JPS62139829A - Box type heat treatment furnace - Google Patents
Box type heat treatment furnaceInfo
- Publication number
- JPS62139829A JPS62139829A JP28182685A JP28182685A JPS62139829A JP S62139829 A JPS62139829 A JP S62139829A JP 28182685 A JP28182685 A JP 28182685A JP 28182685 A JP28182685 A JP 28182685A JP S62139829 A JPS62139829 A JP S62139829A
- Authority
- JP
- Japan
- Prior art keywords
- duct
- treated
- furnace
- heated
- circulation
- 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 Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、箱型熱処理炉、例えば冷間圧延鋼板コイル（
以下冷延コイルという）を還元性雰囲気内で焼鈍するバ
ッチ式焼鈍炉に関し、特にその加熱速度、冷却速度のコ
イル全体における均一性を改善できるようにした熱処理
炉に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to a box-type heat treatment furnace, such as a cold-rolled steel coil (
The present invention relates to a batch-type annealing furnace for annealing a cold-rolled coil (hereinafter referred to as a cold-rolled coil) in a reducing atmosphere, and particularly to a heat treatment furnace that can improve the uniformity of the heating rate and cooling rate throughout the coil.
３従来の技術〕
従来、冷延コイルのバッチ式焼鈍処理においては、箱型
の炉本体内に冷延コイルを装入し、これを所定の雰囲気
ガス状態で所定温度に加熱し、その後所定温度に冷却す
るようにしている。3. Prior Art] Conventionally, in batch-type annealing treatment of cold-rolled coils, the cold-rolled coils are charged into a box-shaped furnace body, heated to a predetermined temperature in a predetermined atmospheric gas state, and then heated to a predetermined temperature. I'm trying to cool it down.
このような箱型焼鈍炉として、従来、第４図に示すもの
があった０図において、ｌは箱状の炉本体であり、これ
は型鋼で外部が補強された鋼板により密閉状の炉殻２を
形成し、該炉殻２の天井２ａ、側壁２ｂ及び後部炉床２
Ｃの内側にセラミックファイバー等の耐火断熱材からな
る内張リライニング３ａ、３ｂ、３ｃを貼設し、さらに
炉床２ｄ上には耐火断熱煉瓦からなる炉床壁３ｄを形成
して構成されている。また、この炉殻２の前部、即ら第
４図左側には装入口２ｅが形成され、該装入口２Ｃの外
側には開閉扉４が昇降自在に配設されている。なお、１
７は炉内に雰囲気ガスを供給するための雰囲気ガス供給
装置である。Conventionally, such a box-shaped annealing furnace was shown in Fig. 4. In Fig. 0, l is a box-shaped furnace body, which is a closed furnace shell made of a steel plate reinforced on the outside with shaped steel. 2, and the ceiling 2a, side wall 2b and rear hearth 2 of the furnace shell 2.
Relinings 3a, 3b, and 3c made of a fireproof heat insulating material such as ceramic fiber are pasted on the inside of C, and a hearth wall 3d made of fireproof heat insulating bricks is further formed on the hearth 2d. There is. Further, a charging port 2e is formed at the front of the furnace shell 2, that is, on the left side in FIG. 4, and an opening/closing door 4 is disposed on the outside of the charging port 2C so as to be movable up and down. In addition, 1
Reference numeral 7 denotes an atmospheric gas supply device for supplying atmospheric gas into the furnace.
Ｆ記炉床２ｄには被加熱材である冷延コイルＷの載置台
（図示せず）が立設され、この各Ｗｌｉ置合間合間吸込
みダクト５のプレナムチャンバ５ａが配設され、該チャ
ンバ５ａは第４図左右に延び、上面には多数の吸込み口
が形成され、これの基部が接続されたヘッダ５ｂには、
炉内にて上方に延びる循環ダクト６が接続されている。A mounting stand (not shown) for a cold-rolled coil W, which is a material to be heated, is set up on the F hearth 2d, and a plenum chamber 5a of the suction duct 5 between each Wli placement is arranged, and the chamber 5a extends from left to right in FIG.
A circulation duct 6 extending upward within the furnace is connected.
この循環ダクト６の上端部炉内側には吹出し口６ａが形
成され、この吹出し口６ａには案内羽根６ｂが取り付け
らられている。An air outlet 6a is formed inside the furnace at the upper end of the circulation duct 6, and a guide vane 6b is attached to the air outlet 6a.
また、上記循環ダクト６の上記ヘッダ５ｂとの接続部付
近には、循環ファン７のインペラ７ａが挿入され、さら
にこのｗｉ環ダクト６のインペラ７ａ下流側にはガスク
ーラ８の熱交換部であるニレメン）８ａが配設されてお
り、これは駆動装置８ｂにより上記循環ダクト６の内、
外にて進退自在になっている。Further, an impeller 7a of a circulation fan 7 is inserted in the vicinity of the connection portion of the circulation duct 6 with the header 5b, and further downstream of the impeller 7a of the wi-ring duct 6, there is a Niremen membrane that is the heat exchange part of the gas cooler 8. ) 8a is provided, which is driven by a drive device 8b to drive the circulation duct 6,
It is possible to move in and out freely outside.
また上記炉殻２の上部には、輻射熱源である多数のラジ
アントチューブ９が挿入されている。このラジアントチ
ューブ９は耐熱鋳鋼型のパイプをＩＪ字状に成形してな
り、炉内からみて４５＠の傾斜状態に配設され、これの
炉殻外方に突出した一方の端部に燃焼バーナが取り付け
られ、他方の端部は排気管に連通されており、また該チ
ューブ９の炉内部分は天井２ａに吊棒１０により吊設さ
れている。Further, a large number of radiant tubes 9, which are radiant heat sources, are inserted into the upper part of the furnace shell 2. The radiant tube 9 is made of a heat-resistant cast steel pipe formed into an IJ shape, and is arranged at an angle of 45° when viewed from inside the furnace, with a combustion burner attached to one end protruding outside the furnace shell. The other end of the tube 9 is connected to an exhaust pipe, and the inner part of the tube 9 is suspended from the ceiling 2a by a hanging rod 10.
上記従来の冷延コイル焼鈍炉では、加熱時には、ガスク
ーラ８のエレメント８ａを循環ダクト６の外方に後退さ
せた状態で、燃焼バーナによりラジアントチューブ９を
赤熱するとともに、循環ファン７により炉内雰囲気ガス
を吸込みダクト５のプレナムチャンバ５ａに吸い込み、
循環ダクト６の上部吹出し口６ａから吹き出す、すると
これにより第４図に矢印へで示すように、雰囲気ガスが
ラジアントチューブ９の間を通って冷延コイルＷのと而
から下方に循環し、この際の熱風及びラジアントチュー
ブ９からの輻射熱により冷延コイルＷシま加熱される。In the conventional cold-rolled coil annealing furnace described above, during heating, the element 8a of the gas cooler 8 is retracted to the outside of the circulation duct 6, and the radiant tube 9 is heated to red heat by the combustion burner, and the atmosphere inside the furnace is heated by the circulation fan 7. The gas is sucked into the plenum chamber 5a of the suction duct 5,
The atmospheric gas is blown out from the upper outlet 6a of the circulation duct 6, and as a result, the atmospheric gas passes between the radiant tubes 9 and circulates downward from the cold-rolled coil W, as shown by the arrow in FIG. The cold-rolled coil W is heated by the hot air and radiant heat from the radiant tube 9.
また、冷却時には、ガスクーラ８のエレメント８ａを循
環ダクト６内に進入させ、これにより雰囲気ガスを冷却
し、この冷却された雰囲気ガスを加熱時と同様に冷延コ
イルＷの上方から下方に循環させており、これにより冷
延コイルＷは冷却される。In addition, during cooling, the element 8a of the gas cooler 8 enters the circulation duct 6 to cool the atmospheric gas, and the cooled atmospheric gas is circulated from above to below the cold-rolled coil W in the same manner as during heating. As a result, the cold rolled coil W is cooled.
３発明が解決しようとする問題点〕
−ヒ記従来装置では、加熱時には、雰囲気ガスを冷延コ
イルＷの上方から下方に循環させているから、この雰囲
気ガスは下方にいくほど温度が低下し、冷延コイルＷは
下部はど加熱されにくくなり、しかも冷延コイルＷの上
部にはラジアントチューブ９からの輻射熱も作用するか
ら、冷延コイルＷの上部と下部とでは昇温速度が大きく
異なる。3. Problems to be Solved by the Invention] - H. In the conventional device, during heating, the atmospheric gas is circulated from above to below the cold-rolled coil W, so the temperature of this atmospheric gas decreases as it goes downward. , the lower part of the cold-rolled coil W is less likely to be heated, and the radiant heat from the radiant tube 9 also acts on the upper part of the cold-rolled coil W, so the temperature increase rate is significantly different between the upper and lower parts of the cold-rolled coil W. .
また、冷却時においては、冷却された雰囲気ガスを加熱
時と同様に冷延コイルＷの上方から下方に循環させてい
るから、この雰囲気ガスは下方はど温度が上昇し、冷延
コイルＷは下方はど冷却されにくくなり、しかも炉床壁
３ｄの耐火煉瓦が大きな蓄熱量を有することから下部は
ど冷却速度が遅く、上部と下部とでは冷却速度も大きく
異なる。In addition, during cooling, the cooled atmospheric gas is circulated from above to below the cold-rolled coil W in the same way as during heating, so the temperature of this atmospheric gas increases in the downward direction, and the cold-rolled coil W The lower part is less likely to be cooled, and since the refractory bricks of the hearth wall 3d have a large amount of heat storage, the lower part has a slow cooling rate, and the cooling rate differs greatly between the upper and lower parts.
従ってこの従来装置では、冷延コイルＷの上部と下部と
では、ｒｌ、温速度及び降温速度に大きな差異が生じ、
焼鈍品質に悪影響を及ぼす問題があり、また全体の温度
が均一になるまでに長時間を要し、生産性が低いという
問題がある。Therefore, in this conventional device, there is a large difference in rl, temperature rate, and temperature decrease rate between the upper and lower parts of the cold-rolled coil W.
There is a problem that the annealing quality is adversely affected, and it takes a long time for the entire temperature to become uniform, resulting in low productivity.
本発明は、このような従来の問題点を解消するためにな
されたもので、被処理材の上部及び下部における加熱速
度、冷却速度を均一化して熱処理品質を向上できるとと
もに、生産性を向上できる箱型熱処理炉を提供すること
を目的としている。The present invention was made to solve these conventional problems, and it is possible to equalize the heating rate and cooling rate at the upper and lower parts of the material to be treated, thereby improving the quality of heat treatment and improving productivity. The purpose is to provide a box-type heat treatment furnace.
本発明は、箱型熱処理炉において、被処理材の上方に配
設されたラジアントチューブ等の輻射熱源の上方に、多
数の吸込み口を有する吸込みダクトを、被処理材の下方
に、多数の吹出し口を存する吹出しダクトをそれぞれ配
設し、この両ダクトをｉ７＋’ｉ Ｉロダクトにより連
通し、該循環ダクト内の上流（！’！ｌにυ６環ファン
を、下流側にガスクーラをそれぞれ配設したことを特徴
としている。In a box-type heat treatment furnace, the present invention provides a suction duct having a large number of suction ports above a radiant heat source such as a radiant tube disposed above the material to be processed, and a suction duct having a large number of air outlets below the material to be processed. A blowout duct with an opening was installed, and both ducts were connected by an i7+'i I rod duct, and a υ6 ring fan was installed at the upstream (!'!l) of the circulation duct, and a gas cooler was installed at the downstream side. It is characterized by
ご作用〕
本発明に係る箱型熱処理炉では、加熱時にはラジアント
チューブ近傍の高温の雰囲気ガスを上部の吸込みダクト
に吸い込み、循環ダクトを経て下部の吹出しダクトから
上方に噴出させるから、被処理材は、その上面がラジア
ントチューブの輻射熱でＩＪＩＩ熱されるとともに、下
面が高温の噴流により加熱され、その結果被処理材の上
、下部の昇温速度が均一化される。また冷却時には、蓄
熱量の大きい下側から冷却された雰囲気ガスを噴出する
から冷却時間が短縮され、その分生産性が向上する。Effect] In the box-type heat treatment furnace according to the present invention, during heating, high-temperature atmospheric gas near the radiant tube is sucked into the suction duct in the upper part, passes through the circulation duct, and is ejected upward from the blow-off duct in the lower part. The upper surface is heated by the radiant heat of the radiant tube, and the lower surface is heated by the high-temperature jet, so that the temperature increase rate of the upper and lower parts of the material to be treated is equalized. Further, during cooling, since the cooled atmospheric gas is ejected from the lower side where the amount of heat storage is large, the cooling time is shortened, and productivity is improved accordingly.
以下、本発明の実施例を図について説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例による冷延コイル焼鈍炉を示
す。図において、第４図と同一符号は同−又は相当部分
を示し、ラジアントチューブ９の１一方には多数の吸込
みダクト１１が該ラジアントチューブ９を横切るように
配設されており、この各吸込みダク１−１１には多数の
吸込みノズルｌ【ａが４５″の傾斜状態に取り付けられ
ており、この各吸込みノズルｌｌａの先端は隣接するラ
ジアントチューブ９間に位置している。そして上記各吸
込みダク）１１は上部ヘッダ１２に接続されている。FIG. 1 shows a cold rolled coil annealing furnace according to an embodiment of the present invention. In the figure, the same reference numerals as in FIG. 4 indicate the same or equivalent parts, and a large number of suction ducts 11 are disposed on one side of the radiant tube 9 so as to cross the radiant tube 9, and each suction duct 1-11, a number of suction nozzles l[a] are installed in an inclined state of 45'', and the tip of each suction nozzle lla is located between adjacent radiant tubes 9.And each of the above-mentioned suction ducts) 11 is connected to the upper header 12.
また、炉床壁３ｄに配設されたワーク載置台（図示せず
）間には多数の吹出しダクト１３が配設されている。こ
の各吹出しダクト１３は上記吸込みダク１−１１と平行
に、つまり炉前後方向に延び、その上面には吹出し口１
３ａが形成され、その基部は下部ヘッダ１４に接続され
ている。Further, a large number of blow-off ducts 13 are arranged between workpiece mounting tables (not shown) arranged on the hearth wall 3d. Each of the blow-off ducts 13 extends parallel to the suction duct 1-11, that is, in the front-rear direction of the furnace, and has a blow-off port 1 on its upper surface.
3a is formed, the base of which is connected to the lower header 14.
そして上記下部ヘッダ１４と上部ヘッダ１２とは循環ダ
クト１５により接続されている。この循環ダクト１５の
上部には循環ファン７のインペラ７ａが挿入配置され、
このインペラ７ａの下流側にはガスクーラ８のエレメン
ト８ａが駆動部８ｂにより進退自在に配設されている。The lower header 14 and the upper header 12 are connected by a circulation duct 15. The impeller 7a of the circulation fan 7 is inserted into the upper part of the circulation duct 15,
An element 8a of a gas cooler 8 is disposed downstream of the impeller 7a so as to be movable forward and backward by a drive section 8b.
また、上記循環ダクト１５のクーラ下流側には補助加熱
装置としてのラジアントチューブ１６が挿入され、この
ラジアントチューブ１６の炉外部分シごは燃焼バーナが
取り付けられている。この補助加熱装置は、循環される
雰囲気ガスの各ダクト及び炉床壁３ｄへの放熱社を補償
することにより、冷延コイルの上、下部温度を均一化す
るためのものである。Further, a radiant tube 16 as an auxiliary heating device is inserted into the circulation duct 15 on the downstream side of the cooler, and a combustion burner is attached to a portion of the radiant tube 16 outside the furnace. This auxiliary heating device is for equalizing the temperature of the upper and lower portions of the cold-rolled coil by compensating for the heat radiation of the circulating atmospheric gas to each duct and the hearth wall 3d.
次に本実施例の作用効果について説明する。Next, the effects of this embodiment will be explained.
本実施例装置における冷延コイルの焼鈍処理で；：１、
コイル全体を均一に所定温度、例えば６００℃に加熱し
、その後コイル全体をやはり均一に所定温度、例えば８
０℃に冷却する。この場合まず、装入扉４を開いて台車
により冷延コイルＷをワーク載置台上に截置し、装入扉
４を閉じて炉内を雰囲気ガスで置換すれば、これにより
焼鈍の準備が本冬了する。In the annealing treatment of the cold rolled coil in the apparatus of this embodiment: 1.
The entire coil is uniformly heated to a predetermined temperature, e.g. 600°C, and then the entire coil is also uniformly heated to a predetermined temperature, e.g.
Cool to 0°C. In this case, first open the charging door 4 and place the cold-rolled coil W on the workpiece mounting table using the cart, then close the charging door 4 and replace the inside of the furnace with atmospheric gas, thereby preparing for annealing. It will end this winter.
そして冷延コイルＷを加熱するには、ガスクーラ８のエ
レメント８ａを循環ダクト１５外に後退させた状態で、
燃焼バーナを点火する。すると、ラジアントチューブ９
が赤熱されて、該チューブ９からの輻射熱が冷延コイル
Ｗの上面から入熱され、また該輻射熱により加熱された
雰囲気ガスが循環ファン７により、吸込みダクト１１に
吸い込まれ、循環ダクト１５を通り、このダク１−１５
の下部において補助加熱装置のラジアントチューブ１６
により加熱された後吹出しダクト１３から上方に向けて
噴射される。これにより冷延コイルＷは、その上面がラ
ジアントチューブ９からの輻射熱により加熱されるとと
もに、その下面が高温の噴流ガスにより加熱されるから
、その上部及び下部における加熱速度が均一化され、加
熱品質が向上する。また冷延コイルＷの全体が同一温度
になるまでの時間、つまり必要加熱時間は上記加熱速度
が均一化された分だけ短縮され、その結果生産性が向上
する。To heat the cold-rolled coil W, the element 8a of the gas cooler 8 is retracted outside the circulation duct 15, and
Light the combustion burner. Then, radiant tube 9
is heated to red heat, and the radiant heat from the tube 9 is input from the upper surface of the cold-rolled coil W, and the atmospheric gas heated by the radiant heat is sucked into the suction duct 11 by the circulation fan 7 and passes through the circulation duct 15. , this duck 1-15
radiant tube 16 of the auxiliary heating device at the bottom of the
After being heated, it is injected upward from the blow-off duct 13. As a result, the upper surface of the cold-rolled coil W is heated by the radiant heat from the radiant tube 9, and the lower surface is heated by the high-temperature jet gas, so that the heating rate at the upper and lower portions is equalized, and the heating quality is improved. will improve. Further, the time required for the entire cold-rolled coil W to reach the same temperature, that is, the necessary heating time, is shortened by the equalization of the heating rate, and as a result, productivity is improved.
次に、冷延コイルＷを冷却する場合は、燃焼バーナ及び
補助バーナを消火し、ガスクーラ８のエレメント８ａを
ＭＱダクト１５内に挿入し、この状！虚で循環ファン７
により雰囲気ガスを吸込みダクト１１．ｖ！ｉ環ダクト
１５．吹出しダクト１３゜炉内の経路で循環させる。す
るとこれにより、ガスクーラ８により冷却された雰囲気
ガスが冷延コイルＷの下面から吹き出され、該コイルＷ
は下面から冷却されることとなる。Next, when cooling the cold-rolled coil W, extinguish the combustion burner and auxiliary burner, insert the element 8a of the gas cooler 8 into the MQ duct 15, and leave it in this state! Imaginary circulation fan 7
The atmospheric gas is sucked into the duct 11. v! i-ring duct 15. Circulate through the blow-off duct 13° inside the furnace. As a result, the atmospheric gas cooled by the gas cooler 8 is blown out from the lower surface of the cold-rolled coil W.
will be cooled from the bottom.
ここで、冷延コイルＷの下方には耐火断熱煉瓦からなり
、蓄熱量の大きい炉床壁３ｄがあり、そのため従来の雰
囲気ガスを上方から下方に循環して冷却する場合は、下
部の冷却速度が遅く、コイル全体を所定温度に冷却する
までに長時間を要した。これに対して本実施例では、上
述のように、冷延コイルＷの下方から雰囲気ガスを噴出
させたから、冷却速度が向上し、冷却時間を短縮でき、
この点からも生産性を向上できる。Here, there is a hearth wall 3d made of refractory insulating bricks and having a large amount of heat storage below the cold-rolled coil W. Therefore, when cooling by circulating atmospheric gas from above to below, the cooling rate of the lower part is was slow, and it took a long time to cool the entire coil to a predetermined temperature. On the other hand, in this embodiment, as mentioned above, since the atmospheric gas was ejected from below the cold-rolled coil W, the cooling rate was improved and the cooling time could be shortened.
Productivity can be improved from this point as well.
また、ガスクーラ８を循環ファン７より下流に設けたの
で、Ｖ＆環ファン７０回転による雰囲気ガスの温度上昇
分も吸収した後冷延コイルＷに吹き出すことができる。Further, since the gas cooler 8 is provided downstream of the circulation fan 7, the temperature increase in the atmospheric gas due to the rotation of the V&ring fan 70 can be absorbed and then blown out to the cold rolled coil W.
第２図は、本実施例の効果を説明するための加熱、冷却
特性を示し、図中、曲線Ｔ、Ｍ、Ｂはそれぞれ従来炉に
おける冷延コイルの上部、中央部。FIG. 2 shows heating and cooling characteristics for explaining the effects of this embodiment. In the figure, curves T, M, and B represent the upper and center portions of the cold-rolled coil in a conventional furnace, respectively.
下部の加熱、冷却特性を示し、曲線ｔ、 ｍ、 ｂは
それぞれ本実施例炉における冷延コイルの上部。The heating and cooling characteristics of the lower part are shown, and curves t, m, and b are the upper part of the cold-rolled coil in the furnace of this example, respectively.
中央部、下部の加熱、冷却特性を示す。またＴＲ。Shows the heating and cooling characteristics of the central and lower parts. TR again.
ＴＯはそれぞれラジアントチューブ温度１雰囲気ガス温
度である。TO is radiant tube temperature 1 atmospheric gas temperature, respectively.
加熱時には、第２図（ａ）から明らかなように、従来炉
では、上部の上昇速度（曲線Ｔ）に比べて中央部（曲線
Ｍ）及び下部（曲線Ｂ）の上昇速度が非常に遅く、つま
り加熱速度が不均一である。During heating, as is clear from FIG. 2(a), in the conventional furnace, the rising speed of the center (curve M) and lower part (curve B) is very slow compared to the rising speed of the upper part (curve T). In other words, the heating rate is non-uniform.
これに比べて、本実施例炉では、上部（曲線ｔ）及び下
部（曲Ｗｂ）の上昇速度が略同−であり、また中央部（
曲線ｍ）の上昇速度も大きく上昇しており、つまり加熱
速度が均一になっており、その結果、コイル全体が所定
温度に上昇するまでに要する必要加熱時間は、本実施例
炉では従来炉より５時間短縮されている。In contrast, in the furnace of this example, the rising speeds of the upper part (curve t) and lower part (curve Wb) are approximately the same, and the central part (curve Wb) is approximately the same.
The rate of rise in curve m) has also increased significantly, meaning that the heating rate has become uniform, and as a result, the required heating time for the entire coil to rise to a predetermined temperature is shorter in this example furnace than in the conventional furnace. It's been reduced by 5 hours.
また冷却時には、第２図（ｂ）から明らかなように、上
部、中央部、下部における冷却速度はいずれも本実施例
炉の方が従来炉より速く、その結果コイル全体が所定温
度に冷却されるまでに要する必要冷却時間は、本実施例
炉では従来炉よりも８時間短縮されている。Furthermore, during cooling, as is clear from Fig. 2(b), the cooling rate in the upper, middle, and lower parts of the furnace of this embodiment is faster than that of the conventional furnace, and as a result, the entire coil is cooled to a predetermined temperature. The required cooling time required for the furnace of this embodiment to reach the temperature is 8 hours shorter than that of the conventional furnace.
第３図は上記実施例の変形例を示す。図中第１図と同一
符号は同−又は相当部分を示し、本実施例では上部へラ
ダ１２は吸込みダクト１１の上方にこれを横切るように
配設されており、また循環ファン７及びガスクーラ８は
炉殻２の天井２ａ上に９ｉ置されている。FIG. 3 shows a modification of the above embodiment. In the figure, the same reference numerals as in FIG. is placed 9i on the ceiling 2a of the furnace shell 2.
本変形例では、上記実施例と同様の効果が得られ、さら
に炉のＲ置スペースを狭くできる効果がある。In this modified example, the same effects as those of the above-mentioned embodiment can be obtained, and there is also an effect that the space for placing the furnace R can be narrowed.
なお、上記各実施例では、循環ファンとして遠心ファン
を用いたが、これは軸流ファンでもよい。In each of the above embodiments, a centrifugal fan is used as the circulation fan, but an axial fan may be used instead.
また、上記各実施例では、冷延コイルの焼鈍炉について
説明したが、本発明は焼鈍炉に限定されるものではなく
、要は加熱及び冷却を行うバッチ式熱処理炉であればど
のようなものにも適用できる。Furthermore, in each of the above embodiments, an annealing furnace for cold-rolled coils has been described, but the present invention is not limited to annealing furnaces, but can be applied to any batch-type heat treatment furnace that performs heating and cooling. It can also be applied to
以上のように本発明に係る箱型熱処理炉によれば、被処
理材の上部に配設されたラジアントチューブ等の輻射熱
源の上方に吸込みダクトを、被処理材の下方に吹出しダ
クトを配設し、被処理材を上面からの輻射熱と下面から
の高温ガスの噴流により加熱し、かつ下面からの低温ガ
スの噴流により冷却するように構成したので、被処理材
の加熱速度、冷却速度を均一化でき、熱処理品質を向上
できる効果があるとともに、加熱、冷却速度が速くなっ
て生産性を向上できる効果がある。As described above, according to the box-type heat treatment furnace according to the present invention, the suction duct is arranged above the radiant heat source such as a radiant tube arranged above the material to be treated, and the blow-off duct is arranged below the material to be treated. The material to be treated is heated by radiant heat from the top surface and a jet of high-temperature gas from the bottom surface, and cooled by a jet of low-temperature gas from the bottom surface, so the heating and cooling rates of the material to be treated are uniform. This has the effect of improving heat treatment quality, as well as increasing productivity by increasing heating and cooling rates.
第１図は本発明の一実施例による冷延コイル焼鈍炉の断
面側面図、第２図はその効果を説明するためのもので、
第２図（ａ）は加熱特性図、第２図（ｂ）は冷却特性図
、第３図は上記実施例の変形例を示す断面側面図、第４
図は従来の冷延コイル焼鈍炉を示す断面側面図である。
図において、１は炉本体、７（ま循Ｉｆｆファン、８は
ガスクーラ、９はラジアントチューフ゛（Ｉ門’ｌ’を
熱源）、ｌｔは吸込みダクト、ｌｌａ＆よ吸込みノズル
（吸込み口）、１３は吹出し夕゛クト、１３ａＣよ吹出
し口、１５は循環ダクト、Ｗしよ冷延コイル（被処理材
）である。
１１Ｆ許出願人 株式会社？申戸製鋼所代理
人 弁理士 下車 努
第２図
時ＷＡ（Ｈｒ）□FIG. 1 is a cross-sectional side view of a cold-rolled coil annealing furnace according to an embodiment of the present invention, and FIG. 2 is for explaining the effect.
FIG. 2(a) is a heating characteristic diagram, FIG. 2(b) is a cooling characteristic diagram, FIG. 3 is a cross-sectional side view showing a modification of the above embodiment, and FIG.
The figure is a cross-sectional side view showing a conventional cold-rolled coil annealing furnace. In the figure, 1 is the furnace body, 7 (circulation Iff fan, 8 is the gas cooler, 9 is the radiant tube (I gate 'l' is the heat source), lt is the suction duct, lla & yo suction nozzle (suction port), 13 is the blowout. 13aC is the outlet, 15 is the circulation duct, and W is the cold-rolled coil (material to be treated). 11F Applicant: Sento Steel Works Co., Ltd., patent attorney, Tsutomu, Figure 2, WA (Hr)□
Claims (2)
た後、所定温度に冷却するようにした箱型熱処理炉にお
いて、上記炉本体内に配置される被処理材の上方に該被
処理材を輻射熱により加熱するための多数の輻射熱源を
配設し、下面に多数の吸込み口を有する吸込みダクトを
上記輻射熱源の上方に配設し、上面に多数の吹出し口を
有する吹出しダクトを上記被処理材の下方に配設し、該
吹出しダクトと上記吸込みダクトとを循環ダクトにより
連通し、該循環ダクトに循環ファンを配設するとともに
、該循環ダクトの循環ファン下流側にガスクーラを配設
したことを特徴とする箱型熱処理炉。(1) In a box-shaped heat treatment furnace in which the material to be treated is heated to a predetermined temperature in the box-shaped furnace body and then cooled to a predetermined temperature, the material to be treated is placed above the material placed in the furnace body. A large number of radiant heat sources for heating the material to be treated with radiant heat are provided, a suction duct having a large number of suction ports on a lower surface is provided above the radiant heat source, and a blower has a large number of air outlets on an upper surface. A duct is disposed below the material to be treated, the blow-off duct and the suction duct are connected through a circulation duct, a circulation fan is disposed in the circulation duct, and a gas cooler is disposed downstream of the circulation fan in the circulation duct. A box-type heat treatment furnace characterized by being equipped with.
焼鈍炉であり、上記輻射熱源が、炉本体内上記吸込み口
が、吸込みダクトから隣接するラジアントチューブ間に
延びる管状の吸込みノズルであることを特徴とする特許
請求の範囲第１項記載の箱型熱処理炉。(2) The heat treatment furnace is a batch-type annealing furnace for cold-rolled steel sheet coils, and the radiant heat source is a tubular suction nozzle in which the suction port in the furnace body extends from a suction duct between adjacent radiant tubes. A box-type heat treatment furnace according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28182685A JPS62139829A (en) | 1985-12-13 | 1985-12-13 | Box type heat treatment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28182685A JPS62139829A (en) | 1985-12-13 | 1985-12-13 | Box type heat treatment furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62139829A true JPS62139829A (en) | 1987-06-23 |
| JPS6345455B2 JPS6345455B2 (en) | 1988-09-09 |
Family
ID=17644536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28182685A Granted JPS62139829A (en) | 1985-12-13 | 1985-12-13 | Box type heat treatment furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62139829A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0790388A (en) * | 1993-09-22 | 1995-04-04 | Ishikawajima Harima Heavy Ind Co Ltd | Heat treatment furnace for round steel coil |
| KR100776662B1 (en) | 2006-10-02 | 2007-11-15 | 이점순 | Heat treament method and apparatus |
| JP2012017498A (en) * | 2010-07-07 | 2012-01-26 | Furukawa Electric Co Ltd:The | Cooling apparatus for annealing, annealing system, and method for cooling material to be annealed |
-
1985
- 1985-12-13 JP JP28182685A patent/JPS62139829A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0790388A (en) * | 1993-09-22 | 1995-04-04 | Ishikawajima Harima Heavy Ind Co Ltd | Heat treatment furnace for round steel coil |
| KR100776662B1 (en) | 2006-10-02 | 2007-11-15 | 이점순 | Heat treament method and apparatus |
| JP2012017498A (en) * | 2010-07-07 | 2012-01-26 | Furukawa Electric Co Ltd:The | Cooling apparatus for annealing, annealing system, and method for cooling material to be annealed |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6345455B2 (en) | 1988-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3048383A (en) | Furnace or like system for gas-supporting and treating flat work | |
| JP4480231B2 (en) | Convection brazing method and apparatus for metal workpiece | |
| ES8603990A1 (en) | Industrial furnace for the thermal treatment of metal workpieces | |
| US2422105A (en) | Cooling apparatus for heat-treated work using air jets | |
| US2276971A (en) | Annealing furnace | |
| JPS62139829A (en) | Box type heat treatment furnace | |
| US4970372A (en) | Furnace for the thermal treatment of iron and steel components | |
| JPS6321730B2 (en) | ||
| JPH03257119A (en) | Roller hearth type vacuum furnace | |
| US4444554A (en) | Heating method and apparatus | |
| US2432239A (en) | Annealing furnace | |
| EP0237334A2 (en) | Process and apparatus for the firing of ceramic products | |
| CN105004191B (en) | A kind of box type gas heat-treatment furnace | |
| CN219433799U (en) | Flow equalizing type air mixing device of oven | |
| JPS55107735A (en) | Batch annealing furnace operating method | |
| CN216482200U (en) | Kiln tail cooling device for tunnel kiln | |
| JPS6321567Y2 (en) | ||
| JPS6389630A (en) | Control method for auxiliary heating device in box type heat-treatment furnace | |
| US3445098A (en) | Method and device for improving the temperature equalization of gases in tunnel furnaces and ovens | |
| JPH04289129A (en) | Dehydrogenation treatment equipment for wire coil | |
| JPS61199031A (en) | Apparatus for circulating gas in heat treating furnace | |
| US2509856A (en) | Heating apparatus | |
| JPS62116725A (en) | Annealing furnace | |
| JPH057235Y2 (en) | ||
| US2244113A (en) | Lehr and method of treating glassware therein |