JPH08178535A - Multi-chamber type heat processing furnace - Google Patents

Multi-chamber type heat processing furnace

Info

Publication number
JPH08178535A
JPH08178535A JP34078494A JP34078494A JPH08178535A JP H08178535 A JPH08178535 A JP H08178535A JP 34078494 A JP34078494 A JP 34078494A JP 34078494 A JP34078494 A JP 34078494A JP H08178535 A JPH08178535 A JP H08178535A
Authority
JP
Japan
Prior art keywords
chamber
processing
quenching
main transfer
processed
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.)
Granted
Application number
JP34078494A
Other languages
Japanese (ja)
Other versions
JP3490791B2 (en
Inventor
Shigeki Maruido
茂樹 丸井戸
Hirofumi Hashimoto
弘文 橋本
Harumi Yamada
春美 山田
Shuichi Maeda
修一 前田
Original Assignee
Koyo Rindobaagu Kk
光洋リンドバーグ株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Koyo Rindobaagu Kk, 光洋リンドバーグ株式会社 filed Critical Koyo Rindobaagu Kk
Priority to JP34078494A priority Critical patent/JP3490791B2/en
Publication of JPH08178535A publication Critical patent/JPH08178535A/en
Application granted granted Critical
Publication of JP3490791B2 publication Critical patent/JP3490791B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE: To increase an efficiency of utilization of composing substances of a heat processing furnace and further to enable multi-kinds and low amount of production to be carried out by a method wherein a plurality of processing chambers and front chambers are connected and arranged side by side in a replaceable manner to each of connecting ports arranged to be contacted at their circumferences to the same cylindrical surface which is coaxial with a vertical rotating shaft in respect to a main transferring chamber. CONSTITUTION: Material to be processed is loaded or unloaded through a vacuum purging chamber 1, purged in vacuum and its pressure is recovered with nitrogen gas and then the material is fed into a main transporting chamber 2. A main transporting means 3 of the main transporting chamber 2 can be rotated within a horizontal plane, can be stopped at an opposing position against each of the optional chambers around it (for example, a burn-off chamber 4, vacuum sintering chambers 5, 6 and a cooling chamber 7) and further can transport the processed material from any optional chamber to another optional chamber. Accordingly, a plurality of different processings can be performed concurrently in parallel from each other in response to the case and at the same time a plurality of processing chambers 4 to 7 can be continuously applied for processing in a time-series manner. With such an arrangement as above, an efficiency of utilization of the composing segments of the device can be increased and then multi-kinds and low amount production can be carried out.

Description

【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【産業上の利用分野】本発明は加工部材の熱処理装置に
関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for heat treating a processed member.
【0002】[0002]
【従来の技術】鋼加工部材に浸炭焼入れを行う場合、前
洗浄、浸炭、油焼入れ、後洗浄、焼戻しなどの一連の工
程が行われる。金型部材などの真空焼入れを行う場合
は、真空加熱に引き続き、ガス冷却が行われる。また金
属やセラミック等の粉末冶金部材の焼結を行う場合は、
バインダーのバーンオフ、加熱、徐冷、冷却などの一連
の工程が行われる。これら一連の工程の実施にあたり、
従来より使用されていた熱処理設備として、各工程また
は2工程を実施するための各バッチ式処理装置をそれぞ
れ独立に配置したものや、それら一連の工程を連続的に
実施するため、各処理室を直列に連結配置した連続処理
設備がある。
2. Description of the Related Art When carburizing and quenching steel-worked members, a series of steps such as pre-cleaning, carburizing, oil-quenching, post-cleaning, and tempering are performed. When vacuum quenching a mold member or the like, gas cooling is performed subsequent to vacuum heating. When sintering powder metallurgical members such as metals and ceramics,
A series of steps including binder burn-off, heating, slow cooling, and cooling are performed. In carrying out these series of steps,
As the heat treatment equipment that has been conventionally used, each batch type processing device for carrying out each step or two steps is independently arranged, or each processing chamber is continuously operated to carry out a series of these steps. There is continuous processing equipment connected in series.
【0003】バッチ式浸炭焼入れ炉は前室と加熱室、前
室の下部には昇降手段を備えた焼入れ油槽とが設けら
れ、浸炭・拡散処理された被処理部材は、焼入れ温度ま
で温度降下されて引き続き加熱室で所定時間均熱保持さ
れた後、前室に搬出されて直ちに油焼入れされるように
なっている。油冷後の被処理部材は昇降手段により焼入
れ油槽の上に持ち上げられて前室中で油切りされた後、
装置外へ搬出される。次に被処理部材は、別途設置され
た洗浄機内へ搬入されて焼入れ油を洗浄除去され、乾燥
された後搬出されて、別途設置された焼戻し炉へれら
れ、そこで焼戻し処理を受ける。
A batch type carburizing and quenching furnace is provided with a front chamber and a heating chamber, and a quenching oil tank provided with an elevating means at the lower part of the front chamber, and the temperature of the carburized and diffused treated member is lowered to the quenching temperature. Then, after being soaked and maintained in the heating chamber for a predetermined time, it is carried out to the previous chamber and immediately oil-quenched. After the oil-cooled member to be processed is lifted up by the elevating means above the quenching oil tank and drained in the front chamber,
It is carried out of the equipment. Next, the member to be treated is carried into a separately installed cleaning machine to wash and remove the quenching oil, dried and carried out, and then transferred to a separately installed tempering furnace, where it is subjected to tempering treatment.
【0004】単室式真空焼入れ炉は、単室内に加熱機構
とガス冷却装置とを備え、焼入れ温度で所定時間加熱さ
れた部材は、同一室内でただちにガス冷却を行うように
なっている。
The single-chamber vacuum quenching furnace is equipped with a heating mechanism and a gas cooling device in the single chamber, and members heated at a quenching temperature for a predetermined time immediately cool the gas in the same chamber.
【0005】バッチ焼結設備の場合、バーンオフから焼
結、冷却までの全工程を同一室で行うものと、バーンオ
フ炉と焼結炉とをそれぞれ別個に設置したものとがあ
る。後者の場合、被処理部材は焼結工程終了後ただちに
同一室内で冷却工程に入る。尚、焼結後の冷却速度につ
いては、上記二例とは異なり、被処理品の特性上の要求
によるものはさほどないため、通常は余り問題にされる
ことはない。
In the case of batch sintering equipment, there are one in which all steps from burn-off to sintering and cooling are performed in the same chamber, and one in which a burn-off furnace and a sintering furnace are separately installed. In the latter case, the member to be processed enters the cooling process in the same chamber immediately after the completion of the sintering process. Unlike the above two examples, the cooling rate after sintering does not depend on the characteristics of the object to be processed, so that it is not usually a problem.
【0006】連続処理設備の場合、各工程がそれぞれ別
の処理室または処理区域および各室それぞれの通過時間
または滞在時間に割り当てられており、バッチ処理式設
備のように同一の処理室で複数の工程が行われることが
ない。
In the case of continuous processing equipment, each process is assigned to a different processing room or processing area and a passing time or a staying time of each room, and like a batch processing type equipment, a plurality of processes are performed in the same processing room. The process is never performed.
【0007】[0007]
【発明が解決しようとする課題】従来のバッチ式浸炭焼
入れ炉の場合、処理量を増やすには炉の設置台数を増や
す必要があるが、焼入れ油槽の数も自動的に増えること
になる。しかし、油焼入れ・油切りに要する時間は、浸
炭・拡散・均熱時間に比べて通常著しく短い。言い換え
ると焼入れ油槽の利用効率が著しく低いと言うことにな
る。従って投資効率の悪い設備となっていた。前室関係
の搬送機構、昇降手段、ガス配管、排気配管、真空ポン
プ等の排気系、電磁弁などの制御弁、圧力計等の計測機
器などについても同様のことが言える。また、複数のバ
ッチ装置間の装入搬出を各装置の前を走行する軌道台車
によって行うため、設備コストのみならず設置面積が大
きい、作業者が台車の走行に注意を怠れば危険である、
等の問題があった。
In the case of the conventional batch type carburizing and quenching furnace, it is necessary to increase the number of furnaces installed in order to increase the throughput, but the number of quenching oil tanks also automatically increases. However, the time required for oil quenching / oil removal is usually significantly shorter than the time for carburizing / diffusion / soaking. In other words, the utilization efficiency of the quenching oil tank is extremely low. Therefore, it was a facility with poor investment efficiency. The same applies to the transport mechanism related to the antechamber, the lifting means, the gas pipe, the exhaust pipe, the exhaust system such as the vacuum pump, the control valve such as the solenoid valve, and the measuring device such as the pressure gauge. In addition, since loading and unloading between a plurality of batch devices is performed by a track trolley that travels in front of each device, not only equipment cost but also a large installation area, it is dangerous if an operator neglects to pay attention to traveling of the trolley,
There was a problem such as.
【0008】従来の単室式真空焼入れ炉の場合、同一室
内に、互いに反対機能を持つ二つの手段、即ちヒータと
断熱材から成る加熱密閉断熱手段と、ガス導入管、ファ
ン、ガス冷却器から成る循環冷却手段とを収容し、且つ
工程によって両機能を切り替えるための第三の手段を有
する必要があった。このため装置内部の構成が複雑とな
り、装置寸法が大きくなり、コストも高くならざるを得
なかった。またこの装置により生産量を上げる場合、設
置台数を増やすことになるが、焼入れのためのガス冷却
時間に比べて加熱時間が長いことから考えて、前記同様
の理由により循環冷却手段および切り替え手段の利用効
率が低いという問題があった。さらに、冷却時は被処理
部材のみならず加熱断熱手段も同時に冷却されることに
なるので、被処理物が要求する一定の冷却速度を達成す
るためには、能力の大きい冷却手段を採用する必要があ
るばかりでなく、次のバッチの加熱処理時には冷却によ
る加熱断熱部材の蓄熱損失を補う必要があり、余分なエ
ネルギーを必要としていた。
In the case of a conventional single-chamber vacuum quenching furnace, two means having mutually opposite functions, that is, a heating and sealing heat insulating means composed of a heater and a heat insulating material, a gas introduction pipe, a fan, and a gas cooler are provided in the same chamber. It was necessary to have a third means for accommodating the circulating cooling means and for switching both functions depending on the process. For this reason, the internal structure of the device becomes complicated, the size of the device becomes large, and the cost must be increased. In addition, when increasing the production volume with this device, the number of installed units will be increased, but considering that the heating time is longer than the gas cooling time for quenching, the circulation cooling means and the switching means are changed for the same reason as above. There was a problem of low utilization efficiency. Furthermore, during cooling, not only the member to be treated but also the heat insulating means are cooled at the same time, so in order to achieve the constant cooling rate required by the object to be treated, it is necessary to employ a cooling means with a large capacity. Not only that, but in the heat treatment of the next batch, it was necessary to compensate the heat storage loss of the heat insulating member due to cooling, and extra energy was required.
【0009】単室式焼結炉の場合、バーンオフ時に粉末
冶金部材から揮発してくるバインダーや成形潤滑材が高
温焼結用炉内部材や断熱材などの炉部材を汚染しないよ
う炉内雰囲気の流れや排気経路を配慮した特別な構成が
必要とされ、それが装置コスト高の一要因となってい
る。にもかかわらず、特に低温部での炉材の汚染が避け
られないため、操業の合間に一定期間毎または一定の使
用回数毎にに装置を高温で空焼きして汚染を揮発除去す
る必要があった。従って生産性が上がらず、余分なエネ
ルギーを必要とするという問題があった。
In the case of a single-chamber sintering furnace, a binder atmosphere and a forming lubricant volatilized from the powder metallurgy member at the time of burn-off do not contaminate the furnace members such as the high temperature sintering furnace member and the heat insulating material in the furnace atmosphere. A special configuration that takes into consideration the flow and exhaust path is required, which is one of the factors contributing to the high device cost. Nevertheless, since it is inevitable to contaminate the furnace material especially in the low temperature part, it is necessary to bake the equipment at high temperature for a certain period or a certain number of times between operations to volatilize and remove the contamination. there were. Therefore, there is a problem that productivity is not increased and extra energy is required.
【0010】以上に述ぺたような、バッチ炉や単室炉を
複数台稼働した場合に明らかとなる、利用効率の低い構
成部分や機能を含むという問題を解決するために、連続
処理設備が考えられた。即ち、連続処理装置は予め設定
した処理量によって一連の各処理室毎の容量と滞留時間
が設計される。従ってバッチ炉や単室炉のような、利用
効率の低い構成部分や機能は含まない。定常運転中はど
の部分も利用効率は100パーセントである。さらに、
各処理室または処理区域は各処理のために必要充分な作
用を発揮できる構成をとればよく、バッチ炉や単室炉の
ような、同時に作用することのない二つの異なる機能を
共存させる構成、をとる必要がないため、無駄のない設
計が可能である。
In order to solve the above-mentioned problem of including components and functions with low utilization efficiency, which becomes apparent when a plurality of batch furnaces or single-chamber furnaces are operated, a continuous processing facility is considered. Was given. That is, in the continuous processing apparatus, the capacity and residence time of each series of processing chambers are designed according to the preset processing amount. Therefore, it does not include components and functions with low utilization efficiency such as batch furnaces and single chamber furnaces. Utilization efficiency is 100% in all parts during steady operation. further,
Each treatment chamber or treatment area may have a configuration capable of exhibiting a necessary and sufficient action for each treatment, such as a batch furnace or a single-chamber furnace, in which two different functions that do not act at the same time coexist. Since there is no need to take the cost, it is possible to design without waste.
【0011】しかし、連続処理装置には以下のような問
題がある。処理量が当初の予定、即ち装置設計基準より
減少した場合、被処理品の最後の装入後は装置利用率が
時間的に直線関係で減少し、最後の被処理品の処理完了
時点でゼロとなる、従ってその後は装置の運転が一次停
止されることにとなる。次に再び装置の運転を再開する
には、利用効率の高い長時間連続運転を達成するため
に、被処理品の備蓄が必要となり、こうしてかなりの待
ち時間、即ち装置休止時間が発生することになる。従っ
てこうした生産状況においては連続処理装置の本来は高
くあるべきはずの装置利用効率が、バッチ炉や単室炉の
場合と比べても逆に著しく低くなってしまう。従って連
続処理装置は、量がまとまり難く且つ種類が多い被処理
物を扱うことの多い多品種少量生産には適さない。
However, the continuous processing apparatus has the following problems. If the throughput is reduced from the original plan, that is, the equipment design standard, the equipment utilization rate decreases linearly after the last charging of the processed products, and becomes zero when the processing of the final processed products is completed. Therefore, after that, the operation of the device is temporarily stopped. Next, in order to restart the operation of the device again, it is necessary to stockpile the product to be processed in order to achieve a high-efficiency continuous operation for a long time, which causes a considerable waiting time, that is, a device downtime. Become. Therefore, in such a production situation, the utilization efficiency of the continuous processing apparatus, which should have been high originally, becomes conspicuously low as compared with the case of the batch furnace or the single chamber furnace. Therefore, the continuous processing device is not suitable for small-lot production of a wide variety of products, which is difficult to collect and has many kinds of objects to be processed.
【0012】本発明は上記のような従来装置の欠点を解
消するためになされたものであり、その目的とするとこ
ろは、装置構成部分の利用効率が高く、且つ多品種少量
生産に適した熱処理炉を提供することにある。
The present invention has been made in order to solve the above-mentioned drawbacks of the conventional apparatus, and an object thereof is a heat treatment suitable for high-mix low-volume production with high utilization efficiency of the apparatus constituent parts. To provide a furnace.
【0013】[0013]
【課題を解決するための手段】本発明の熱処理炉は、複
数の処理室と、被処理物の装入・装出を行うための真空
パージ可能な前室と、垂直軸の回りに回転可能で処理室
または前室とのあいだで被処理物を搬送するための主搬
送手段を収容した主搬送室とを含み、前記複数の処理室
および前室を、前記主搬送室に対して前記垂直回転軸と
同軸の同一円筒面に周接するように配された接続口に対
し、それぞれ置換可能に並列的に連結配置したことを特
徴とする多室熱処理炉である。
The heat treatment furnace of the present invention includes a plurality of processing chambers, a vacuum purging front chamber for loading and unloading objects to be processed, and a rotatable vertical axis. And a main transfer chamber accommodating main transfer means for transferring an object to be processed between the processing chamber and the front chamber, the plurality of processing chambers and front chambers being perpendicular to the main transfer chamber. In the multi-chamber heat treatment furnace, connection ports arranged so as to circumscribe the same cylindrical surface coaxial with the rotation axis are connected in parallel so as to be replaceable.
【0014】また請求項2の発明は、前記主搬送室に冷
却部と、冷却部との間で被処理物を昇降させるための手
段とを付加したことを特徴とするものである。
Further, the invention of claim 2 is characterized in that a cooling section and means for raising and lowering an object to be processed between the cooling section are added to the main transfer chamber.
【0015】また請求項3の発明は、前記主搬送室に冷
却部と、冷却部との間で被処理物を昇降させるための手
段と、前記処理室に主搬送室への被処理物の押し出し機
構を設けたことを特徴とするものである。
According to a third aspect of the present invention, a cooling section is provided in the main transfer chamber, a means for moving the processing object up and down between the cooling section, and the processing chamber is provided with an object to be processed. It is characterized in that a push-out mechanism is provided.
【作用】本発明の多室式熱処理炉は複数の処理室および
前室が一つの主搬送室を共有しているので、運転時にお
ける主搬送室の利用効率が高く、また占有床面積が節約
できる。同様に、複数の処理室が主搬送室を介して前室
を共有しているので、前室の利用効率が高く、また占有
床面積が節約できる。また、複数の処理室および前室が
主搬送室に並列的に連結配置されているので、場合に応
じて、複数の異なる処理が同時並行的に実施できるとと
もに、複数の処理室を時系列的に使って連続的処理を行
うこともできる。さらにまた、複数の処理室および前室
が主搬送室に対して主搬送手段の垂直回転軸と同軸の同
一円筒面に周接するように配した接続口に対してそれぞ
れ置換可能に連結配置されているので、処理室および前
室の数、種類、相対位置を目的に応じて自由に選択可能
である。被処理物は真空パージ可能な前室を経て装置へ
の装入、装置からの装出が行われるので、フレームカー
テンが不要である。一連の処理間の搬送を装置内の狭い
空間内で行なうことができるので、炉外走行車や軌道の
設置場所が節約できる。また、主搬送室や前室に関する
付属構成部分だけでなく、制御部分も複数の処理室に対
して統合されて共用するので、それらの利用効率も高め
ることができる。
In the multi-chamber heat treatment furnace of the present invention, the plurality of processing chambers and the antechamber share the same main transfer chamber, so that the main transfer chamber is highly utilized during operation and the occupied floor area is saved. it can. Similarly, since the plurality of processing chambers share the front chamber via the main transfer chamber, the utilization efficiency of the front chamber is high and the occupied floor area can be saved. In addition, since multiple processing chambers and anterior chambers are connected in parallel to the main transfer chamber, multiple different processes can be performed concurrently in parallel, and multiple processing chambers can be arranged in a time series. Can also be used for continuous processing. Furthermore, a plurality of processing chambers and anterior chambers are respectively replaceably connected to connection ports arranged so as to make circumferential contact with the main transfer chamber on the same cylindrical surface coaxial with the vertical rotation axis of the main transfer means. Therefore, the number, types, and relative positions of the processing chambers and the antechambers can be freely selected according to the purpose. Since the object to be treated is loaded into and unloaded from the apparatus through the vacuum-purchatable front chamber, the frame curtain is not required. Since the transportation between the series of treatments can be performed in a narrow space inside the apparatus, it is possible to save the installation place of the vehicle outside the furnace or the track. Further, not only the auxiliary components relating to the main transfer chamber and the antechamber but also the control unit are integrated and shared by a plurality of processing chambers, so that their utilization efficiency can be improved.
【0016】請求項2の発明によれば、主搬送室に冷却
部と、冷却部との間で被処理物を昇降させる手段とを付
加することができるので、3次元配置が可能となり占有
床面積が節約できる。また処理室と冷却室との間の被処
理物の移送が迅速にできる。
According to the second aspect of the present invention, the main transfer chamber can be provided with a cooling unit and means for moving up and down the object to be processed between the cooling unit, so that a three-dimensional arrangement is possible and the occupied floor is occupied. Area can be saved. In addition, it is possible to quickly transfer the object to be processed between the processing chamber and the cooling chamber.
【0017】請求項3の発明によれば、被処理物は処理
室に設けられた押し出し機構により直接主搬送室の昇降
手段上へ押し出されるので、被処理物の迅速な移送が可
能である。
According to the third aspect of the present invention, the object to be processed is pushed directly onto the elevating means of the main transfer chamber by the pushing mechanism provided in the processing chamber, so that the object to be processed can be quickly transferred.
【0018】[0018]
【実施例】次に本発明の実施例を図面を参照しながら説
明する。
Embodiments of the present invention will now be described with reference to the drawings.
【0019】[0019]
【実施例1】図1は本発明の多室熱処理炉を、真空焼結
用として構成した場合の平面配置を示したものである。
被処理物は真空パージ室(1)より出し入れされる。そ
して真空パージ、および窒素ガスによる復圧後、主搬送
室(2)内へ搬送される。主搬送室(2)の主搬送手段
(3)は水平面内で回転自在、かつ周囲の任意の各室と
の対向位置で停止可能で、被処理物を任意の一室から搬
出し、任意の他の一室に搬入できるフォーク式のものが
好適である。また各室と主搬送室の間は図示しない扉で
隔離されており、被処理物の搬送に必要なときのみ扉が
開くようになっている。さて主搬送室(2)内に搬送さ
れた被処理物は、以後バーンオフ室(4)、第一の真空
焼結室(5)、冷却室(7)の順に、主搬送室(2)を
経由して巡って、脱ワックス、真空焼結、冷却から成る
第一の所定の工程を終えた後、再び主搬送室(2)に戻
ってくると、最後に真空パージ室(1)を経由して炉外
に搬出される。通常、冷却は自然冷却とガス冷却の組み
合わせで行われるが、勿論これに限定されない。
[Embodiment 1] FIG. 1 shows a plane arrangement of a multi-chamber heat treatment furnace of the present invention, which is configured for vacuum sintering.
The object to be processed is taken in and out from the vacuum purge chamber (1). Then, after vacuum purging and restoring the pressure with nitrogen gas, they are transferred into the main transfer chamber (2). The main transfer means (3) of the main transfer chamber (2) is rotatable in a horizontal plane and can be stopped at a position facing any of the surrounding chambers. A fork type that can be carried into another chamber is preferable. Further, each chamber and the main transfer chamber are separated by a door (not shown) so that the door is opened only when it is necessary to transfer the object to be processed. The object transferred into the main transfer chamber (2) is transferred to the main transfer chamber (2) in the order of the burn-off chamber (4), the first vacuum sintering chamber (5) and the cooling chamber (7). After completing the first predetermined process consisting of dewaxing, vacuum sintering, and cooling, when returning to the main transfer chamber (2) again, finally it passes through the vacuum purge chamber (1). Then, it is carried out of the furnace. Usually, cooling is performed by a combination of natural cooling and gas cooling, but it is not limited to this.
【0020】同様に第二の被処理物が搬入され、バーン
オフ室(4)、第二の真空焼結室(6)、冷却室(7)
の順に、主搬送室(2)を経由して巡って、第二の所定
の工程を終えた後、主搬送室(2)、真空パージ室
(1)を経て炉外に搬出される。以下同様に、第三、第
四、・・・の被処理物の処理を行う。この例では比較的
工程時間の長い焼結のために二つの真空焼結室(5)
(6)に対して、それぞれ真空パージ室(1)、バーン
オフ室(4)、冷却室(7)一つづつという構成を取っ
て、工程能力のバランスを図っているが、他にも工程に
応じ組み合わせを自由に設定できる。なお、主搬送室
(2)と主搬送手段(3)は前記の5室で共用すること
により、一層の利用効率の向上を図っている。また、場
合により、室数を減らした構成とすることも可能であ
る。ここで第一、第二の被処理物は必ずしも同一の処理
を受けるとは限らないことは上記の通りである。さら
に、例えば第一の真空焼結室(5)は、時間的にパラメ
ータを変えて運転されることもある。他の各室について
も同様である。連続炉の場合と異なり、各処理室が並列
配置のため、一連の処理を連続的に行う場合でも、処理
条件変更の自由度は高い。
Similarly, the second object to be treated is carried in, the burn-off chamber (4), the second vacuum sintering chamber (6), and the cooling chamber (7).
In that order, after passing through the main transfer chamber (2) and completing the second predetermined process, the second transfer process is carried out through the main transfer chamber (2) and the vacuum purge chamber (1) to the outside of the furnace. Similarly, the third, fourth, ... Processing objects are processed. In this example, two vacuum sintering chambers (5) for relatively long process time sintering
A vacuum purge chamber (1), a burn-off chamber (4), and a cooling chamber (7) are provided for each of (6) to balance the process capability. The combination can be set freely. The main transfer chamber (2) and the main transfer means (3) are shared by the above-mentioned five chambers to further improve the utilization efficiency. Further, depending on the case, the number of rooms can be reduced. As described above, the first and second objects to be processed do not always receive the same processing. Furthermore, for example, the first vacuum sintering chamber (5) may be operated with temporally changing parameters. The same applies to the other rooms. Unlike in the case of a continuous furnace, since the processing chambers are arranged in parallel, the degree of freedom in changing the processing conditions is high even when performing a series of processing continuously.
【0021】[0021]
【実施例2】図2は本発明の多室熱処理炉の主搬送室
(2)に、主搬送手段(3)、主搬送室(2)の上部に
急冷室(8)、および第一の昇降手段(9)を配した構
成を示す立面図である。第一の被処理物は第一の真空焼
結室(5)で焼結された後、主搬送室において予め待機
中の第一の昇降手段(9)上に搬送され、直ちに急冷室
(8)へ持ち上げられ、冷却が開始される。第一の被処
理物の冷却中に、真空焼結室(5)はバーンオフ室
(4)で工程を終えた第二の被処理物を、主搬送室
(2)を介して主搬送手段(3)から受け取り、新たな
焼結工程を開始する。第二の真空焼結室(6)について
も同様である。冷却室(7)は、他の処理室に置き代え
ることもできるし、またそのままにして、二つの独立な
冷却室として併用することもできる。配置上、急冷室
(8)は特にやガス冷却に適している。勿諭、急冷室
(8)を通常の冷却室でおき代えてもよい。
Embodiment 2 FIG. 2 shows the main transfer chamber (2) of the multi-chamber heat treatment furnace of the present invention, the main transfer means (3), the quenching chamber (8) above the main transfer chamber (2), and the first transfer chamber. It is an elevation view which shows the structure which arranged the raising / lowering means (9). After the first object to be processed is sintered in the first vacuum sintering chamber (5), it is transferred to the first elevating means (9) waiting in advance in the main transfer chamber and immediately cooled in the quenching chamber (8). ) And cooling is started. During the cooling of the first object to be processed, the vacuum sintering chamber (5) transfers the second object to be processed in the burn-off chamber (4) through the main transfer chamber (2) to the main transfer means (2). Receive from 3) and start a new sintering process. The same applies to the second vacuum sintering chamber (6). The cooling chamber (7) can be replaced with another processing chamber, or can be left as it is and used as two independent cooling chambers. Due to the arrangement, the quench chamber (8) is particularly suitable for gas cooling. Of course, the quenching chamber (8) may be replaced with a normal cooling chamber.
【0022】[0022]
【実施例3】図3は本発明の多室熱処理炉を、浸炭焼入
れ用として構成した場合の平面配置を示したもので、真
空パージ室(1)、主搬送室(2)、主搬送手段
(3)、第一の浸炭焼入れ室 (10)、第二の浸炭焼
入れ室(11)、洗浄室(14)、および焼戻し室(1
5)が示されている。また図4は、同構成例において、
主搬送室(2)に、主搬送手段(3)、主搬送室の下部
に焼入れ油槽(12)、および第二の昇降手段(13)
を配した構成を示した立面図である。被処理物は、真空
パージ室(1)を経て主搬送室に搬送された後、第一の
浸炭焼入れ室(10)または第二の浸炭焼入れ室(1
1)、焼入れ油槽(12)、主搬送室(2)、洗浄室
(14)、焼戻し室(15)の順に巡って、浸炭・拡散
・均熱、油焼入れ、油切り、脱脂洗浄、焼戻しから成る
一連の工程を終え、最後に再び真空パージ室(1)を経
て外界へ搬出される。
[Embodiment 3] FIG. 3 shows a planar arrangement of a multi-chamber heat treatment furnace of the present invention for carburizing and quenching. It includes a vacuum purge chamber (1), a main transfer chamber (2), and a main transfer means. (3), first carburizing and quenching chamber (10), second carburizing and quenching chamber (11), cleaning chamber (14), and tempering chamber (1
5) is shown. In addition, FIG. 4 shows the same configuration example.
Main transfer means (3) in the main transfer chamber (2), quenching oil tank (12) below the main transfer chamber, and second elevating means (13).
It is an elevational view showing a configuration in which is arranged. The object to be processed is transferred to the main transfer chamber through the vacuum purge chamber (1), and then the first carburizing and quenching chamber (10) or the second carburizing and quenching chamber (1).
1), quenching oil tank (12), main transfer chamber (2), cleaning chamber (14), tempering chamber (15) in order, from carburizing / diffusion / soaking, oil quenching, oil removal, degreasing cleaning, and tempering. After the series of steps, the process is finally carried out through the vacuum purge chamber (1) to the outside.
【0023】ここで、焼入れ時の動作の説明に戻るが、
第一の浸炭焼入れ室(10)中で浸炭・拡散処理され、
次に焼入れ温度に所定時間保持された第一の被処理物
は、主搬送室において予め待機中の第二の昇降手段(1
3)上に搬送され、直ちに焼入れ油槽(12)中へと下
降せしめられ、油焼入れされる。このときは、被処理物
を素早く主搬送室(2)へ搬送するために、浸炭焼入れ
室(10)に設けられた図示しない押出し機構が用いら
れる。油中焼入れは迅速に行う必要があるが、もしこれ
を主搬送手段(3)によって行ったとすれば、被処理物
を浸炭焼入れ室(10)へ受け取りに行く動作が必要と
なり、押出し機構に比べて、その分だけ時間が余計にか
かるためである。第一の被処理物の油焼入れ中に、第一
の浸炭焼入れ室(10)は真空パージ室(1)で待機し
ていた第二の被処理物を、主搬送室(2)を介して主搬
送手段(3)から受け取り、新たな浸炭焼入れ工程を開
始する。第二の浸炭焼入れ室(11)についても上記と
同様である。本構成は特に油中焼入れや水中焼入れを迅
速に行うために適している。場合によっては水や油によ
る噴射焼入れが行われることがあるが、その場合は主搬
送室(2)下部の焼入れ油槽の代わりに液体噴射急冷室
(図示しない)とすればよい。
Now, returning to the description of the operation during quenching,
Carburized and diffused in the first carburizing and quenching chamber (10),
Next, the first object to be treated, which has been kept at the quenching temperature for a predetermined time, is the second elevating means (1) waiting in advance in the main transfer chamber.
3) It is conveyed to the upper side and immediately lowered into the quenching oil tank (12) for oil quenching. At this time, an extruding mechanism (not shown) provided in the carburizing and quenching chamber (10) is used to quickly convey the object to be processed to the main transport chamber (2). Quenching in oil needs to be carried out quickly, but if this is done by the main transport means (3), it is necessary to move the object to be carburized and quenched into the carburizing and quenching chamber (10), which is more difficult than the extrusion mechanism. This is because it takes extra time. During the oil quenching of the first object to be processed, the first carburizing and quenching chamber (10) waits for the second object to be processed in the vacuum purge chamber (1) via the main transfer chamber (2). Received from the main transport means (3), a new carburizing and quenching process is started. The same applies to the second carburizing and quenching chamber (11). This configuration is particularly suitable for rapid quenching in oil and quenching in water. In some cases, injection quenching with water or oil may be performed. In that case, a liquid injection quenching chamber (not shown) may be used instead of the quenching oil tank below the main transfer chamber (2).
【0024】尚、上記の理由により、本例の場合には、
主搬送手段(3)は必ずしもフォーク式のものである必
要はなく、押し出し機構とし、浸炭焼入れ室(10)
(11)のみならず洗浄室(14)、焼戻し室(15)
および真空パージ室(1)もそれぞれ押出し機構を備え
た構成としてもよいことは勿論である。以上は浸炭焼入
れ炉の場合であるが、真空ガス冷却焼入れ炉の場合も同
様である。即ち、図示しないが、真空加熱室で焼入れ温
度に均熱された被処理物は、真空加熱室に備えられた押
し出し機構で主搬送室の第一の昇降手段上へと素早く移
送され、次に急冷室へと押し上げられて即座にガス冷却
されて焼入れられる。焼入れ用のガス急冷室は主搬送室
の上部とは限らず、下部、または上下共に別個のものを
設けてもよい。
For the above reason, in the case of this example,
The main transfer means (3) does not necessarily have to be of the fork type, but rather has a push-out mechanism, and the carburizing and quenching chamber (10)
Not only (11) but also cleaning room (14) and tempering room (15)
It goes without saying that the vacuum purge chamber (1) and the vacuum purge chamber (1) may each be provided with an extrusion mechanism. The above is the case of the carburizing and quenching furnace, but the same applies to the case of the vacuum gas cooling quenching furnace. That is, although not shown, the object to be treated that has been uniformly heated to the quenching temperature in the vacuum heating chamber is quickly transferred to the first elevating means of the main transfer chamber by the extrusion mechanism provided in the vacuum heating chamber, It is pushed up to the quenching room and immediately gas cooled and quenched. The quenching gas quenching chamber is not limited to the upper part of the main transfer chamber, but lower parts or upper and lower parts may be provided separately.
【0025】次に炉内有効寸法が24インチ巾×36イ
ンチ奥行き×24インチ高さの浸炭炉を基準として、本
実施例の構成の炉の占有床面積を、これと等価な従来の
バッチ炉ラインのものと比較する。従来のバッチ炉ライ
ンの場合占有床面積は84平方メートルであったのに対
し、本実施例の構成では41平方メートルとなる。即ち
本構成の場合、同一床面積に従来のバッチ炉2ライン分
の能力の設備を設置できることになる。
Next, based on a carburizing furnace having an effective size in the furnace of 24 inches width × 36 inches depth × 24 inches height, the floor space occupied by the furnace of the present embodiment is equivalent to that of a conventional batch furnace. Compare with the one in line. In the case of the conventional batch furnace line, the occupied floor area is 84 square meters, whereas in the configuration of this embodiment, it is 41 square meters. That is, in the case of this configuration, it is possible to install equipment having a capacity of two lines of the conventional batch furnace in the same floor area.
【0026】[0026]
【実施例4】図5は本発明の多室熱処理炉の増設例の一
つとして、A、Bの2基を連結した場合の平面配置を示
したものである。即ちAとBは連結室(16)により互
いに連結され、A、Bそれぞれが真空パージ室(1)を
一つずつ備えた構成となっている。この構成では、例え
ばAの真空パージ室(1)を被処理物の入口、Bのそれ
を出口として利用し、各処理室の配置を、被処理物がA
からBに移動するうちに一連の処理が終了する、いわゆ
る順序的な利用を狙ったものとすることができる。また
単に各処理室の配置をA、B同等にし、単に並列的な利
用を狙ったものとすることもできる。ここで注意してお
きたい点は、シーケンシャル性の強い配置の場合でも、
個々のA、B内ではパラレルとなっているため、従来の
連続炉と比べて遙かに自由度の高い操業が可能なこと、
また反対に、パラレル性の強い配置の場合でも、A、B
を連結しないでそれぞれ単独に運転する場合に比べて、
従って従来の複数のバッチ炉と比べると遙かに、処理の
自由度が増大することである。その結果、より多くの組
み合わせで処理が可能となり、装置全体の利用効率を更
に上げることができる。また、図示しないが、連結数を
増やせば、直鎖状、円環状、網目状、あるいは任意の形
状にレイアウト可能である。
[Embodiment 4] FIG. 5 shows a plane arrangement when two units A and B are connected, as one example of an extension of the multi-chamber heat treatment furnace of the present invention. That is, A and B are connected to each other by a connecting chamber (16), and each of A and B has a vacuum purge chamber (1). In this configuration, for example, the vacuum purge chamber (1) of A is used as the inlet of the object to be processed and that of B is used as the outlet, and the arrangement of each processing chamber
It is possible to aim for so-called sequential use, in which a series of processing is completed while moving from B to B. It is also possible to simply make the arrangement of the processing chambers equal to A and B and simply aim for parallel use. The point to be noted here is that even in the case of a strong sequential arrangement,
Since it is parallel in each A and B, it is possible to operate with a much higher degree of freedom than the conventional continuous furnace.
On the contrary, even in the case where the parallelism is strong, A, B
Compared to the case of operating independently without connecting
Therefore, as compared with the conventional multiple batch furnaces, the degree of freedom in processing is greatly increased. As a result, processing can be performed with more combinations, and the utilization efficiency of the entire device can be further increased. Although not shown, if the number of connections is increased, the layout can be linear, annular, mesh-like, or any shape.
【0027】ここで連結室(16)は場合によっては断
熱される。例えば高温に加熱された被処理物をAB間で
搬送する場合には断熱が必要である。また、出入口の個
数や位置は自由に選定できる。例えば、図5のA、Bそ
れぞれ一つの真空パージ室(1)の代わりにそれぞれ適
当な処理室を設置し、連結室(16)の代わりに、一つ
の長い側面と他の二側面を含む三側面においてそれぞれ
開口可能な扉を持つ別種の真空パージ室(図示しない)
を配置すれば、一つの長い側面の扉を通して外界と被処
理物のやりとりができる構成とすることができる。
Here, the connection chamber (16) is optionally thermally insulated. For example, heat insulation is necessary when the object to be processed heated to a high temperature is transported between AB. Also, the number and position of the entrances and exits can be freely selected. For example, instead of one vacuum purging chamber (1) in each of FIGS. 5A and 5B, a suitable processing chamber is installed, and instead of the connecting chamber (16), one long side face and two other side faces are provided. Another type of vacuum purge chamber with doors that can be opened on each side (not shown)
By arranging, the object to be processed can be exchanged with the outside world through one long side door.
【0028】[0028]
【発明の効果】本発明によれば、設備コストが従来より
安価で、且つ利用効率が高く、占有床面積が小さく、安
全でクリーンな熱処理炉が実現できるとともに、被処理
物の負荷変動に対して柔軟に対応できる、多品種少量生
産に特に好適な熱処理炉が提供できる。また処理室の組
み合わせや連結が自在で、目的に応じた最適の設備構成
ができる。
EFFECTS OF THE INVENTION According to the present invention, it is possible to realize a safe and clean heat treatment furnace which has a lower equipment cost, higher utilization efficiency, a smaller occupied floor area, and a load fluctuation of the object to be treated. It is possible to provide a heat treatment furnace which can be flexibly dealt with, and which is particularly suitable for high-mix low-volume production. In addition, the processing chambers can be combined and connected freely, and the optimum equipment configuration according to the purpose can be achieved.
【0029】請求項2の発明によれば、占有床面積が更
に節約出来るのみならず、迅速な焼き入れが可能とな
る。
According to the second aspect of the present invention, not only the occupied floor area can be further saved but also rapid quenching is possible.
【0030】請求項3の発明によれば、迅速な搬送が可
能となり、焼き入れを一層確実なものにする。
According to the third aspect of the present invention, rapid transportation is possible, and quenching is further ensured.
【0031】[0031]
【図面の簡単な説明】[Brief description of drawings]
【図1】は本発明の第一の実施例を示す平面配置図であ
る。
FIG. 1 is a plan layout view showing a first embodiment of the present invention.
【図2】は本発明の第二の実施例を示す立面図である。FIG. 2 is an elevational view showing a second embodiment of the present invention.
【図3】は本発明の第三の実施例を示す平面配置図であ
る。
FIG. 3 is a plan layout view showing a third embodiment of the present invention.
【図4】は本発明の第三の実施例の要部立面図である。FIG. 4 is an elevational view of an essential part of a third embodiment of the present invention.
【図5】は本発明の第四の実施例を示す平面配置図であ
る。
FIG. 5 is a plan layout view showing a fourth embodiment of the present invention.
【符号の説明】[Explanation of symbols]
1 真空パージ室 2 主搬送室 3 主搬送手段 4 バーンオフ室 5 第一の真空焼結室 6 第二の真空焼結室 7 冷却室 8 急冷室 9 第一の昇降手段 10 第一の浸炭焼入れ室 11 第二の浸炭焼入れ室 12 焼入れ油槽 13 第二の昇降手段 14 洗浄室 15 焼戻し室 16 連結室 DESCRIPTION OF SYMBOLS 1 Vacuum purge chamber 2 Main transfer chamber 3 Main transfer means 4 Burn-off chamber 5 First vacuum sintering chamber 6 Second vacuum sintering chamber 7 Cooling chamber 8 Quenching chamber 9 First elevating means 10 First carburizing and quenching chamber 11 Second Carburizing and Quenching Room 12 Quenching Oil Tank 13 Second Elevating Means 14 Cleaning Room 15 Tempering Room 16 Connection Room
───────────────────────────────────────────────────── フロントページの続き (72)発明者 前田 修一 奈良県天理市嘉幡町229番地 光洋リンド バーグ株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shuichi Maeda Koyo Lindberg Co., Ltd. 229 Kahata-cho, Tenri-shi, Nara

Claims (3)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 複数の処理室と、被処理物の装入・装出
    を行うための真空パージ可能な前室と、垂直軸の回りに
    回転可能で処理室または前室とのあいだで被処理物を搬
    送するための主搬送手段を収容した主搬送室とを含み、
    前記複数の処理室および前室を、前記主搬送室に対して
    前記垂直回転軸と同軸の同一円筒面に周接するように配
    された接続口に対し、それぞれ置換可能に並列的に連結
    配置したことを特徴とする多室熱処理炉。
    1. A plurality of processing chambers, an antechamber capable of vacuum purging for loading and unloading an object to be treated, and a processing chamber or anterior chamber rotatable about a vertical axis. Including a main transfer chamber containing a main transfer means for transferring the processed material,
    The plurality of processing chambers and the antechamber are connected to the main transfer chamber so as to be replaceable in parallel with each other with respect to a connection port arranged so as to circumscribe on the same cylindrical surface coaxial with the vertical rotation axis. A multi-chamber heat treatment furnace characterized in that
  2. 【請求項2】 主搬送室に、冷却部と、冷却部との間で
    被処理物を昇降させるための手段とを付加したことを特
    徴とする請求項1記載の多室熱処理炉。
    2. The multi-chamber heat treatment furnace according to claim 1, further comprising a cooling section and means for raising and lowering an object to be processed between the cooling section and the main transfer chamber.
  3. 【請求項3】 処理室に主搬送室への被処理物の押し出
    し機構を設けたことを特徴とする請求項2記載の多室熱
    処理炉。
    3. The multi-chamber heat treatment furnace according to claim 2, wherein the processing chamber is provided with a mechanism for pushing out an object to be processed to the main transfer chamber.
JP34078494A 1994-12-20 1994-12-20 Multi-chamber heat treatment furnace Expired - Fee Related JP3490791B2 (en)

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KR100602225B1 (en) * 1997-12-02 2006-10-24 에뛰드 에꽁스트뤽시옹 메까니끄 A chained thermal processing installation under rarefied atmosphere
US6814573B2 (en) 2001-12-14 2004-11-09 Jh Corporation Vacuum heat-treatment apparatus
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EP1323995A3 (en) * 2001-12-26 2003-11-05 Nitrex Metal Inc Multi-cell thermal processing unit
EP1323995A2 (en) * 2001-12-26 2003-07-02 Nitrex Metal Inc Multi-cell thermal processing unit
US6902635B2 (en) 2001-12-26 2005-06-07 Nitrex Metal Inc. Multi-cell thermal processing unit
FR2874079A1 (en) * 2004-08-06 2006-02-10 Francis Pelissier THERMOCHEMICAL CEMENT TREATMENT MACHINE
JP2006220328A (en) * 2005-02-09 2006-08-24 Fuji Electric Systems Co Ltd Induction heating type dry distillation furnace
JP4641816B2 (en) * 2005-02-09 2011-03-02 メタウォーター株式会社 Induction heating type distillation furnace
CN103038593A (en) * 2010-07-02 2013-04-10 株式会社Ihi Multi-chamber heat treatment device
WO2012002532A1 (en) * 2010-07-02 2012-01-05 株式会社Ihi Multi-chamber heat treatment device
US20130153547A1 (en) * 2010-07-02 2013-06-20 Kazuhiko Katsumata Multi-chamber heat treatment device
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US9719149B2 (en) 2011-12-23 2017-08-01 Ipsen, Inc. Load transport mechanism for a multi-station heat treating system
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