JPH031475Y2 - - Google Patents
Info
- Publication number
- JPH031475Y2 JPH031475Y2 JP1986078318U JP7831886U JPH031475Y2 JP H031475 Y2 JPH031475 Y2 JP H031475Y2 JP 1986078318 U JP1986078318 U JP 1986078318U JP 7831886 U JP7831886 U JP 7831886U JP H031475 Y2 JPH031475 Y2 JP H031475Y2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- chamber
- convector
- heat treatment
- treatment furnace
- 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 31
- 238000001816 cooling Methods 0.000 claims description 16
- 238000000137 annealing Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 7
- 238000010583 slow cooling Methods 0.000 description 5
- 238000000605 extraction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Furnace Details (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、台車型、ローラハース型あるいは回
転炉床型等の間欠走行式コイル熱処理炉に関する
ものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an intermittent traveling type coil heat treatment furnace such as a truck type, roller hearth type, or rotary hearth type.
（従来の技術とその問題点）
従来、間欠走行式コイル熱処理炉において、加
熱帯のラジアントチユーブからの排ガスあるいは
コイルの冷却帯の高温雰囲気ガスなどの高温ガス
を予熱室の予熱源として利用し、省エネルギーを
図る試みが種々提案されている。(Prior art and its problems) Conventionally, in an intermittent running coil heat treatment furnace, high-temperature gas such as exhaust gas from a radiant tube in a heating zone or high-temperature atmospheric gas in a cooling zone of a coil is used as a preheating source in a preheating chamber. Various attempts to save energy have been proposed.
たとえば、第７図に示すように、予熱室Ａ，加
熱・均熱室Ｂ，徐冷室Ｃ，冷却室Ｄからなる熱処
理炉T′において、予熱室Ａおよび徐冷室Ｃの天
井部に対流フアンF1を配設するとともに、循環
フアンF2によつて徐冷室Ｃの高温雰囲気を予熱
室Ａの予熱源として利用し、その後、温度の低下
した雰囲気を徐冷室Ｃへ循環させ、冷却用雰囲気
とするものがある。 For example, as shown in Fig. 7, in a heat treatment furnace T' consisting of a preheating chamber A, a heating/soaking chamber B, an annealing chamber C, and a cooling chamber D, convection flows in the ceilings of the preheating chamber A and an annealing chamber C. A fan F1 is provided, and a circulation fan F2 uses the high temperature atmosphere of the slow cooling chamber C as a preheating source for the preheating chamber A, and then circulates the lowered temperature atmosphere to the slow cooling chamber C. Some use it as a cooling atmosphere.
しかしながら、前記の方法は、炉内雰囲気の循
環による対流加熱であるため、多数の炉内対流フ
アンF1を必要とするばかりか、容量大きい循環
フアンF2を必要とする。また、予熱あるいは冷
却時の熱伝達は主としてコイル表面に対する対流
伝熱であるため、予熱，あるいは冷却効率が悪い
という問題点を有していた。 However, since the above method uses convection heating by circulating the atmosphere in the furnace, it not only requires a large number of in-furnace convection fans F1 , but also a large-capacity circulation fan F2 . Furthermore, since heat transfer during preheating or cooling is mainly convective heat transfer to the coil surface, there is a problem that preheating or cooling efficiency is poor.
本考案は、前記従来の問題点を解決すべくなさ
れたもので、コイルの端面からの熱伝達は、外
周，内周からのものより、約10倍良好であるとい
う点に着目し、効果的な予熱，冷却が達成できる
間欠走行式コイル熱処理炉を提供することを目的
とする。 The present invention was developed to solve the above-mentioned conventional problems, and focuses on the fact that heat transfer from the end face of the coil is about 10 times better than from the outer and inner peripheries. The purpose of the present invention is to provide an intermittent traveling type coil heat treatment furnace that can achieve accurate preheating and cooling.
（問題点を解決すべき手段）
本考案は、前記問題点を解決するために、予熱
室，加熱室および冷却室を有する間欠走行式コイ
ル熱処理炉において、前記予熱室の停止位置に、
中央開口部にダクトを有するコンベクタを設け、
このコンベクタにコイル端面と接触・離間させる
駆動装置を取り付けるとともに、前記ダクトを高
温ガス供給ダクトに連通し、コイルの移送停止時
に、前記コンベクタをコイル端面に接触させて、
コイル端面に前記高温ガスによる対流伝熱を付与
するようにしたものである。(Means to Solve the Problems) In order to solve the above problems, the present invention provides an intermittent running coil heat treatment furnace having a preheating chamber, a heating chamber, and a cooling chamber, at a stop position of the preheating chamber.
A convector with a duct is provided in the central opening,
A drive device is attached to the convector to bring it into contact with and separate from the end face of the coil, and the duct is connected to a high temperature gas supply duct, and when the transfer of the coil is stopped, the convector is brought into contact with the end face of the coil,
The coil end face is provided with convection heat transfer by the high temperature gas.
（実施例）
つぎに、本考案を実施例である図面にしたがつ
て説明する。(Example) Next, the present invention will be explained with reference to drawings which are examples.
第１図から第４図は、本考案を適用した台車型
間欠走行式コイル熱処理炉Ｔの第１実施例を示
し、予熱室１、装入ベスチブル２、ラジアントチ
ユーブ式加熱室３、冷却室４および抽出ベスチブ
ル５とから構成したものである。なお、６は装入
扉、７は中間扉、８は抽出扉で、コイルＷは、そ
の端面が上下に位置するように、下記するコンベ
クタ本体１１と同様構成の下部コンベクタ本体１
１Ａ上に載置されて、台車２８により間欠的に炉
内を移動し、その間に、コイルが、予熱，加熱，
冷却されるようになつている。 1 to 4 show a first embodiment of a trolley type intermittent running coil heat treatment furnace T to which the present invention is applied, including a preheating chamber 1, a charging bestible 2, a radiant tube heating chamber 3, and a cooling chamber 4. and extracted bestible 5. In addition, 6 is a charging door, 7 is an intermediate door, 8 is an extraction door, and the lower convector main body 1 has the same structure as the convector main body 11 described below so that the end faces of the coil W are located above and below.
1A and is moved intermittently in the furnace by the trolley 28, during which the coil performs preheating, heating,
It's starting to cool down.
そして、前記予熱室１のコイルＷが、停止する
位置における天井部には、コンベクタ１０が設置
されている。このコンベクタ１０は、第２図およ
び第４図に示すように、多数のインボリユート曲
線状のリブ１２により流路１３が形成されたコン
ベクタ本体１１とコンベクタ本体１１の中央開口
１４に設けたダクト１５とからなり、このダクト
１５にはコイル端面と接触・離間させる駆動装置
であるエアシリンダ１６のピストンロツド１７を
連結している。なお、前記リブ１２は、円弧状、
放射状などであつてもよい。 A convector 10 is installed on the ceiling at the position where the coil W of the preheating chamber 1 stops. As shown in FIGS. 2 and 4, this convector 10 includes a convector body 11 in which a flow path 13 is formed by a large number of involute curved ribs 12, and a duct 15 provided in a central opening 14 of the convector body 11. The duct 15 is connected to a piston rod 17 of an air cylinder 16, which is a driving device for bringing it into contact with and separating from the end face of the coil. Note that the rib 12 has an arc shape,
It may also be radial.
そして、前記ダクト１５は、予熱室１に設けた
隔板で区画されたヘツダ１８ａの分岐ダクト１８
ｂに摺動自在に装着されるとともに、前記ヘツダ
１８ａに高温ガス供給ダクト１８を連通してい
る。 The duct 15 is a branch duct 18 of a header 18a partitioned by a partition plate provided in the preheating chamber 1.
b, and communicates with the high temperature gas supply duct 18 to the header 18a.
一方、加熱室３には加熱手段である複数のラジ
アントチューブ２０が配設され、その高温の排ガ
スは第３図の系統図に示すように、前記ヘツダ１
８ａ内に供給されるようになつている。 On the other hand, a plurality of radiant tubes 20 serving as heating means are arranged in the heating chamber 3, and the high temperature exhaust gas is sent to the header 1 as shown in the system diagram of FIG.
8a.
すなわち、予熱室１内の雰囲気ガスは、循環フ
アン２１により循環ダクト２２からヘツダ１８ａ
に供給される一方、前記ラジアントチユーブ２０
から排ガスは、前記循環フアン２１により吸引，
昇圧され燃焼用空気をレキユペレータ２３で熱交
換して予熱したのち、前記ヘツダ１８ａに供給去
れる。また、排ガスの高温ガス供給ダクト１８か
らヘツダ１８ａへの供給量は、前記ヘツダ１８ａ
への供給排ガスの温度を温度検出器２４で検出
し、その温度信号にもとずく温度調節計２５によ
る流量制御弁２６ａ，２６ｂを制御して、ガス温
度を所定温度となるようにしている。 That is, the atmospheric gas in the preheating chamber 1 is transferred from the circulation duct 22 to the header 18a by the circulation fan 21.
while the radiant tube 20
The exhaust gas is sucked by the circulation fan 21,
After the pressurized combustion air is preheated by heat exchange in the recuperator 23, it is supplied to the header 18a. Further, the amount of exhaust gas supplied from the high temperature gas supply duct 18 to the header 18a is
The temperature of the exhaust gas supplied to the exhaust gas is detected by a temperature detector 24, and the flow rate control valves 26a and 26b are controlled by a temperature controller 25 based on the temperature signal, so that the gas temperature becomes a predetermined temperature.
なお、冷却室４の天井部には循環フアン２７が
設けてある。 Note that a circulation fan 27 is provided on the ceiling of the cooling chamber 4.
つぎに、前記構成からなる間欠走行式コイル熱
処理炉Ｔの操業方法を説明する。 Next, a method of operating the intermittent running type coil heat treatment furnace T having the above configuration will be explained.
まず、コイルＷは、台車２８の下部コンベクタ
本体１１Ａ上に載置され、間欠的に１ピツチずつ
予熱室１に装入される。そして、台車２８が停止
すると、前記各エアシリンダ１６が作動してコン
ベクタ本体１１をコイルＷの上端面に接触させ、
循環フアン２１によつて吸引，昇圧された予熱室
１の雰囲気ガスおよびラジアントチユーブ２０か
らの排ガスはコンベクタ本体１１のインボリユー
ト流路１３を通過し、コイルＷの上端面を加熱し
ながら吐出口１３ａから予熱室１内に吐出される
とともに、コイルＷの中心部を通過し、下部コン
ベクタ本体１１Ａに至り、前記同様コイルＷの下
端面を加熱することになる。 First, the coil W is placed on the lower convector main body 11A of the truck 28, and is intermittently inserted into the preheating chamber 1 one pitch at a time. Then, when the truck 28 stops, each of the air cylinders 16 operates to bring the convector main body 11 into contact with the upper end surface of the coil W.
The atmospheric gas in the preheating chamber 1 and the exhaust gas from the radiant tube 20, which are sucked and pressurized by the circulation fan 21, pass through the involute flow path 13 of the convector body 11, and are discharged from the discharge port 13a while heating the upper end surface of the coil W. It is discharged into the preheating chamber 1, passes through the center of the coil W, reaches the lower convector main body 11A, and heats the lower end surface of the coil W as described above.
そして、台車２８が停止してから所定時間経過
すると、エアシリンダ１６が作動して各コンベク
タ１０は、コイルＷの上端面から離間して、その
後、台車２８が１ピツチ間欠移動し、コンベクタ
１０は前記工程を繰り返す一方、コイルＷは、装
入扉６，中間扉７，抽出扉８の開閉により、装入
ベスチブル２、加熱室３、冷却室４、抽出ベスチ
ブル５を経て、炉外に抽出される。 Then, when a predetermined period of time has elapsed since the cart 28 stopped, the air cylinder 16 is activated and each convector 10 is separated from the upper end surface of the coil W. After that, the cart 28 moves one pitch intermittently, and the convector 10 While repeating the above steps, the coil W is extracted out of the furnace through the charging bestible 2, heating chamber 3, cooling chamber 4, and extraction bestible 5 by opening and closing the charging door 6, intermediate door 7, and extraction door 8. Ru.
前記実施例においては、コンベクタ１０に加熱
室３のラジアントチユーブ２０からの高温排ガス
を供給する場合について述べたが、高温排ガスは
冷却室４あるいは加熱室３と冷却室４との間に設
けた徐冷室の高温雰囲気としてもよい。 In the embodiment described above, a case was described in which high-temperature exhaust gas is supplied from the radiant tube 20 of the heating chamber 3 to the convector 10, but the high-temperature exhaust gas is supplied to the cooling chamber 4 or the radiant tube provided between the heating chamber 3 and the cooling chamber 4. It may also be a high temperature atmosphere in a cold room.
すなわち、第５図に示すものは、本考案の第２
実施例を示し、第１予熱室１Ａ、装入ベスチブル
２、第２予熱室１Ｂ、加熱室３、徐冷室４Ａ、冷
却室４、抽出ベスチブル５とから構成し、第６図
に示す系統図のように、前記第１予熱室１Ａに
は、加熱室３のラジアントチユーブ２０からの排
ガスを供給することによりコイルＷを予熱し、第
２予熱室１Ｂと徐冷室４Ａの天井部に前記構成の
コンベクタ１０を設け、循環フアン２１により徐
冷室４Ａの雰囲気を吸引，昇圧して、予熱帯１Ｂ
のヘツダ１８ａに供給するもので、徐冷室４Ａの
雰囲気は、下部コンベクタ本体１１Ａおよび上部
コンベクタ本体１１を通過し、その間にコイルＷ
の端面を冷却し、高温となつた雰囲気を前記第２
予熱室１Ｂに設けたコンベクタ１０に供給し、前
記第１実施例と同様、コイルＷの上，下端面を予
熱するものである。その他は第１実施例と同様で
あるから詳しい説明を省略する。 That is, what is shown in FIG. 5 is the second embodiment of the present invention.
An example is shown in the system diagram shown in FIG. 6, which is composed of a first preheating chamber 1A, a charging vestible 2, a second preheating chamber 1B, a heating chamber 3, an annealing chamber 4A, a cooling chamber 4, and an extraction bestible 5. As shown in FIG. A convector 10 is provided, and the atmosphere in the slow cooling chamber 4A is suctioned and pressurized by the circulation fan 21, and the atmosphere in the slow cooling chamber 4A is increased.
The atmosphere in the slow cooling chamber 4A passes through the lower convector body 11A and the upper convector body 11, and the coil W
and cooled the end face of the second
It is supplied to the convector 10 provided in the preheating chamber 1B, and preheats the upper and lower end surfaces of the coil W, as in the first embodiment. The rest is the same as the first embodiment, so detailed explanation will be omitted.
なお、前記各実施例では、コイルをアツプエン
ド状に装入した場合を説明したが、ダウンエンド
状（横置き）に装入する場合にも適用でき、この
場合には、コンベクタを炉の両側壁部に配置する
ものである。 In each of the above embodiments, the case where the coils were charged in an up-end configuration was explained, but it can also be applied to the case where the coils are loaded in a down-end configuration (horizontal placement). It is placed in the section.
（考案の効果）
以上の説明で明らかなように、本考案によれ
ば、予熱室に、コイル端面と接触・離間するコン
ベクタを設け、コイル移送停止時に、コンベクタ
をコイル端面に接触させるようにしたため、コイ
ルの予熱時にコイル両端面をコンベクタからの高
温ガスにより対流伝熱を付与して加熱することに
なり、加熱効率がよく、予熱時間の短縮が図れ
る。(Effects of the invention) As is clear from the above explanation, according to the invention, a convector that comes into contact with and separates from the end face of the coil is provided in the preheating chamber, and the convector is brought into contact with the end face of the coil when the coil transfer is stopped. During preheating of the coil, both end faces of the coil are heated by applying convection heat transfer with high temperature gas from the convector, which improves heating efficiency and shortens preheating time.
しかも、加熱用高温ガスは、断面積の小さいコ
ンベクタの通路から噴出する。したがつて、従来
の約1/10のガス量にて、同程度のコイル端面での
流速が得られ、使用する循環フアンも小型のもの
でよく、それだけ設備が安価になるという効果を
奏する。 Moreover, the high-temperature gas for heating is ejected from the passage of the convector, which has a small cross-sectional area. Therefore, the same flow velocity at the end face of the coil can be obtained with about 1/10 the amount of gas compared to the conventional method, and the circulation fan used can also be small, which has the effect of reducing the cost of the equipment.
第１図は本考案にかかる間欠走行式コイル熱処理
炉の第１実施例を示す概略図、第２図は第１図の
−線拡大断面図、第３図は第１図の高温ガス
系統図、第４図はコンベクタ本体の正面図、第５
図は本考案の第２実施例を示す概略図、第６図は
高温ガス系統図で、第７図は従来の間欠走行式コ
イル熱処理炉の概略図である。
１…予熱室、１Ａ…第１予熱室、１Ｂ…第２予
熱室、３…加熱室、４…冷却室、４Ａ…徐冷室、
１０…コンベクタ、１１…コンベクタ本体、１１
Ａ…下部コンベクタ本体、１６…エアシリンダ、
１８…メインダクト、２０…ラジアントチユー
ブ、２１…循環フアン。
Fig. 1 is a schematic diagram showing a first embodiment of the intermittent traveling type coil heat treatment furnace according to the present invention, Fig. 2 is an enlarged sectional view taken along the - line in Fig. 1, and Fig. 3 is a high temperature gas system diagram of Fig. 1. , Figure 4 is a front view of the main body of the convector, and Figure 5 is a front view of the main body of the convector.
The figure is a schematic diagram showing a second embodiment of the present invention, FIG. 6 is a high-temperature gas system diagram, and FIG. 7 is a schematic diagram of a conventional intermittent running type coil heat treatment furnace. 1... Preheating chamber, 1A... First preheating chamber, 1B... Second preheating chamber, 3... Heating chamber, 4... Cooling chamber, 4A... Annealing chamber,
10...convector, 11...convector body, 11
A...lower convector main body, 16...air cylinder,
18...Main duct, 20...Radiant tube, 21...Circulation fan.
Claims (1)
行式コイル熱処理炉において、前記予熱室のコ
イル停止位置に、中央開口部にダクトを有する
コンベクタを設け、このコンベクタにコイル端
面と接触・離間させる駆動装置を取り付けると
ともに、前記ダクトを高温ガス供給ダクトに連
通し、コイルの移送停止時に、前記コンベクタ
をコイル端面に接触させて、コイル端面に対流
伝熱を付与することを特徴とする間欠走行式コ
イル熱処理炉。 (2) 前記高温ガスが、前記加熱室に設けたラジア
ントチユーブの排ガスであることを特徴とする
前記実用新案登録請求の範囲第１項に記載の間
欠走行式コイル熱処理炉。 (3) 前記高温ガスが、冷却室または徐冷室の雰囲
気ガスであることを特徴とする前記実用新案登
録請求の範囲第１項に記載の間欠走行式コイル
熱処理炉。[Claims for Utility Model Registration] (1) In an intermittent running coil heat treatment furnace having a preheating chamber, a heating chamber, and a cooling chamber, a convector having a duct in the central opening is provided at the coil stop position of the preheating chamber; A drive device is attached to the convector to bring it into contact with and separate from the end face of the coil, and the duct is communicated with a high temperature gas supply duct, and when the transfer of the coil is stopped, the convector is brought into contact with the end face of the coil to impart convective heat transfer to the end face of the coil. An intermittent running coil heat treatment furnace characterized by: (2) The intermittent running coil heat treatment furnace according to claim 1, wherein the high temperature gas is exhaust gas from a radiant tube provided in the heating chamber. (3) The intermittent traveling type coil heat treatment furnace according to claim 1, wherein the high temperature gas is atmospheric gas in a cooling chamber or an annealing chamber.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986078318U JPH031475Y2 (en) | 1986-05-23 | 1986-05-23 | |
| KR870005088A KR870011258A (en) | 1986-05-23 | 1987-05-22 | Intermittent heat treatment furnace |
| KR2019900015765U KR930004354Y1 (en) | 1986-05-23 | 1990-10-17 | Intermittent running heat treatment circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986078318U JPH031475Y2 (en) | 1986-05-23 | 1986-05-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62191859U JPS62191859U (en) | 1987-12-05 |
| JPH031475Y2 true JPH031475Y2 (en) | 1991-01-17 |
Family
ID=30927145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986078318U Expired JPH031475Y2 (en) | 1986-05-23 | 1986-05-23 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH031475Y2 (en) |
| KR (2) | KR870011258A (en) |
-
1986
- 1986-05-23 JP JP1986078318U patent/JPH031475Y2/ja not_active Expired
-
1987
- 1987-05-22 KR KR870005088A patent/KR870011258A/en not_active Withdrawn
-
1990
- 1990-10-17 KR KR2019900015765U patent/KR930004354Y1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR930004354Y1 (en) | 1993-07-12 |
| KR870011258A (en) | 1987-12-22 |
| JPS62191859U (en) | 1987-12-05 |
| KR920008675U (en) | 1992-05-20 |
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