is made of MgO, M
600m length for gO spinel and ZrO 2 material
The production limit is about m. Therefore, for example, the outer furnace core tube 3
When the length of b is about 1800 mm, the outer furnace core tube 3
A predetermined number of inner furnace core tubes 3b are connected in the inside of a by connecting portions 27 in the longitudinal direction.
【００３２】連結部２７は、図３、図４に示すように、
斜めに加工されている。これによって、内側炉芯管３ｂ
を連結させたときに、たとえ連結部２７に若干の隙間が
できても、図５に示すように、連結部２７を垂直に加工
したときのように、被熱処理物７が連結部２７の隙間に
つまることはない。The connecting portion 27, as shown in FIGS. 3 and 4,
It is processed diagonally. Thereby, the inner furnace core tube 3b
Even if a slight gap is formed in the connecting portion 27 when the connecting portions 27 are connected to each other, as shown in FIG. It's not boring.
【００３３】さらに、内側炉芯管３ｂは、図４に示すよ
うに、始端部から終端部にかけて、それぞれの内側炉芯
管３ｂの径が大きくなっており、内側炉芯管３ｂが若干
上下左右にずれていても被熱処理物７が引っ掛からない
ようになっている。Further, as shown in FIG. 4, the inner furnace core tube 3b is such that the diameter of each of the inner furnace core tubes 3b increases from the start end portion to the end portion, and the inner furnace core tube 3b is slightly vertically and horizontally The object 7 to be heat-treated is prevented from being caught even if it is shifted to.
【００３４】ガス調整管８、１０は、それぞれ略円筒状
の形状を有しており、一端は内側炉芯管３ｂの内部に挿
入され、他端は内側炉芯管３ｂの外部で、上下に位置す
るガス調整管８、８または１０、１０と互いに連結して
いる。このガス調整管８は、内側炉芯管３ｂの内部へ雰
囲気ガスを供給し、ガス調整管１０は、内側炉芯管３ｂ
の外部へ雰囲気ガスを排気する。炉本体１が傾斜してい
るため、雰囲気ガスは内側炉芯管３ｂの終端部から始端
部へスムーズに流動する。Each of the gas adjusting tubes 8 and 10 has a substantially cylindrical shape, one end of which is inserted into the inner furnace core tube 3b and the other end of which is vertically arranged outside the inner furnace core tube 3b. It is connected to the gas regulating tubes 8, 8 or 10, 10 which are located. The gas adjusting pipe 8 supplies atmospheric gas into the inner furnace core pipe 3b, and the gas adjusting pipe 10 supplies the inner furnace core pipe 3b.
Exhaust atmospheric gas to outside. Since the furnace body 1 is inclined, the atmospheric gas smoothly flows from the end portion to the start portion of the inner furnace core tube 3b.
【００３５】ここで、ガス調整管８、１０は、それぞれ
雰囲気ガスの供給と排気とを切り換え可能であるので、
内側炉芯管３ｂの始端部からガス調整管８（または１
０）を挿入して、ガス調整管８（または１０）から雰囲
気ガスを供給し、被熱処理物７の焼成後、始端部のガス
調整管８（または１０）から雰囲気ガスを排気するとい
うように、雰囲気ガスの供給と排気とを１本のガス調整
管８または１０で行うこともできる。Since the gas adjusting tubes 8 and 10 can switch between supplying and exhausting the atmospheric gas, respectively.
From the starting end of the inner furnace core tube 3b to the gas adjusting tube 8 (or 1
0) is inserted, the atmospheric gas is supplied from the gas adjusting pipe 8 (or 10), the atmospheric gas is exhausted from the gas adjusting pipe 8 (or 10) at the starting end after the object 7 to be heat treated is baked. It is also possible to supply and exhaust the atmospheric gas by using one gas adjusting pipe 8 or 10.
【００３６】ここでまた、炉本体１は、冷却ファン３１
が被熱処理物排出側に設置されており、炉芯管３を冷却
することができる。さらに、被熱処理物排出側に設けら
れたベルトコンベア３３は、炉本体１と略垂直方向に設
置されており、焼成された被熱処理物７をコンベア上に
載置して搬送する。Here again, the furnace body 1 is provided with a cooling fan 31.
Is installed on the discharge side of the object to be heat treated, and the furnace core tube 3 can be cooled. Further, the belt conveyor 33 provided on the discharge side of the object to be heat treated is installed in a direction substantially vertical to the furnace body 1, and the baked object to be heat treated 7 is placed on the conveyor and conveyed.
【００３７】次に、本願発明の熱処理炉を用いた熱処理
方法について説明する。 （１）まず、駆動モーター５によってスクリュー６を回
転させて、それに伴い、スクリュー６とギア２９で係合
している外側炉芯管３ａも回転させて、一体となってい
る内側炉芯管３ｂも回転させる。Next, a heat treatment method using the heat treatment furnace of the present invention will be described. (1) First, the screw 6 is rotated by the drive motor 5, and the outer furnace core tube 3a engaged with the screw 6 and the gear 29 is also rotated accordingly, so that the inner furnace core tube 3b is integrated. Also rotate.
【００３８】（２）被熱処理物７を内側炉芯管３ｂに投
入し、回転する内側炉芯管３ｂ内を始端部から終端部に
向かって、倒れ防止用の先頭被熱処理物（図示せず。）
により、倒れることなく回転しつつ進行させる。(2) The object 7 to be heat-treated is put into the inner furnace core tube 3b, and the inside of the rotating inner furnace core tube 3b is directed from the starting end to the terminal end so that the leading object to be heat-treated (not shown) is prevented. .)
This allows it to rotate and proceed without falling.
【００３９】（３）焼成空間１３内でヒータ９による加
熱によって、脱バインダーおよび本焼成を行う。(3) Debinding and main firing are performed by heating with the heater 9 in the firing space 13.
【００４０】（４）本焼成が終わると、終端部からベル
トコンベア３３上に載置されて搬送させる。(4) After the main calcination is finished, it is placed on the belt conveyor 33 from the end portion and conveyed.
【００４１】ところで、この発明は上記実施例に限定さ
れるものではなく、この発明の要旨を逸脱しない範囲に
おける変更が可能である。例えば、上記実施例のような
熱処理炉では、１０本の炉芯管が上下それぞれの水平方
向に５本ずつ配列しているが、任意本数の炉芯管を任意
の位置に配列してもよい。By the way, the present invention is not limited to the above-described embodiments, and modifications can be made without departing from the gist of the present invention. For example, in the heat treatment furnace as in the above-mentioned embodiment, 10 furnace core tubes are arranged in the upper and lower horizontal directions, 5 in each, but an arbitrary number of furnace core tubes may be arranged in an arbitrary position. .
【００４２】例えば、上記実施例では、炉芯管の大きさ
が略同一形状をなしているが、被熱処理物の大きさに応
じて、サイズの異なる炉芯管を組み合わせて構成するこ
とも可能である。For example, in the above embodiment, the furnace core tubes have substantially the same size, but it is also possible to combine furnace core tubes of different sizes according to the size of the object to be heat treated. Is.
【００４３】例えば、上記実施例では、ヒータは、炉本
体の上部および下部に互いに略平行、また炉芯管に対し
ては直交して設置されているが、炉芯管に略平行に設置
してもよいし、炉芯管の外周に略円弧状に設置してもよ
いし、炉芯管の回転の妨げとならなければ、任意の位置
に設置することも可能である。For example, in the above embodiment, the heaters are installed substantially parallel to each other on the upper and lower parts of the furnace body and orthogonal to the furnace core tube, but are installed substantially parallel to the furnace core tube. It may be installed on the outer periphery of the furnace core tube in a substantially arc shape, or may be installed at any position as long as it does not hinder the rotation of the furnace core tube.
【００４４】例えば、上記実施例では、ガス調整管は、
炉芯管の外部の他端を他の炉芯管と連結させているが、
連結させずにそれぞれ別々に雰囲気ガスの供給または排
気を行っても良いし、また、複数本のガス調整管を連結
させて雰囲気ガスの供給または排気を行っても良い。For example, in the above embodiment, the gas adjusting pipe is
Although the other end of the furnace core tube is connected to another furnace core tube,
The atmospheric gas may be supplied or exhausted separately without being connected, or the atmospheric gas may be supplied or exhausted by connecting a plurality of gas adjusting pipes.
【００４５】この発明は、さらにその他の点において
も、上記実施例に限定されるものではなく、外側炉芯管
および内側炉芯管の材質や具体的形状、ギアおよびスク
リューの材質や具体的形状、ガス調整管の具体的形状な
どに関し、この発明の要旨の範囲内において、種々の応
用、変形を加えることが可能である。The present invention is not limited to the above embodiments in other points as well, and the material and specific shape of the outer furnace core tube and the inner furnace core tube, the material and specific shape of the gear and the screw. With regard to the specific shape of the gas adjusting tube, various applications and modifications can be made within the scope of the present invention.
【００４６】[0046]
【発明の効果】この発明の熱処理炉では、匣または台板
等の熱容量の大きな熱処理治具が不要となり、炉芯管に
よる被熱処理物の急昇温、急冷却ができるので、短時間
熱処理が可能である。EFFECT OF THE INVENTION In the heat treatment furnace of the present invention, a heat treatment jig having a large heat capacity such as a box or a base plate is not required, and the heat treatment and rapid cooling of the heat treatment object by the furnace core tube can be performed, so that the heat treatment for a short time It is possible.
【００４７】また、パウダーまたはセパレータ等が不要
であるにもかかわらず、被焼成物と炉芯管との化学反応
を防止することができるので、パウダー剥しの工程が省
けるとともに、匣を用いずに熱処理を行うことができる
ので、匣入れ、匣あけの工程が不要となる。従って、作
業工程を減らし、被熱処理物を低コストで熱処理するこ
とが可能である。Further, although the powder or the separator is not necessary, the chemical reaction between the material to be fired and the furnace core tube can be prevented, so that the step of removing the powder can be omitted and the box is not used. Since the heat treatment can be performed, the steps of boxing and boxing are unnecessary. Therefore, it is possible to reduce the number of working steps and heat-treat the object to be heat-treated at low cost.
【００４８】また、パウダー剥し、匣入れ、および匣あ
けといった作業工程を省くことができるので、従来これ
らの作業時における被熱処理物の割れ欠けの発生を防止
でき、従って、被熱処理物を確実に熱処理することが可
能である。Further, since the work steps such as powder stripping, box insertion, and box opening can be omitted, it is possible to prevent the generation of cracks and cracks in the object to be heat-treated during these operations, and thus to ensure the object to be heat-treated. It can be heat treated.
【００４９】さらに、外側炉芯管と内側炉芯管との二重
構造をしているので、外側炉芯管と内側炉芯管とでそれ
ぞれに適した材質または形状が選択できるので、炉芯管
を設計するときの設計の自由度が高めることが可能であ
る。また、内側炉芯管が汚れたときには内側炉芯管のみ
を容易に取り替え交換できるので、メンテナンスを容易
にすることが可能である。Further, since the outer furnace core tube and the inner furnace core tube have a double structure, it is possible to select a material or a shape suitable for the outer furnace core tube and the inner furnace core tube, respectively. It is possible to increase the degree of freedom in design when designing the pipe. Further, when the inner furnace core tube becomes dirty, only the inner furnace core tube can be easily replaced and replaced, so that maintenance can be facilitated.
【００５０】また、内側炉芯管が被熱処理物との反応を
防止することが可能な材質からなる場合には、内側炉芯
管内で被熱処理物が一時的に停止しても内側炉芯管と被
熱処理物との化学反応を防止することができるので、よ
り一層確実に化学反応を防止することが可能である。When the inner furnace core tube is made of a material capable of preventing the reaction with the object to be heat treated, even if the object to be heat treated is temporarily stopped in the inner furnace core tube, the inner furnace core tube Since it is possible to prevent a chemical reaction between the heat-treated object and the object to be heat treated, it is possible to prevent the chemical reaction more reliably.
【００５１】また、炉芯管の複数本が炉本体に設けられ
ている場合には、一度に大量の被熱処理物を投入して熱
処理することができるので、より一層短時間で熱処理す
ることが可能である。また、それぞれの炉芯管に品種の
異なる被熱処理物を投入して熱処理することも可能であ
る。Further, when a plurality of furnace core tubes are provided in the furnace body, a large amount of heat-treated materials can be charged at the same time for heat treatment, so that heat treatment can be performed in a shorter time. It is possible. Further, it is possible to heat-treat the objects to be heat-treated with different kinds into the respective furnace core tubes.
【００５２】さらに、外側炉芯管がその外周に設けられ
たギアを有し、回転駆動手段がギアと係合する係合手段
と、係合手段を回転させる駆動源とを有する場合には、
駆動源による回転力が係合手段に伝わり、係合手段とギ
アの係合によって外側炉芯管は回転運動を行い、それに
伴って内側炉芯管も回転運動することができるので、よ
り一層スムーズな回転が可能である。Further, when the outer furnace core tube has a gear provided on the outer periphery thereof, and the rotation driving means has an engaging means for engaging the gear and a drive source for rotating the engaging means,
The rotating force from the drive source is transmitted to the engaging means, and the engagement between the engaging means and the gear causes the outer core tube to make a rotary motion, and the inner core tube can also make a rotary motion accordingly. Rotation is possible.
【図面の簡単な説明】[Brief description of drawings]
【図１】この発明の一実施例を示す一部切欠断面図。FIG. 1 is a partially cutaway sectional view showing an embodiment of the present invention.
【図２】図１のＡ−Ａ線における概略矢視図。FIG. 2 is a schematic arrow view taken along line AA of FIG.
【図３】この発明の一実施例を示す要部概略図。FIG. 3 is a schematic view of a main part showing an embodiment of the present invention.
【図４】この発明の一実施例を示す要部断面図。FIG. 4 is a cross-sectional view of an essential part showing an embodiment of the present invention.
【図５】この発明の一実施例を示す要部断面図。FIG. 5 is a cross-sectional view of an essential part showing an embodiment of the present invention.
【図６】従来の熱処理炉を示す断面図。FIG. 6 is a sectional view showing a conventional heat treatment furnace.
１ 炉本体 ３ 炉芯管 ３ａ 外側炉芯管 ３ｂ 内側炉芯管 ５ 回転駆動手段 ５ａ スクリュー（係合手段） ５ｂ 駆動モーター（駆動源） ６ スクリュー ７ セラミックユニット（被熱処理物） ８、１０ ガス調整管 ９ ヒータ １１ 断熱材 １３ 焼成空間（熱処理空間） １４ 支持台 １５ 温度制御盤 １７ 熱電対 １９ アジャスター ２１ 押さえ治具 ２３ フランジ ２５ ベアリング ２７ 連結部 ２９ ギア ３１ 冷却ファン ３３ ベルトコンベア ３５ 通路 ３７ 炉床 ３９ 匣 ４１ 台板 ４３ プッシャー 1 furnace main body 3 furnace core tube 3a outer furnace core tube 3b inner furnace core tube 5 rotation driving means 5a screw (engaging means) 5b drive motor (driving source) 6 screw 7 ceramic unit (heat-treated object) 8, 10 gas adjustment Tube 9 Heater 11 Insulation material 13 Firing space (heat treatment space) 14 Support stand 15 Temperature control board 17 Thermocouple 19 Adjuster 21 Holding jig 23 Flange 25 Bearing 27 Connecting part 29 Gear 31 Cooling fan 33 Belt conveyor 35 Passage 37 Hearth 39 Box 41 Base plate 43 Pusher
Claims (4)
手方向に傾斜している略円筒状の炉芯管と、前記炉芯管
を回転させる回転駆動手段と、被熱処理物を加熱するヒ
ータとを備えるとともに、前記炉芯管は、略円筒状の外
側炉芯管と、この外側炉芯管の内側に設けられる内側炉
芯管とからなることを特徴とする熱処理炉。1. A furnace body having a heat treatment space therein, a substantially cylindrical furnace core tube inclined in a longitudinal direction, a rotation driving means for rotating the furnace core tube, and a heater for heating an object to be heat treated. And a furnace core tube comprising a substantially cylindrical outer furnace core tube and an inner furnace core tube provided inside the outer furnace core tube.
を防止することが可能な材質からなることを特徴とする
請求項１記載の熱処理炉。2. The heat treatment furnace according to claim 1, wherein the inner furnace core tube is made of a material capable of preventing a reaction with an object to be heat treated.
れていることを特徴とする請求項１または２記載の熱処
理炉。3. The heat treatment furnace according to claim 1, wherein a plurality of the furnace core tubes are provided in the furnace body.
たギアを有するとともに、前記回転駆動手段は、前記ギ
アと係合する係合手段と、前記係合手段を回転させる駆
動源とを有することを特徴とする請求項１ないし３記載
の熱処理炉。4. The outer furnace core tube has a gear provided on the outer periphery thereof, and the rotation drive means includes an engagement means that engages with the gear, and a drive source that rotates the engagement means. The heat treatment furnace according to claim 1, further comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21137094A JP3498191B2 (en) | 1994-09-05 | 1994-09-05 | Heat treatment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21137094A JP3498191B2 (en) | 1994-09-05 | 1994-09-05 | Heat treatment furnace |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003168203A Division JP3933100B2 (en) | 2003-06-12 | 2003-06-12 | Heat treatment furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0875366A true JPH0875366A (en) | 1996-03-19 |
| JP3498191B2 JP3498191B2 (en) | 2004-02-16 |
Family
ID=16604845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21137094A Expired - Lifetime JP3498191B2 (en) | 1994-09-05 | 1994-09-05 | Heat treatment furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3498191B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312298C (en) * | 2004-12-16 | 2007-04-25 | 上海交通大学 | Push rod type resistor furnace for heat treatment |
| JP2008202919A (en) * | 2007-02-22 | 2008-09-04 | Mitsubishi Heavy Ind Ltd | Indirect heating kiln |
| JP2019078519A (en) * | 2017-10-27 | 2019-05-23 | 京セラ株式会社 | Furnace core tube |
| JP2020112288A (en) * | 2019-01-09 | 2020-07-27 | 高砂工業株式会社 | Rotary kiln |
-
1994
- 1994-09-05 JP JP21137094A patent/JP3498191B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312298C (en) * | 2004-12-16 | 2007-04-25 | 上海交通大学 | Push rod type resistor furnace for heat treatment |
| JP2008202919A (en) * | 2007-02-22 | 2008-09-04 | Mitsubishi Heavy Ind Ltd | Indirect heating kiln |
| JP2019078519A (en) * | 2017-10-27 | 2019-05-23 | 京セラ株式会社 | Furnace core tube |
| JP2020112288A (en) * | 2019-01-09 | 2020-07-27 | 高砂工業株式会社 | Rotary kiln |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3498191B2 (en) | 2004-02-16 |
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