JP2923532B2 - Cooling method in gas atmosphere furnace and gas atmosphere furnace - Google Patents
Cooling method in gas atmosphere furnace and gas atmosphere furnaceInfo
- Publication number
- JP2923532B2 JP2923532B2 JP13082290A JP13082290A JP2923532B2 JP 2923532 B2 JP2923532 B2 JP 2923532B2 JP 13082290 A JP13082290 A JP 13082290A JP 13082290 A JP13082290 A JP 13082290A JP 2923532 B2 JP2923532 B2 JP 2923532B2
- Authority
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- Japan
- Prior art keywords
- temperature
- furnace
- heating chamber
- door
- gas atmosphere
- 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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- Manufacture And Refinement Of Metals (AREA)
- Powder Metallurgy (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Description
【発明の詳細な説明】 「産業上の利用分野」 本発明は、ガス雰囲気炉における処理後の冷却時間を
短縮し得る炉内冷却方法、およびその方法を実施するた
めのガス雰囲気炉に関する。Description: TECHNICAL FIELD The present invention relates to an in-furnace cooling method capable of reducing a cooling time after treatment in a gas atmosphere furnace, and a gas atmosphere furnace for performing the method.
「従来の技術およびその課題」 第７図にガス雰囲気炉の一例としての焼結炉を示す。
これは、水冷壁構造とされた炉体１内に、断熱壁２およ
びその開口部を開閉するための扉3,3により形成される
加熱室４を配設し、それらの扉3,3を炉体１に取り付け
たシリンダ5,5により開閉するようになしたものであ
る。"Prior art and its problems" FIG. 7 shows a sintering furnace as an example of a gas atmosphere furnace.
In this method, a heating chamber 4 formed by a heat insulating wall 2 and doors 3 for opening and closing an opening thereof is disposed in a furnace body 1 having a water cooling wall structure, and the doors 3, 3 are arranged. The cylinder is opened and closed by cylinders 5 attached to the furnace body 1.
この焼結炉では、加熱室４内に被処理物を装入して扉
3,3を閉じた後に、加熱室４内に雰囲気ガスを導入して
ヒータ６により被処理物をガス雰囲気下で加熱焼結さ
せ、処理後には、加熱室４内の雰囲気ガスおよび被処理
物が十分に冷却されてから被処理物を取り出すようにし
ている。In this sintering furnace, an object to be processed is charged into a heating chamber 4 and a door is opened.
After closing 3 and 3, an atmosphere gas is introduced into the heating chamber 4 and the object to be processed is heated and sintered in a gas atmosphere by the heater 6, and after the processing, the atmosphere gas and the object to be processed in the heating chamber 4 are heated. Is cooled sufficiently, and then the object to be processed is taken out.
第８図は上記の焼結炉における操業時の炉温（加熱室
４内の温度）の変化状態を示すものである。この図に示
されるように、操業開始時刻t0においてヒータ６に通電
して昇温を開始し、時刻t1から時刻t2までの間にわたっ
て所定の処理温度に保持して熱処理を行う。そして、処
理が完了した時刻t2の時点でヒータ６に対する通電を停
止して冷却工程に移行するのであるが、炉温が漸次低下
していって所定の設定温度Tsに達した時刻t3において加
熱室４の扉3,3を開くようにしている。このようにする
ことにより、加熱室４内から雰囲気ガスが流出して水冷
壁構造となっている炉体１によって冷却され、冷却が促
進されることになる。FIG. 8 shows how the furnace temperature (the temperature in the heating chamber 4) changes during the operation of the above-mentioned sintering furnace. As shown in this figure, the temperature increase was initiated by energizing the heater 6 at the operation starting time t 0, for holding to a heat treatment to a predetermined processing temperature for the period from time t 1 to time t 2. Then, the processing than is the process proceeds to the cooling step to stop energization to the heater 6 at time t 2 has been completed, at time t 3 when it began to decrease furnace temperature is gradually reaches a predetermined set temperature Ts The doors 3, 3 of the heating chamber 4 are opened. By doing so, the atmospheric gas flows out of the heating chamber 4 and is cooled by the furnace body 1 having a water-cooled wall structure, thereby promoting cooling.
ところで、上記の焼結炉において処理後の冷却時間を
短縮するためには、加熱室４の扉3,3をできるだけ早期
に開く、すなわち、上記の設定温度Tsをできるだけ高く
設定しておくことが良いのであるが、加熱室４内の雰囲
気ガスが十分に高温であるときに扉3,3を開くと、その
高温の雰囲気ガスにより炉体１内の各種部品等が熱損傷
を受けてしまう恐れがある。By the way, in order to shorten the cooling time after the treatment in the above-mentioned sintering furnace, the doors 3, 3 of the heating chamber 4 are opened as early as possible, that is, the above-mentioned set temperature Ts is set as high as possible. Although it is good, if the doors 3 and 3 are opened when the atmosphere gas in the heating chamber 4 is sufficiently high temperature, various parts in the furnace body 1 may be thermally damaged by the high temperature atmosphere gas. There is.
このため、従来においては、加熱室４内の雰囲気ガス
の温度が上記のような問題を生じない程度に低下するま
では扉3,3を閉じたままにしておく必要があって、上記
の設定温度Tsをあまり高くできないものであり、したが
って、冷却時間が長くかかって被処理物を取り出すまで
に長時間を要し、生産効率が良くないという欠点があっ
た。For this reason, conventionally, it is necessary to keep the doors 3, 3 closed until the temperature of the atmospheric gas in the heating chamber 4 drops to such an extent that the above-mentioned problem does not occur. Since the temperature Ts cannot be increased too much, the cooling time is long, so that it takes a long time to take out the object to be processed, and the production efficiency is not good.
本発明は上記の事情に鑑みてなされたもので、処理後
の冷却時間を短縮し得る炉内冷却方法、およびその方法
を実施するためのガス雰囲気炉を提供することを目的と
している。The present invention has been made in view of the above circumstances, and has as its object to provide an in-furnace cooling method capable of shortening a cooling time after treatment, and a gas atmosphere furnace for performing the method.
「課題を解決するための手段」 上記目的を達成するため、請求項１の発明は、水冷壁
構造とされた炉体の内部に断熱壁からなる加熱室が配設
され、その加熱室内においてガス雰囲気下で被処理物に
対して熱処理を行うように構成されたガス雰囲気炉にお
ける処理後の炉内冷却方法であって、処理終了後に加熱
室と炉体との間の空間の温度を測定し、その測定結果に
基づいて前記室の扉の開度を調節することを特徴とする
ものである。Means for Solving the Problems In order to achieve the above object, according to the invention of claim 1, a heating chamber composed of a heat insulating wall is provided inside a furnace body having a water-cooled wall structure, and a gas chamber is provided in the heating chamber. A method for cooling the inside of a furnace in a gas atmosphere furnace configured to perform a heat treatment on an object to be processed in an atmosphere, wherein a temperature of a space between a heating chamber and a furnace body is measured after the processing. The opening degree of the door of the chamber is adjusted based on the measurement result.
また、請求項２の発明は、水冷壁構造とされた炉体の
内部に断熱壁からなる加熱室が配設され、その加熱室内
においてガス雰囲気下で被処理物に対して熱処理を行う
ように構成されたガス雰囲気炉であって、加熱室と炉体
との間の空間の温度を測定するための温度センサと、そ
の温度センサの検出値に基づいて前記加熱室の扉の開閉
装置を制御して該扉の開度を調節する制御装置とを具備
してなることを特徴とするものである。According to a second aspect of the present invention, a heating chamber formed of a heat insulating wall is provided inside a furnace body having a water-cooled wall structure, and heat treatment is performed on an object to be processed under a gas atmosphere in the heating chamber. A configured gas atmosphere furnace, wherein a temperature sensor for measuring a temperature of a space between the heating chamber and the furnace body, and a door opening / closing device of the heating chamber is controlled based on a detection value of the temperature sensor. And a control device for adjusting the opening of the door.
「作用」 請求項１の発明の冷却方法では、処理終了後に加熱室
の扉を早期に開いて高温の雰囲気ガスを加熱室外に流出
させることで冷却を促進するが、加熱室と炉体との間の
空間の温度が過度に上昇して許容温度を越えないよう
に、上記空間の温度に基づいて扉の開度を調節して雰囲
気ガスの流出量を調節する。[Operation] In the cooling method according to the first aspect of the present invention, cooling is promoted by opening the door of the heating chamber at an early stage after the treatment is completed and allowing the high-temperature atmosphere gas to flow out of the heating chamber. The opening degree of the door is adjusted based on the temperature of the space so as to adjust the outflow amount of the atmospheric gas so that the temperature of the space therebetween does not excessively rise and exceed the allowable temperature.
また、請求項２の発明のガス雰囲気炉では、温度セン
サによって検出された上記空間の温度に基づいて、扉の
開閉装置の作動を制御して扉の開度を自動的に調節す
る。In the gas atmosphere furnace according to the second aspect of the invention, the operation of the door opening / closing device is controlled based on the temperature of the space detected by the temperature sensor to automatically adjust the opening of the door.
「実施例」 以下、本発明の一実施例を第１図〜第３図を参照して
説明する。Embodiment An embodiment of the present invention will be described below with reference to FIGS.
第１図は本実施例の焼結炉の概略構成を示すものであ
るが、この炉は上述した従来のものを基本構成とするも
のであるので両者に共通の部分には同一符号を付して詳
細な説明は省略する。FIG. 1 shows a schematic configuration of a sintering furnace according to the present embodiment. Since this furnace has a basic configuration of the above-mentioned conventional one, the same reference numerals are given to parts common to both. Detailed description is omitted.
本実施例の焼結炉が従来のものと異なる点は、冷却時
に、加熱室４と炉体１との間の空間10の温度に基づいて
加熱室４の扉3,3を自動的に開閉するための装置が付加
された点にある。The difference between the sintering furnace of the present embodiment and the conventional one is that the doors 3, 3 of the heating chamber 4 are automatically opened and closed based on the temperature of the space 10 between the heating chamber 4 and the furnace body 1 during cooling. The point is that a device for performing the operation is added.
すなわち、上記空間10内には温度センサ11が取り付け
られており、その温度センサ11の検出値Taは、扉3,3を
開閉させるためのシリンダ（開閉装置）5,5を制御する
制御装置12に入力されるようになっている。That is, a temperature sensor 11 is mounted in the space 10, and a detection value Ta of the temperature sensor 11 is a control device 12 that controls cylinders (opening / closing devices) 5,5 for opening and closing the doors 3,3. To be entered.
御御装置12は、温度センサ11の検出値Taを予め設定さ
れている設定値T0と比較し、検出値Taが設定値T0以上で
あるときにはシリンダ5,5を作動させて扉3,3を強制的に
閉じるようにされている。その設定値T0は、炉体１内の
各種部品が熱損傷を受けることのない許容限度の温度に
設定されている。Control control unit 12 compares the set value T 0 which is set in advance the detected value Ta of the temperature sensor 11, the detected value Ta is preset value T 0 or more than that by operating the cylinder 5 and 5 when door 3, 3 is forcibly closed. The set value T 0 is set to an allowable limit temperature at which various components in the furnace body 1 are not damaged by heat.
また、この制御装置12は、検出値Taが設定値T0以下で
あるときにはそれらの温度差ΔＴ＝T0−Taを演算し、そ
の演算結果に基づいてシリンダ5,5の作動を制御して第
２図に示すように扉3,3の開度を調節するようになって
いる。つまり、温度差ΔＴが小さい場合には扉3,3の開
度を小さくし、これによって加熱室４から上記空間10へ
の雰囲気ガスの流出量を低減せしめて空間10内の温度上
昇を抑制し、逆に、温度差ΔＴが大きい場合には扉3,3
の開度を大きくし、これによって加熱室４からの雰囲気
ガスの流出量を増大せしめて空間10内の温度が設定値T0
に近付くまでその温度上昇を許すのである。Further, the control device 12 when the detected value Ta is equal to or smaller than the set value T 0 is computed their temperature difference [Delta] T = T 0 -Ta, and controls the operation of the cylinder 5 and 5 on the basis of the calculation result As shown in FIG. 2, the opening of the doors 3, 3 is adjusted. That is, when the temperature difference ΔT is small, the opening degree of the doors 3, 3 is reduced, whereby the amount of the atmospheric gas flowing out of the heating chamber 4 to the space 10 is reduced, and the temperature rise in the space 10 is suppressed. Conversely, if the temperature difference ΔT is large, the door 3,3
Is increased, thereby increasing the outflow amount of the atmospheric gas from the heating chamber 4 so that the temperature in the space 10 becomes equal to the set value T 0.
Allow the temperature to rise until the temperature approaches.
この場合、上記の温度差ΔＴと扉3,3の開度との関係
は、第２図に実線で示すように温度差ΔＴが大きくなる
ほど直線的（一次関数的）に増大させるようにしても良
いし、あるいは、鎖線で示すように曲線的（二次関数
的）に増大させるようにしても良い。また、温度差ΔＴ
が十分に大きくなった場合、つまり空間10内の温度が許
容温度より十分に低い場合には、扉3,3を全開させてし
まえば良い。In this case, the relationship between the temperature difference ΔT and the degree of opening of the doors 3, 3 may be increased linearly (linear function) as the temperature difference ΔT increases as shown by the solid line in FIG. It may be good, or may be increased in a curved line (quadratic function) as shown by a chain line. Also, the temperature difference ΔT
Is sufficiently large, that is, when the temperature in the space 10 is sufficiently lower than the allowable temperature, the doors 3, 3 may be fully opened.
なお、上記の温度センサ11の設置位置は、空間10内の
温度が最も高くなる炉体１内の最頂部に設けることが良
い。また、必要に応じて、第１図に示すように、断熱壁
２の外表面温度および炉体１の内面温度を検出するため
の温度センサ15,16を設け、それらの温度センサ15,16の
検出値によって上記温度センサ11の検出値Taを補正する
ようにしても良い。The temperature sensor 11 is preferably installed at the top of the furnace 1 where the temperature in the space 10 is highest. If necessary, as shown in FIG. 1, temperature sensors 15 and 16 for detecting the outer surface temperature of the heat insulating wall 2 and the inner surface temperature of the furnace body 1 are provided. The detection value Ta of the temperature sensor 11 may be corrected based on the detection value.
第３図はこの焼結炉による操業での炉温（加熱室４内
の温度）の変化状態、および温度センサ11の検出値（空
間10内の温度）の変化状態を示すものである。FIG. 3 shows a change state of the furnace temperature (the temperature in the heating chamber 4) and a change state of the detection value of the temperature sensor 11 (the temperature in the space 10) in the operation of the sintering furnace.
この図に示すように、従来の焼結炉による場合と同様
に、操業開始時刻t0においてヒータ６に通電して昇温を
開始し、時刻t1から時刻t2までの間にわたって所定の処
理温度に保持して熱処理を行う。この段階までは扉3,3
を強制的に閉じておくことにより、空間10内の温度すな
わち温度センサ11の検出値Taは、その空間10の許容温度
である上記の設定値T0より低く保持されて、それらの温
度差ΔＴは十分に大きなものとなっている。As shown in this figure, as in the case of the conventional sintering furnace, the Atsushi Nobori is initiated by energizing the heater 6 at the operation starting time t 0, a predetermined process over a period from time t 1 to time t 2 Heat treatment is performed while maintaining the temperature. Doors 3,3 up to this stage
, The temperature in the space 10, that is, the detection value Ta of the temperature sensor 11 is kept lower than the set value T 0, which is the allowable temperature of the space 10, and the temperature difference ΔT Is large enough.
そして、処理が完了した時刻t2の時点でヒータ６に対
する通電を停止して冷却工程に移行するが、この時点で
直ちに扉3,3を一旦開くこととする。And while the process proceeds to stop energization to the heater 6 at time t 2 which completed the cooling process, and to open immediately the door 3,3 once at this point.
すると、炉温は漸次低下していくが、加熱室４から高
温の雰囲気ガスが流出して空間10内の温度は上昇してい
くことになる。これに伴い、上記の温度差ΔＴは急激に
小さくなり、それに応じてシリンダ5,5が作動して扉3,3
の開度が小さくなって雰囲気ガスの流出量が抑制される
が、調節が追い付かずに温度センサ11の検出値Taが設定
値T0に達すると（ΔＴ＝０となると）、扉3,3が全閉と
なって雰囲気ガスの流出が停止する。そして、空間10内
に流出した高温の雰囲気ガスが水冷壁構造の炉体１によ
り冷却されてその温度が低下すると、温度差ΔＴが再び
大きくなり、シリンダ5,5が作動して扉3,3の開度が大き
くなっていく。Then, the furnace temperature gradually decreases, but a high-temperature atmosphere gas flows out of the heating chamber 4 and the temperature in the space 10 increases. Accordingly, the temperature difference ΔT rapidly decreases, and the cylinders 5,5 operate accordingly to operate the doors 3,3.
Opening but is turned outflow atmospheric gas is suppressed small, and adjustment reaches the detection value Ta is set value T 0 of the temperature sensor 11 to not catch up ([Delta] T = 0 when it comes to), the door 3,3 Is completely closed, and the outflow of the atmospheric gas stops. Then, when the high-temperature atmosphere gas flowing into the space 10 is cooled by the furnace 1 having the water-cooled wall structure and its temperature decreases, the temperature difference ΔT increases again, and the cylinders 5,5 operate to open the doors 3,3. Opening increases.
そのようにして扉3,3が開閉を繰り返す間に炉温は漸
次低下していき、扉3,3が閉じている時間が漸次短くな
っていくとともに、開閉の間隔も漸次大きくなってい
き、やがて、温度差ΔＴが十分に大きくなって扉3,3が
全開とされたままとなる。In this manner, the furnace temperature gradually decreases while the doors 3 and 3 are repeatedly opened and closed, the time during which the doors 3 and 3 are closed is gradually reduced, and the opening and closing interval is gradually increased, Eventually, the temperature difference ΔT becomes sufficiently large, and the doors 3, 3 remain fully opened.
上記のように、処理終了後に直ちに扉3,3を開いて高
温の雰囲気ガスを加熱室４の外部に流出させ、その雰囲
気ガスを炉体１により早期から冷却することにより、雰
囲気ガスの温度が十分に低下するまで扉3,3を閉じてお
く従来の場合に比して冷却時間を短縮することができ
る。そして、温度センサ11により検出される空間10内の
温度と、空間10の許容温度との温度差に応じて、空間10
内の温度が許容温度を越えないように制御装置12がシリ
ンダ5,5を制御して扉3,3の開度を調節するので、炉体１
内の各種部品が熱損傷を受けてしまうようなことも確実
に防止される。As described above, the doors 3, 3 are opened immediately after the treatment is completed, the high-temperature atmosphere gas is caused to flow out of the heating chamber 4, and the atmosphere gas is cooled by the furnace 1 at an early stage, so that the temperature of the atmosphere gas is reduced. The cooling time can be reduced as compared with the conventional case where the doors 3, 3 are closed until the temperature is sufficiently lowered. Then, according to the temperature difference between the temperature in the space 10 detected by the temperature sensor 11 and the allowable temperature of the space 10, the space 10
The control device 12 controls the cylinders 5,5 to adjust the opening of the doors 3,3 so that the temperature inside the furnace does not exceed the allowable temperature.
It is also possible to reliably prevent the various components inside from being damaged by heat.
なお、処理終了後に直ちに扉3,3を開くことから、扉
3,3を開いた際に炉体１内面が輻射熱を直接的に受けて
しまってその部分が局所的な熱損傷を起こす恐れがある
ため、たとえば第４図に示すように、炉体１内面の輻射
熱を直接的に受ける部分に防熱用の断熱材20を取り付け
ておいたり、あるいは、炉体１内面が輻射熱を直接的に
受けることがないように、たとえば第５図に示すように
凸状断面の扉21を採用する等の対策を講じることが望ま
しい。The doors 3 and 3 are opened immediately after the process is completed.
When the inner surface of the furnace body 1 is opened, the inner surface of the furnace body 1 may directly receive the radiant heat to cause local thermal damage. For example, as shown in FIG. A heat insulating material 20 for preventing heat is attached to a portion directly receiving the radiant heat, or a convex shape as shown in FIG. 5 so that the inner surface of the furnace body 1 does not directly receive the radiant heat. It is desirable to take measures such as adopting a door 21 having a cross section.
また、加熱室からの雰囲気ガスの流出量を広範囲にわ
たって調節するために、第６図に示すような扉30を採用
することも考えられる。第６図に示すものは、縦置きさ
れた加熱室31の上面に設けられた開口部32を大扉33によ
り開閉するとともに、その大扉33に設けられた開口部34
を小扉35により開閉するようにしたもので、大扉33、小
扉35の双方が閉じている状態からシリンダ５を作動させ
ると、まず小扉35のみが上昇して開口部34が所定の開度
となるまで開かれ、その開口部34が全開となった後は、
小扉35に連結部材36により連結されている大扉33が小扉
35とともに上昇して開口部32が所定の開度となるまで開
かれるようにされたものである。このような扉30を採用
することにより、雰囲気ガスの加熱室31からの流出量を
広範囲にわたって細かく調節することができる。It is also conceivable to employ a door 30 as shown in FIG. 6 in order to adjust the outflow amount of the atmospheric gas from the heating chamber over a wide range. FIG. 6 shows an opening 32 provided on the upper surface of a vertically placed heating chamber 31 which is opened and closed by a large door 33, and an opening 34 provided in the large door 33.
Is opened and closed by the small door 35. When the cylinder 5 is operated from a state in which both the large door 33 and the small door 35 are closed, only the small door 35 first rises and the opening 34 It is opened until the opening is reached, and after the opening 34 is fully opened,
The large door 33 connected to the small door 35 by the connecting member 36 is a small door
It rises with 35 and is opened until the opening 32 reaches a predetermined opening degree. By employing such a door 30, the amount of atmospheric gas flowing out of the heating chamber 31 can be finely adjusted over a wide range.
「発明の効果」 以上で詳細に説明したように、請求項１の発明の方法
は、処理終了後に加熱室と炉体との間の空間の温度を測
定し、その測定結果に基づいて加熱室の扉の開度を調節
するので、上記空間の温度が過度に上昇して炉体内の各
種部品の熱損傷を招くことなく、処理終了後に直ちに扉
を開くことにより雰囲気ガスを加熱室外に流出させて冷
却を促進することが可能となり、その結果、冷却時間を
短縮できて生産効率の向上を図ることができる、という
効果を奏する。[Effects of the Invention] As described in detail above, the method of the first aspect of the present invention measures the temperature of the space between the heating chamber and the furnace after the processing is completed, and based on the measurement result, determines the heating chamber. The opening of the door is adjusted, so that the temperature of the space does not excessively increase and thermal damage to various parts in the furnace is not caused, and the atmosphere gas flows out of the heating chamber by opening the door immediately after the treatment is completed. As a result, the cooling time can be shortened and the production efficiency can be improved.
また、請求項２の発明は、加熱室と炉体との間の空間
の温度を測定するための温度センサと、その温度センサ
の検出値に基づいて加熱室の扉の開閉装置を制御して該
扉の開度を調節する制御装置とを具備してなるものであ
るから、上記空間の温度に応じて扉の開閉を自動的にか
つ確実に行うことができ、また、扉の開度の調節を行う
ことも可能であり、上記方法を実施するための炉として
用いて好適である。The invention according to claim 2 controls the temperature sensor for measuring the temperature of the space between the heating chamber and the furnace body, and controls the opening / closing device of the door of the heating chamber based on the detection value of the temperature sensor. And a control device for adjusting the opening of the door, the door can be automatically and reliably opened and closed according to the temperature of the space, and the opening of the door can be controlled. Adjustment is also possible and is suitable for use as a furnace for carrying out the method.
第１図〜第３図は本発明の一実施例を示すもので、第１
図は本実施例の焼結炉の概略構成を示す側断面図、第２
図は温度差と扉の開度との関係を示す図、第３図は操業
時における炉温および温度センサの検出値の変化状態を
示す図である。 第４図〜第６図はそれぞれ本発明の他の構成例を示す側
断面図である。 第７図は従来の焼結炉の概略構成を示す側断面図、第８
図は従来の焼結炉における炉温の変化状態を示す図であ
る。 １……炉体、２……断熱壁、３……扉、４……加熱室、
５……シリンダ（開閉装置）、６……ヒータ、10……空
間、11……温度センサ、12……制御装置、21,30……
扉。1 to 3 show one embodiment of the present invention.
FIG. 2 is a side sectional view showing a schematic configuration of the sintering furnace of this embodiment, and FIG.
The figure shows the relationship between the temperature difference and the degree of opening of the door, and FIG. 3 shows the change in the furnace temperature and the detection value of the temperature sensor during operation. 4 to 6 are side sectional views showing other examples of the configuration of the present invention. FIG. 7 is a side sectional view showing a schematic configuration of a conventional sintering furnace, and FIG.
FIG. 1 is a diagram showing a change in furnace temperature in a conventional sintering furnace. 1 ... furnace body, 2 ... insulated wall, 3 ... door, 4 ... heating room,
5 ... cylinder (opening / closing device), 6 ... heater, 10 ... space, 11 ... temperature sensor, 12 ... control device, 21, 30 ...
door.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F27B 5/00 - 5/18 F27B 17/00 F27D 7/00 - 7/06 B22F 3/10 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 6 , DB name) F27B 5/00-5/18 F27B 17/00 F27D 7/00-7/06 B22F 3/10
Claims (2)
らなる加熱室が配設され、その加熱室内においてガス雰
囲気下で被処理物に対して熱処理を行うように構成され
たガス雰囲気炉における処理後の炉内冷却方法であっ
て、処理終了後に加熱室と炉体との間の空間の温度を測
定し、その測定結果に基づいて前記加熱室の扉の開度を
調節することを特徴とするガス雰囲気炉における炉内冷
却方法。1. A gas chamber, wherein a heating chamber comprising a heat insulating wall is provided inside a furnace body having a water-cooled wall structure, and a heat treatment is performed on an object to be processed in a gas atmosphere in the heating chamber. An in-furnace cooling method after processing in an atmosphere furnace, in which after the processing is completed, the temperature of the space between the heating chamber and the furnace body is measured, and the opening degree of the heating chamber door is adjusted based on the measurement result. A method for cooling the inside of a furnace in a gas atmosphere furnace.
らなる加熱室が配設され、その加熱室内においてガス雰
囲気下で被処理物に対して熱処理を行うように構成され
たガス雰囲気炉であって、加熱室と炉体との間の空間の
温度を測定するための温度センサと、その温度センサの
検出値に基づいて前記加熱室の扉の開閉装置を制御して
該扉の開度を調節する制御装置とを具備してなることを
特徴とするガス雰囲気炉。2. A heating chamber comprising a heat insulating wall is provided inside a furnace body having a water-cooling wall structure, and a heat treatment is performed on an object to be processed in a gas atmosphere in the heating chamber. An atmosphere furnace, a temperature sensor for measuring a temperature of a space between the heating chamber and the furnace body, and controlling a door opening / closing device of the heating chamber based on a detection value of the temperature sensor to control the temperature of the door. A gas atmosphere furnace comprising a control device for adjusting an opening degree of the gas atmosphere furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13082290A JP2923532B2 (en) | 1990-05-21 | 1990-05-21 | Cooling method in gas atmosphere furnace and gas atmosphere furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13082290A JP2923532B2 (en) | 1990-05-21 | 1990-05-21 | Cooling method in gas atmosphere furnace and gas atmosphere furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0426723A JPH0426723A (en) | 1992-01-29 |
| JP2923532B2 true JP2923532B2 (en) | 1999-07-26 |
Family
ID=15043527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13082290A Expired - Fee Related JP2923532B2 (en) | 1990-05-21 | 1990-05-21 | Cooling method in gas atmosphere furnace and gas atmosphere furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2923532B2 (en) |
-
1990
- 1990-05-21 JP JP13082290A patent/JP2923532B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0426723A (en) | 1992-01-29 |
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