JPH0587459A - Vacuum heat treating furnace - Google Patents
Vacuum heat treating furnaceInfo
- Publication number
- JPH0587459A JPH0587459A JP12465191A JP12465191A JPH0587459A JP H0587459 A JPH0587459 A JP H0587459A JP 12465191 A JP12465191 A JP 12465191A JP 12465191 A JP12465191 A JP 12465191A JP H0587459 A JPH0587459 A JP H0587459A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- case
- furnace
- heat
- vacuum heat
- 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
- Powder Metallurgy (AREA)
- Furnace Charging Or Discharging (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Furnace Details (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は被熱処理物を真空炉内に
挿入後、雰囲気（真空中・ガス気流等）中において各種
の熱処理（脱バインダー・ロー付・焼結・焼き戻し・焼
入）を行うための真空熱処理炉に関するものである。BACKGROUND OF THE INVENTION The present invention relates to various heat treatments (debinding, brazing, sintering, tempering, quenching) in an atmosphere (vacuum, gas stream, etc.) after inserting a heat-treated object into a vacuum furnace. ) Related to a vacuum heat treatment furnace.
【０００２】[0002]
【従来の技術】一般に粉末焼結（鉄系材料・磁性材料・
超硬工具材料・その他）の熱処理はこれら材料粉抹をス
テアリン酸亜鉛やパラフィン系のバインダー等によって
固型化し、真空中あるいはガス気流中の雰囲気で脱バイ
ンダーを行いその後焼結を行っている。そして従来の熱
処理は第２図に示すような構造の加熱炉を用いて次のよ
うな手順で行われている。加熱室１０１、開閉式断熱材
１０２を開き被熱処理物をセットする。加熱室１０１、
開閉式断熱材１０２を閉めて真空排気をを行う。真空中
あるいはガス弁１０３よりガスを流入させ減圧気流中で
熱処理を行う。終了後ガスを大気圧まで導入し冷却ファ
ン１０４にて炉内の急冷を行う。冷却後加熱室を開けて
被熱処理物を取り出す。2. Description of the Related Art Generally, powder sintering (iron-based materials, magnetic materials,
For heat treatment of cemented carbide tool materials, etc., powders of these materials are solidified with zinc stearate or a paraffin-based binder, and are debindered in a vacuum or in a gas stream atmosphere and then sintered. The conventional heat treatment is performed in the following procedure using a heating furnace having a structure shown in FIG. The heating chamber 101 and the openable / closable heat insulating material 102 are opened to set a heat-treated object. Heating chamber 101,
The open-close type heat insulating material 102 is closed and vacuum exhaust is performed. Heat treatment is performed in a vacuum or in a reduced pressure gas flow with gas introduced from the gas valve 103. After completion, the gas is introduced up to the atmospheric pressure and the inside of the furnace is rapidly cooled by the cooling fan 104. After cooling, the heating chamber is opened and the object to be heat treated is taken out.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記従来の炉
では以下のような不都合が生じている。 １．バインダー材や蒸気圧の高い金属を加熱すると蒸発
物により炉内を汚染する。 ２．ガス急冷を行ってもケースに入れられた小物部品は
ガスがケースの外側を通るため急速冷却されない。 ３．横型のため被処理物の大きさに比して加熱炉の容積
が大きいので消費電力が多い。However, the above-mentioned conventional furnace has the following disadvantages. 1. When a binder material or a metal having a high vapor pressure is heated, the inside of the furnace is contaminated by the evaporation material. 2. Even if the gas is rapidly cooled, the small parts contained in the case are not rapidly cooled because the gas passes outside the case. 3. Since it is horizontal type, the volume of the heating furnace is large compared to the size of the object to be processed, so that power consumption is large.
【０００４】[0004]
【課題を解決するための手段】本発明は、上記課題を解
決するためケース蓋開閉機構３によって開閉されるケー
ス蓋５を有する被熱処理物の収納ケース４と、該収納ケ
ースに接続されたガス排気管６とをチャンバ１内に有す
ることを特徴とする真空熱処理炉としたものである。な
お、炉を縦型にするとさらに好適である。また、収納ケ
ース４として、底面にガス通過口を有する箱状体を積層
したものを用いると好適である。SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a storage case 4 for an object to be heat-treated having a case lid 5 which is opened and closed by a case lid opening / closing mechanism 3 and a gas connected to the storage case. The vacuum heat treatment furnace is characterized by having an exhaust pipe 6 in the chamber 1. It is more preferable to use a vertical furnace. Further, it is preferable to use, as the storage case 4, a box-shaped body having a gas passage opening on the bottom surface.
【０００５】[0005]
【実施例】以下、第１〜４図により本発明の実施例の詳
細説明をする。被熱処理物の入った収納ケース４を排気
管６の上に設置する。収納ケースとしては、図２に示す
ような底面にガス通過口を有する箱状体を積み重ねたも
のを用いている。なお、箱状体としては、図２に示すも
のの代りに図３，４に示すように、底面を爪部を残して
開口とし、これに端に切欠きを有する底板２０を載置し
たものを用いると、収納ケースの熱容量が大きくなり過
ぎないようにでき、また軽量化が図れる。ケース蓋開閉
機構３によりケース蓋５を開けたまま真空排気を行う。
真空排気完了後、高蒸気圧の被熱処理物の場合はケース
蓋５を閉じてガス導入を行い減圧気流中で熱処理を行
う。蒸発物は収納ケース４内の通過路を通りガスと共に
下部に移動して排気管６を通りトラップ７にてキャッチ
される。熱処理終了後急速冷却時はケース蓋５を開けた
後ガスを大気圧まで導入するが、この際熱交換器８、ブ
ロワ９、切替弁１０（開）を用いる事により配気管６内
をガスが通り、さらにガスの通過路を持った収納ケース
４内をガスが通過するため直接被熱処理物の急冷を行う
事が出来る。又被熱処理物の特性により直接ガスを吹き
つけられない場合は、切替弁１６（開）を用いる事によ
り収納ケースの外部から冷却を行う事が出来る。高真空
熱処理を必要とする被熱処理物の場合はケース蓋５を開
けて油拡散ポンプ１２を用いて炉内を真空にして熱処理
を行う。ケース蓋５は断熱材２に囲まれており均熱帯の
中にあるため上下しても温度分布が変動することがな
い。また、収納ケースがあるため被熱処理物部分の均熱
性が向上する。ケースの積層部のすき間を通じてケース
外よりガスが導入され、これが排気管から排気されるの
で、被熱処理物からの蒸発物によって炉内が汚染されな
い。Embodiments of the present invention will be described in detail below with reference to FIGS. The storage case 4 containing the object to be heat-treated is set on the exhaust pipe 6. As the storage case, a box-shaped body having a gas passage opening on the bottom as shown in FIG. 2 is stacked. As the box-shaped body, instead of the one shown in FIG. 2, as shown in FIGS. 3 and 4, one having a bottom plate which is an opening leaving a claw portion and on which a bottom plate 20 having a notch at the end is placed is used. When used, the heat capacity of the storage case can be prevented from becoming too large, and the weight can be reduced. The case lid opening / closing mechanism 3 evacuates the case with the case lid 5 open.
After the evacuation is completed, in the case of an object to be heat-treated having a high vapor pressure, the case lid 5 is closed, gas is introduced, and the heat treatment is performed in a reduced pressure air stream. The evaporate passes through the passage in the storage case 4, moves to the lower part together with the gas, passes through the exhaust pipe 6, and is caught by the trap 7. At the time of rapid cooling after the heat treatment, the gas is introduced up to the atmospheric pressure after opening the case lid 5. At this time, the heat exchanger 8, the blower 9, and the switching valve 10 (open) are used to keep the gas in the gas distribution pipe 6 from flowing. Since the gas passes through the storage case 4 having a gas passage, the object to be heat-treated can be rapidly cooled. Further, if the gas cannot be directly blown due to the characteristics of the heat-treated object, the switching valve 16 (open) can be used to perform cooling from the outside of the storage case. In the case of an object to be heat-treated requiring high vacuum heat treatment, the case lid 5 is opened and the inside of the furnace is evacuated by using the oil diffusion pump 12 to perform the heat treatment. Since the case lid 5 is surrounded by the heat insulating material 2 and is in the soaking zone, the temperature distribution does not fluctuate even when it is moved up and down. Further, since there is a storage case, the heat uniformity of the part to be heat treated is improved. Gas is introduced from the outside of the case through the gap of the laminated portion of the case and is exhausted from the exhaust pipe, so that the inside of the furnace is not contaminated by the evaporated material from the heat-treated material.
【０００６】[0006]
【発明の効果】本発明は以上のように構成されているの
で以下の効果を奏する。 １．収納ケースが被熱処理物を覆っているため炉内が汚
染されない。 ２．急速冷却時にはケース内部をガスが通過するため試
料の冷却が速い。 ３．ケースの存在により被熱処理物部の均熱性が向上す
る。 さらに、請求項２の発明は、以下の効果をも奏する。 ４．縦型真空チャンバになっているため加熱炉内容積が
小さくできる。 ５．高真空熱処理時に上蓋を開けても温度分布が変化し
ない。Since the present invention is constructed as described above, it has the following effects. 1. Since the storage case covers the object to be heat-treated, the inside of the furnace is not contaminated. 2. During rapid cooling, the gas passes through the inside of the case, so the sample is cooled quickly. 3. The presence of the case improves the heat uniformity of the heat-treated object portion. Furthermore, the invention of claim 2 has the following effects. 4. Since it is a vertical vacuum chamber, the internal volume of the heating furnace can be reduced. 5. The temperature distribution does not change even if the top cover is opened during high-vacuum heat treatment.
【図１】断面図FIG. 1 Sectional view
【図２】斜視図FIG. 2 is a perspective view
【図３】平面図FIG. 3 is a plan view.
【図４】断面図（図３のＡ−Ａ線部分）FIG. 4 is a sectional view (portion AA in FIG. 3).
【図５】断面図（従来例）FIG. 5 is a sectional view (conventional example).
１ チャンバ ２ 断熱材 ３ ケース蓋開閉機構 ４ 収納ケース ５ ケース蓋 ６ ガス排気管 ７ トラップ ８ 熱交換器 ９ ブロワ １０ 吐出切替弁 １１ 主弁 １２ 油拡散ポンプ １３ 真空弁 １４ 油回転ポンプ １５ ガス導入弁 １６ 吐出切替弁 １７ 加熱ヒーター １８ ガス通過口 １９ 箱状体 ２０ 底板 １０１ 加熱室前扉 １０２ 開閉式断熱材 １０３ ガス弁 １０４ 冷却ファン １０５ 熱交換器 １０６ 断熱材 １０７ 加熱ヒーター １０８ 被処理物 １０９ 排気口 DESCRIPTION OF SYMBOLS 1 chamber 2 heat insulating material 3 case lid opening / closing mechanism 4 storage case 5 case lid 6 gas exhaust pipe 7 trap 8 heat exchanger 9 blower 10 discharge switching valve 11 main valve 12 oil diffusion pump 13 vacuum valve 14 oil rotary pump 15 gas introduction valve 16 Discharge Switching Valve 17 Heating Heater 18 Gas Passage Port 19 Box 20 Bottom Plate 101 Heating Chamber Front Door 102 Opening / Closing Insulation Material 103 Gas Valve 104 Cooling Fan 105 Heat Exchanger 106 Insulation Material 107 Heating Heater 108 Workpiece 109 Exhaust Port
フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ２７Ｂ 5/05 7727−4Ｋ Ｆ２７Ｄ 7/06 Ａ 8825−4Ｋ 9/00 8825−4Ｋ Continuation of the front page (51) Int.Cl. 5 Identification number Office reference number FI technical display location F27B 5/05 7727-4K F27D 7/06 A 8825-4K 9/00 8825-4K
Claims (3)
るケース蓋（５）を有する被熱処理物の収納ケース
（４）と、該収納ケースに接続されたガス排気管（６）
とをチャンバ（１）内に有することを特徴とする真空熱
処理炉。1. A storage case (4) having a case lid (5) which is opened and closed by a case lid opening / closing mechanism (3), and a gas exhaust pipe (6) connected to the storage case.
A vacuum heat treatment furnace, characterized in that and (2) are provided in the chamber (1).
るケース蓋（５）を有する被熱処理物の収納ケース
（４）と、該収納ケースに接続されたガス排気管（６）
とをチャンバ（１）内に有することを特徴とする縦型真
空熱処理炉。2. A storage case (4) having a case lid (5) opened and closed by a case lid opening / closing mechanism (3), and a gas exhaust pipe (6) connected to the storage case.
1. A vertical vacuum heat treatment furnace, characterized in that and (2) are provided in the chamber (1).
て収納ケース（４）とした請求項２記載の真空熱処理
炉。3. The vacuum heat treatment furnace according to claim 2, wherein a box-shaped body having a gas passage on the bottom surface is laminated to form a storage case (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3124651A JPH0776670B2 (en) | 1991-04-30 | 1991-04-30 | Vacuum heat treatment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3124651A JPH0776670B2 (en) | 1991-04-30 | 1991-04-30 | Vacuum heat treatment furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0587459A true JPH0587459A (en) | 1993-04-06 |
| JPH0776670B2 JPH0776670B2 (en) | 1995-08-16 |
Family
ID=14890686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3124651A Expired - Fee Related JPH0776670B2 (en) | 1991-04-30 | 1991-04-30 | Vacuum heat treatment furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0776670B2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002350068A (en) * | 2001-05-29 | 2002-12-04 | Daido Steel Co Ltd | Vacuum furnace |
| CN100366762C (en) * | 2005-12-29 | 2008-02-06 | 上海交通大学 | Heat treatment furnace employing heat pipe to quickly lower temperature |
| JP2008201670A (en) * | 2008-03-24 | 2008-09-04 | Ngk Insulators Ltd | Method of manufacturing non-oxide ceramic sintered compact |
| JP2009192124A (en) * | 2008-02-14 | 2009-08-27 | Ngk Insulators Ltd | Heat treatment furnace |
| JP2010007128A (en) * | 2008-06-26 | 2010-01-14 | Toyota Motor Corp | Heat-treatment tool and heat-treatment apparatus |
| JP2012515263A (en) * | 2009-01-14 | 2012-07-05 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Charge frame and quenching device equipped with the charge frame |
| WO2012108683A2 (en) * | 2011-02-08 | 2012-08-16 | Lg Innotek Co., Ltd. | Vacuum heat treatment apparatus |
| KR20130074706A (en) * | 2011-12-26 | 2013-07-04 | 엘지이노텍 주식회사 | Vacuum heat treatment apparatus |
| KR20130076367A (en) * | 2011-12-28 | 2013-07-08 | 엘지이노텍 주식회사 | Vacuum heat treatment apparatus |
| JP3185037U (en) * | 2013-05-17 | 2013-07-25 | サンアロイ工業株式会社 | Sintering furnace for pre-sintering of sintered metal |
| CN103882197A (en) * | 2014-03-24 | 2014-06-25 | 浙江三品轴承有限公司 | Double-layer intermittent non-oxidation rapid annealing furnace |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62223593A (en) * | 1986-03-22 | 1987-10-01 | 大同特殊鋼株式会社 | Method of cooling treated substance in muffle furnace |
-
1991
- 1991-04-30 JP JP3124651A patent/JPH0776670B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62223593A (en) * | 1986-03-22 | 1987-10-01 | 大同特殊鋼株式会社 | Method of cooling treated substance in muffle furnace |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002350068A (en) * | 2001-05-29 | 2002-12-04 | Daido Steel Co Ltd | Vacuum furnace |
| CN100366762C (en) * | 2005-12-29 | 2008-02-06 | 上海交通大学 | Heat treatment furnace employing heat pipe to quickly lower temperature |
| JP2009192124A (en) * | 2008-02-14 | 2009-08-27 | Ngk Insulators Ltd | Heat treatment furnace |
| JP2008201670A (en) * | 2008-03-24 | 2008-09-04 | Ngk Insulators Ltd | Method of manufacturing non-oxide ceramic sintered compact |
| JP2010007128A (en) * | 2008-06-26 | 2010-01-14 | Toyota Motor Corp | Heat-treatment tool and heat-treatment apparatus |
| US8900509B2 (en) | 2009-01-14 | 2014-12-02 | Robert Bosch Gmbh | Charging frame and quenching device having a charging frame |
| JP2012515263A (en) * | 2009-01-14 | 2012-07-05 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Charge frame and quenching device equipped with the charge frame |
| WO2012108683A2 (en) * | 2011-02-08 | 2012-08-16 | Lg Innotek Co., Ltd. | Vacuum heat treatment apparatus |
| KR101273048B1 (en) * | 2011-02-08 | 2013-06-10 | 엘지이노텍 주식회사 | Vacuum heat treatment apparatus |
| WO2012108683A3 (en) * | 2011-02-08 | 2012-12-20 | Lg Innotek Co., Ltd. | Vacuum heat treatment apparatus |
| KR20130074706A (en) * | 2011-12-26 | 2013-07-04 | 엘지이노텍 주식회사 | Vacuum heat treatment apparatus |
| KR20130076367A (en) * | 2011-12-28 | 2013-07-08 | 엘지이노텍 주식회사 | Vacuum heat treatment apparatus |
| JP3185037U (en) * | 2013-05-17 | 2013-07-25 | サンアロイ工業株式会社 | Sintering furnace for pre-sintering of sintered metal |
| CN103882197A (en) * | 2014-03-24 | 2014-06-25 | 浙江三品轴承有限公司 | Double-layer intermittent non-oxidation rapid annealing furnace |
| CN103882197B (en) * | 2014-03-24 | 2016-04-27 | 浙江三品轴承有限公司 | A kind of double-deck intermittent type non-oxidation quick anneal oven |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0776670B2 (en) | 1995-08-16 |
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