JP2842767B2 - Heat treatment furnace for round steel coil - Google Patents
Heat treatment furnace for round steel coilInfo
- Publication number
- JP2842767B2 JP2842767B2 JP5236932A JP23693293A JP2842767B2 JP 2842767 B2 JP2842767 B2 JP 2842767B2 JP 5236932 A JP5236932 A JP 5236932A JP 23693293 A JP23693293 A JP 23693293A JP 2842767 B2 JP2842767 B2 JP 2842767B2
- Authority
- JP
- Japan
- Prior art keywords
- round steel
- steel coil
- furnace
- 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 - Fee Related
Links
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Articles (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、炉本体内に装入した線
材ないしは棒鋼をコイル状に巻いた丸鋼コイルを加熱・
冷却して熱処理する熱処理炉に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for heating a round steel coil in which a wire or a steel bar charged in a furnace body is wound in a coil shape.
The present invention relates to a heat treatment furnace for cooling and heat treatment.
【０００２】[0002]
【従来の技術】従来、線材ないしは棒鋼をコイル状に巻
いたバーインコイル（以下丸鋼コイルと称する）を加熱
・冷却する熱処理炉にあっては、ベル型の炉本体を有す
るもが一般的である。図３は、従来の丸鋼コイルの焼鈍
炉３０の一例である。前記焼鈍炉３０は、ベル型の炉本
体３１を有し、該炉本体３１の炉床３２上にディフュー
ザ３３を設置し、このディフューザ３３上に焼鈍すべき
丸鋼コイル３４を１段或いは複数個段積みして積載する
ようになっている。2. Description of the Related Art Conventionally, a heat treatment furnace for heating and cooling a bar-in coil (hereinafter referred to as a round steel coil) in which a wire or a steel bar is wound into a coil shape generally has a bell-shaped furnace main body. is there. FIG. 3 shows an example of a conventional round steel coil annealing furnace 30. The annealing furnace 30 has a bell-shaped furnace body 31, a diffuser 33 is installed on a hearth 32 of the furnace body 31, and one or more round steel coils 34 to be annealed are placed on the diffuser 33. It is designed to be stacked and loaded.
【０００３】炉本体３１の上部および中部には、炉内部
加熱用のバーナー３６が設けられている。炉本体３１の
炉内部において、前記バーナー３６の内、上方に設けた
バーナー３６の上方には、燃料ガスまたは燃焼空気を供
給する燃料ガスマニホールド３７・燃焼空気マニホール
ド３８が設けられている。前記ディフューザ３３内に
は、炉本体３１内の雰囲気ガスを循環するための雰囲気
ガス循環ファン３９および雰囲気ガス循環ファン３９を
回転するためのモータ４０が設けられている。雰囲気ガ
ス循環ファン３９を運転することにより雰囲気ガスを炉
本体３１内に図中矢印方向に雰囲気ガス気流を形成する
ようになっている。[0003] A burner 36 for heating the inside of the furnace is provided at an upper portion and a middle portion of the furnace body 31. Inside the furnace of the furnace main body 31, a fuel gas manifold 37 and a combustion air manifold 38 for supplying fuel gas or combustion air are provided above the burner 36 provided above the burners 36. In the diffuser 33, an atmosphere gas circulation fan 39 for circulating the atmosphere gas in the furnace main body 31 and a motor 40 for rotating the atmosphere gas circulation fan 39 are provided. By driving the atmosphere gas circulation fan 39, the atmosphere gas forms an atmosphere gas flow in the furnace main body 31 in the direction of the arrow in the figure.
【０００４】前記焼鈍炉３０において、丸鋼コイル３４
の焼鈍を行なうには、丸鋼コイル３４をディフューザ３
３上に前述の形態に積載した後、インナーカバー３５を
被せて丸鋼コイル３４を被い、ディフューザ３３とイン
ナーカバー３５とで囲まれた空間内に丸鋼コイル３４を
内蔵するようにし、さらに、インナーカバー３５の外側
に炉本体３１を被せてディフューザ３３とインナーカバ
ー３５とを炉本体３１と炉床３２とで囲まれた空間内に
内蔵するようにする。そして、この状態で、燃料ガスマ
ニホールド３７から燃料ガスを、燃焼空気マニホールド
３８から燃焼空気を供給しつつバーナー３６に点火して
炉本体３１内を燃焼・昇温する。また、前記雰囲気ガス
循環ファン３９を運転することにより、インナーカバー
３５内に図中矢印の気流を形成し、丸鋼コイル３４は前
記インナーカバー３５からの輻射熱とインナーカバー３
５炉内部の対流伝熱とで、加熱・昇温されるようになっ
ている。In the annealing furnace 30, a round steel coil 34
In order to perform annealing, the round steel coil 34 is connected to the diffuser 3
After loading in the above-mentioned form on 3, the inner cover 35 is covered and the round steel coil 34 is covered, and the round steel coil 34 is built in the space surrounded by the diffuser 33 and the inner cover 35. The furnace body 31 is placed outside the inner cover 35 so that the diffuser 33 and the inner cover 35 are built in a space surrounded by the furnace body 31 and the hearth 32. In this state, the burner 36 is ignited while fuel gas is supplied from the fuel gas manifold 37 and combustion air is supplied from the combustion air manifold 38 to burn and heat the inside of the furnace main body 31. Further, by operating the atmosphere gas circulation fan 39, an airflow indicated by an arrow in the figure is formed in the inner cover 35, and the round steel coil 34 radiates heat from the inner cover 35 and the inner cover 3
The convection heat transfer inside the five furnaces heats and raises the temperature.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、前記の
ような丸鋼コイルの熱処理炉の場合、以下のような問題
が生じていた。すなわち、前記丸鋼コイル３４をディフ
ューザ３３上に段積みする工程は、段の上部に積む丸鋼
コイル３４の重心位置の調整が微妙でズレやすく、丸鋼
コイル３４が転倒しないように細心の注意を払うように
する必要があり、作業性に不満があった。また、丸鋼コ
イル３４の積載状態が不安定なため、インナーカバー３
５を被せる際にも、インナーカバー３５が丸鋼コイル３
４に接触しないようにするために注意を払う必要がある
ことは勿論、逆に、焼鈍の完了後、丸鋼コイル３４の取
り出し時にも、炉本体３１やインナーカバー３５を細心
の注意を払いながら取り外す必要がある。すなわち、丸
鋼コイル３４のハンドリングが難しくて、不安定であっ
た。However, in the case of the heat treatment furnace for round steel coils as described above, the following problems have occurred. That is, in the step of stacking the round steel coils 34 on the diffuser 33, the position of the center of gravity of the round steel coils 34 stacked on the upper part of the step is delicate and easily shifted, and extreme care is taken so that the round steel coils 34 do not fall down. It was necessary to pay, and I was dissatisfied with workability. Further, since the loading state of the round steel coil 34 is unstable, the inner cover 3
When the inner cover 35 is covered with the round steel coil 3
On the contrary, it is necessary to pay attention to prevent the contact with the furnace body 4 and the inner cover 35 while taking out the round steel coil 34 after the completion of the annealing. Must be removed. That is, handling of the round steel coil 34 was difficult and unstable.
【０００６】一方、前記のように丸鋼コイル３４を縦方
向に積載した状態で焼鈍した場合、丸鋼コイル３４の自
重で丸鋼コイル３４の弦巻の間隔が押し潰されて密着し
て隙間が無くなるケースがあり、この様な場合、丸鋼コ
イル３４の各弦巻の間において雰囲気ガスが流通量にば
らつきが生じる結果、焼鈍時の均熱性が損なわれて丸鋼
コイル３４の機械的性質に均等性が損なわれたり、丸鋼
コイル３４同志の接触部分が擦れて傷付くなどして、品
質や歩留まりが低下するといった問題も生じていた。On the other hand, when the round steel coil 34 is annealed in a vertically loaded state as described above, the interval between the helical turns of the round steel coil 34 is crushed by the weight of the round steel coil 34, and the gap is formed due to close contact. In such a case, there is a variation in the flow rate of the atmospheric gas between the respective windings of the round steel coil 34, and as a result, the heat uniformity during annealing is impaired and the mechanical properties of the round steel coil 34 are equalized. There is also a problem that the quality and yield are reduced due to impairment of the properties and rubbing and scratching of the contact portions between the round steel coils 34.
【０００７】さらに、前記のような焼鈍炉３０の場合、
焼鈍のみを行なうものが主体であるため、付加価値の高
い製品の製造が困難である。しかしながら、前記問題に
鑑みて、ガスアローイング装置を設けて高付加価値製品
の製造に対応しようとしても、丸鋼コイル３４の弦巻間
を流通する雰囲気ガスの流れが均一で無いために丸鋼コ
イル３４の均等なガスアローイングを困難にする結果、
製品の品質や歩留まりが低下して、高い付加価値のある
品質、製品が得られない。Furthermore, in the case of the annealing furnace 30 as described above,
It is difficult to manufacture a high value-added product because the main component is only annealing. However, in view of the above-mentioned problem, even if an attempt is made to provide a gas-adding device to cope with the production of a high value-added product, since the flow of the atmosphere gas flowing between the round turns of the round steel coil 34 is not uniform, the round steel coil As a result, it is difficult to achieve uniform gas
The quality and yield of products are reduced, and quality and products with high added value cannot be obtained.
【０００８】本発明は、前述の課題に鑑みてなされたも
ので、丸鋼コイルの炉への装入・抽出が安全でかつ容易
にでき、しかも、丸鋼コイルの熱処理製品の品質および
生産性が向上する丸鋼コイルの熱処理炉を提供すること
を目的とするものである。The present invention has been made in view of the above-mentioned problems, and it is possible to safely and easily insert and extract a round steel coil into a furnace, and to further improve the quality and productivity of a heat-treated product of a round steel coil. It is an object of the present invention to provide a heat treatment furnace for a round steel coil having improved heat resistance.
【０００９】[0009]
【課題を解決するための手段】請求項１記載の発明で
は、炉本体内に装入した線材ないしは棒鋼をコイル状に
巻いた丸鋼コイルを加熱・冷却して熱処理する熱処理炉
であって、前記炉本体を、炉内部に前記丸鋼コイルを横
置き状に装入可能に構成し、前記炉本体内に装入した丸
鋼コイルの少なくとも軸方向寸法を調整可能な軸方向調
整機構を具備したことを特徴とする丸鋼コイルの熱処理
炉を前記課題の解決手段とした。請求項２記載の発明で
は、請求項１記載の丸鋼コイルの熱処理炉であって、前
記炉本体には、前記丸鋼コイルを炉本体に対して出し入
れ自在に吊支する吊支機構を具備したことを特徴とする
丸鋼コイルの熱処理炉を前記課題の解決手段とした。請
求項３記載の発明では、請求項１または２のいずれかに
記載の丸鋼コイルの熱処理炉であって、前記炉本体内に
装入した前記丸鋼コイルを横置き状に支持可能な簀の子
状のコイル受け台を具備したことを特徴とする丸鋼コイ
ルの熱処理炉を前記課題の解決手段とした。請求項４記
載の発明では、請求項１ないし３のいずれかに記載の丸
鋼コイルの熱処理炉であって、請求項１ないし４のいず
れかに記載の丸鋼コイルの熱処理炉であって、前記炉本
体内に丸鋼コイルを脱炭等のガスアローイングをするた
めの給湿装置および湿度調整装置を具備したことを特徴
とする丸鋼コイルの熱処理炉を前記課題の解決手段とし
た。請求項５記載の発明では、請求項１ないし４のいず
れかに記載の丸鋼コイルの熱処理炉であって、前記炉本
体に、炉内部の雰囲気ガスの冷却装置を炉外に設置して
接続したことを特徴とする丸鋼コイルの熱処理炉を前記
課題の解決手段とした。請求項６記載の発明では、請求
項１ないし５のいずれかに記載の丸鋼コイルの熱処理炉
であって、前記炉本体に、炉本体内部の雰囲気ガスの循
環経路を、炉本体内部の加熱期と冷却期とで切り換える
循環経路切り換え装置を具備したことを特徴とする丸鋼
コイルの熱処理炉を前記課題の解決手段とした。請求項
７記載の発明では、請求項１ないし３のいずれかに記載
の丸鋼コイルの熱処理炉であって、前記軸方向調整機構
は、炉本体内に装入した前記丸鋼コイルの軸方向一側の
端部に当接される当接部材と、該当接部材を丸鋼コイル
の軸方向に少なくとも丸鋼コイルを圧縮する方向に移動
可能な移動機構とを備えてなることを特徴とする丸鋼コ
イルの熱処理炉を前記課題の解決手段とした。According to the first aspect of the present invention, there is provided a heat treatment furnace for performing heat treatment by heating and cooling a round steel coil in which a wire or a bar steel wound in a furnace body is wound in a coil shape. The furnace main body is configured so that the round steel coil can be loaded horizontally in the furnace, and the round steel coil inserted into the furnace main body is configured.
Axial adjustment with adjustable at least axial dimension of steel coil
An object of the present invention is to provide a heat treatment furnace for round steel coils, which is provided with an adjusting mechanism . According to a second aspect of the present invention, there is provided the heat treatment furnace for a round steel coil according to the first aspect, wherein the furnace main body is provided with a suspension mechanism for suspending the round steel coil in and out of the furnace main body. A heat treatment furnace for a round steel coil, characterized in that it has been made, is a means for solving the above-mentioned problem. According to a third aspect of the present invention, there is provided the heat treatment furnace for a round steel coil according to any one of the first to second aspects, wherein the round steel coil is capable of supporting the round steel coil loaded in the furnace body in a horizontal state. A heat treatment furnace for a round steel coil, comprising a coil-shaped pedestal, is provided as means for solving the above-mentioned problem. According to a fourth aspect of the present invention, there is provided the heat treatment furnace for a round steel coil according to any one of the first to third aspects, and the heat treatment furnace for the round steel coil according to any one of the first to fourth aspects, A heat treatment furnace for round steel coils, characterized in that the furnace body is provided with a humidifier and a humidity controller for performing gas arranging such as decarburization of the round steel coils, is a means for solving the above-mentioned problem. According to a fifth aspect of the present invention, there is provided the heat treatment furnace for a round steel coil according to any one of the first to fourth aspects, wherein a cooling device for atmospheric gas inside the furnace is installed outside the furnace and connected to the furnace body. A heat treatment furnace for a round steel coil, characterized in that it has been made, is a means for solving the above-mentioned problem. According to a sixth aspect of the present invention, there is provided the heat treatment furnace for a round steel coil according to any one of the first to fifth aspects, wherein a circulation path of an atmosphere gas inside the furnace main body is provided in the furnace main body. A heat treatment furnace for a round steel coil, comprising a circulation path switching device for switching between a cooling period and a cooling period, is a means for solving the above-mentioned problem. According to a seventh aspect of the present invention, there is provided the heat treatment furnace for a round steel coil according to any one of the first to third aspects , wherein the axial direction adjusting mechanism includes an axial direction of the round steel coil charged in a furnace main body. It is characterized by comprising a contact member contacting one end, and a moving mechanism capable of moving the contact member at least in a direction of compressing the round steel coil in the axial direction of the round steel coil. A heat treatment furnace for round steel coils was used as means for solving the above problems.
【００１０】[0010]
【作用】請求項１記載の発明によれば、炉の所定位置に
丸鋼コイルを横置き状態に装入・積載した後、炉本体を
セットすることにより、熱処理可能状態となる。炉本体
内に装入・積載された丸鋼コイルは、自重が自身の断面
方向に作用するので、軸方向の寸法への自重の影響がな
い。また、軸方向調整部材が、炉本体内に装入した丸鋼
コイルの軸方向端部を丸鋼コイルの軸方向に押圧または
引っ張って、丸鋼コイルの軸方向の寸法を調整する。請
求項２記載の発明によれば、吊支機構により熱処理すべ
き丸鋼コイルを、炉本体に対して搬送，装入および抽出
する。請求項３記載の発明によれば、コイル受け台が丸
鋼コイルを横置き状に支持する。コイル受け台は、丸鋼
コイルを炉床から上方に支持するとともに、雰囲気ガス
気流が簀の子の隙間を流通可能なので、丸鋼コイルの下
方にも炉内の雰囲気ガス気流を形成する。請求項４記載
の発明によれば、丸鋼コイルの熱処理中に給湿装置およ
び湿度調整装置を作動することにより、炉本体内の露点
水分量を目的値に調整して、目的のガスアローイングを
行なう。請求項５記載の発明によれば、炉内雰囲気ガス
を炉外に設置した冷却装置を通して、炉本体内部の雰囲
気ガスを冷却し、冷却雰囲気ガスにして再び炉内に吹き
込み、熱処理およびガスアローイング後の丸鋼コイルを
冷却する。請求項６記載の発明によれば、循環経路切り
換え装置が、炉本体内の雰囲気ガスの気流を制御して、
炉本体の加熱期および冷却期のそれぞれにおいて、炉本
体内に目的の雰囲気ガスの循環経路を形成する。請求項
７記載の発明によれば、丸鋼コイルの一側に当接部材を
当接し、他側に当接部材または炉本体内の部材を当接
し、前記当接部材の内の少なくとも１つを丸鋼コイルの
軸方向に移動して、丸鋼コイルの軸方向の寸法を調整す
る。According to the first aspect of the present invention, after the round steel coil is loaded and loaded at a predetermined position of the furnace in a horizontal state, the furnace main body is set to be in a heat-treatable state. The round bar coil loaded and loaded in the furnace body has no influence on its axial dimension because its own weight acts in its own cross-sectional direction. In addition, the axial adjustment member is a round steel
Press the axial end of the coil in the axial direction of the round steel coil or
Pull to adjust the axial dimension of the round steel coil. According to the second aspect of the present invention, the round steel coil to be heat-treated by the suspension mechanism is transported, charged, and extracted into the furnace main body. According to the third aspect of the present invention, the coil cradle supports the round steel coil horizontally. The coil cradle supports the round steel coil upward from the hearth and allows the atmospheric gas flow to flow through the gap between the cages, thereby forming an atmospheric gas flow in the furnace below the round steel coil. According to the fourth aspect of the present invention, by operating the humidifier and the humidity controller during the heat treatment of the round steel coil, the dew point water content in the furnace main body is adjusted to the target value, and the target gas arrowing is performed. Perform According to the fifth aspect of the present invention, the atmosphere gas inside the furnace body is cooled through a cooling device installed outside the furnace, the atmosphere gas inside the furnace body is cooled, the atmosphere gas is blown into the furnace again, and the heat treatment and gas arrowing are performed. The subsequent round steel coil is cooled. According to the invention described in claim 6 , the circulation path switching device controls the gas flow of the atmospheric gas in the furnace main body,
In each of the heating period and the cooling period of the furnace body, a circulation path of a target atmosphere gas is formed in the furnace body. Claim
According to the invention as set forth in claim 7 , the contact member is in contact with one side of the round steel coil, and the contact member or a member in the furnace main body is contacted with the other side, and at least one of the contact members is round. Move in the axial direction of the steel coil to adjust the axial dimension of the round steel coil.
【００１１】[0011]
【実施例】以下本発明の一実施例を、図１および図２を
参照して説明する。図中符号１は、本実施例の丸鋼コイ
ルの熱処理炉の炉本体である。炉本体１は、箱型であっ
て、前面（図１左側）に、炉内部に対して丸鋼コイルＭ
を装入・抽出するための開口部１ａが開口されている。
炉本体１の該開口部１ａ近傍には、開口部１ａを開閉す
るためのドア２が設けられている。ドア２は、開口部１
ａを閉塞して炉内外の気密構造を構成している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In the figure, reference numeral 1 denotes a furnace main body of the round steel coil heat treatment furnace of the present embodiment. The furnace body 1 is box-shaped, and a round steel coil M is provided on the front side (left side in FIG. 1) with respect to the inside of the furnace.
The opening 1a for charging / extracting is opened.
In the vicinity of the opening 1a of the furnace body 1, a door 2 for opening and closing the opening 1a is provided. Door 2 has opening 1
a is closed to form an airtight structure inside and outside the furnace.
【００１２】炉本体１の炉床１ｂには、上面に前記丸鋼
コイルＭを横置き状に支持するコイル受け台３が設けら
れている。炉本体１の上部および下部には、丸鋼コイル
Ｍを加熱するための上部・下部輻射管４・４’がそれぞ
れ水平方向に連設されている。また、図１および図２に
示すように、前記各上部・下部輻射管４・４’には、上
部・下部輻射管４・４’に熱を供給するための上部・下
部輻射管バーナー５・５’および排ガスダクト６および
レキュペレータ６’が取り付けられている。前記コイル
受け台３は、上面にセットした前記丸鋼コイルＭに下部
輻射管４’の熱が有効に照射され、かつ、炉本体１内を
循環する雰囲気ガスが丸鋼コイルＭに有効に接触してし
かも滞留しない構造になっている。On the upper surface of the hearth 1b of the furnace main body 1, a coil receiving base 3 for supporting the round steel coil M in a horizontal state is provided. Upper and lower radiating tubes 4 and 4 ′ for heating the round steel coil M are horizontally connected to the upper and lower portions of the furnace body 1, respectively. As shown in FIGS. 1 and 2, each of the upper and lower radiation tubes 4, 4 'has an upper and lower radiation tube burner 5, which supplies heat to the upper and lower radiation tubes 4, 4'. 5 'and the exhaust gas duct 6 and the recuperator 6' are attached. The coil holder 3 effectively irradiates the round steel coil M set on the upper surface with the heat of the lower radiation tube 4 ′, and the atmosphere gas circulating in the furnace body 1 effectively contacts the round steel coil M. And it has a structure that does not stay.
【００１３】炉本体１の後壁１ｃには、炉本体１内の雰
囲気ガスを循環する循環ファン７が設けられている。該
循環ファン７のケーシングには、雰囲気ガスを炉本体１
内の上部と下部とで均等に吐出する上部・下部吐出口８
・８’が設けられている。また、前記コイル受け台３の
循環ファン７側には、丸鋼コイルＭのコイル倒れ防止壁
３’が設けられ、コイル受け台３の中心部には吸い込み
集合ダクトＤが設けられている。On the rear wall 1c of the furnace body 1, a circulation fan 7 for circulating the atmospheric gas in the furnace body 1 is provided. Atmosphere gas is supplied to the casing of the circulation fan 7 in the furnace body 1.
Upper and lower discharge ports 8 that discharge evenly between the upper and lower parts inside
・ 8 ′ is provided. A coil fall prevention wall 3 ′ for the round steel coil M is provided on the side of the circulation fan 7 of the coil receiver 3, and a suction collecting duct D is provided at the center of the coil receiver 3.
【００１４】炉本体１の外部には、雰囲気ガスを冷却す
る冷却装置１１が設置されている。この冷却装置１１
は、吸気切り換え弁（循環経路切り換え弁）９と、吸引
口１０’と、吸引ダクト１０と、クーラー１１ａと、冷
却雰囲気ガス送風機１１ｂと、冷却雰囲気ガス吹き込み
ダクト１２と、冷却雰囲気ガス吹き込み口１２’と、冷
却雰囲気ガス吹き込み切り換え弁（循環経路切り換え
弁）１３とで構成されている。また、冷却装置１１は、
冷却雰囲気ガス吹き込み切り換え弁１３等を調整するこ
とにより、炉本体１内の雰囲気ガスの循環流路を切り換
え可能な構造に構成されている。A cooling device 11 for cooling the atmospheric gas is provided outside the furnace body 1. This cooling device 11
Is a suction switching valve (circulation path switching valve) 9, a suction port 10 ', a suction duct 10, a cooler 11a, a cooling atmosphere gas blower 11b, a cooling atmosphere gas blowing duct 12, and a cooling atmosphere gas blowing port 12. And a cooling atmosphere gas blowing switching valve (circulation path switching valve) 13. Further, the cooling device 11 includes:
By adjusting the cooling atmosphere gas blowing switching valve 13 and the like, the circulation path of the atmosphere gas in the furnace main body 1 can be switched.
【００１５】前記ドア２は、丸鋼コイルＭを炉本体１の
後壁１ｃ方向に押圧可能な押し付け装置（軸方向調整機
構）１４と、該押し付け装置１４を駆動するシリンダ
（当接部材，移動機構）１５を有している。該押し付け
装置１４は、軸線を前記後壁１ｃに垂直に配設した丸鋼
コイルＭの後壁１ｃと反対側に位置する軸方向端面を押
圧することにより、丸鋼コイルＭの軸方向の寸法、すな
わち丸鋼コイルＭ間の隙間を適正に押し縮めるようにな
っている。なお、押し付け装置１４は、押し付けとは逆
に丸鋼コイルＭの後壁１ｃと反対側の軸方向端部を後壁
１ｃと反対の方向に引っ張る機能や、丸鋼コイルＭの軸
方向寸法を所定の長さで固定維持する機能を有していれ
ば一層好ましい。一方、炉本体１は、丸鋼コイルＭに脱
炭等のガスアローイングを施すための給湿装置１６およ
び湿度調整装置１７を具備している。The door 2 has a pressing device (axial direction adjusting mechanism) 14 capable of pressing the round steel coil M in the direction of the rear wall 1c of the furnace body 1, and a cylinder (abutting member, moving member) for driving the pressing device 14. Mechanism 15). The pressing device 14 presses an axial end face located on the opposite side of the rear wall 1c of the round steel coil M whose axis is arranged perpendicular to the rear wall 1c, so that the axial dimension of the round steel coil M is increased. That is, the gap between the round steel coils M is appropriately compressed and shrunk. The pressing device 14 has a function of pulling the axial end of the round steel coil M opposite to the rear wall 1c in the direction opposite to the rear wall 1c in the direction opposite to the pressing, and the axial dimension of the round steel coil M. It is more preferable to have a function of maintaining a fixed length. On the other hand, the furnace main body 1 is provided with a humidifier 16 and a humidity controller 17 for performing gas arranging such as decarburization on the round steel coil M.
【００１６】以下、本実施例の作用および効果を説明す
る。ここでは、本実施例の丸鋼コイルの熱処理炉を用い
た丸鋼コイルＭの熱処理として、丸鋼コイルＭをアズロ
ール状態で搬送および熱処理操業する場合を説明する。The operation and effect of this embodiment will be described below. Here, as the heat treatment of the round steel coil M using the round steel coil heat treatment furnace of the present embodiment, a case where the round steel coil M is transported and heat-treated in an as-roll state will be described.
【００１７】（１）丸鋼コイルＭをコイル置き場から、
クレーンフック１８とＣ型フック（吊支機構）１９とで
吊り上げ、炉本体１の炉前に搬送し、ドア２を開放して
開口してしている開口部１ａから炉本体１内に装入す
る。この時、Ｃ型フック１９は、炉本体１の天井１ｄに
設けたＣ型フックガイド装置（吊支機構）１９’により
丸鋼コイルＭを常に安定に、かつ、容易にコイル受け台
３の中心上に横置き状に積載されるようになっている。
なお、前記Ｃ型フック１９は、通常の丸鋼コイルＭ搬送
用のＣ型フックを使用することができる。(1) A round steel coil M is removed from a coil storage place.
Lifted by the crane hook 18 and the C-type hook (suspension mechanism) 19, transported to the furnace of the furnace body 1, and loaded into the furnace body 1 from the opening 1 a which is opened by opening the door 2. I do. At this time, the C-shaped hook 19 is always stably and easily moved to the center of the coil receiving base 3 by the C-shaped hook guide device (suspension support mechanism) 19 ′ provided on the ceiling 1 d of the furnace main body 1. It is designed to be loaded horizontally on top.
The C-shaped hook 19 can be a normal C-shaped hook for transporting a round steel coil M.
【００１８】（２）丸鋼コイルＭの炉本体１への装入が
完了したら、ドア２を閉じて開口部１ａを閉塞し、炉本
体１内と炉外との気密性を保持する。この後、押し付け
装置１４をシリンダ１５により駆動して押し付け装置１
４を丸鋼コイルＭのドア２側の端面をコイル倒れ防止壁
３’側に押圧する。これは、アズロール状の丸鋼コイル
Ｍでは、コイル間の隙間が自在に変動可能になっている
ため、コイル間の隙間を適正にするためである。丸鋼コ
イルＭ間の隙間を適正にすることは、後述する加熱・均
熱（昇温）サイクル、冷却サイクルおよびガスアローイ
ング操業において大きな効果を発揮する。すなわち、炉
本体１内を循環する雰囲気ガスが丸鋼コイルＭ間の隙間
を均一に接触して流れるために、温度分布が均等にな
り、品質の向上が図れるとともに、丸鋼コイルＭの加熱
・冷却の効率が良くなってその時間の短縮が図れる。こ
のように、押し付け装置１４は、丸鋼コイルＭ間の隙間
の均一化に重要な機能を有しているが、丸鋼コイルＭの
高さに応じてシリンダ１５のストロークを調整すること
により常に丸鋼コイルＭ間の隙間を適正にして、丸鋼コ
イルＭを保持するようになっている。(2) When charging of the round steel coil M into the furnace main body 1 is completed, the door 2 is closed to close the opening 1a, and the airtightness between the inside of the furnace main body 1 and the outside of the furnace is maintained. Thereafter, the pressing device 14 is driven by the cylinder 15 to press the pressing device 1.
4 is pressed against the door 2 side end surface of the round steel coil M toward the coil fall prevention wall 3 ′. This is because, in the as-rolled round steel coil M, the gap between the coils can be freely changed, so that the gap between the coils is made appropriate. Making the gap between the round steel coils M appropriate has a great effect in a heating / soaking (heating) cycle, a cooling cycle, and a gas arranging operation, which will be described later. That is, since the atmosphere gas circulating in the furnace main body 1 flows in uniform contact with the gap between the round steel coils M, the temperature distribution becomes uniform, the quality can be improved, and the heating and heating of the round steel coil M can be achieved. The cooling efficiency is improved, and the time can be reduced. As described above, the pressing device 14 has an important function to equalize the gap between the round steel coils M, but always adjusts the stroke of the cylinder 15 in accordance with the height of the round steel coil M. The gap between the round steel coils M is made appropriate to hold the round steel coils M.
【００１９】（３）前記丸鋼コイルＭの装入・積載が完
了したら、循環ファン７を運転し、炉本体１内を所定の
雰囲気ガスに置換し、上部・下部輻射管バーナー５・
５’を点火して加熱・均熱（昇温）サイクルを開始す
る。この加熱・均熱（昇温）サイクルにおいては、保持
位置の丸鋼コイルＭの上下に前記上部・下部輻射管４・
４’がそれぞれ複数連設されているため丸鋼コイルＭの
上下から極めて均一に熱が供給される上、丸鋼コイルＭ
が雰囲気ガス気流が通過可能なコイル受け台３上に支持
されて全体に雰囲気ガス気流が均等に供給可能なので、
丸鋼コイルＭが上下から極めて均一に加熱される。な
お、本実施例の丸鋼コイルの熱処理炉は、上部・下部輻
射管４・４’の排気側に設けられたレキュペレータ６’
で、燃焼空気または燃料ガスを予熱して、廃熱回収を行
ない、省エネルギが考慮されている。燃料ガスは、レキ
ュペレータ６’で廃熱回収された後、放散される。(3) When the loading and loading of the round steel coil M is completed, the circulation fan 7 is operated to replace the inside of the furnace main body 1 with a predetermined atmospheric gas, and the upper and lower radiant tube burners 5.
Ignition 5 'starts a heating / soaking (heating) cycle. In this heating / soaking (heating) cycle, the upper and lower radiation tubes 4 are located above and below the round steel coil M at the holding position.
4 ′ are provided in a plural number so that heat is supplied from the top and bottom of the round steel coil M very uniformly, and the round steel coil M
Is supported on the coil receiving base 3 through which the atmospheric gas flow can pass, and the entire atmosphere gas flow can be uniformly supplied.
The round steel coil M is heated very uniformly from above and below. In addition, the heat treatment furnace of the round steel coil of the present embodiment includes a recuperator 6 ′ provided on the exhaust side of the upper and lower radiation tubes 4, 4 ′.
Thus, waste air is recovered by preheating combustion air or fuel gas, and energy saving is considered. The fuel gas is exhausted after the waste heat is recovered by the recuperator 6 '.
【００２０】（４）循環ファン７の上部・下部吐出口８
・８’から、炉本体１の上部または下部方向に吐出され
た雰囲気ガスは、図中実線矢印のように丸鋼コイルＭの
まわりを包み込むように、しかも、丸鋼コイルＭ間の隙
間を満遍なく流れて図中破線矢印のように吸い込み集合
ダクトＤに集合された後、循環ファン７で循環される。(4) Upper and lower discharge ports 8 of circulation fan 7
From 8 ′, the atmospheric gas discharged in the upper or lower direction of the furnace main body 1 wraps around the round steel coils M as shown by solid arrows in the figure, and evenly fills the gaps between the round steel coils M. After flowing and being collected in the suction collecting duct D as indicated by the broken line arrow in the drawing, it is circulated by the circulation fan 7.
【００２１】（５）丸鋼コイルＭを脱炭等の所謂ガスア
ローイング操業する給湿装置１６と湿度調整装置１７と
は、丸鋼コイルＭが所定の加熱温度に達したら作動する
ようになっている。前記給湿装置１６は、水蒸気を炉本
体１内に供給して、炉本体１内の循環雰囲気ガスを湿気
ガスにする機能をもっている。前記湿度調整装置１７
は、露点検出器等を備えて、炉本体１内の循環雰囲気ガ
スの露点を予め定められた露点に調整する機能を持って
いる。そして、給湿装置１６と湿度調整装置１７とは、
設定された露点の信号を湿度調整装置１７から給湿装置
１６に与えると、この露点に見合った量の水蒸気が給湿
装置１６から炉本体１内に供給されるようになってい
る。すなわち、炉本体１内が常時設定値の露点になるよ
うに供給水蒸気量が調整される。(5) The humidifier 16 and the humidity controller 17 for performing so-called gas arranging operation such as decarburization of the round steel coil M are activated when the round steel coil M reaches a predetermined heating temperature. ing. The humidifier 16 has a function of supplying steam into the furnace main body 1 to convert the circulating atmosphere gas in the furnace main body 1 into a moisture gas. The humidity controller 17
Has a function of adjusting the dew point of the circulating atmosphere gas in the furnace body 1 to a predetermined dew point by providing a dew point detector or the like. And the humidifier 16 and the humidity controller 17
When a signal of the set dew point is given from the humidity controller 17 to the humidifier 16, an amount of steam corresponding to the dew point is supplied from the humidifier 16 into the furnace body 1. That is, the supplied steam amount is adjusted such that the inside of the furnace main body 1 always has the dew point of the set value.
【００２２】（６）脱炭操業における丸鋼コイルＭの脱
炭量（脱炭深さ）は、概ね、前記設定露点と給湿時間と
によって決定される。したがって、設定露点と給湿時間
とを調整することにより、丸鋼コイルＭの表面の薄い表
面層から中心部までの深い脱炭処理の操業が任意に調整
可能である。脱炭された丸鋼コイルＭは、当然に柔らか
く、加工性を良くしたり、表面を柔らかくして中心部の
み処理前の硬さを維持するようにしたりする等々、用途
によって幅広くしかも高付加価値の品質の製品を得るこ
とができる。(6) The decarburization amount (decarburization depth) of the round steel coil M in the decarburization operation is generally determined by the set dew point and the humidification time. Therefore, by adjusting the set dew point and the humidification time, the operation of the deep decarburization treatment from the thin surface layer on the surface of the round steel coil M to the center can be arbitrarily adjusted. The decarburized round steel coil M is naturally soft and has good workability, and its surface is soft to maintain the hardness before processing only in the central part. Quality products can be obtained.
【００２３】（７）冷却サイクルにはいると、炉本体１
内の循環雰囲気ガスを炉外に設置した冷却装置１１に通
して冷却した後、冷却雰囲気ガスにして、再び炉本体１
内に吹き込む。この時、炉本体１内の高温雰囲気ガス
は、後壁１ｃの上部に設けた吸気切り換え弁９を開放
し、吸引口１０’から吸引ダクト１０を介して冷却装置
１１内に入るのである。なお、前記冷却装置１１には、
クーラー１１ａと冷却雰囲気ガス送風機１１ｂとが搭載
されている。一方、冷却装置１１において冷却された冷
却雰囲気ガスは、冷却雰囲気ガス吹き込みダクト１２を
介して、吸気切り換え弁９と同時に開放している冷却雰
囲気ガス吹き込み切り換え弁１３を通して冷却雰囲気ガ
ス吹き込み口１２’から炉本体１内に吹き込まれる。こ
の炉本体１内に吹き込まれた冷却雰囲気ガスは、丸鋼コ
イルＭの周りを有効に流れ、丸鋼コイルＭ間の隙間を満
遍なく流れて丸鋼コイルＭを均一にしかも短時間で冷却
するようになっている。(7) Upon entering the cooling cycle, the furnace body 1
The circulating atmosphere gas inside the furnace is cooled by passing through a cooling device 11 installed outside the furnace.
Blow in. At this time, the high-temperature atmosphere gas in the furnace body 1 opens the intake switching valve 9 provided on the upper portion of the rear wall 1c, and enters the cooling device 11 from the suction port 10 'through the suction duct 10. The cooling device 11 includes:
A cooler 11a and a cooling atmosphere gas blower 11b are mounted. On the other hand, the cooling atmosphere gas cooled in the cooling device 11 passes through the cooling atmosphere gas blowing duct 12 and the cooling atmosphere gas blowing port 12 ′ through the cooling atmosphere gas blowing switching valve 13 which is opened simultaneously with the intake switching valve 9. It is blown into the furnace body 1. The cooling atmosphere gas blown into the furnace main body 1 effectively flows around the round steel coils M, flows evenly between the round steel coils M, and cools the round steel coils M uniformly and in a short time. It has become.
【００２４】なお、本実施例においては、前記吸引口１
０’を炉本体１の上部に、冷却雰囲気ガス吹き込み口１
２’を同下部に各々１箇所に設けるようにしたが、炉形
や炉本体１の大きさによっては吸引口１０’と冷却雰囲
気ガス吹き込み口１２’の上下関係を反対にすることも
出来る。吸引口１０’と冷却雰囲気ガス吹き込み口１
２’の設置数を複数とすれば、前記効果を一層顕著にす
ることができる。In this embodiment, the suction port 1
0 ′ is placed in the upper part of the furnace main body 1 and the cooling atmosphere gas blowing port 1
Although 2 'is provided at one place in the lower part, the vertical relationship between the suction port 10' and the cooling atmosphere gas blowing port 12 'can be reversed depending on the furnace shape and the size of the furnace main body 1. Suction port 10 'and cooling atmosphere gas blowing port 1
When the number of 2 'is set to be plural, the above effect can be further remarkable.
【００２５】冷却を完了した丸鋼コイルＭは、Ｃ型フッ
ク１９により炉本体１内から抽出され、結束機にかけて
フープ状に結束して、コイルヤードに搬送される。The cooled round steel coil M is extracted from the furnace main body 1 by the C-shaped hook 19, bound by a binding machine in a hoop shape, and transported to the coil yard.
【００２６】ここまで、丸鋼コイルＭがアズロール状態
での操業の場合について述べたが、結束状態の操業の場
合でも同様である。ただ、結束状態の場合は、隣接する
丸鋼コイルＭ同志がタイトに密接状態になっているた
め、丸鋼コイルＭ間の隙間に雰囲気ガスが流れにくく、
温度分布や品質の均一性はアズロール状態の場合より若
干劣る。Up to this point, the case where the round steel coil M is operated in the as-roll state has been described, but the same applies to the case where the round steel coil M is operated in the united state. However, in the united state, since the adjacent round steel coils M are in a tightly close state, it is difficult for the atmosphere gas to flow through the gap between the round steel coils M,
The temperature distribution and the uniformity of the quality are slightly inferior to those in the as-roll state.
【００２７】なお、本実施例では、図１および図２に示
すように、炉本体１の前後方向２箇所の丸鋼コイルＭを
直列に、炉幅方向に２列、合計４個の丸鋼コイルＭを装
入する場合を例示したが、この他に、炉本体１の前後方
向に１個の丸鋼コイルＭを、炉幅方向に３列、合計３個
の丸鋼コイルＭを装入する例など種々のパターンが可能
である。なお、これら丸鋼コイルＭの配列パターンは、
丸鋼コイルＭの寸法、生産量等によって決定される。In this embodiment, as shown in FIGS. 1 and 2, two round steel coils M in the front-rear direction of the furnace main body 1 are arranged in series, two rows in the furnace width direction, a total of four round steel coils. Although the case where the coil M is inserted is illustrated, in addition to this, one round steel coil M is inserted in the front-rear direction of the furnace main body 1 and three round steel coils M are inserted in three rows in the furnace width direction. Various patterns are possible, for example. In addition, the arrangement pattern of these round steel coils M is as follows.
It is determined by the size, production volume and the like of the round steel coil M.
【００２８】[0028]
【発明の効果】以上説明したように、請求項１記載の丸
鋼コイルの熱処理炉によれば、炉本体内に装入した線材
ないしは棒鋼をコイル状に巻いた丸鋼コイルを加熱・冷
却して熱処理する熱処理炉であって、前記炉本体を、炉
内部に前記丸鋼コイルを横置き状に装入可能に構成し、
前記炉本体内に装入した丸鋼コイルの少なくとも軸方向
寸法を調整可能な軸方向調整機構を具備したことを特徴
とするから、丸鋼コイルの装入・抽出やハンドリングが
極めて安定で、かつ容易であり、作業能率が向上するほ
か、炉内における装入状態が極めて安定しているので転
倒等の危険性がなく、丸鋼コイルのハンドリングおよび
所定位置への丸鋼コイルの装入・抽出作業等の作業性が
向上するとともに、丸鋼コイル間の隙間が常時適正に確
保される結果、丸鋼コイル表面への擦れ傷の発生が防止
され、しかも、炉内の雰囲気ガスが丸鋼コイルのコイル
間の隙間を均一に流通して熱処理の均等や、加熱や冷却
の能率向上が図れ、製品の歩留まりや品質や生産性が向
上するといった優れた効果を奏する。また、コイル間の
隙間を適正に調整することができるので、前記熱処理の
均等化や、丸鋼コイルの加熱・冷却能率等が一層向上す
る。 As described above, according to the heat treatment furnace for a round steel coil according to the first aspect, the round steel coil in which the wire or the bar steel charged in the furnace main body is coiled is heated and cooled. A heat treatment furnace for performing heat treatment, wherein the furnace body is configured so that the round steel coil can be placed horizontally in the furnace ,
At least the axial direction of the round steel coil charged in the furnace body
It is equipped with an axial adjustment mechanism that can adjust the dimensions, so the loading, extraction and handling of round steel coils are extremely stable and easy, and the work efficiency is improved. Since the loading state is extremely stable, there is no danger of falling over, and the workability of handling the round steel coil and loading / extracting the round steel coil to a predetermined position is improved, The gap between the round steel coils is prevented from being scratched on the surface of the round steel coils, and the atmosphere gas in the furnace is evenly distributed through the gaps between the round steel coils to achieve even heat treatment. In addition, the efficiency of heating and cooling can be improved, and excellent effects such as improvement in product yield, quality, and productivity can be achieved. Also between the coils
Since the gap can be properly adjusted, the heat treatment
Equalization and further improvement of heating and cooling efficiency of round steel coil
You.
【００２９】請求項２記載の丸鋼コイルの熱処理炉によ
れば、請求項１記載の丸鋼コイルの熱処理炉であって、
前記炉本体には、前記丸鋼コイルを炉本体に対して出し
入れ自在に吊支する吊支機構を具備したことを特徴とす
るから、前記請求項１記載の発明の効果を有することは
勿論、常時安定かつ容易に丸鋼コイルの炉内装入および
炉内からの抽出ができて合理的であり、しかも、自動
化，省力化が可能である。According to the heat treatment furnace for a round steel coil according to claim 2, the heat treatment furnace for a round steel coil according to claim 1,
Since the furnace main body is provided with a suspending mechanism for suspending the round steel coil so as to be able to be taken in and out of the furnace main body, it is needless to say that the furnace body has the effect of the invention according to claim 1. The round steel coil can be always stably and easily inserted into the furnace interior and extracted from inside the furnace, which is reasonable. Moreover, automation and labor saving are possible.
【００３０】請求項３記載の丸鋼コイルの熱処理炉によ
れば、請求項１または２のいずれかに記載の丸鋼コイル
の熱処理炉であって、前記炉本体内に装入した前記丸鋼
コイルを横置き状に支持可能な簀の子状のコイル受け台
を具備したことを特徴とするから、前記請求項１記載の
発明の効果を有することは勿論、丸鋼コイルがコイル受
け台に炉床から上方に支持されるので、丸鋼コイルの特
に下方の雰囲気ガスの循環効率が改善されて、前記熱処
理の均等化等が一層促進される。According to a third aspect of the present invention, there is provided the heat treatment furnace for a round steel coil according to any one of the first to second aspects, wherein the round steel charged in the furnace main body is provided. The present invention is characterized in that it has a coil-shaped coil receiving base capable of supporting the coil in a horizontal state, so that the round steel coil has a hearth in the coil receiving base as well as having the effect of the invention according to claim 1. , The circulation efficiency of the atmosphere gas, particularly below the round steel coil, is improved, and the uniformity of the heat treatment and the like are further promoted.
【００３１】[0031]
【００３２】請求項４記載の丸鋼コイルの熱処理炉によ
れば、請求項１ないし３のいずれかに記載の丸鋼コイル
の熱処理炉であって、前記炉本体内に丸鋼コイルを脱炭
等のガスアローイング操業を可能にするための給湿装置
および湿度調整装置を具備したことを特徴とするから、
前記請求項１記載の発明の効果を有することは勿論、構
成の簡単な炉におけるガスアローイング操業を可能に
し、安価で、しかも付加価値の高い製品の製造が可能で
ある。According to a fourth aspect of the present invention, in the heat treatment furnace for a round steel coil according to any one of the first to third aspects, the round steel coil is decarburized in the furnace body. Because it was equipped with a humidifying device and a humidity adjusting device to enable the gas arrowing operation such as
In addition to having the effects of the first aspect of the present invention, it is possible to operate a gas arranging operation in a furnace having a simple structure, and to manufacture a low-cost and high-value-added product.
【００３３】請求項５記載の丸鋼コイルの熱処理炉によ
れば、請求項１ないし４のいずれかに記載の丸鋼コイル
の熱処理炉であって、前記炉本体に、炉内部の雰囲気ガ
スの冷却装置を炉外に設置して接続したことを特徴とす
るから、前記請求項１記載の発明の効果を有することは
勿論、雰囲気ガスの冷却効率が向上するので、熱処理製
品の生産性が向上する。According to the heat treatment furnace for a round steel coil according to claim 5, the heat treatment furnace for a round steel coil according to any one of claims 1 to 4 , wherein the furnace body is provided with an atmosphere gas inside the furnace. Since the cooling device is installed outside the furnace and connected, not only the effect of the first aspect of the present invention is provided, but also the cooling efficiency of the atmosphere gas is improved, so that the productivity of the heat-treated product is improved. I do.
【００３４】請求項６記載の丸鋼コイルの熱処理炉によ
れば、請求項１ないし５のいずれかに記載の丸鋼コイル
の熱処理炉であって、前記炉本体に、炉本体内部の雰囲
気ガスの循環経路を、炉本体内部の加熱期と冷却期とで
切り換える循環経路切り換え装置を具備したことを特徴
とするから、前記請求項１記載の発明の効果を有するこ
とは勿論、雰囲気ガスおよび丸鋼コイルの加熱や冷却の
効率が向上して、熱処理製品の生産性を一層向上するこ
とができる。According to the heat treatment furnace for a round steel coil according to claim 6, the heat treatment furnace for a round steel coil according to any one of claims 1 to 5 , wherein the furnace body has an atmosphere gas inside the furnace body. A circulation path switching device for switching the circulation path between the heating period and the cooling period inside the furnace main body, so that the atmosphere gas and the round gas can be obtained. The efficiency of heating and cooling of the steel coil is improved, and the productivity of the heat-treated product can be further improved.
【００３５】請求項７記載の丸鋼コイルの熱処理炉によ
れば、請求項１ないし３のいずれかに記載の丸鋼コイル
の熱処理炉であって、前記軸方向調整機構は、炉本体内
に装入した前記丸鋼コイルの軸方向一側の端部に当接さ
れる当接部材と、該当接部材を丸鋼コイルの軸方向に少
なくとも丸鋼コイルを圧縮する方向に移動可能な移動機
構とを備えてなることを特徴とするから、前記請求項１
記載の発明の効果を有することは勿論、移動機構の駆動
により当接部材を移動するだけで丸鋼コイルの軸方向の
寸法を簡単かつ正確に変更できるので、丸鋼コイルのコ
イル間の隙間を常に適正に保持できるので、熱処理製品
の品質および生産性を一層向上することができる。[0035] According to the heat treatment furnace of round steel coil according to claim 7, a heat treatment furnace of round steel coil according to any one of claims 1 to 3, wherein the axial adjustment mechanism, in the furnace body An abutting member abutting on one axial end of the loaded round steel coil, and a moving mechanism capable of moving the contacting member at least in a direction of compressing the round steel coil in the axial direction of the round steel coil. 2. The method according to claim 1, further comprising:
It is possible to easily and accurately change the axial dimension of the round steel coil simply by moving the contact member by driving the moving mechanism, so that the gap between the coils of the round steel coil can be reduced. Since it can always be kept properly, the quality and productivity of the heat-treated product can be further improved.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の一実施例を示す側断面図である。FIG. 1 is a side sectional view showing one embodiment of the present invention.
【図２】前記図１の正断面図である。FIG. 2 is a front sectional view of FIG. 1;
【図３】従来例を示す正断面図である。FIG. 3 is a front sectional view showing a conventional example.
１ 炉本体 １ｂ 炉床 ３ コイル受け台 ７ 循環ファン ９ 循環経路切り換え弁（吸気切り換え弁） １１ 冷却装置 １３ 循環経路切り換え弁（冷却雰囲気ガス吹き込み切
り換え弁） １４ 軸方向調整機構（押し付け装置） １５ 当接部材，移動機構（シリンダ） １６ 給湿装置 １７ 湿度調整装置 １９ 吊支機構（Ｃ型フック） １９’ 吊支機構（Ｃ型フックガイド装置） Ｄ 吸い込み集合ダクト Ｍ 丸鋼コイルDESCRIPTION OF SYMBOLS 1 Furnace main body 1b Hearth 3 Coil pedestal 7 Circulation fan 9 Circulation path switching valve (intake switching valve) 11 Cooling device 13 Circulation path switching valve (cooling atmosphere gas blowing switching valve) 14 Axial adjustment mechanism (pressing device) 15 Contact member, moving mechanism (cylinder) 16 Humidifier 17 Humidity controller 19 Suspension mechanism (C-type hook) 19 'Suspension mechanism (C-type hook guide device) D Suction collecting duct M Round steel coil
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ２１Ｄ 9/00 Ｃ２１Ｄ 9/00 Ｄ (72)発明者 井浦 透 東京都江東区豊洲三丁目１番15号 石川 島播磨重工業株式会社 東二テクニカル センター内 (72)発明者 大串 正樹 東京都江東区豊洲三丁目１番15号 石川 島播磨重工業株式会社 東二テクニカル センター内 (72)発明者 菅沼 孝之 東京都千代田区丸の内一丁目１番２号 日本鋼管株式会社内 (72)発明者 石黒 守幸 東京都千代田区丸の内一丁目１番２号 日本鋼管株式会社内 (56)参考文献 特開 平１−129930（ＪＰ，Ａ) 特開 平４−358028（ＪＰ，Ａ) 特開 昭64−31920（ＪＰ，Ａ) 特開 昭47−33838（ＪＰ，Ａ) 特開 昭62−139829（ＪＰ，Ａ) 実開 平４−56747（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) C21D 1/00,1/74,1/767,9/00,9/52 C21D 9/663 F27B 11/00 F27D 3/12,5/00,7/04──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification symbol FI C21D 9/00 C21D 9/00 D (72) Inventor Toru Iura 3-1-1, Toyosu, Koto-ku, Tokyo Ishikawa Shima-Harima Heavy Industries Co., Ltd. (72) Inventor Masaki Ogushi 3-1-1-15 Toyosu, Koto-ku, Tokyo Ishikawa Shima-Harima Heavy Industries Co., Ltd. Into Toni Technical Center (72) Inventor Takayuki Suganuma 1-1-1, Marunouchi, Chiyoda-ku, Tokyo No. 2 Nippon Kokan Co., Ltd. (72) Inventor Moriyuki Ishiguro 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan Co., Ltd. (56) References JP-A-1-129930 (JP, A) JP-A-4-358028 (JP, A) JP-A-64-31920 (JP, A) JP-A-47-33838 (JP, A) JP-A-62-139829 (JP, A) 747 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) C21D 1 / 00,1 / 74,1 / 767,9 / 00,9 / 52 C21D 9/663 F27B 11/00 F27D 3 / 12,5 / 00,7 / 04
Claims (7)
コイル状に巻いた丸鋼コイルを加熱・冷却して熱処理す
る熱処理炉であって、前記炉本体を、炉内部に前記丸鋼
コイルを横置き状に装入可能に構成し、前記炉本体内に
装入した丸鋼コイルの少なくとも軸方向寸法を調整可能
な軸方向調整機構を具備したことを特徴とする丸鋼コイ
ルの熱処理炉。1. A heat treatment furnace for heating and cooling a round steel coil in which a wire or a bar steel wound in a coil shape is charged into a furnace body and heat-treating the same, wherein the furnace body is provided inside the furnace with the round steel coil. Is configured so that it can be placed horizontally, and inside the furnace body
At least the axial dimension of the inserted round steel coil can be adjusted
A heat treatment furnace for a round steel coil, comprising a simple axial adjustment mechanism .
あって、前記炉本体には、前記丸鋼コイルを炉本体に対
して出し入れ自在に吊支する吊支機構を具備したことを
特徴とする丸鋼コイルの熱処理炉。2. The heat treatment furnace for a round steel coil according to claim 1, wherein the furnace main body includes a suspension mechanism for suspending the round steel coil so as to be able to be taken in and out of the furnace main body. Characteristic heat treatment furnace for round steel coils.
鋼コイルの熱処理炉であって、前記炉本体内に装入した
前記丸鋼コイルを横置き状に支持可能な簀の子状のコイ
ル受け台を具備したことを特徴とする丸鋼コイルの熱処
理炉。3. A heat treatment furnace for a round steel coil according to claim 1, wherein said round steel coil is capable of supporting said round steel coil placed in said furnace body in a horizontal state. A heat treatment furnace for a round steel coil, comprising a cradle.
鋼コイルの熱処理炉であって、前記炉本体内に丸鋼コイ
ルを脱炭等のガスアローイング操業を可能にするための
給湿装置および湿度調整装置を具備したことを特徴とす
る丸鋼コイルの熱処理炉。4. A heat treatment furnace for a round steel coil according to any one of claims 1 to 3 , wherein a supply of the round steel coil to the furnace body for enabling a gas arranging operation such as decarburization. A heat treatment furnace for a round steel coil, comprising a humidity device and a humidity control device.
鋼コイルの熱処理炉であって、前記炉本体に、炉内部の
雰囲気ガスの冷却装置を炉外に設置して接続したことを
特徴とする丸鋼コイルの熱処理炉。5. A heat treatment furnace of round steel coil according to any one of claims 1 to 4, the furnace body, that is connected by installing a cooling device inside the furnace atmospheric gas out of the furnace Characteristic heat treatment furnace for round steel coils.
鋼コイルの熱処理炉であって、前記炉本体に、炉本体内
部の雰囲気ガスの循環経路を、炉本体内部の加熱期と冷
却期とで切り換える循環経路切り換え装置を具備したこ
とを特徴とする丸鋼コイルの熱処理炉。6. A heat treatment furnace of round steel coil according to any one of claims 1 to 5, the furnace body, the circulation path of the furnace body of the ambient gas, and cooling the furnace body interior of the heating phase A heat treatment furnace for a round steel coil, comprising a circulation path switching device for switching between different periods.
鋼コイルの熱処理炉であって、前記軸方向調整機構は、
炉本体内に装入した前記丸鋼コイルの軸方向一側の端部
に当接される当接部材と、該当接部材を丸鋼コイルの軸
方向に少なくとも丸鋼コイルを圧縮する方向に移動可能
な移動機構とを備えてなることを特徴とする丸鋼コイル
の熱処理炉。7. The heat treatment furnace for a round steel coil according to claim 1, wherein the axial adjustment mechanism comprises:
An abutting member abutting on one axial end of the round steel coil loaded in the furnace body, and moving the contacting member at least in the axial direction of the round steel coil in a direction to compress the round steel coil; A heat treatment furnace for a round steel coil, comprising a movable mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5236932A JP2842767B2 (en) | 1993-09-22 | 1993-09-22 | Heat treatment furnace for round steel coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5236932A JP2842767B2 (en) | 1993-09-22 | 1993-09-22 | Heat treatment furnace for round steel coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0790388A JPH0790388A (en) | 1995-04-04 |
| JP2842767B2 true JP2842767B2 (en) | 1999-01-06 |
Family
ID=17007893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5236932A Expired - Fee Related JP2842767B2 (en) | 1993-09-22 | 1993-09-22 | Heat treatment furnace for round steel coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2842767B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3593981B2 (en) | 2000-01-20 | 2004-11-24 | 日産自動車株式会社 | Method and apparatus for detecting movement amount between welding electrodes |
| JP2009287085A (en) * | 2008-05-29 | 2009-12-10 | Ihi Corp | Apparatus and method for heat-treatment |
| JP4797113B1 (en) * | 2010-09-22 | 2011-10-19 | 孝哉 長家 | Heat treatment method and coil holding jig used therefor |
| JP5863499B2 (en) * | 2012-02-17 | 2016-02-16 | 三菱重工業株式会社 | Heat treatment method |
| CN114908244B (en) * | 2022-04-09 | 2023-12-15 | 江苏腾天工业炉有限公司 | Large-scale desk-top gas low temperature annealing stove |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62139829A (en) * | 1985-12-13 | 1987-06-23 | Kobe Steel Ltd | Box type heat treatment furnace |
| JPS6431920A (en) * | 1987-07-28 | 1989-02-02 | Sumitomo Metal Ind | Method for preventing decarbonization after spheroidizing heat treatment and heat treating furnace |
| JPH01129930A (en) * | 1987-11-16 | 1989-05-23 | Daido Steel Co Ltd | Heat treatment furnace |
| JPH0456747U (en) * | 1990-09-19 | 1992-05-15 | ||
| JPH04358028A (en) * | 1991-04-23 | 1992-12-11 | Nippon Steel Corp | Pallet baking apparatus for wire rod coil |
-
1993
- 1993-09-22 JP JP5236932A patent/JP2842767B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0790388A (en) | 1995-04-04 |
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