JPH066734B2 - Induction heating device temperature control method and device - Google Patents
Induction heating device temperature control method and deviceInfo
- Publication number
- JPH066734B2 JPH066734B2 JP63163394A JP16339488A JPH066734B2 JP H066734 B2 JPH066734 B2 JP H066734B2 JP 63163394 A JP63163394 A JP 63163394A JP 16339488 A JP16339488 A JP 16339488A JP H066734 B2 JPH066734 B2 JP H066734B2
- Authority
- JP
- Japan
- Prior art keywords
- induction heating
- heated
- temperature
- inert gas
- heating device
- 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 - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 title claims description 70
- 230000006698 induction Effects 0.000 title claims description 56
- 238000000034 method Methods 0.000 title claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 42
- 239000010959 steel Substances 0.000 claims description 42
- 239000011261 inert gas Substances 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 23
- 238000005192 partition Methods 0.000 claims description 23
- 239000011819 refractory material Substances 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- General Induction Heating (AREA)
- Control Of Heat Treatment Processes (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は誘導加熱装置の温度制御方法ならびにその装置
に係り、詳しくは加熱炉で加熱されたスラブ等の被加熱
材を更に高温に加熱する誘導加熱装置の温度制御する方
法において、誘導加熱を不活性ガス雰囲気で行なうとと
もにスラブ等の鋼片の長さ方向の温度分布を制御できる
誘導加熱装置の温度制御方法ならびにその装置に係る。TECHNICAL FIELD The present invention relates to a temperature control method for an induction heating apparatus and the apparatus therefor, and more specifically, to induction heating for heating a material to be heated such as a slab heated in a heating furnace to a higher temperature. The present invention relates to a method of controlling the temperature of an apparatus and a method of controlling the temperature of an induction heating apparatus capable of performing induction heating in an inert gas atmosphere and controlling the temperature distribution in the length direction of a steel slab such as a slab.
従来の技術 竪型誘導加熱装置は、スラブ等の鋼片を更に高温に加熱
するために、高周波誘導によって加熱する装置であっ
て、第４図に示す如く、構造上では、水平に巻かれた３
つの加熱誘導コイル２、３、４が上下に分けて配置さ
れ、各誘導コイルによる誘導加熱の程度によって鋼板１
１の上下方向（Ａ方向）の温度を制御するよう構成され
ている。なお、符号５、６、７は各誘導コイル２、３、
４への電力供給源である。しかし、この誘導加熱装置に
よると、電流の流れが均一でなく、鋼片１１の長手若し
くは長さ方向（Ｂ方向）の温度分布を制御することはで
きず、鋼片１１の長さ方向の温度分布が均一にならない
場合が多く品質上問題になっている。2. Description of the Related Art A vertical induction heating device is a device for heating steel slabs such as slabs to a higher temperature by high-frequency induction, and as shown in FIG. Three
The two heating induction coils 2, 3 and 4 are separately arranged in the upper and lower parts, and the steel plate 1 is formed according to the degree of induction heating by each induction coil.
1 is configured to control the temperature in the vertical direction (direction A). The reference numerals 5, 6, and 7 denote the induction coils 2, 3, and
4 is a power supply source. However, according to this induction heating device, the current flow is not uniform, the temperature distribution in the longitudinal or length direction (B direction) of the steel piece 11 cannot be controlled, and the temperature in the lengthwise direction of the steel piece 11 cannot be controlled. In many cases, the distribution is not uniform, which is a quality problem.
このような問題を解決するために、従来から誘導加熱装
置の炉内温度を制御する方法についてはいろいろ提案さ
れている。In order to solve such a problem, various methods for controlling the temperature inside the furnace of the induction heating device have been conventionally proposed.
例えば、特公昭５２−４７１７９号公報に示されるとこ
ろは、被加熱材の鋼片が誘導加熱コイルによってとりま
かれるように巻かれて誘導加熱コイルされる際に、鋼片
の厚さ（最短辺）方向の端面やそれら端面と側面との境
を成すコーナ部を耐火断熱材で被覆する方法である。For example, Japanese Patent Publication No. 52-47179 discloses that when a steel piece of a material to be heated is wound so as to be surrounded by an induction heating coil and is then induction heating coiled, the thickness of the steel piece (shortest side ) Direction end face and the corner part that forms the boundary between the end face and the side face is a method of coating with a refractory heat insulating material.
この方法によれば、電流浸透深さに較べて薄い厚さの薄
板スラブ鋼板のコーナ部や端面の温度定価の防止に一応
の効果が認められるが、耐火断熱材で被覆するだけでは
本質的にスラブ等の鋼片の温度制御方法を改善するもの
とは云えない。According to this method, a tentative effect is observed in preventing the temperature constant of the corners and end faces of the thin slab steel sheet having a thickness smaller than the current penetration depth, but it is essentially covered with a fireproof heat insulating material. It cannot be said that the method for controlling the temperature of steel slabs such as slabs is improved.
また、特公昭５２−４７１７８号公報に示されるところ
は、複数の電源にそれぞれ接続された複数コイルを用い
て被加熱材の鋼片を加熱する誘導加熱炉において、それ
ぞれのコイルによる加熱部分の温度を検出し、各電源の
周波数を異ならせることによって、その検出温度に応じ
て各コイルの出力を制御する方法である。Further, Japanese Patent Publication No. 52-47178 discloses that in an induction heating furnace for heating a steel slab of a material to be heated by using a plurality of coils respectively connected to a plurality of power sources, the temperature of a heating portion by each coil. Is detected and the frequency of each power supply is made different to control the output of each coil according to the detected temperature.
この方法は、各電源の周波数をかえて鋼片の温度低下す
る部分を積極的に加熱し、均熱化に要する時間を短縮し
ようとするものである。コイルの出力調整によるだけで
はスケール等の発生による外乱の影響が受けやすく、被
加熱材の鋼片の正確な温度測定ができないし、均一な温
度分布も得ることはできず、更に、鋼片の長手方向の温
度の均一化も達成できない。In this method, the frequency of each power source is changed to positively heat the temperature-decreasing portion of the steel slab to shorten the time required for soaking. Just adjusting the output of the coil is easily affected by disturbance due to the generation of scale, etc., it is not possible to accurately measure the temperature of the steel piece of the heated material, and it is not possible to obtain a uniform temperature distribution. It is also impossible to achieve uniform temperature in the longitudinal direction.
また、特開昭６２−１３５２６号公報に示されるところ
でも、鋼片等の被加熱材の幅方向の温度、つまり誘導加
熱炉で加熱される際は鋼片の上下方向の温度を制御でき
るに過ぎない。Also, as disclosed in Japanese Patent Laid-Open No. 62-13526, it is possible to control the widthwise temperature of a material to be heated such as a steel slab, that is, the temperature in the vertical direction of the steel slab when heated in an induction heating furnace. Not too much.
発明が解決しようとする課題 本発明はこれらの問題の解決を目的とし、具体的には、
従来例では誘導加熱装置内の被加熱材、例えば鋼片の温
度分布の正確な測定が難かしく、正確な温度が測定でき
ないこと、また、誘導加熱装置による加熱では出力制御
等の手段を用いても鋼片長さ方向の均一な温度分布が得
られないこと、また、鋼片の長さ方向の均一な温度分布
を得る研究開発が成されていない等の問題を解決した誘
導加熱装置の温度制御方法及びその装置を提案すること
を目的とする。The present invention aims to solve these problems, and specifically,
In the conventional example, it is difficult to accurately measure the temperature distribution of the material to be heated in the induction heating device, for example, the steel slab, and the accurate temperature cannot be measured.In addition, the heating by the induction heating device uses a means such as output control. The temperature control of the induction heating device solved the problems such as not being able to obtain a uniform temperature distribution in the length direction of the billet, and no research and development being done to obtain a uniform temperature distribution in the length direction of the billet. The aim is to propose a method and its device.
課題を解決するための手段ならびにその作用 すなわち、本発明は加熱炉で加熱された鋼片等の被加熱
材を更に高温に加熱する誘導加熱装置の温度制御方法に
おいて、この誘導加熱装置の誘導加熱コイル内側に設け
られた耐火材壁と被加熱材との間に形成される空間を、
被加熱材の長さ方向に沿って、複数の仕切り壁によって
仕切って、この仕切られた各空間に個別的に不活性ガス
を吹込み、この個別的に吹込まれる各不活性ガスの吹込
み量を調整して、被加熱材の長さ方向の温度を制御する
ことを特徴とする。Means for Solving the Problem and Its Action That is, the present invention is a method for controlling the temperature of an induction heating apparatus for heating a material to be heated such as a steel slab heated in a heating furnace to a higher temperature. The space formed between the refractory material wall provided inside the coil and the material to be heated,
Along the length direction of the material to be heated, it is partitioned by a plurality of partition walls, and an inert gas is individually blown into each of the partitioned spaces, and the respective inert gas blown individually is blown. It is characterized in that the temperature in the lengthwise direction of the material to be heated is controlled by adjusting the amount.
また、鋼片などの被加熱材を誘導加熱する竪型誘導加熱
装置において、この誘導加熱装置の誘導加熱コイルの内
側に設けられた耐火材壁と、この耐火材壁と被加熱材と
の間の空間を仕切り、被加熱材の長さ方向に沿って間隔
をおき設けられた複数の仕切り壁と、この仕切り壁によ
って仕切られた各空間に不活性ガスを個別的に供給する
供給口とを設けたことを特徴とする。Further, in a vertical induction heating device for induction heating a material to be heated such as steel slab, a refractory material wall provided inside an induction heating coil of the induction heating device and a space between the refractory material wall and the material to be heated. Partition space, a plurality of partition walls provided at intervals along the length of the material to be heated, and a supply port for individually supplying an inert gas to each space partitioned by the partition wall. It is characterized by being provided.
そこで、本発明の手段たる構成ならびに作用について、
更に具体的に説明する。Therefore, regarding the configuration and the action as the means of the present invention,
A more specific description will be given.
まず、誘導加熱炉などの加熱装置によって鋼片を加熱す
る場合に、従来例の温度制御方法では鋼片長手方向の均
一な温度分布が得られなかったが、このところについて
検討したところ、次のような条件を満たすことが必要で
あることがわかった。First, when heating the billet with a heating device such as an induction heating furnace, the temperature control method of the conventional example did not provide a uniform temperature distribution in the longitudinal direction of the billet. It turns out that it is necessary to meet such conditions.
（１）誘導加熱中スケール等の発生により外乱を受けな
いような雰囲気で加熱し、しかも、温度を正確に測定で
きること。(1) Induction heating During heating in an atmosphere that is not disturbed by the generation of scales, etc., and the temperature can be measured accurately.
（２）鋼片の先端部及び後端部が中央部に較べて冷え易
いため、中央部の温度を低下させ温度差を少なくするこ
と。(2) Since the front end and the rear end of the steel slab are easier to cool than the central part, the temperature of the central part should be lowered to reduce the temperature difference.
（３）局部的な高温部の発生をなくすこと、 等であった。(3) Elimination of the occurrence of localized high temperature parts.
更に、進んで、このような条件を満足する誘導加熱装置
の操作条件を研究した。Furthermore, we proceeded to study the operating conditions of the induction heating device that satisfied these conditions.
すなわち、本発明者の研究結果によれば、誘導加熱する
際には、雰囲気ガスの温度を鋼片温度より低くし、雰囲
気は不活性ガス雰囲気としてスケール等の発生を防止
し、温度制御に不活性ガス流量を調節するのがよいこと
がわかった。That is, according to the research results of the present inventor, during induction heating, the temperature of the atmosphere gas is made lower than the billet temperature, and the atmosphere is an inert gas atmosphere to prevent the generation of scales, etc. It has been found to be good to adjust the active gas flow rate.
以下図面により、更に本発明を詳しく説明する。The present invention will be described in more detail with reference to the drawings.
なお、第１図は本発明法を実施する際に用いられる誘導
加熱装置の一例の要部を示す説明図であり、第２図は他
の実施例の誘導加熱装置の説明図であり、第３図におい
て（ａ）は従来例の誘導加熱装置で鋼片で加熱した場合
の鋼片長手方向の温度分布を示すグラフであり、（ｂ）
は本発明法を用いた加熱した場合の鋼片長手方向の温度
分布を示すグラフであり、第４図は従来例の誘導加熱装
置の説明図である。In addition, FIG. 1 is an explanatory view showing a main part of an example of an induction heating apparatus used when carrying out the method of the present invention, and FIG. 2 is an explanatory view of an induction heating apparatus of another embodiment. FIG. 3 (a) is a graph showing a temperature distribution in the longitudinal direction of the billet when the billet is heated by the conventional induction heating device, and FIG.
Is a graph showing the temperature distribution in the longitudinal direction of the steel slab when heated using the method of the present invention, and FIG. 4 is an explanatory view of an induction heating device of a conventional example.
まず、第１図において、符号２、３、４は加熱誘導コイ
ルを示し、これら各コイルは、水平方向に巻かれ、且
つ、上下方向に３個のブロックに分けられ、これらコイ
ル２、３、４によって内部の鋼片１１が誘導加熱され
る。コイル２、３、４の内側に耐火材壁８ａ、８ｂが設
けられ、誘導加熱すべき鋼片１１は耐火材壁８ａ、８ｂ
の間に収容される。First, in FIG. 1, reference numerals 2, 3, and 4 represent heating induction coils. These coils are wound in the horizontal direction and divided into three blocks in the vertical direction. The steel billet 11 inside is induction heated by 4. Refractory walls 8a and 8b are provided inside the coils 2, 3 and 4, and the steel slab 11 to be induction-heated is refractory walls 8a and 8b.
Housed in between.
次に、鋼片１１とその両側の耐火材壁８ａ、８ｂとの間
において、この間を鋼片１１の長さ方向に仕切るため、
両耐火材壁８ａ、８ｂの内側から鋼片１１に向って仕切
り壁９ａ、９ｂを突き出し、この仕切り壁９ａ、９ｂに
よって鋼片１１と耐火材壁９ａ、９ｂとの間の空間を分
割して仕切る。この仕切られた各空間には不活性ガスの
供給口１０を設け、この供給口１０は耐火材壁８ａ、８
ｂの上部及び／または下部にも設け、仕切り壁９によっ
て仕切られた各空間にそれぞれ供給口１０から不活性ガ
スが供給される。Next, between the steel slab 11 and the refractory material walls 8a and 8b on both sides thereof, in order to partition the space in the length direction of the steel slab 11,
The partition walls 9a and 9b are projected from the inside of both the fireproof material walls 8a and 8b toward the steel piece 11, and the space between the steel piece 11 and the fireproof material walls 9a and 9b is divided by the partition walls 9a and 9b. Partition. An inert gas supply port 10 is provided in each of the partitioned spaces, and the supply port 10 is connected to the refractory material walls 8a, 8a.
An inert gas is supplied from each supply port 10 to each space partitioned by the partition wall 9 also at the upper part and / or the lower part of b.
なお、仕切り壁９ａ、９ｂは、第１図に示すように、耐
火材壁８ａ、８ｂに対し垂直に設けるのが好ましい。The partition walls 9a and 9b are preferably provided vertically to the refractory material walls 8a and 8b, as shown in FIG.
そこで、以上の構成の誘導加熱装置に鋼片１１を入れ、
鋼片１１を更に誘導加熱する場合、供給口１０から不活
性ガスを仕切り壁９ａ、９ｂによって仕切られた各空間
に吹込み、とくに、供給される不活性ガスの温度は鋼片
１１の温度より低くする。この際、各空間に吹込まれる
不活性ガスの吹込流量を、鋼片１１の長さ方向に沿って
中央部附近と先後の両端部附近の各領域の温度分布に応
じて換える。このように制御すると、鋼片１１の長さ方
向の温度は制御でき、局部的な高温の発生を防止するこ
とができる。Therefore, the steel piece 11 is put in the induction heating device having the above configuration,
When the steel piece 11 is further induction-heated, an inert gas is blown into each space partitioned by the partition walls 9a and 9b from the supply port 10, and in particular, the temperature of the supplied inert gas is higher than the temperature of the steel piece 11. make low. At this time, the flow rate of the inert gas blown into each space is changed according to the temperature distribution in each region along the length direction of the steel slab 11 near the central part and near both front and rear ends. By controlling in this way, the temperature of the steel slab 11 in the lengthwise direction can be controlled, and local high temperature can be prevented from occurring.
上記のように仕切り壁９を設けるときに、多数設けて空
間を更に分割して仕切ると、鋼片１１はその長さ方向に
わたって精密に温度制御できる。When the partition wall 9 is provided as described above, if a large number is provided and the space is further divided into partitions, the temperature of the steel slab 11 can be precisely controlled in the length direction thereof.
また、吹込まれる雰囲気ガスは不活性ガスであるため、
誘導加熱の雰囲気を不活性雰囲気となり、スケール生成
を抑制することができ温度測定も正確にできる。Also, since the atmospheric gas blown in is an inert gas,
The induction heating atmosphere becomes an inert atmosphere, the generation of scale can be suppressed, and the temperature can be measured accurately.
また、第２図に示す実施例は、仕切り壁９ａ、９ｂ、９
ｃ、９ｄによって鋼片１１と両側の耐火材壁８ａ、８ｂ
との間の空間を、鋼片１１の長さ方向に沿って３分割さ
れたものである。更に、耐火材壁８ａ、８ｂの下方には
複数個の不活性ガスの供給口１０ａ、１０ｂ、１０ｃ、
１０ｄを設ける。例えば、鋼片１１の周囲で仕切り壁９
ａ、９ｂ、９ｃ、９ｄで仕切られる各空間、つまり、先
端の空間には供給口１０ａから不活性ガスＮ２（Ｉ）が
送られ、中央の左右空間には供給口１０ｂ、１０ｃから
不活性ガスＮ２（II）、Ｎ２（III）が送られ、後端の
空間には供給口１０ｄから不活性ガスＮ２（IV）が送ら
れる。Further, the embodiment shown in FIG. 2 has partition walls 9a, 9b, 9
c and 9d, steel slab 11 and refractory walls 8a and 8b on both sides
The space between and is divided into three along the length direction of the steel slab 11. Further, a plurality of inert gas supply ports 10a, 10b, 10c are provided below the refractory material walls 8a, 8b.
10d is provided. For example, the partition wall 9 around the billet 11
Inert gas N 2 (I) is sent from the supply port 10a to each space partitioned by a, 9b, 9c, and 9d, that is, the space at the tip, and inert gas is supplied from the supply ports 10b and 10c to the central left and right spaces. Gases N 2 (II) and N 2 (III) are sent, and an inert gas N 2 (IV) is sent to the space at the rear end from the supply port 10d.
このように仕切り壁９ａ、９ｂ、９ｃ、９ｄで３分割し
た場合、中央部に較べて冷え易い先端部及び後端部であ
っても、不活性ガスの吹込み流量を鋼片１１の先端部及
び後端部を含む領域の空間には、中央の空間より、少な
くすることができるため、中央部の冷却能力を低くする
ことができる。When the partition walls 9a, 9b, 9c, and 9d are divided into three parts in this way, the blowing flow rate of the inert gas can be controlled even at the front end and the rear end, which are easier to cool than the central part. Since the space in the region including the rear end portion can be made smaller than the space in the central portion, the cooling capacity in the central portion can be lowered.
第２図に示す誘導加熱装置と従来例の誘導加熱装置とで
鋼片を誘導加熱した結果を示すと、第３図に示す通りの
結果が得られた。When the results of induction heating of the steel pieces by the induction heating device shown in FIG. 2 and the induction heating device of the conventional example are shown, the results shown in FIG. 3 were obtained.
すなわち、第３図において、（ａ）は従来例を示し仕切
り壁や不活性ガスを用いない場合、（ｂ）は本発明法
で、不活性ガスとしてＮ２ガスを用い、その流量をＮ２
（Ｉ）、Ｎ２（IV）において多くし、Ｎ２（II）、Ｎ２
（III）において少なくした場合の温度分布を示すグラ
フである。That is, in FIG. 3, (a) shows a conventional example, and when a partition wall or an inert gas is not used, (b) is the method of the present invention, in which N 2 gas is used as the inert gas and the flow rate is N 2
(I), N 2 (IV), and N 2 (II), N 2
It is a graph which shows temperature distribution when it reduces in (III).
第３図から明らかなように、本発明法による場合は従来
例による場合に較べて鋼片の温度分布のバラツキが少な
く、特に先端部及び後端部の温度が上昇しており、本発
明法が優れていることがわかる。As is apparent from FIG. 3, in the case of the method of the present invention, the variation in the temperature distribution of the steel slab is smaller than that in the case of the conventional example, and particularly the temperature of the front end portion and the rear end portion rises. It turns out that is excellent.
以上、本発明について、第１図及び第２図に示すことに
より説明したが、本発明はこれに拘束されるものではな
く、仕切り壁の数は目的とする温度分布に応じて、適当
な数が選択される。The present invention has been described above with reference to FIGS. 1 and 2, but the present invention is not limited to this, and the number of partition walls is an appropriate number depending on the target temperature distribution. Is selected.
また、不活性ガスの温度は常温以上であればよいが、余
り高温であると冷却能力が与えることができないため、
誘導加熱炉の雰囲気温度以下とすることが望ましい。The temperature of the inert gas may be room temperature or higher, but if the temperature is too high, the cooling capacity cannot be provided.
It is desirable to keep the temperature below the ambient temperature of the induction heating furnace.
また、流量は誘導加熱鋼材の温度と不活性ガスの温度に
よって決定することができる。The flow rate can be determined by the temperature of the induction heating steel material and the temperature of the inert gas.
＜発明の効果＞ 以上、説明したように、本発明においては、誘導加熱装
置内の空間を、加熱すべき鋼片の長さ方向に沿って、仕
切り壁によって仕切り、この仕切られる空間に個別的に
N2ガス等の不活性ガスを吹込み、この吹込み量を調整し
て、鋼片長さ方向の温度を制御する。<Effects of the Invention> As described above, in the present invention, the space inside the induction heating device is partitioned by the partition wall along the length direction of the steel slab to be heated, and each space is individually partitioned. To
An inert gas such as N 2 gas is blown, and the amount of this blow is adjusted to control the temperature in the length direction of the billet.
また、吹込みガスは不活性ガスであるから、加熱中にス
ケール等の発生がなく、外乱の影響を受けることがな
く、温度センサによっても正確に温度が測定でき、温度
の制御が正確にしかも容易に行なうことができる。Further, since the blown gas is an inert gas, no scale or the like is generated during heating, it is not affected by disturbance, and the temperature can be accurately measured by the temperature sensor, and the temperature can be accurately controlled. It can be done easily.
第１図は本発明を実施する際に用いられる誘導加熱装置
の一例の要部を示す説明図、第２図は他の実施例の誘導
加熱装置の説明図、第３図において（ａ）は従来例の誘
導加熱装置で鋼片を加熱した場合の鋼片長手方向の温度
分布を示すグラフ、（ｂ）は本発明法を用いた加熱した
場合の鋼片長手方向の温度分布を示すグラフ、第４図は
従来例の誘導加熱装置の説明図である。 符号１……誘導加熱装置 ２、３、４……加熱コイル ５、６、７……電力供給源 ８……耐火材壁 ９……仕切り壁 １０……不活性ガスの供給口 １１……鋼片 Ａ……鋼片巾方向 Ｂ……鋼片長さ方向 Ｎ２（Ｉ）、Ｎ２（II）、Ｎ２（III）、Ｎ２（IV）…
…Ｎ２ガス流量FIG. 1 is an explanatory view showing an essential part of an example of an induction heating apparatus used for carrying out the present invention, FIG. 2 is an explanatory view of an induction heating apparatus of another embodiment, and FIG. The graph which shows the temperature distribution of the billet longitudinal direction at the time of heating the billet with the induction heating device of the prior art example, (b) the graph which shows the temperature distribution of the billet longitudinal direction at the time of heating using the method of the present invention, FIG. 4 is an explanatory view of a conventional induction heating device. Reference numeral 1 ... Induction heating device 2, 3, 4 ... Heating coil 5, 6, 7 ... Electric power supply source 8 ... Refractory material wall 9 ... Partition wall 10 ... Inert gas supply port 11 ... Steel Piece A: Steel piece width direction B: Steel piece length direction N 2 (I), N 2 (II), N 2 (III), N 2 (IV) ...
... N 2 gas flow rate
Claims (2)
に高温に加熱する誘導加熱装置の温度制御方法におい
て、この誘導加熱装置の誘導加熱コイル内側に設けられ
た耐火材壁と前記被加熱材との間に形成される空間を、
前記被加熱材の長さ方向に沿って、複数の仕切り壁によ
って仕切って、この仕切られた各空間に個別的に不活性
ガスを吹込み、この個別的に吹込まれる各吹活性ガスの
吹込み量を調整して、前記被加熱材の長さ方向の温度を
制御することを特徴とする誘導加熱装置の温度制御方
法。1. A temperature control method for an induction heating apparatus for heating a material to be heated such as a steel slab heated in a heating furnace to a higher temperature, comprising a refractory material wall provided inside an induction heating coil of the induction heating apparatus. The space formed between the heated material,
Along the length direction of the material to be heated, it is partitioned by a plurality of partition walls, and an inert gas is individually blown into each of the partitioned spaces, and the blowing of each blowing active gas is performed individually. A temperature control method for an induction heating device, comprising controlling the temperature in the lengthwise direction of the material to be heated by adjusting the amount of inclusion.
導加熱装置において、この誘導加熱装置の誘導加熱コイ
ルの内側に設けられた耐火材壁と、この耐火材壁と被加
熱材との間の空間を仕切り、前記被加熱材の長さ方向に
沿って間隔をおき設けられた複数の仕切り壁と、この仕
切り壁によって仕切られた各空間に不活性ガスを個別的
に供給する供給口とを設けたことを特徴とする誘導加熱
装置。2. A vertical induction heating apparatus for inductively heating a material to be heated such as a steel slab, a refractory material wall provided inside an induction heating coil of the induction heating apparatus, the refractory material wall and the material to be heated. And a plurality of partition walls provided at intervals along the length direction of the material to be heated, and an inert gas is individually supplied to each space partitioned by the partition walls. An induction heating device comprising a supply port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63163394A JPH066734B2 (en) | 1988-06-30 | 1988-06-30 | Induction heating device temperature control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63163394A JPH066734B2 (en) | 1988-06-30 | 1988-06-30 | Induction heating device temperature control method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0211717A JPH0211717A (en) | 1990-01-16 |
| JPH066734B2 true JPH066734B2 (en) | 1994-01-26 |
Family
ID=15773055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63163394A Expired - Lifetime JPH066734B2 (en) | 1988-06-30 | 1988-06-30 | Induction heating device temperature control method and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH066734B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2723161B2 (en) * | 1993-01-27 | 1998-03-09 | 川崎製鉄株式会社 | Atmosphere control method for vertical induction heating furnace |
| CN102618703A (en) * | 2012-03-26 | 2012-08-01 | 宝山钢铁股份有限公司 | Method and device for rapid high-temperature heating of plates |
-
1988
- 1988-06-30 JP JP63163394A patent/JPH066734B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0211717A (en) | 1990-01-16 |
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