JP3915143B2 - Coil heat treatment furnace and operating method thereof - Google Patents

Coil heat treatment furnace and operating method thereof Download PDF

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Publication number
JP3915143B2
JP3915143B2 JP19553396A JP19553396A JP3915143B2 JP 3915143 B2 JP3915143 B2 JP 3915143B2 JP 19553396 A JP19553396 A JP 19553396A JP 19553396 A JP19553396 A JP 19553396A JP 3915143 B2 JP3915143 B2 JP 3915143B2
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Japan
Prior art keywords
chamber
purge chamber
purge
heat treatment
stand tray
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Expired - Fee Related
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JP19553396A
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Japanese (ja)
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JPH1017944A (en
Inventor
崇 石本
賢治 川手
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Daido Steel Co Ltd
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Daido Steel Co Ltd
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Priority to JP19553396A priority Critical patent/JP3915143B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は線状材,帯状材等の金属材料をコイル状に巻回してなるコイル状物の熱処理炉およびその運転方法に関するものである。
【0002】
【従来の技術】
コイル状物を焼鈍するのに従来からベル型炉が一般的に使用されている。ところでベル型炉は、周知のように運転の度にベル型の大きなアウターカバーとインナーカバーとを昇降装置で吊ってコイル状物の上に被せるものであるから、自動化,省力化が容易でなく、処理能力が低い割に操業スペースを要するという問題点があった。また、コイル状物を横にして数段に積み重ね加熱するものであるので、熱が充分に内芯部まで行き届かず±10〜15℃の温度差ができ均一加熱ができない欠点があると共に、同室にてコイル状物を冷却するので昇温に時間がかかり熱消費量もきわめて大きい欠点があった。
【0003】
【発明が解決しようとする課題】
そこで本発明は、自動化,省力化が容易で処理能力を向上させられると共に、均一加熱と省エネルギー化を可能とするコイル状物の熱処理炉およびその運転方法を提供するものである。
【0004】
【課題を解決するための手段】
そのために本発明のコイル熱処理炉は、コイル状物の中心に水平支持棒を貫挿して該コイル状物を吊下支持し得る前記スタンドトレイと、正面扉より前記スタンドトレイを出入りし得るように形成されたパージ室と、該パージ室の一端部に出入口部が対面し該パージ室内より前記スタンドトレイが出入りし得るように形成された加熱室と、該パージ室の他端部に出入口部が対面し該パージ室より前記スタンドトレイが出入りし得るように形成された冷却室とからなることを特徴とする。 また本発明は上記コイル熱処理炉において、パージ室が耐圧性に形成され真空ポンプにより該パーシ室内の空気を排出し得るようにしたことを特徴とする。
さらに本発明に係るコイル熱処理炉の運転方法は、コイル状物が支持されたスタンドトレイを正面扉からパージ室内に挿入し該パージ室内を雰囲気ガスに置換してから該スタンドトレイを加熱室に移動してコイル状物を所定の熱処理温度に加熱し、該加熱室内のスタンドトレイをパージ室を経て冷却室に移動させた後、該パージ室内に正面扉から新らたなコイル状物が支持されたスタンドトレイを挿入して該パージ室内を雰囲気ガスに置換し該スタンドトレイを加熱室に移動することにより該加熱室内のコイル状物を所定の熱処理温度に加熱しその間に前記冷却室内のコイル状物を所定温度に冷却し、該冷却室内のスタンドトレイをパージ室を経て正面扉から抽出した後、加熱室内のスタンドトレイをパージ室を経て冷却室に移動させ、以下同様にコイル状物が支持されたスタンドトレイをパージ室→加熱室→パージ室→冷却室→パージ室の順に移動させ加熱と冷却とが同時進行されるようにしたことを特徴とする。
【0005】
【発明の実施の形態】
次に本発明の実施の形態を説明する。図1にこのコイル熱処理炉の水平断面平面図、図2にその縦断面正面図、図3に図2のAーA線断面図、図4に図2のBーB線断面図を示す。図において、1は耐圧性の容器からなるパージ室、2はパージ室1の正面壁に開設された正面開口、3は該正面開口2を開閉し得る正面扉、4は該正面扉3を開閉するための昇降装置である。5は正面扉3の前方床面に敷設されたレール、6は該レール5上を走行し得るように配設された台車、8は該台車6の前面に設けられたフォーク7上に支持されたスタンドトレイである。
【0006】
スタンドトレイ8は、平板状のトレイ部9上に支柱10が樹立され、コイル状物11の中心に貫挿された水平支持棒12の両端を該支柱10に支持することにより該コイル状物11を吊下支持している。そして正面扉3を開けることにより該スタンドトレイ8をパージ室1内に挿入し得る。
【0007】
またパージ室1の左右両端部に開口13,14が形成され、該開口13,14に設けられた開閉扉15,16は昇降装置17,18より上下動し得るように構成されている。20はその出入口部21がパージ室1の一方の開口13と相対面するように配設された加熱室、22は該出入口部21に昇降装置23により上下動するように吊下された出入口扉である。なお開閉扉15,出入口扉22は夫々扉室42中に配備されている。また、24はその出入口部25がパージ室1の他方の開口14と相対面するように配設された冷却室、27は該出入口部25に昇降装置26により上下動するように吊下された出入口扉である。なお、開閉扉16,出入口扉27は夫々扉室43中に配備されている。また、パージ室1の床面から加熱室20の床面および冷却室24の床面にわたっては一連に搬送ローラ41,41,41,…が配設され、該ローラ上に前記スタンドトレイ8を移動可能に支持し得る。
【0008】
加熱室20は、図3にも示したように、天井部に循環ファン28が設けられ、該循環ファン28より下方にバッフル29がスタンドトレイ8を囲うように垂下状に設けられ、該循環ファン28を回転させることにより矢印で示したように雰囲気ガスを循環させられる。30は該バッフル29の外側に雰囲気ガスを加熱するために設けられたラジアントチューブバーナである。なお、バッフル29のコイル状物11と相対する部面には多数の通気孔が開設されている。
【0009】
また冷却室24は、図4に示したように、天井部に循環ファン31が設けられ、該循環ファン31より下方にバッフル32が垂下状に設けられ、該バッフル32の外側に冷却器33が設けられ、該循環ファン31の回転により冷却室24内の雰囲気ガスが矢印で示したように循環するようにしている。なおバッフル32のコイル状物11と相対する部面は同様に多数の通気孔が開設されている。
【0010】
35はバルブ36,37,38を介して夫々パージ室1,加熱室20,冷却室24に連通している雰囲気ガス発生器である。また、39はロータリーポンプとメカブポンプとからなる真空ポンプで、該真空ポンプ39はバルブ40を介してパージ室1と連通している。
【0011】
次にこのコイル熱処理炉の運転方法を説明する。コイル状物11が吊下支持されたスタンドトレイ8を台車6によりパージ室1に正面開口2より挿入し、正面扉3を閉じることによりパージ室1を気密に保ち、真空ポンプ39を作動させることにより該パージ室1内の空気を排出する。そしてバルブ36を開けパージ室1内に雰囲気ガスを供給する。なお、加熱室20および冷却室24内は予め雰囲気ガスに置換しておく。そして、開閉扉15,出入口扉22を開け、搬送ローラ41,41,41,…上を転動させることによりパージ室1の一端部の開口13より該スタンドトレイ8を加熱室20に移動させ、開閉扉15,出入口扉22を閉じ、ラジアントチューブバーナ30を熱源として循環ファン28により該加熱室20内の雰囲気ガスを循環させることにより、該加熱室20内のコイル状物11を目的とする焼鈍温度に加熱する。
【0012】
次いで開閉扉15,16,出入口扉22,27を開け、該スタンドトレイ8をパージ室1を経て冷却室24に移動する。そして、開閉扉15,16,出入口扉22,27を閉じると共に、冷却器33により該冷却室24内の雰囲気ガスを冷却しつつ循環ファン31によりその雰囲気ガスを循環させることにより該冷却室24内のコイル状物11を冷却する。その冷却をしている間に、次の新らたなコイル状物11が支持されたスタンドトレイ8を台車6によりパージ室1に挿入し、同様に該パージ室1内の空気を排出させて雰囲気ガスに置換し、該スタンドトレイ8を加熱室20に移動させ該コイル状物11を目的とする焼鈍温度に加熱する。このように加熱室20におけるコイル状物11の加熱と冷却室24におけるコイル状物11の冷却とが同時に進行されるようにする。そして冷却室24内のコイル状物11の冷却が終えたところで開閉扉16,出入口扉27を開き、該冷却室24内のスタンドトレイ8をパージ室1に移動させ、正面扉3を開け台車6により該スタンドトレイ8を外に抽出する。次いで正面扉3を閉じ開閉扉15,16,出入口扉22,27を開けて加熱室20内のスタンドトレイ8を冷却室24に移動する。そして正面扉3をまた開けてまた新らたなコイル状物11が支持されたスタンドトレイ8をパージ室1に挿入し雰囲気ガスに置換して該スタンドトレイ8を加熱室20に移動し加熱する。以下同様にしてスタンドトレイ8に支持したコイル状物11を雰囲気ガス中で熱処理することができる。
【0013】
このように本発明のコイル熱処理炉では、コイル状物11を水平支持棒12により吊下支持することによりその両側から熱風が当たり得るようになるので、コイル状物11を短時間で均一加熱することができ温度差も±3℃程度ときわめて少ないものとなり理想的な均一加熱が達成される。また、常にパージ室1を経てスタンドトレイ8を移動させるようにしたので、加熱室20内または冷却室24内等に外気が侵入するのが防止されると共に、加熱室20および冷却室24内の温度変動を少なくできるので熱エネルギーを無駄なく使用することができる。また、スタンドトレイ8を所定温度に保たれた加熱室20や冷却室24に一定時間滞在させ時間管理によってスタンドトレイ8を移動させることにより、所期の熱処理をなし得るので、自動化,省力化が容易に達成できると共に、加熱と冷却を両室にて同時進行させることにより処理能力を大幅に向上し得る。
さらにまた本発明のコイル熱処理炉ではベル型炉のように毎回炉内を大気にオープンすることがなく真空パージ室によって外気の侵入を防ぐことができるので、炉内の雰囲気の露点を低く維持することが可能となり、炉内の雰囲気露点が高くなるのが防止される。このため、本発明のコイル熱処理炉で熱処理することにより被処理材を表面性状の非常に清浄なものにすることができる。
【0014】
【発明の効果】
このように本発明によれば、コイル熱処理炉の自動化,省力化を容易にすると共に、処理能力を向上させ、均一加熱および省エネルギー化が達成されるなど有益な効果がある。
【図面の簡単な説明】
【図1】本発明に係るコイル熱処理炉の水平断面平面図。
【図2】図1のコイル熱処理炉の縦断面正面図。
【図3】図2のA−A線断面図。
【図4】図2のB−B線断面図。
【符号の説明】
1 パージ室
2 正面開口
3 正面扉
8 スタンドトレイ
10 支柱
11 コイル状物
12 水平支持棒
13,14 開口
15,16 開閉扉
20 加熱室
21 出入口部
24 冷却室
25 出入口部
28 循環ファン
30 ラジアントチューブバーナ
31 循環ファン
33 冷却器
35 雰囲気ガス発生器
39 真空ポンプ
41 搬送ローラ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat treatment furnace for a coiled material obtained by winding a metal material such as a wire material or a belt material into a coil shape, and an operation method thereof.
[0002]
[Prior art]
Conventionally, a bell-type furnace has been generally used to anneal a coil-shaped object. By the way, as is well known, the bell-type furnace hangs a large bell-shaped outer cover and inner cover with a lifting device and covers them on a coiled object every time it is operated, so automation and labor saving are not easy. However, there is a problem that an operation space is required for a low processing capacity. In addition, since the coiled material is stacked and heated in several stages, there is a drawback that the heat does not reach the inner core part sufficiently and a temperature difference of ± 10 to 15 ° C. can be produced and uniform heating cannot be performed. Since the coiled material is cooled in the same room, it takes time to raise the temperature and the heat consumption is extremely large.
[0003]
[Problems to be solved by the invention]
Accordingly, the present invention provides a heat treatment furnace for a coiled material that can be easily automated and labor-saving, can improve the processing capacity, and can be uniformly heated and save energy, and an operating method thereof.
[0004]
[Means for Solving the Problems]
For this purpose, the coil heat treatment furnace of the present invention is configured so that a horizontal support rod can be inserted into the center of the coiled material to suspend and support the coiled material, and the stand tray can enter and exit from the front door. The formed purge chamber, a heating chamber formed so that the inlet / outlet portion faces one end of the purge chamber and the stand tray can enter / exit from the purge chamber, and an inlet / outlet portion is formed at the other end of the purge chamber. And a cooling chamber formed so that the stand tray can enter and exit from the purge chamber. According to the present invention, in the coil heat treatment furnace, the purge chamber is formed with pressure resistance so that the air in the peri chamber can be discharged by a vacuum pump.
Furthermore, the operation method of the coil heat treatment furnace according to the present invention is such that the stand tray on which the coiled material is supported is inserted into the purge chamber from the front door, the purge chamber is replaced with atmospheric gas, and then the stand tray is moved to the heating chamber. The coiled product is heated to a predetermined heat treatment temperature, and the stand tray in the heating chamber is moved to the cooling chamber through the purge chamber, and then a new coiled product is supported from the front door in the purge chamber. The purged chamber is inserted to replace the purge chamber with atmospheric gas, and the stand tray is moved to the heating chamber to heat the coiled material in the heating chamber to a predetermined heat treatment temperature, while the coiled material in the cooling chamber is heated. The object is cooled to a predetermined temperature, and the stand tray in the cooling chamber is extracted from the front door through the purge chamber, and then the stand tray in the heating chamber is moved to the cooling chamber through the purge chamber. Coil-like material purge chamber stand trays supported → heating chamber → purge chamber → the heat is moved in the order of the cooling chamber → purge chamber cooling and is characterized in that so as to be simultaneously proceeding as.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described. 1 is a horizontal sectional plan view of the coil heat treatment furnace, FIG. 2 is a longitudinal sectional front view thereof, FIG. 3 is a sectional view taken along line AA in FIG. 2, and FIG. 4 is a sectional view taken along line BB in FIG. In the figure, 1 is a purge chamber composed of a pressure-resistant container, 2 is a front opening formed in the front wall of the purge chamber 1, 3 is a front door that can open and close the front opening 2, and 4 is an opening and closing of the front door 3. It is a lifting device for doing. 5 is a rail laid on the front floor surface of the front door 3, 6 is a carriage arranged to run on the rail 5, and 8 is supported on a fork 7 provided on the front surface of the carriage 6. Stand tray.
[0006]
In the stand tray 8, a support column 10 is established on a flat tray portion 9, and both ends of a horizontal support rod 12 inserted through the center of the coiled product 11 are supported by the support column 10, thereby the coiled product 11. The suspension is supported. The stand tray 8 can be inserted into the purge chamber 1 by opening the front door 3.
[0007]
Further, openings 13 and 14 are formed at both left and right ends of the purge chamber 1, and the open / close doors 15 and 16 provided in the openings 13 and 14 are configured to be movable up and down by the lifting devices 17 and 18. Reference numeral 20 denotes a heating chamber in which the inlet / outlet portion 21 is arranged so as to face one opening 13 of the purge chamber 1, and 22 denotes an inlet / outlet door suspended from the inlet / outlet portion 21 by an elevating device 23. It is. The open / close door 15 and the entrance door 22 are provided in the door chamber 42, respectively. Reference numeral 24 denotes a cooling chamber in which the inlet / outlet portion 25 is disposed so as to face the other opening 14 of the purge chamber 1, and 27 is suspended from the inlet / outlet portion 25 so as to be moved up and down by an elevating device 26. It is an entrance door. The open / close door 16 and the entrance door 27 are provided in the door chamber 43, respectively. Further, transport rollers 41, 41, 41,... Are arranged in a series from the floor surface of the purge chamber 1 to the floor surface of the heating chamber 20 and the floor surface of the cooling chamber 24, and the stand tray 8 is moved on the rollers. It can be supported as possible.
[0008]
As shown in FIG. 3, the heating chamber 20 is provided with a circulation fan 28 at the ceiling, and a baffle 29 is provided below the circulation fan 28 so as to surround the stand tray 8. By rotating 28, the atmospheric gas can be circulated as shown by the arrows. Reference numeral 30 denotes a radiant tube burner provided to heat the atmospheric gas outside the baffle 29. In addition, a large number of air holes are formed in the surface of the baffle 29 facing the coiled object 11.
[0009]
As shown in FIG. 4, the cooling chamber 24 is provided with a circulation fan 31 on the ceiling, a baffle 32 is provided below the circulation fan 31, and a cooler 33 is disposed outside the baffle 32. An atmospheric gas in the cooling chamber 24 is circulated as indicated by an arrow by rotation of the circulation fan 31. In addition, many vent holes are similarly opened in the part surface facing the coil-shaped object 11 of the baffle 32.
[0010]
An atmospheric gas generator 35 communicates with the purge chamber 1, the heating chamber 20, and the cooling chamber 24 through valves 36, 37, and 38, respectively. Reference numeral 39 denotes a vacuum pump composed of a rotary pump and a mechanical pump. The vacuum pump 39 communicates with the purge chamber 1 via a valve 40.
[0011]
Next, the operation method of this coil heat treatment furnace will be described. The stand tray 8 on which the coiled object 11 is suspended and supported is inserted into the purge chamber 1 from the front opening 2 by the carriage 6, and the purge chamber 1 is kept airtight by closing the front door 3, and the vacuum pump 39 is operated. Thus, the air in the purge chamber 1 is discharged. Then, the valve 36 is opened to supply atmospheric gas into the purge chamber 1. Note that the inside of the heating chamber 20 and the cooling chamber 24 is previously replaced with an atmospheric gas. Then, the opening / closing door 15 and the entrance door 22 are opened, and the stand tray 8 is moved to the heating chamber 20 from the opening 13 at one end of the purge chamber 1 by rolling on the transport rollers 41, 41, 41,. The opening / closing door 15 and the entrance door 22 are closed, and the atmospheric gas in the heating chamber 20 is circulated by the circulation fan 28 using the radiant tube burner 30 as a heat source, thereby annealing the coiled object 11 in the heating chamber 20 for the purpose. Heat to temperature.
[0012]
Next, the open / close doors 15 and 16 and the entrance doors 22 and 27 are opened, and the stand tray 8 is moved to the cooling chamber 24 through the purge chamber 1. Then, the open / close doors 15 and 16 and the entrance doors 22 and 27 are closed, and the atmosphere gas in the cooling chamber 24 is cooled by the cooler 33 and the atmosphere gas is circulated by the circulation fan 31 to thereby circulate in the cooling chamber 24. The coiled article 11 is cooled. During the cooling, the stand tray 8 on which the next new coiled object 11 is supported is inserted into the purge chamber 1 by the carriage 6, and the air in the purge chamber 1 is similarly discharged. The atmosphere is replaced with atmospheric gas, and the stand tray 8 is moved to the heating chamber 20 to heat the coiled article 11 to a target annealing temperature. In this way, the heating of the coiled object 11 in the heating chamber 20 and the cooling of the coiled object 11 in the cooling chamber 24 proceed simultaneously. When the coiled object 11 in the cooling chamber 24 has been cooled, the door 16 and the door 27 are opened, the stand tray 8 in the cooling chamber 24 is moved to the purge chamber 1, the front door 3 is opened, and the carriage 6 is opened. Thus, the stand tray 8 is extracted to the outside. Next, the front door 3 is closed, the doors 15 and 16 and the doors 22 and 27 are opened, and the stand tray 8 in the heating chamber 20 is moved to the cooling chamber 24. Then, the front door 3 is opened again, and the stand tray 8 on which the new coiled material 11 is supported is inserted into the purge chamber 1 and replaced with the atmospheric gas, and the stand tray 8 is moved to the heating chamber 20 and heated. . Similarly, the coiled material 11 supported on the stand tray 8 can be heat-treated in the atmospheric gas.
[0013]
As described above, in the coil heat treatment furnace of the present invention, the coiled object 11 is suspended and supported by the horizontal support rod 12 so that hot air can be hit from both sides thereof, so that the coiled object 11 is uniformly heated in a short time. Therefore, the temperature difference is as small as about ± 3 ° C., and ideal uniform heating is achieved. Further, since the stand tray 8 is always moved through the purge chamber 1, it is possible to prevent the outside air from entering the heating chamber 20 or the cooling chamber 24, and the heating chamber 20 and the cooling chamber 24. Since temperature fluctuation can be reduced, heat energy can be used without waste. In addition, the desired heat treatment can be performed by staying in the heating chamber 20 or the cooling chamber 24 in which the stand tray 8 is maintained at a predetermined temperature for a certain period of time and moving the stand tray 8 by time management, so that automation and labor saving can be achieved. It can be easily achieved, and the processing capacity can be greatly improved by simultaneously performing heating and cooling in both chambers.
Further, in the coil heat treatment furnace of the present invention, the inside of the furnace is not opened to the atmosphere every time as in the bell type furnace, and the intrusion of outside air can be prevented by the vacuum purge chamber, so that the dew point of the atmosphere in the furnace is kept low. It is possible to prevent the atmospheric dew point in the furnace from becoming high. For this reason, the material to be treated can be made very clean in terms of surface properties by heat treatment in the coil heat treatment furnace of the present invention.
[0014]
【The invention's effect】
As described above, according to the present invention, there are beneficial effects such as facilitating automation and labor saving of the coil heat treatment furnace, improving the processing capability, and achieving uniform heating and energy saving.
[Brief description of the drawings]
FIG. 1 is a horizontal sectional plan view of a coil heat treatment furnace according to the present invention.
2 is a longitudinal sectional front view of the coil heat treatment furnace of FIG. 1;
3 is a cross-sectional view taken along line AA in FIG.
4 is a cross-sectional view taken along line BB in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Purge chamber 2 Front opening 3 Front door 8 Stand tray 10 Column 11 Coiled object 12 Horizontal support rods 13, 14 Opening 15, 16 Opening / closing door 20 Heating chamber 21 Entrance / exit 24 Cooling chamber 25 Entrance / exit 28 Circulating fan 30 Radiant tube burner 31 Circulating fan 33 Cooler 35 Atmospheric gas generator 39 Vacuum pump 41 Conveying roller

Claims (3)

コイル状物の中心に水平支持棒を貫挿して該コイル状物を吊下支持し得るスタンドトレイと、正面扉より前記スタンドトレイを出入りし得るように形成されたパージ室と、該パージ室の一端部に出入口部が対面し該パージ室内より前記スタンドトレイが出入りし得るように形成された加熱室と、該パージ室の他端部に出入口部が対面し該パージ室より前記スタンドトレイが出入りし得るように形成された冷却室とからなることを特徴としたコイル熱処理炉。A stand tray that can suspend and support the coil-like object by inserting a horizontal support rod in the center of the coil-like object, a purge chamber that is formed so that the stand tray can be moved in and out from the front door, A heating chamber formed so that the entrance / exit portion faces one end and the stand tray can enter / exit from the purge chamber, and the entrance / exit portion faces the other end of the purge chamber, and the stand tray enters / exits from the purge chamber A coil heat treatment furnace comprising a cooling chamber formed so as to be able to perform. パージ室が耐圧性に形成され真空ポンプにより該パーシ室内の空気を排出し得るようにした請求項1に記載のコイル熱処理炉。The coil heat treatment furnace according to claim 1, wherein the purge chamber is formed with pressure resistance so that air in the perist chamber can be discharged by a vacuum pump. コイル状物が支持されたスタンドトレイを正面扉からパージ室内に挿入し該パージ室内を雰囲気ガスに置換してから該スタンドトレイを加熱室に移動してコイル状物を所定の熱処理温度に加熱し、該加熱室内のスタンドトレイをパージ室を経て冷却室に移動させた後、該パージ室内に正面扉から新らたなコイル状物が支持されたスタンドトレイを挿入して該パージ室内を雰囲気ガスに置換し該スタンドトレイを加熱室に移動することにより該加熱室内のコイル状物を所定の熱処理温度に加熱しその間に前記冷却室内のコイル状物を所定温度に冷却し、該冷却室内のスタンドトレイをパージ室を経て正面扉から抽出した後、加熱室内のスタンドトレイをパージ室を経て冷却室に移動させ、以下同様にコイル状物が支持されたスタンドトレイをパージ室→加熱室→パージ室→冷却室→パージ室の順に移動させ加熱と冷却とが同時進行されるようにしたことを特徴とする請求項1または2に記載のコイル熱処理炉の運転方法。The stand tray on which the coiled material is supported is inserted into the purge chamber from the front door, the purge chamber is replaced with atmospheric gas, and then the stand tray is moved to the heating chamber to heat the coiled material to a predetermined heat treatment temperature. After the stand tray in the heating chamber is moved to the cooling chamber through the purge chamber, a stand tray on which a new coil-like object is supported from the front door is inserted into the purge chamber, and the purge chamber is filled with atmospheric gas. The coiled object in the heating chamber is heated to a predetermined heat treatment temperature by moving the stand tray to the heating chamber, while the coiled object in the cooling chamber is cooled to the predetermined temperature, and the stand in the cooling chamber is cooled. After the tray is extracted from the front door through the purge chamber, the stand tray in the heating chamber is moved to the cooling chamber through the purge chamber, and the stand tray on which the coiled material is supported in the same manner. Di chamber → heating chamber → purge chamber → cooling chamber → method of operating the coil heat treatment furnace according to claim 1 or 2 and the heating is moved in the order of the purge chamber cooling and is characterized in that it has to be advanced simultaneously.
JP19553396A 1996-07-05 1996-07-05 Coil heat treatment furnace and operating method thereof Expired - Fee Related JP3915143B2 (en)

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JP19553396A JP3915143B2 (en) 1996-07-05 1996-07-05 Coil heat treatment furnace and operating method thereof

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Application Number Priority Date Filing Date Title
JP19553396A JP3915143B2 (en) 1996-07-05 1996-07-05 Coil heat treatment furnace and operating method thereof

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JPH1017944A JPH1017944A (en) 1998-01-20
JP3915143B2 true JP3915143B2 (en) 2007-05-16

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Publication number Priority date Publication date Assignee Title
JP2009185349A (en) * 2008-02-07 2009-08-20 Ihi Corp Multichamber heat treatment furnace
CN116065003A (en) * 2022-12-22 2023-05-05 南通德元机械制造有限公司 Annealing equipment for bearing pedestal casting

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