JPS61243115A - Vacuum heat treatment device - Google Patents
Vacuum heat treatment deviceInfo
- Publication number
- JPS61243115A JPS61243115A JP8389385A JP8389385A JPS61243115A JP S61243115 A JPS61243115 A JP S61243115A JP 8389385 A JP8389385 A JP 8389385A JP 8389385 A JP8389385 A JP 8389385A JP S61243115 A JPS61243115 A JP S61243115A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- chamber
- vacuum
- heating chamber
- treated
- 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
Links
Landscapes
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Furnace Details (AREA)
Abstract
Description
【発明の詳細な説明】 〈産業上の利用分野〉 本発明は真空熱処理装置に関する。[Detailed description of the invention] <Industrial application field> The present invention relates to a vacuum heat treatment apparatus.
金属製品を熱処理する場合に真空熱処理装置が使用され
る。この装置は例えば、鉄鋼製品を焼入れする場合、真
空タンク内でその被熱物を真空条件下に加熱した後、該
真空タンク内に導入した窒素ガス等の雰囲気ガスを強制
循環させてこれを加熱後の被熱物へ繰シ返し接触させる
ことによシ冷却する装置である。Vacuum heat treatment equipment is used when heat treating metal products. For example, when quenching a steel product, this equipment heats the object under vacuum conditions in a vacuum tank, and then heats it by forcedly circulating atmospheric gas such as nitrogen gas introduced into the vacuum tank. This is a device that cools the next heated object by repeatedly bringing it into contact with the object.
本発明はかかる真空熱処理装置に関し、更に詳しくは上
記の如く加熱後の被熱物を均−且つ迅速に冷却すること
ができる真空熱処理装置に関するものである。The present invention relates to such a vacuum heat treatment apparatus, and more particularly to a vacuum heat treatment apparatus capable of uniformly and quickly cooling a heated object as described above.
〈従来の技術、その問題点〉
従来、真空熱処理装置として、開閉可能な真空タンク内
に断熱材で囲繞された加熱室及びガスクーラ並びにガス
ファンが装備された次のような各種の装置が提案されて
いる。例えば、加熱室の前方にガス送入口を、また加熱
室の後方にガス排出口をそれぞれ開設し、ガス送入口と
ガス排出口には駆動装置によシ開閉可能な扉が付設され
ていて、該扉を閉じた状態で加熱室内の被熱物な真空条
件下に加熱し、加熱後の被熱物を冷却する段階で該扉を
開き、真空タンク内へ導入したガスを加熱室に順次後続
するガスクーラで冷却しつつガスファンで強制循臘させ
て該ガスを送入口から排出口へと繰シ返し加熱室内に通
風させ、この際に該ガスを加熱室内の加熱後の被熱物へ
接触させて該被熱物を冷却する装置がある。また例えば
、前記のような扉を付設することなく、送入口の前方及
び排出口の後方に熱拡散を防止しつつガスだけは通過さ
せるような間隙を設定して遮熱板を固定した装置や、前
記のような駆動装置による扉に代えである種の遊動扉を
付設し、加熱時はこの遊動扉が自重でガス送入口及びガ
ス排出口を閉じた状態にするが、冷却時にはとの遊動扉
がガスの送風力で持ち上がることによシガス送入口及び
ガス排出口を開いた状態にする装置（特公昭５８−３９
８８８）等がある。<Prior art and its problems> Conventionally, the following various types of equipment have been proposed as vacuum heat treatment equipment, which are equipped with a heating chamber surrounded by a heat insulating material, a gas cooler, and a gas fan in an openable and closable vacuum tank. ing. For example, a gas inlet is provided at the front of the heating chamber, and a gas outlet is provided at the rear of the heating chamber, and doors that can be opened and closed by a drive device are attached to the gas inlet and the gas outlet. The object to be heated in the heating chamber is heated under vacuum conditions with the door closed, and when the object to be heated after heating is cooled, the door is opened and the gas introduced into the vacuum tank is sequentially introduced into the heating chamber. While cooling with a gas cooler, the gas is forced to circulate with a gas fan and the gas is repeatedly ventilated into the heating chamber from the inlet to the outlet, and at this time, the gas comes into contact with the heated object in the heating chamber. There is a device that cools the heated object. Another example is a device in which a heat shield is fixed by setting a gap in front of the inlet and behind the outlet to prevent heat diffusion while only allowing gas to pass through, without adding a door as described above. Instead of the door driven by the drive device as described above, a type of floating door is attached, and during heating, this floating door closes the gas inlet and gas outlet by its own weight, but when cooling, the floating door closes the gas inlet and gas outlet by its own weight. A device that opens the gas inlet and gas outlet by lifting the door with the gas blowing force (Special Publication No. 58-39
888) etc.
ところが、これらの従来装置には、加熱後の被熱物をガ
ス冷却する場合に、冷却用のガスが加熱室内に静置され
ている該被熱物へ所定方向からのみ接触するため、該被
熱物の冷却が不均一で且つ遅速であるという問題点があ
る。そしてこのような問題点は結局、例えば鉄鋼製品の
焼入れに上記従来装置を使用する場合、単に処理効率を
悪くするだけでなく、得られる最終製品の品質に重大な
悪影響を及ぼすことになる。However, in these conventional devices, when a heated object is gas-cooled, the cooling gas comes into contact with the object placed still in the heating chamber only from a predetermined direction. There is a problem that the cooling of hot objects is uneven and slow. When the conventional apparatus is used to harden steel products, for example, these problems not only impair processing efficiency but also seriously affect the quality of the final product.
〈発明が解決しようとする問題点、その解決手段〉
本発明は叙上の如き従来装置の問題点を解決する改良さ
れた真空熱処理装置を提供するものであるｏしかして本
発明は、開閉可能な真空タンク内に断熱材で囲繞された
加熱室及びガスクーラ並びにガスファンが装備されてお
り、前記加熱室内には載置台が位置決めされていて、該
載置台が駆動装置によって回転し得るように構成されて
成ることを特徴とする真空熱処理装置に係る。<Problems to be Solved by the Invention and Means for Solving the Problems> The present invention provides an improved vacuum heat treatment apparatus that solves the problems of the conventional apparatus as described above. A heating chamber surrounded by a heat insulating material, a gas cooler, and a gas fan are equipped in a vacuum tank, and a mounting table is positioned within the heating chamber, and the mounting table is configured to be rotated by a drive device. The present invention relates to a vacuum heat treatment apparatus characterized in that:
以下、図面に基づいて本発明の構成を更に詳細に説明す
る。Hereinafter, the configuration of the present invention will be explained in more detail based on the drawings.
〈実施例〉
第１図は本発明の一実施例を示す断面図（一部省略）で
ある。真空タンク１の前部扉２が開閉可能になっておシ
、この真空タンク１の後方側壁には、パルプ付きのガス
導入口３及び図示しない真空ポンプへと連結されている
バルブ付きの排気口４がそれぞれ開設されている。また
該真空タンク１内には、炭素繊維等の通気性のある断熱
材５で囲繞された加熱室６、及びこの加熱室６に後続す
るガスクーラ７、更にこのガスクーラ７に後続するガス
ファン８がそれぞれ装備されており、加熱室６に発熱体
９が固定されていて、ガスファン８は駆動装置１０へ連
結されている。更に、加熱室６の前方にガス送入口１１
が、また加熱室６の後方にガス排出口１２がそれぞれ開
設され、ガス送入口１１及びガス排出口１２には各々、
駆動装置１３．１４に連結されてガス送入口１１及びガ
ス排出口１２を適宜開閉する扉１５．１６が付設されて
いる。<Embodiment> FIG. 1 is a sectional view (partially omitted) showing an embodiment of the present invention. The front door 2 of the vacuum tank 1 can be opened and closed, and the rear side wall of the vacuum tank 1 has a gas inlet 3 with pulp and an exhaust port with a valve connected to a vacuum pump (not shown). 4 have been established. Inside the vacuum tank 1, there is a heating chamber 6 surrounded by a breathable heat insulating material 5 such as carbon fiber, a gas cooler 7 following the heating chamber 6, and a gas fan 8 following the gas cooler 7. A heating element 9 is fixed to a heating chamber 6, and a gas fan 8 is connected to a drive device 10. Furthermore, a gas inlet 11 is provided in front of the heating chamber 6.
However, a gas outlet 12 is also provided at the rear of the heating chamber 6, and the gas inlet 11 and the gas outlet 12 each have a
A door 15.16 is provided which is connected to the drive device 13.14 and opens and closes the gas inlet 11 and the gas outlet 12 as appropriate.
そして、加熱室６内には載置台１７が位置決めされてい
て、該載置台１７は、駆動装置１８へと連結されており
、この駆動装置１８によって回転し得るように構成され
ている。通常、載置台１７は少なくもその加熱室６内に
露出する構成部分が耐熱材で形成され、該載置台１７は
交換容易なように嵌め込み方式がとられておシ、また駆
動装置１８は駆動モータと減速機とから構成される装置
台１７の回転数を適宜制御し得るよう釦なっている。A mounting table 17 is positioned within the heating chamber 6, and the mounting table 17 is connected to a drive device 18 and is configured to be rotated by the drive device 18. Usually, at least the component parts of the mounting table 17 that are exposed in the heating chamber 6 are made of a heat-resistant material, and the mounting table 17 is fitted in a way that it can be easily replaced. A button is provided to appropriately control the rotation speed of the device stand 17, which is composed of a motor and a speed reducer.
勿論、いうまでもなく、真空タンク１の壁面を貫通する
構成部材と該壁面との間は真空シールされている。Of course, it goes without saying that a vacuum seal is established between the constituent members penetrating the wall of the vacuum tank 1 and the wall.
く作用〉
次に、第１図の実施例によって本発明の詳細な説明する
。Function> Next, the present invention will be explained in detail with reference to the embodiment shown in FIG.
先ず、前部扉２を開き、載置台１７上へ被熱物Ａを置く
。First, the front door 2 is opened and the heated object A is placed on the mounting table 17.
そして、前部扉２を閉じ、排気口４を介して図示しない
真空ポンプによシ真空タンクｌ内を、したがって加熱室
６内を真空条件にする。この段階では、ガス送入口１１
、ガス排出口１２及びガス導入口３は閉じられている。Then, the front door 2 is closed, and the inside of the vacuum tank 1, and therefore the inside of the heating chamber 6, is brought into a vacuum condition by a vacuum pump (not shown) through the exhaust port 4. At this stage, the gas inlet 11
, the gas outlet 12 and the gas inlet 3 are closed.
かくして所定の真空条件下、発熱体９によって加熱室６
内を加熱し、載置台１７上の被熱物Ａを所定時間加熱す
る。この場合、必要に応じて、予め真空タンク１内をガ
ス置換しておいてもよいし、また加熱中に駆動装置１８
を作動させて載置台１７を回転させてもよい０
最後に、所定通シの加熱後、発熱体９による加熱を止め
、ガス導入口３から例えば窒素ガスを真空タンク１内へ
導入し、該窒素ガスをガスクーラ７で冷却しつつ、駆動
装置１０を作動させてガスファン８によシ強制装置させ
、ガス送入口１１からガス排出口１２へと繰シ返し加熱
室６内に通風させる。この段階ではいうまでもなく、駆
動装置１３．１４によって扉１５．１６を作動させるこ
とによシガス送入口１１及びガス排出口１２は開かれて
いて、ガス導入口３及び排気口４は閉じられている。そ
してこの場合、駆動装置１８の作動によシ載置台１７を
回転させ、したがって載置台１７上に置かれている加熱
後の被熱物Ａを回転させておくと、冷却されつつ強制循
環されて繰シ返し加熱室６内を通風する窒素ガスが該被
熱物Ａの全面に等しく接触することとな夛、該被熱物Ａ
は均−且つ迅速に冷却されるのである。Thus, under predetermined vacuum conditions, the heating chamber 6 is heated by the heating element 9.
The inside is heated to heat the object A on the mounting table 17 for a predetermined period of time. In this case, if necessary, the inside of the vacuum tank 1 may be replaced with gas in advance, or the drive device 18 may be replaced during heating.
may be activated to rotate the mounting table 17. Finally, after heating for a predetermined amount, the heating by the heating element 9 is stopped, and nitrogen gas, for example, is introduced into the vacuum tank 1 from the gas inlet 3. While the nitrogen gas is being cooled by the gas cooler 7, the drive device 10 is operated to force the gas fan 8 to blow air repeatedly into the heating chamber 6 from the gas inlet 11 to the gas outlet 12. Needless to say, at this stage, by operating the door 15.16 by the drive device 13.14, the gas inlet 11 and the gas outlet 12 are opened, and the gas inlet 3 and the exhaust outlet 4 are closed. ing. In this case, if the mounting table 17 is rotated by the operation of the drive device 18, and therefore the heated object A placed on the mounting table 17 is rotated, the heated object A is forcedly circulated while being cooled. The nitrogen gas that is repeatedly passed through the heating chamber 6 is brought into contact with the entire surface of the object to be heated A, so that the object to be heated is
is cooled evenly and quickly.
〈発明の効果〉
以上説明した通シであるから、本発Ｆ！ＡＫは、真空条
件下で加熱した被熱物を均−且つ迅速に冷却することが
でき、結局、真空熱処理の効率を向上し、またとシわけ
得られる最終製品の品質を向上するという効果がある。<Effects of the Invention> As explained above, the original F! AK can uniformly and quickly cool down heated objects under vacuum conditions, ultimately improving the efficiency of vacuum heat treatment and, in particular, improving the quality of the final product obtained. be.
第１図は本発明の一実施例を示す断面図（一部省略）で
ある。
１・・・真空タンク、 ２・・・前部扉、３・・・
ガス導入口、 ４・・・排気口、５・・・断熱材、
６・・・加熱室、７・・・ガスクーラ、
８・・・ガスファン、９・・・発熱体、
１０ 、１３ 、１４ 、１８・・・駆動装置、１１・
・・ガス送入口、１２・・・ガス排出口、１５ 、１６
・・・扉、 １７・・・載置台、Ａ・・・被熱物
、FIG. 1 is a sectional view (partially omitted) showing one embodiment of the present invention. 1...Vacuum tank, 2...Front door, 3...
Gas inlet, 4...Exhaust port, 5...Insulating material,
6... Heating chamber, 7... Gas cooler,
8... Gas fan, 9... Heating element, 10, 13, 14, 18... Drive device, 11.
...Gas inlet, 12...Gas outlet, 15, 16
...Door, 17...Placement table, A...Heated object,
Claims (1)
室及びガスクーラ並びにガスファンが装備されており、
前記加熱室内には載置台が位置決めされていて、該載置
台が駆動装置によって回転し得るように構成されて成る
ことを特徴とする真空熱処理装置。1. A heating chamber surrounded by insulation material, a gas cooler, and a gas fan are equipped in a vacuum tank that can be opened and closed.
A vacuum heat treatment apparatus characterized in that a mounting table is positioned within the heating chamber, and the mounting table is configured to be rotated by a drive device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8389385A JPS61243115A (en) | 1985-04-18 | 1985-04-18 | Vacuum heat treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8389385A JPS61243115A (en) | 1985-04-18 | 1985-04-18 | Vacuum heat treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61243115A true JPS61243115A (en) | 1986-10-29 |
| JPS646246B2 JPS646246B2 (en) | 1989-02-02 |
Family
ID=13815316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8389385A Granted JPS61243115A (en) | 1985-04-18 | 1985-04-18 | Vacuum heat treatment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61243115A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02267216A (en) * | 1989-04-08 | 1990-11-01 | Ulvac Corp | Vacuum heat treatment furnace |
| EP0621345A1 (en) * | 1993-04-19 | 1994-10-26 | Hauzer Holding B.V. | Process and device for heat-treating workpieces |
| EP0662519A1 (en) * | 1994-01-07 | 1995-07-12 | Leybold Durferrit GmbH | Apparatus for heat treating workpieces |
| KR100495267B1 (en) * | 2002-10-29 | 2005-06-16 | 주식회사제4기한국 | Automatic vacuum mold heat treatment apparatus |
| CN111715826A (en) * | 2019-03-22 | 2020-09-29 | 白李生物科技有限公司 | Method for improving ductility of endodontic treatment needle and method for manufacturing the needle |
-
1985
- 1985-04-18 JP JP8389385A patent/JPS61243115A/en active Granted
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02267216A (en) * | 1989-04-08 | 1990-11-01 | Ulvac Corp | Vacuum heat treatment furnace |
| EP0621345A1 (en) * | 1993-04-19 | 1994-10-26 | Hauzer Holding B.V. | Process and device for heat-treating workpieces |
| EP0662519A1 (en) * | 1994-01-07 | 1995-07-12 | Leybold Durferrit GmbH | Apparatus for heat treating workpieces |
| KR100495267B1 (en) * | 2002-10-29 | 2005-06-16 | 주식회사제4기한국 | Automatic vacuum mold heat treatment apparatus |
| CN111715826A (en) * | 2019-03-22 | 2020-09-29 | 白李生物科技有限公司 | Method for improving ductility of endodontic treatment needle and method for manufacturing the needle |
| KR20200112432A (en) * | 2019-03-22 | 2020-10-05 | 비엔엘바이오테크 주식회사 | Ductility improvement method of needle for endodontic instrument and manufacturing method of needle |
| US11202688B2 (en) | 2019-03-22 | 2021-12-21 | B&L Biotech, Inc. | Method of improving ductility of needle for root canal treatment devices and method of manufacturing needle for root canal treatment devices including method of improving ductility of needle for root canal treatment devices |
| CN111715826B (en) * | 2019-03-22 | 2022-05-03 | 白李生物科技有限公司 | Method for improving ductility of endodontic treatment needle and method for manufacturing the needle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS646246B2 (en) | 1989-02-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |