JPS6036449B2 - Heat treatment furnace for long materials - Google Patents
Heat treatment furnace for long materialsInfo
- Publication number
- JPS6036449B2 JPS6036449B2 JP7856380A JP7856380A JPS6036449B2 JP S6036449 B2 JPS6036449 B2 JP S6036449B2 JP 7856380 A JP7856380 A JP 7856380A JP 7856380 A JP7856380 A JP 7856380A JP S6036449 B2 JPS6036449 B2 JP S6036449B2
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- heat treatment
- treatment furnace
- long materials
- burner
- 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
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
Description
【発明の詳細な説明】 本発明は最尺材の熱処理炉に関するものである。[Detailed description of the invention] The present invention relates to a heat treatment furnace for the largest material.
従釆、長尺材の熱処理炉において、省エネルギーの観点
および処理材の曲りを防止するために、処理材の装入織
部（炉尻部）の温度を６００〜７００ｏｏに保持するよ
うにしている。In a furnace for heat treatment of long materials, the temperature of the charging weave (furnace end) of the treated material is maintained at 600 to 700 oo for energy saving and to prevent bending of the treated material.
この方法としては、加熱帯での拝ガス自体を利用する方
法と、炉装入側の炉中方向に多数の小容量バーナを設け
る方法とがある。This method includes a method of using the gas itself in the heating zone, and a method of providing a large number of small-capacity burners in the direction of the furnace on the furnace charging side.
しかしながら、前者の方法では、炉内ガスが炉装入側（
炉尻側）に設けた排気口の吸引作用による流れを形成す
るため、炉中方向において流れに帰りが生じ、処理材を
均一に加熱することができない。However, in the former method, the furnace gas is transferred to the furnace charging side (
Since the flow is created by the suction effect of the exhaust port provided at the bottom of the furnace, a return occurs in the flow in the direction of the furnace, making it impossible to uniformly heat the material to be treated.
また、後者の方法では、処理材の装入停止あるいは抽出
待ち等があると、前記バーナの燃競量を絞る必要がある
が、この絞り比が大きくなると燃焼バランスがくずれ、
均一如添を行うことができないという欠点があった。本
発明は前記従来の欠点を除去するためになされたもので
、最尺材をその長手方向を直交する方向に順次移送して
加熱する長尺材の熱処理炉において、炉装入側の所定帯
城の天井部に、バーナ、循環ファンおよび噴流ノズルと
からなる熱風循環装置を配置し、常に、噴流ノズルから
所定温度の気体を炉中方向に均一に墳出させ、処理材を
噴流加熱するとともに、この帯城に炉長方向の強制循環
流を形成させるようにして、排気口の位置およし、びバ
ーナの燃焼バランス等に何ら左右されることなく処理材
を均一の低温加熱することのできる最尺村の熱処理炉を
提供しようとするものである。In addition, in the latter method, if the charging of processing material is stopped or there is a wait for extraction, it is necessary to reduce the combustion rate of the burner, but if this reduction ratio becomes large, the combustion balance will be disrupted.
There was a drawback that it was not possible to perform a uniform process. The present invention has been made in order to eliminate the above-mentioned drawbacks of the conventional method, and is provided in a heat treatment furnace for long materials in which the largest materials are sequentially transferred and heated in a direction perpendicular to the longitudinal direction of the materials. A hot air circulation device consisting of a burner, a circulation fan, and a jet nozzle is placed on the ceiling of the castle, and the jet nozzle constantly pumps gas at a predetermined temperature uniformly in the direction of the furnace, heating the material with a jet and heating it. By forming a forced circulation flow in the direction of the furnace length in this band, the material to be treated can be heated at a uniform low temperature without being affected by the position of the exhaust port or the combustion balance of the burner. The aim is to provide the best heat treatment furnace possible.
つぎに、本発明を実施例である図面にしたがって説明す
る。Next, the present invention will be explained according to the drawings which are examples.
第１図は本発明の第１実施例を示し、熱風循環装置を炉
内に内蔵させた内部循環方式を採用したものである。FIG. 1 shows a first embodiment of the present invention, which employs an internal circulation system in which a hot air circulation device is built into the furnace.
図において、炉１は予熱帯２およびバーナ４、６を有す
る加熱帯３、均熱帯５とからなり、袋入ｏーラ７により
装入された長尺の処理材Ｗは固定ビームおよび移動ビー
ムからなるウオーキングビーム装置８により炉内を搬送
されて所定熱処理を経て抽出ローラ９により炉外に抽出
されるようになつている。In the figure, a furnace 1 consists of a preheating zone 2, a heating zone 3 having burners 4 and 6, and a soaking zone 5, and a long processing material W charged by a bag aura 7 is connected to a fixed beam and a moving beam. The material is conveyed through the furnace by a walking beam device 8 consisting of the following, undergoes a predetermined heat treatment, and is extracted out of the furnace by an extraction roller 9.
そして、前記加熱帯３および均熱帯５からの排ガスは炉
菱入側（炉尻側）に設けた排気ローｏａから排ガスダク
ト１０に排出されるものである。The exhaust gas from the heating zone 3 and the soaking zone 5 is discharged into the exhaust gas duct 10 from an exhaust row oa provided on the furnace inlet side (furnace bottom side).
１ １は前記予熱帯２に設けた本発明にかかる熱風循環
装置で、下面にたとえば多数の炉中方向の開〇を有する
ノズル１３を備えたバツフル１４で構成された噴流／ズ
ル１２と、前記噴流ノズル１２の側方から炉内雰囲気を
吸引するとともに濃伴して昇庄する循環ファン１５と、
炉壁に設けた複数の小容量バーナ１６から構成したもの
である。1 1 is a hot air circulation device according to the present invention installed in the preheating zone 2, and includes a jet/zzle 12 composed of a buttful 14 equipped with a nozzle 13 having a plurality of openings in the direction of the furnace, for example, on the lower surface; a circulation fan 15 that sucks in the furnace atmosphere from the side of the jet nozzle 12, and lifts the atmosphere in a concentrated manner;
It is composed of a plurality of small capacity burners 16 provided on the furnace wall.
したがって、炉内排ガスとバーナ１６による燃焼ガスは
、ともに前記循環ファン１５により吸引欄梓されて噴流
ノズル１２のノズル１３から下方に噴出し、下方に位置
する処理材Ｗに均一な噴流を与えるとともに、炉内ガス
が炉長方向の強制循環流を形成し、処理材を均一に予熱
することになる。なお、前記バーナ１６の燃焼状態は子
熱帯２内を６００〜７００００に保持するように、図示
しない温度検出装置等により制御されている。前記の場
合、ノズル１３からは均一温度に加熱された加熱気体が
噴出するため、従来のように処理材Ｗに部分的に熱歪を
生じさせることはない。また、バーナ１６の燃焼量を絞
って燃焼バランスがくずれても前記同様理由により処理
材Ｗを均一加熱することになる。第２図、第３図は、本
発明にかかる第２実施例を示し、第１実施例におけるバ
ーナ１６、循環ファン１５を炉外に設けた外部循紀方式
を採用したものである。Therefore, both the furnace exhaust gas and the combustion gas from the burner 16 are suctioned by the circulation fan 15 and ejected downward from the nozzle 13 of the jet nozzle 12, giving a uniform jet stream to the processing material W located below. , the gas in the furnace forms a forced circulation flow in the direction of the furnace length, which uniformly preheats the processing material. Incidentally, the combustion state of the burner 16 is controlled by a temperature detecting device (not shown) or the like so as to maintain the temperature in the child zone 2 at 600 to 70,000 ℃. In the above case, since the heated gas heated to a uniform temperature is ejected from the nozzle 13, the treated material W is not partially thermally strained as in the conventional case. Moreover, even if the combustion balance is lost by reducing the combustion amount of the burner 16, the treated material W will be uniformly heated for the same reason as described above. 2 and 3 show a second embodiment of the present invention, in which an external circulation system is adopted in which the burner 16 and circulation fan 15 of the first embodiment are provided outside the furnace.
すなわち、炉内ガスの一部は排ガスダクト１０へ至る通
路１７から循環ファン１５により吸引されたのち、昇圧
されつつ蝿拝された乱流となり、炉外に設けた燃焼室１
８でバーナ１６により均一温度の加熱気体となって子熱
帯２の天井に設けた噴流ノズル１２のノズル１３から下
方に噴出し、処理材Ｗを均一に加熱する。That is, a part of the gas in the furnace is sucked by the circulation fan 15 from the passage 17 leading to the exhaust gas duct 10, and then becomes a turbulent flow while being pressurized, and flows into the combustion chamber 1 provided outside the furnace.
At step 8, the heated gas is heated to a uniform temperature by the burner 16, and is ejected downward from the nozzle 13 of the jet nozzle 12 provided on the ceiling of the child zone 2, thereby uniformly heating the processing material W.
その他は第１実施例と同様であるため説明を省略する。
以上の説明で明らかなように、本発明によれば、小容量
バーナを使用するものの、炉内ガスをバーナで加熱する
とともにファンにより均一に縄拝してノズルから強制的
に処理材に噴出させ、かつ炉長方向の強制循環流を形成
させるため、排気口による炉内ガスの偏流や、バーナ制
御に基ずく燃焼量のアンバランス等に何ら影響されるこ
となく、常に均一加熱気体の噴流と、強制対流により処
理材を適当の６００〜７００００にて加熱でき、所定帯
域での処理材の曲りを防止することができる。The rest is the same as the first embodiment, so the explanation will be omitted.
As is clear from the above description, according to the present invention, although a small-capacity burner is used, the gas in the furnace is heated by the burner and evenly distributed by a fan, so that it is forcibly ejected from the nozzle onto the treated material. , and to form a forced circulation flow in the furnace length direction, it is not affected by the uneven flow of gas in the furnace due to the exhaust port or the unbalanced combustion amount based on burner control, and the jet flow of heated gas is always uniform. The treated material can be heated to an appropriate temperature of 600 to 70,000 ℃ by forced convection, and bending of the treated material in a predetermined zone can be prevented.
第１図は本発明にかかる長尺村の熱処理炉の第１実施例
を示す断面図、第２図は第２実施例の断面図で、第３図
は第２図の一部断面平面図である。
２・・・・・・予熱帯、１１・・・・・・熱風循環装置
、１２・・・…噴流ノズル、１３…・・・ノズル、１４
．．・バッフル、１５・・…・循環ファン、１６・・・
…バーナ、Ｗ・・・・・・処理材。
第１図
第２図
第３図FIG. 1 is a cross-sectional view showing a first embodiment of the heat treatment furnace of Nagashamura according to the present invention, FIG. 2 is a cross-sectional view of the second embodiment, and FIG. 3 is a partially sectional plan view of FIG. 2. It is. 2...Pre-heating zone, 11...Hot air circulation device, 12...Jet nozzle, 13...Nozzle, 14
．． ．．・Baffle, 15...Circulation fan, 16...
...burner, W...processed material. Figure 1 Figure 2 Figure 3
Claims (1)
て加熱する長尺材の熱処理炉において、前記炉の装入側
の所定帯域に、該帯域の天井部に位置する噴流ノズルと
該噴流ノズルに熱風を供給する循環フアンと前記熱風を
加熱するバーナとからなる熱風循環装置を配置したこと
を特徴とする長尺材の熱処理炉。1. In a heat treatment furnace for long materials that sequentially transfers and heats long materials in a direction perpendicular to the longitudinal direction thereof, a jet nozzle located at the ceiling of the zone and a 1. A heat treatment furnace for long materials, characterized in that a hot air circulation device comprising a circulation fan that supplies hot air to a jet nozzle and a burner that heats the hot air is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7856380A JPS6036449B2 (en) | 1980-06-10 | 1980-06-10 | Heat treatment furnace for long materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7856380A JPS6036449B2 (en) | 1980-06-10 | 1980-06-10 | Heat treatment furnace for long materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS575825A JPS575825A (en) | 1982-01-12 |
| JPS6036449B2 true JPS6036449B2 (en) | 1985-08-20 |
Family
ID=13665363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7856380A Expired JPS6036449B2 (en) | 1980-06-10 | 1980-06-10 | Heat treatment furnace for long materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6036449B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62117923A (en) * | 1985-11-15 | 1987-05-29 | Kobe Steel Ltd | Control circuit for traveling of construction machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2883444B2 (en) * | 1990-11-30 | 1999-04-19 | 梶原 平 | Agricultural synthetic resin sheet and its manufacturing equipment |
| JP3064611B2 (en) * | 1991-12-24 | 2000-07-12 | 住友化学工業株式会社 | Agricultural coating film |
-
1980
- 1980-06-10 JP JP7856380A patent/JPS6036449B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62117923A (en) * | 1985-11-15 | 1987-05-29 | Kobe Steel Ltd | Control circuit for traveling of construction machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS575825A (en) | 1982-01-12 |
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