JPS646246B2 - - Google Patents
Info
- Publication number
- JPS646246B2 JPS646246B2 JP8389385A JP8389385A JPS646246B2 JP S646246 B2 JPS646246 B2 JP S646246B2 JP 8389385 A JP8389385 A JP 8389385A JP 8389385 A JP8389385 A JP 8389385A JP S646246 B2 JPS646246 B2 JP S646246B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- heating chamber
- mounting table
- vacuum
- drive device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000010438 heat treatment Methods 0.000 claims description 42
- 239000011810 insulating material Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 52
- 238000001816 cooling Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 239000000047 product Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
Landscapes
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Furnace Details (AREA)
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
熱後の被熱物へ繰り返し接触させることにより冷
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 object by repeatedly bringing it into contact with the object to be heated.
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一且つ迅速
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
ーラ並びにガスフア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
は駆動装置により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を真空
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
フアンで強制循環させて該ガスを送入口から排出
口へと繰り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
て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、冷却時にはこの遊動扉がガスの送風力
で持ち上がることにより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58−39888）
等がある。<Prior art and its problems> Conventionally, the following various devices have been proposed as vacuum heat treatment devices, each of which is equipped with a heating chamber surrounded by a heat insulating material, a gas cooler, and a gas fan in an openable/closable vacuum tank. There is. 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 a door that can be opened and closed by a drive device is attached to the gas inlet and the gas outlet. A gas cooler that heats the object to be heated in the heating chamber under vacuum conditions with the door closed, and opens the door at the stage of cooling the object after heating, and the gas introduced into the vacuum tank sequentially follows the heating chamber. The gas is repeatedly ventilated into the heating chamber from the inlet to the outlet by forced circulation with a gas fan while being cooled by a gas fan, and at this time, the gas is brought into contact with the heated object in the heating chamber, and the object is heated. There is a cooling device. Another example is a device in which a heat shield plate 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. , a type of floating door is attached instead of the door driven by the drive device as described above, and during heating, this floating door closes the gas inlet and gas outlet by its own weight, but during cooling, this floating door closes the gas inlet and gas outlet. A device that opens the gas inlet and gas outlet by lifting it up with the gas blowing force (Special Publication No. 58-39888)
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、この解決手段
＞
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。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
にガスフア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
装置によつ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. Therefore, in the present invention, an openable and closable vacuum tank is equipped with a heating chamber surrounded by a heat insulating material, a gas cooler, and a gas fan, and a mounting table is positioned in the heating chamber, and the mounting table is connected to a drive device. The present invention relates to a vacuum heat treatment apparatus characterized in that it is configured to be rotated by.
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
能になつており、この真空タンク１の後方側壁に
は、バルブ付きのガス導入口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
るガスフアン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、ガスフアン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。<Example> FIG. 1 is a sectional view (partially omitted) showing an example 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 a valve and an exhaust port 4 with a valve connected to a vacuum pump (not shown). have been established respectively. Inside the vacuum tank 1 are 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 the heating chamber 6, and a gas fan 8 is installed.
is connected to the drive device 10. Further, a gas inlet 11 is provided in front of the heating chamber 6, and a gas outlet 12 is provided in the rear of the heating chamber 6, and the gas inlet 11 and the gas outlet 12 are connected to drive devices 13 and 14, respectively. Doors 15 and 16 are attached to open and close the gas inlet 11 and 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によつて回転
し得るように構成されている。通常、載置台１７
は少なくともその加熱室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り、また駆動装
置１８は駆動モータと減速機とから構成されて載
置台１７の回転数を適宜制御し得るようになつて
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 configured to be rotatable by the drive device 18. Usually, the mounting table 17
At least the component parts exposed in the heating chamber 6 are made of heat-resistant material, the mounting table 17 is fitted in for easy replacement, and the drive device 18 is composed of a drive motor and a speed reducer. The rotation speed of the mounting table 17 can be controlled as appropriate.
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.
＜作 用＞
次に、第１図の実施例によつて本発明の作用を
説明する。<Function> Next, the function of the present invention will be explained 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り真空タンク１内を、し
たがつて加熱室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。かくして所定の真空
条件下、発熱体９によつて加熱室６内に加熱し、
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。 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, gas outlet 12, and gas inlet 3 are closed. Thus, under predetermined vacuum conditions, the heating element 9 heats the inside of the heating chamber 6,
The object to be heated A on the mounting table 17 is heated 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 operated to rotate the mounting table 17 during heating.
最後に、所定通りの加熱後、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
フアン８により強制循置させ、ガス送入口１１か
らガス排出口１２へと繰り返し加熱室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によつて扉１５，１６を作動させるこ
とによりガス送入口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
により載置台１７を回転させ、したがつて載置台
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り返
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り、該被熱物Ａは
均一且つ迅速に冷却されるのである。 Finally, after heating as specified, 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, and while the nitrogen gas is cooled by the gas cooler 7, the drive device 10 is operated. The gas is forced to circulate by the gas fan 8, and the heating chamber 6 is repeatedly ventilated from the gas inlet 11 to the gas outlet 12. Needless to say, at this stage, the gas inlet 11 and the gas outlet 12 are opened by operating the doors 15 and 16 by the drive devices 13 and 14, and the gas inlet 3 and the exhaust outlet 4 are closed. It is being In this case, when the mounting table 17 is rotated by the operation of the drive device 18, and the heated object A placed on the mounting table 17 is rotated, the object A to be heated placed on the mounting table 17 is forcedly circulated while being cooled. The nitrogen gas repeatedly passed through the heating chamber 6 comes into equal contact with the entire surface of the object A, and the object A is cooled uniformly and quickly.
＜発明の効果＞
以上説明した通りであるから、本発明には、真
空条件下で加熱した被熱物を均一且つ迅速に冷却
することができ、結局、真空熱処理の効率を向上
し、またとり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 present invention has the following advantages: it is possible to uniformly and quickly cool a heated object under vacuum conditions, and as a result, the efficiency of vacuum heat treatment is improved; This has the effect of improving the quality of the final product obtained.
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…ガスフアン、９…発熱体、１
０，１３，１４，１８…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, 1
0, 13, 14, 18... Drive device, 11... Gas inlet, 12... Gas outlet, 15, 16... Door, 17
...Placement table, A...Heated object.
Claims (1)
た加熱室及びガスクーラ並びにガスフアンが装備
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つて回転し
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 a heat insulating material, a gas cooler, and a gas fan are installed in an openable and closable vacuum tank, and a mounting table is positioned within the heating chamber, and the mounting table is rotated by a drive device. A vacuum heat treatment apparatus characterized in that it is configured to obtain
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 JPS61243115A (en) | 1986-10-29 |
| JPS646246B2 true 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) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02267216A (en) * | 1989-04-08 | 1990-11-01 | Ulvac Corp | Vacuum heat treatment furnace |
| DE4312627A1 (en) * | 1993-04-19 | 1994-10-20 | Hauzer Holding | Method and device for heat treatment of objects |
| DE4400326C2 (en) * | 1994-01-07 | 2002-10-31 | Ald Vacuum Techn Ag | Device for hardening metallic workpieces |
| KR100495267B1 (en) * | 2002-10-29 | 2005-06-16 | 주식회사제4기한국 | Automatic vacuum mold heat treatment apparatus |
| KR102280519B1 (en) * | 2019-03-22 | 2021-07-29 | 비엔엘바이오테크 주식회사 | Ductility improvement method of needle for endodontic instrument and manufacturing method of needle |
-
1985
- 1985-04-18 JP JP8389385A patent/JPS61243115A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61243115A (en) | 1986-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2006266616A (en) | Heat treatment furnace | |
| US7377774B2 (en) | Change-over apparatus for cooling gas passages in vacuum heat treating furnace | |
| JPS646246B2 (en) | ||
| JPH05230528A (en) | Method for accelerating gas circulation cooling in vacuum furnace | |
| US4086050A (en) | Method and apparatus for gas circulation in a heat treating furnace | |
| US6207931B1 (en) | Method for the heat treatment of workpieces | |
| JPH0633944B2 (en) | Roller hearth type vacuum furnace | |
| JP4537522B2 (en) | Intermittently driven vacuum carburizing furnace | |
| JPH05157461A (en) | Heating furnace | |
| JPH01230984A (en) | Hot static hydraulic pressurizing device and cooling operation for the same device | |
| JPH093533A (en) | Cooling device in heating chamber for heat treatment | |
| US3841922A (en) | Process for the annealing of precipitation hardening alloys | |
| JPH0599572A (en) | Continuous vacuum furnace | |
| JPH0726696U (en) | Vacuum furnace | |
| JP3486921B2 (en) | Dew condensation prevention method in water-cooled vacuum heat treatment furnace | |
| CN211316963U (en) | Heating furnace capable of being heated uniformly | |
| JPH02267216A (en) | Vacuum heat treatment furnace | |
| JP3098998B1 (en) | Heat treatment method of vertical continuous annealing furnace for copper / copper alloy strip | |
| JP2871111B2 (en) | Cooling method in vacuum furnace | |
| JPS60262924A (en) | Rotary-hearth coil heating furnace | |
| JP2001263957A (en) | Vacuum furnace | |
| JP3103905B2 (en) | Furnace pressure adjustment method of batch type atmosphere furnace | |
| JPH08193217A (en) | Gas and oil cooling type vacuum furnace | |
| JPS6040592Y2 (en) | Cooling device for oil and gas in vacuum heat treatment furnace | |
| JPH0816590B2 (en) | Vacuum sintering furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |