JPS5864323A - Direct fire type coil annealing device - Google Patents
Direct fire type coil annealing deviceInfo
- Publication number
- JPS5864323A JPS5864323A JP16102481A JP16102481A JPS5864323A JP S5864323 A JPS5864323 A JP S5864323A JP 16102481 A JP16102481 A JP 16102481A JP 16102481 A JP16102481 A JP 16102481A JP S5864323 A JPS5864323 A JP S5864323A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- retort
- space
- burner
- base plate
- 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
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
- C21D9/663—Bell-type furnaces
- C21D9/677—Arrangements of heating devices
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は直火式コイル焼鈍装置に係わり、詳しくは炉壁
に設けたバーナカーらの燃焼ガスによって。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a direct-fired coil annealing device, and more specifically, the present invention relates to a direct-fired coil annealing device using combustion gas from a burner installed on the furnace wall.
レトルト内に入れられたコイルをＩＱＯＯ℃以上の同温
にて焼鈍する直火式焼鈍装置を二関する。Two direct-fire annealing devices are used to anneal a coil placed in a retort at the same temperature of IQOO°C or higher.
なお、直火式コイル焼鈍装置とはバーナからの燃焼ガス
を加熱源とするコイル焼鈍装置を云う。Note that the direct-fired coil annealing device refers to a coil annealing device that uses combustion gas from a burner as a heating source.
従来の直火式コイル焼鈍装置を第１図によシ述べる。図
面において、ｌは炉体、２は前記炉体ｌに設けられたバ
〜すである。３は炉床で、この炉床３にはコイル支持リ
ング４がおかれ、該コイル支持リング４はコイル台板５
を介してコイル６を支持しているｏ７はレトルト内雰囲
気ガス循環装置例えばベースファンで、前記炉床３上で
あってコイル支持リング４のは！中心部に設置されてい
る。A conventional direct-fired coil annealing apparatus is illustrated in FIG. In the drawings, 1 is a furnace body, and 2 is a bath provided in the furnace body 1. 3 is a hearth, a coil support ring 4 is placed on this hearth 3, and the coil support ring 4 is connected to a coil base plate 5.
O7, which supports the coil 6 via the retort atmosphere gas circulation device, such as a base fan, is above the hearth 3 and is located on the coil support ring 4! It is located in the center.
８はレトルトで、その内部におかれた前記コイル６を所
定の保護雰囲気下にて焼鈍するために、前記バーナ２か
らの燃焼ガスと隔離している。A retort 8 is isolated from the combustion gas from the burner 2 in order to anneal the coil 6 placed therein under a predetermined protective atmosphere.
ところで、前記コイル６はバーナ２の燃焼作用によシ加
熱されたレトルト８からの輻射によシ加熱される。一般
に良く知られている様にコイル６は、その半径方向の熱
伝達に比べ、高さ方向の熱伝達が圧倒的に大きいので、
最短時間で効率的に加熱する為、炉床３とコイル台板５
間のコイル支持リング４内に設けたベースファン７を作
動させて、謬囲気ガスを強制的に下部から循環させ、そ
の対−によってコイル６の加熱を促進していた。Incidentally, the coil 6 is heated by radiation from the retort 8 which is heated by the combustion action of the burner 2. As is generally well known, the heat transfer in the height direction of the coil 6 is overwhelmingly greater than the heat transfer in the radial direction.
Hearth 3 and coil base plate 5 for efficient heating in the shortest possible time
A base fan 7 provided in the coil support ring 4 between the two coils was operated to forcefully circulate ambient air gas from below, thereby promoting heating of the coil 6.
このレトルト内雰囲気ガス循環装置７を有するコイル焼
鈍装置は一般に広く使われているが、その殆んどが加熱
温度が６００〜９００℃程度の低温用コイル焼鈍炉であ
る。従って係るコイル焼鈍炉にて１０００℃以上の高温
度の焼鈍を行なう場合は、前記レトルト内雰囲気ガス循
環装置７の耐熱性耐久性が大きな問題となる。前記雰囲
気ガス循環装置の構成材料として、高級な耐熱鋼或いは
特殊な耐火物を使用するとしても、その耐久性及び整備
性が悪く、工業用実根設備としては成りたたなかった。Coil annealing apparatuses having this retort internal atmosphere gas circulation device 7 are generally widely used, and most of them are low-temperature coil annealing furnaces with a heating temperature of about 600 to 900°C. Therefore, when performing annealing at a high temperature of 1000° C. or higher in such a coil annealing furnace, the heat resistance and durability of the retort atmospheric gas circulation device 7 become a major problem. Even if high-grade heat-resistant steel or special refractories were used as the constituent material of the atmospheric gas circulation device, its durability and maintainability were poor, and it could not be used as an actual industrial facility.
また従来の直火式コイル焼鈍装置においては、炉床３と
最下段のコイル台板５の間隔は、ペースファン７が設置
可能なだけの間隔で通常１００〜２５０■であシ、かつ
前記コイル台板５は、外周部分をコイル支持リング４に
より支持さ屁ている。In addition, in the conventional direct-fired coil annealing apparatus, the distance between the hearth 3 and the lowest coil base plate 5 is usually 100 to 250 cm, which is enough to allow installation of the pace fan 7, and The base plate 5 is supported by a coil support ring 4 at its outer peripheral portion.
このため、従来の直火式コイル焼鈍装置で１０００℃以
上の高温に加熱した場合には、ペースファン７が実用に
耐えられないことと相まって、コイル下部から加熱作用
を与えることが難しく、大きな温度偏差を生じる。For this reason, when heating to a high temperature of 1000°C or higher using a conventional direct-fired coil annealing device, the pace fan 7 cannot withstand practical use, and it is difficult to apply a heating effect from the bottom of the coil, resulting in large temperatures. cause deviation.
直火式コイル焼鈍装置は、加熱源を電気ヒータとするコ
イル焼鈍装置にくらべ１元来温度偏差が大きいのである
卆、特に加熱温度を１０００ ’Ｃ以上の高温とする場
合には、温度偏差は大きくなる傾向がある。他の従来の
直火式コイル焼鈍装置としては、第２図に示す様にコイ
ル６を下部がらも°加熱する為に炉床３とコイル台板５
の間に補助ヒータニ９を設けたものもあった。Direct-fired coil annealing equipment inherently has a larger temperature deviation than coil annealing equipment that uses an electric heater as the heating source.Especially when the heating temperature is set to a high temperature of 1000'C or higher, the temperature deviation is It tends to get bigger. As shown in Fig. 2, other conventional direct-fired coil annealing equipment uses a hearth 3 and a coil base plate 5 to heat the lower part of the coil 6.
Some had an auxiliary heater 9 installed between them.
この様な補助ヒータ９を併用した直火式コイル焼鈍炉は
、この補助ヒータ９で消費する電力が大きく、熱処理に
必要なコストを考えた場合不利であり、また、この補助
ヒータ９への給電設備が必要となシ、設備が複雑化する
とともに設備費もがさみ問題である。A direct-fired coil annealing furnace that also uses such an auxiliary heater 9 is disadvantageous when considering the cost required for heat treatment because the auxiliary heater 9 consumes a large amount of power. The problem is that equipment is required, which increases the complexity of the equipment and increases equipment costs.
本発明は前記実情に鑑みてなされたもので、バーナから
の燃焼熱により、レトルト内におかれたコイルを１００
０℃以上の高温に温度偏差少なく加熱し焼鈍する直火式
コイル焼鈍装置を提供するものである。The present invention was made in view of the above-mentioned circumstances, and uses the combustion heat from the burner to burn the coil placed in the retort to 100%.
The present invention provides a direct-fired coil annealing device that heats and anneales at a high temperature of 0° C. or higher with little temperature deviation.
即ち本発明の要旨は、炉体にバーナを１段または多段に
設け、該バーナからの燃焼ガスによりレトルト内のコイ
ルを加熱するコイル焼鈍装置において、コイルを載置し
たコイル台板の中央下部に柱状支持具を設け、炉床と前
記コイル台板の間に３ｏｏａｍｉ上の高さ方向の空間を
形成し、少なくとも一部のバーナを、前記空間の高さの
範囲内の前記炉体に設けて、コイルを１０００℃以上の
高温にて加熱するようにしたことを特徴とする直火式コ
イル焼鈍装置にある。 □次に本発明を第３図
、第４図を参照して詳細に説明する。That is, the gist of the present invention is to provide a coil annealing apparatus in which a furnace body is provided with burners in one stage or in multiple stages, and a coil in a retort is heated by combustion gas from the burner. A columnar support is provided, a space in the height direction of 3 ooami is formed between the hearth and the coil base plate, at least some burners are provided in the furnace body within the height range of the space, and the coil There is a direct-fired coil annealing device characterized in that the coil is heated at a high temperature of 1000° C. or higher. □Next, the present invention will be explained in detail with reference to FIGS. 3 and 4.
図面において、１は炉体、２はバーナで、前記炉体ｌの
下部と中間部にレトルト８の接線方向向きに設けられて
いる。また下部に設けられたバーナ２−１は後述するが
、炉床３面とコイル台板５の間に形成された空間の高さ
と同じ高さ範囲内の炉体１に設けられている。In the drawings, 1 is a furnace body, and 2 is a burner, which are provided in the lower and intermediate portions of the furnace body 1 in the tangential direction of the retort 8. Moreover, the burner 2-1 provided at the lower part is provided in the furnace body 1 within the same height range as the height of the space formed between the hearth 3 surface and the coil base plate 5, as will be described later.
１０は柱状支持具で、コイル６を載置したコイル台板５
の下部中央を支持し、該コイル台板５と炉床３０間に高
さ方向の空間１１を形成している。10 is a columnar support, and a coil base plate 5 on which the coil 6 is placed.
A space 11 in the height direction is formed between the coil bed plate 5 and the hearth 30.
前記炉床３とコイ゛ル台板５の間の空間１１によシ、レ
トルト８の側面からの輻射熱１２が第４図に示すように
、コイル台板５の下面を通う、コイル６を下方からも加
熱する。この下方からの加熱を奏するに鉱、前記空間１
１の高さを３００１ｍ以上にする必要がある。この高さ
が低いとコイル６の下方からの加鳥作用が少なくなシ、
コイル６を１０００℃以上の高温にて焼鈍するさい温度
偏差が大となるので、３００ｍ以上とする。Due to the space 11 between the hearth 3 and the coil base plate 5, the radiant heat 12 from the side surface of the retort 8 passes through the lower surface of the coil base plate 5, causing the coil 6 to move downward, as shown in FIG. Heat it up as well. This space 1 is heated from below.
1 must be at least 3001m in height. If this height is low, there will be less force acting from below the coil 6.
Since the temperature deviation becomes large when the coil 6 is annealed at a high temperature of 1000° C. or higher, the length is set to 300 m or higher.
また本発明においては、前記空間１１の高さと同じ高さ
範囲内に、少なくとも一部のバーナ２−１を設けている
ので、該バーナ２−１で加熱されたレトルト８下側面か
らの輻射熱１２が、コイル下方から入熱され、コイル６
を高さ方向から効率的に加熱する。この加熱によりコイ
ル６内の温度偏差も小さくなる。Further, in the present invention, since at least some of the burners 2-1 are provided within the same height range as the height of the space 11, radiant heat 12 from the lower side of the retort 8 heated by the burners 2-1 is provided. The heat is input from below the coil, and the coil 6
heating efficiently from the height direction. This heating also reduces the temperature deviation within the coil 6.
さらに前記バーナ２−１から燃焼ガスはレトルト８に沿
って、上方に燃焼ガス流として当然流れるノテ、レトル
） ８ （７）−４面をも加熱する。これらの作用と曲
のバーナ２の燃焼ガスにより、レトルト８内にあるコイ
ル６は１０００ ℃以上の高温、例えば１１００℃に加
熱された場合にも温度偏差は少ない。Furthermore, the combustion gas from the burner 2-1 naturally flows upward along the retort 8 as a combustion gas flow, also heating the retort 8 (7)-4 surface. Due to these effects and the combustion gas of the burner 2, even when the coil 6 in the retort 8 is heated to a high temperature of 1000°C or higher, for example 1100°C, there is little temperature deviation.
本発明は以上のようであるから、バーナからの燃焼ガス
によシ、コイルを１０００℃以上の高温にて、温度偏差
も少なく焼鈍することが−できる。Since the present invention is as described above, the coil can be annealed at a high temperature of 1000° C. or higher with little temperature deviation using combustion gas from the burner.
またレトルト８の裾部はシール溝１３内に入れられ、レ
トルト８内に燃焼ガスが侵入しないようにしている。な
おレトルト８内には雰囲気ガス供給管（図示しない）が
設けられ雰囲気ガスを供給するようになっている。Further, the bottom portion of the retort 8 is placed in the seal groove 13 to prevent combustion gas from entering the retort 8. Note that an atmospheric gas supply pipe (not shown) is provided in the retort 8 to supply atmospheric gas.
次に実施例を示す。Next, examples will be shown.
板厚０．３ｍｍ、板巾９５０Ｍの珪素鋼帯に焼鈍分離剤
を塗布した後、巻取って外径１６００ ａｍとした珪素
鋼コイルを第１図に示した従来の直火式コイル焼鈍炉と
、本発明による高温用直火式コイル焼鈍炉に上って、そ
れぞれ１１７０℃に加熱した。A silicon steel strip with a plate thickness of 0.3 mm and a plate width of 950 m is coated with an annealing separator and then wound to form a silicon steel coil with an outer diameter of 1600 am. , and were heated to 1170° C. in a high-temperature direct-fired coil annealing furnace according to the present invention.
従来の焼鈍炉では、炉床３面とコイル台板５０間隙は２
２０龍で、ベース７アン７は停止させて本発明による焼
鈍炉では炉床３上面に外径５５０器、高さ３５Ｃ１ｎ＋
の耐熱鋼製の柱状支持具ｌＯを置き、その上に厚さ１’
ｉ’ＯＭのコイル台板５とコイル６を乗せて焼鈍した。In a conventional annealing furnace, the gap between the three sides of the hearth and the coil bed plate 50 is 2.
20, the base 7 is stopped, and the annealing furnace according to the present invention has an outer diameter of 550 mm and a height of 35 C1n+ on the upper surface of the hearth 3.
Place a columnar support lO made of heat-resistant steel with a thickness of 1' on top of it.
The i'OM coil base plate 5 and coil 6 were mounted and annealed.
この焼鈍のさい前記両焼鈍炉について、下段コイルのコ
イル外周上部（コイルの最高温部に相当する箇所）が１
１７０℃に到達してから、各時間後の該下段コイルのコ
イル内周中央部（コイルの最低温部に相当する箇所）と
の温度偏差を第１表に示す。During this annealing, in both annealing furnaces, the upper part of the outer periphery of the lower coil (corresponding to the highest temperature part of the coil)
Table 1 shows the temperature deviation between the lower coil and the central part of the inner circumference of the coil (corresponding to the lowest temperature part of the coil) at various times after reaching 170°C.
この第１表から本発明によると１１７０℃と云う高温の
焼鈍であっても、温度偏差が少なく効率的に加熱でき焼
鈍されることがわかる。From Table 1, it can be seen that according to the present invention, even when annealing is performed at a high temperature of 1170° C., the material can be heated efficiently and annealed with little temperature deviation.
第°１表Table 1
第１図は従来の直火式コイル焼鈍装置の説明図、第２図
は従来の他の直火式コイル焼鈍装置の説明図、第３図は
本発明の直火式コイル焼鈍装置の１例を示す説明図、第
４図は本発明の詳細な説明図である。
ｌ：炉体 ２：バーナ
３：炉床 ５：コイル台板１１：高さ方向
空間FIG. 1 is an explanatory diagram of a conventional direct-fired coil annealing device, FIG. 2 is an explanatory diagram of another conventional direct-fired coil annealing device, and FIG. 3 is an example of the direct-fired coil annealing device of the present invention. FIG. 4 is a detailed explanatory diagram of the present invention. l: Furnace body 2: Burner 3: Hearth 5: Coil base plate 11: Height space
Claims (1)
燃焼ガスによシレトルト内のコイルを加熱する焼鈍装置
において、コイルを載置したコイル台板の中央下部に柱
状支持具を設け、炉床面と前記コイル台板の間に３００
ｉｎ以上の高さ方向の空間を形成し、少なくとも一部
のバーナを前記空間の高さの範囲内に設けて、コイルｉ
ｌＯ’ｏｏ℃以上の高温にてカロ熱するようにしたこと
を特徴とする直火式コイル焼鈍装置。In an annealing apparatus in which a furnace body is provided with burners in one or multiple stages, and a coil in a retort is heated by combustion gas from the burner, a columnar support is provided at the lower center of a coil bed plate on which the coil is placed, and the furnace 300 mm between the floor and the coil base plate
A coil i is formed by forming a space in the height direction of at least 1 in, and at least some burners are provided within the height range of the space.
A direct-fired coil annealing device characterized by heating at a high temperature of 1O'oo°C or higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16102481A JPS5864323A (en) | 1981-10-12 | 1981-10-12 | Direct fire type coil annealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16102481A JPS5864323A (en) | 1981-10-12 | 1981-10-12 | Direct fire type coil annealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5864323A true JPS5864323A (en) | 1983-04-16 |
| JPS6216258B2 JPS6216258B2 (en) | 1987-04-11 |
Family
ID=15727131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16102481A Granted JPS5864323A (en) | 1981-10-12 | 1981-10-12 | Direct fire type coil annealing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5864323A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012520390A (en) * | 2009-03-13 | 2012-09-06 | エープナー−インドゥストリーオーフェンバウ ゲゼルシャフト ミット ベシュレンクテル ハフツング | High temperature furnace for annealing cores |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6467137A (en) * | 1987-09-05 | 1989-03-13 | Toshiteru Konishi | Apparatus for water culture |
| JPH0249850U (en) * | 1988-09-30 | 1990-04-06 |
-
1981
- 1981-10-12 JP JP16102481A patent/JPS5864323A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012520390A (en) * | 2009-03-13 | 2012-09-06 | エープナー−インドゥストリーオーフェンバウ ゲゼルシャフト ミット ベシュレンクテル ハフツング | High temperature furnace for annealing cores |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6216258B2 (en) | 1987-04-11 |
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