JPH0211717A - Method and device for controlling temperature in induction heating apparatus - Google Patents
Method and device for controlling temperature in induction heating apparatusInfo
- Publication number
- JPH0211717A JPH0211717A JP63163394A JP16339488A JPH0211717A JP H0211717 A JPH0211717 A JP H0211717A JP 63163394 A JP63163394 A JP 63163394A JP 16339488 A JP16339488 A JP 16339488A JP H0211717 A JPH0211717 A JP H0211717A
- Authority
- JP
- Japan
- Prior art keywords
- induction heating
- slab
- longitudinal direction
- temp
- temperature
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 82
- 230000006698 induction Effects 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- 239000011261 inert gas Substances 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000005192 partition Methods 0.000 claims description 27
- 238000007664 blowing Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000011160 research Methods 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010409 thin film Substances 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
- Control Of Heat Treatment Processes (AREA)
- General Induction Heating (AREA)
Abstract
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手方向の温度分布を前記不活性
ガス吹込み量調整により制御す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。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a temperature control method for an induction heating device and its device, and specifically relates to induction heating for heating a material to be heated, such as a slab, heated in a heating furnace to a higher temperature. A method for controlling the temperature of an induction heating device, which performs induction heating in an inert gas atmosphere and controls the temperature distribution in the longitudinal direction of a steel piece such as a slab by adjusting the amount of inert gas blown into the device, and the method thereof. Related to equipment.
従来技術
堅型誘導加熱装置はスラブ等の鋼を高温に加熱するため
に用いられる高周波電流による加熱装置であって、第４
図に示す如く、構造上加熱コイル２．３．４は水平方向
に巻き、上下方向に数個のコイルブロックに分けて鋼片
の上下方向の温度を制御するよう構成されている。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、鋼片の長手方向（Ｂ方向）の温度分布を制御するこ
とはできず、またこの加熱方法では鋼片の長さ方向の温
度分布は均一でない場合が多く品質上問題となっている
。A conventional rigid induction heating device is a heating device using high frequency current used to heat steel such as a slab to a high temperature.
As shown in the figure, the heating coil 2.3.4 is structurally wound horizontally and divided into several coil blocks in the vertical direction to control the temperature of the steel piece in the vertical direction. However, according to this induction heating device, the current flow is not uniform, and the temperature distribution in the longitudinal direction (B direction) of the steel piece cannot be controlled. The distribution is often not uniform, causing quality problems.
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い提案
されている。In order to solve these problems, various methods have been proposed for controlling the temperature inside the furnace of an induction heating device.
例えば、特公昭５２−４７１７９号公報に示される如く
、被加熱部材をとりまくように巻かれた誘導加熱コイル
を有するものにおいて、上記被加熱部材の厚さ（最短辺
）の面及びそれに隣接する加熱コイルの巻かれている面
の端部の一部を耐火断熱材で被覆する方法がある。For example, as shown in Japanese Patent Publication No. 52-47179, in a device having an induction heating coil wound around a member to be heated, heating is performed on a surface of the thickness (shortest side) of the member to be heated and adjacent thereto. There is a method of covering a part of the end of the surface where the coil is wound with a fireproof heat insulating material.
この方法によれば、電流浸透深さに較べて厚さの薄い薄
板スラブのかど部及び厚さ部分の温度低下の防止効果は
一応認められるが、耐火断熱材を設けるだけでは本質的
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, the effect of preventing the temperature drop in the corners and thick parts of the thin plate slab, which is thin compared to the current penetration depth, can be recognized, but if only the refractory insulation is provided, the slab It cannot be said that this method improves the method of controlling the temperature of steel slabs.
また、特公昭５２−４７１７８号公報に示す如く、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
材を加熱する誘導加熱炉において、上記各電源の周波数
を異ならせるとともに、上記それぞれのコイルによる加
熱部分の温度を検出し、その温度に応じて各コイルの出
力を制御する方法がある。Furthermore, as shown in Japanese Patent Publication No. 52-47178, in an induction heating furnace that heats a material using multiple coils connected to multiple power sources, the frequencies of the power sources are different, and the frequencies of each of the power sources are different. There is a method of detecting the temperature of the heated portion by the coil and controlling 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被加熱材の温度低
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が、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、被加熱材の正確な温度測定ができず均一な温度分
布のものを得ることはできず、また、長手方向の均一化
はできない。さらに、特開昭６２−１３５２６号公報に
示されるものも、スラブ等の被加熱材の幅方向の温度を
制御するものに限られる。In this method, the frequency of each power source is changed to actively heat the parts of the material to be heated where the temperature drops, thereby shortening the time required to equalize the temperature. is susceptible to disturbances caused by scale, etc., cannot accurately measure the temperature of the heated material, cannot obtain a uniform temperature distribution, and cannot achieve uniformity in the longitudinal direction. Further, the method disclosed in Japanese Patent Application Laid-Open No. 62-13526 is also limited to one that controls the temperature in the width direction of a material to be heated such as a slab.
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手方向の均一な温度分布が得
られないこと、また、鋼片の長手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。Problems to be Solved by the Invention The present invention aims to solve these problems, and specifically,
In conventional methods, it is difficult to accurately measure the temperature distribution of the material to be heated, such as a steel billet, in an induction heating device, and accurate temperature measurements cannot be made. A temperature control method for induction heating equipment that solves problems such as the inability to obtain a uniform temperature distribution in the longitudinal direction of a steel billet, and the lack of research and development to achieve a uniform temperature distribution in the longitudinal direction of a steel billet. The purpose is to propose a system 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方法
において、前記加熱雰囲気を不活性ガス雰囲気として誘
導加熱するとともに誘導加熱コイル内側の耐火材壁の長
手方向に複数の仕切りを設け、誘導加熱に伴う前記被加
熱材の長手方向温度分布を前記仕切り壁毎に不活性ガス
の吹込み量を調整して制御することを特徴とし、また、
スラブ等の鋼片を加熱する堅型誘導加熱装置において、
前記加熱装置のコイルの内側に耐火材壁とこの耐火材壁
の長手方向に複数の仕切り壁とこの仕切り壁間に不活性
ガスを供給する吹出口とを設けたことを特徴とする。Means for Solving the Problems and Their Effects Namely, the present invention provides a temperature control method for an induction heating device that heats a material to be heated, such as a slab, heated in a heating furnace to a higher temperature, by changing the heating atmosphere to an inert gas atmosphere. At the same time as induction heating, a plurality of partitions are provided in the longitudinal direction of the refractory wall inside the induction heating coil, and the temperature distribution in the longitudinal direction of the material to be heated due to induction heating is controlled by controlling the amount of inert gas blown into each partition wall. It is characterized by adjusting and controlling, and
In a rigid induction heating device that heats steel pieces such as slabs,
The heating device is characterized in that a refractory wall, a plurality of partition walls in the longitudinal direction of the refractory wall, and an outlet for supplying inert gas between the partition walls are provided inside the coil of the heating device.
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 operation of the means of the present invention,
This will be explained more specifically.
本発明は誘導加熱装置により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
が得られないことについて検討したところ、次のような
条件を満たすものであることが必要であることがわかっ
た。The present invention satisfies the following conditions after studying the fact that when a steel billet is heated by an induction heating device, a uniform temperature distribution in the longitudinal direction of the steel billet cannot be obtained with conventional temperature control methods. It turns out that something is necessary.
（１）スケール等の外乱を受けないような雰囲気で加熱
し、温度を正確に測定できるようにすること。(1) To be able to accurately measure temperature by heating in an atmosphere that is not affected by disturbances such as scales.
（２）鋼片の先端部及び後端部が中央に較べて冷え易い
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 tip and rear ends of the steel piece are more likely to cool down than the center, the temperature at the center 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
・
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、この研究に基づいて本発明は成立
したものである。本発明者の研究結果によれば誘導加熱
方法においては雰囲気ガスの温度が鋼片温度より低く、
また、不活性ガスがスケール等の発生を防止することが
できるので、鋼片の誘導加熱の際に、雰囲気ガスとして
不活性ガスを用い、温度制御に不活性ガス流量を調節す
ればよいということがわがった。(3) Eliminate the occurrence of localized high-temperature areas, etc.Furthermore, we proceeded to research operating conditions for induction heating devices that satisfy these conditions, and based on this research, we established the present invention. This is what I did. According to the research results of the present inventor, in the induction heating method, the temperature of the atmospheric gas is lower than the temperature of the steel billet;
In addition, since inert gas can prevent the generation of scale, etc., it is sufficient to use inert gas as the atmospheric gas when induction heating a steel billet and adjust the inert gas flow rate to control the temperature. I got angry.
以下図面により、更に本発明の詳細な説明する。The present invention will be further explained in detail below with reference to the drawings.
尚、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図は本発
明の他の実施例に用いられる誘導加熱装置の説明図であ
り、第３図（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温度分布を示すグラフであり、
第３図（ｂ）は本発明法を用いた加熱した場合の長手方
向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。Incidentally, FIG. 1 is an explanatory diagram showing the main parts of an example of an induction heating device used when implementing the method of the present invention, and FIG. 2 is an explanatory diagram of an induction heating device used in another embodiment of the present invention. FIG. 3(a) is a graph showing the temperature distribution in the longitudinal direction of a steel billet when the billet is heated with a conventional induction heating device,
FIG. 3(b) is a graph showing the longitudinal temperature distribution in the case of heating using the method of the present invention, and FIG. 4 is an explanatory diagram of a conventional induction heating apparatus.
まず、第１図において、誘導加熱装置は、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た加
熱コイル２．３．４と、このコイルの内側（鋼片側）に
耐火材壁８と鋼片に対して左右の長手方向の耐火材壁８
ａ、８ｂからコイル２．３．４の内側（鋼片１１）に突
き出した仕切り壁９ａ、９ｂとこの仕切り壁９ａ、９ｂ
により仕切られた各空間に不活性ガスを投入する吹出口
１０を耐火材壁８ａ、８ｂの上部及び／または下部に設
けて構成したものである。尚、仕切り壁９ａ、９ｂは、
第１図のように誘導加熱装置の耐火材壁８ａ、８ｂに対
してと同様の長さでしかも垂直に設けたものが好ましい
が、必ずしもこれに拘束されるものではない。この誘導
加熱装置に鋼片を入れ、鋼片を高温に加熱する場合、不
活性ガスの吹出口１０より、鋼片１１の温度より低い不
活性ガスを供給するとともにその吹込流量を鋼片１１の
中心附近と先後両端部附近の各領域の温度分布に応じて
換えることにより、鋼片の長手方向の温度を制御するこ
とができ、局部的な高温部の温度の発生も防止すること
ができる。従って、前記仕切り壁９を多数設けることに
より、鋼片長手方向の精密な温度制御ができることにな
る。First, in Fig. 1, the induction heating device consists of a heating coil 2.3.4 that is wound horizontally and divided into three blocks vertically, and a fireproof structure inside the coil (on one side of the steel). Refractory wall 8 in the longitudinal direction on the left and right with respect to the timber wall 8 and the steel piece
Partition walls 9a, 9b protruding from a, 8b to the inside of the coil 2.3.4 (steel piece 11) and the partition walls 9a, 9b
A blower outlet 10 for injecting inert gas into each space partitioned by is provided at the upper and/or lower part of the refractory walls 8a, 8b. In addition, the partition walls 9a and 9b are
As shown in FIG. 1, it is preferable to have the same length as the refractory walls 8a, 8b of the induction heating device, and to provide them perpendicularly, but this is not necessarily the case. When a steel billet is placed in this induction heating device and heated to a high temperature, an inert gas whose temperature is lower than that of the steel billet 11 is supplied from the inert gas outlet 10, and the flow rate of the inert gas is adjusted to the temperature of the steel billet 11. By changing the temperature in accordance with the temperature distribution in each region near the center and near both front and rear ends, the temperature in the longitudinal direction of the steel slab can be controlled, and it is also possible to prevent the temperature from forming in localized high temperature parts. Therefore, by providing a large number of partition walls 9, precise temperature control in the longitudinal direction of the steel piece can be achieved.
また、加熱雰囲気を不活性雰囲気とすることにより、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
る効果がある。Furthermore, by setting the heating atmosphere to be an inert atmosphere, scale formation can be suppressed and temperature measurement can be performed accurately.
第２図の実施例は仕切壁を堅型誘導加熱装置加熱装置の
長手方向を３分割するように鋼片の長手方向に対し、左
右の耐火材壁にそれぞれ２細膜けたものであり、更に、
仕切り壁間の耐火壁８ａ、８ｂの下方には不活性ガスの
吹出口１０を複数個、例えば、左右の耐火材壁９ａ、９
ｂ、９Ｃ１９ｄの間に形成される空間部にそれぞれ２個
、仕切り壁９ａ、９ｂ、９ｃ、９ｄの外側に形成される
空間部にそれぞれ１個を設けて構成したものである。こ
のように誘導加熱装置の長手方向を仕切り壁で３分割し
た場合、従来例の加熱では鋼片の温度が先端部及び後端
部が中央部に較べて冷え易い傾向があるが、不活性ガス
の吹込み流量を先端部及び後端部を含む領域の空間部に
は中央の全間部領域より、少なくすることができるため
、中央部の冷却能力を一層向上させるという効果がある
。In the embodiment shown in Fig. 2, two thin films are provided on each of the left and right refractory walls in the longitudinal direction of the steel slab so that the partition wall is divided into three parts in the longitudinal direction of the heating device by a rigid induction heating device. ,
A plurality of inert gas outlets 10 are provided below the fireproof walls 8a and 8b between the partition walls, for example, the left and right fireproof walls 9a and 9
Two pieces are provided in each of the spaces formed between the partition walls 9a, 9c, and 19d, and one piece is provided in each of the spaces formed outside the partition walls 9a, 9b, 9c, and 9d. When the induction heating device is divided into three parts in the longitudinal direction by a partition wall, the tip and rear ends tend to be colder than the center in conventional heating, but inert gas Since the blowing flow rate can be made smaller in the space including the front end and the rear end than in the entire center region, there is an effect of further improving the cooling capacity of the center.
第３図に第２図に示す誘導加熱装置により、加熱処理し
た結果を示す。FIG. 3 shows the results of heat treatment using the induction heating apparatus shown in FIG. 2.
なお、第３図は（ａ）は従来例の仕切り壁及び不活性ガ
スを用いない場合、（ｂ）は本発明の仕切り壁を設け、
不活性ガスとしてＮ２ガスを用い、その流量をＮ２（Ｉ
）、 Ｎ２ （ＩＶ）において少なく、Ｎ２ （Ｉ
Ｉ）、Ｎ２ （ＩＩＩ）において多くした場合の粗ミ
ル出側の鋼片長さ方向の温度分布を示すグラフである。In addition, in FIG. 3, (a) is a case where the conventional partition wall and inert gas are not used, and (b) is a case where the partition wall of the present invention is provided,
N2 gas is used as the inert gas, and its flow rate is set to N2 (I
), less in N2 (IV) and less in N2 (I
1) is a graph showing the temperature distribution in the longitudinal direction of the steel billet on the exit side of the rough mill when increasing N2 (III).
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 clear from the figure, when using the method of the present invention, there is less variation in the temperature distribution of the steel slab than when using the conventional method.
In particular, the temperature at the leading end and trailing end increased, indicating that the method of the present invention is superior.
以上、本発明の実施例を第１図及び第２図により、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。Although the embodiments of the present invention have been described above with reference to FIGS. 1 and 2, the present invention is not limited thereto, and the number of partition walls may be 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。In addition, the temperature of the inert gas should be above room temperature, but if it is too high, it will not be able to provide cooling capacity.
It is desirable that the temperature be lower than 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。Moreover, the flow rate can be determined by the temperature of the induction heated 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
度制御方法において、前記加熱雰囲気を不活性ガス雰囲
気として誘導加熱するとともに誘導加熱コイル内側の耐
火材壁の長手方向に複製の仕切り壁を設け、誘導加熱に
伴う前記被加熱材の長手方向温度分布を前記仕切り壁毎
に不活性ガスの吹込み量調整して制御することを特徴と
し、またスラブ等の鋼片を加熱する堅型誘導加熱装置に
おいて、前記加熱装置のコイルの内側に耐火材壁とこの
耐火材壁の長手方向に複数の仕切り壁とこの仕切り壁間
に不活性ガスを供給する吹出口とを設けたことを特徴と
するものである。<Effects of the Invention> As explained above, the present invention provides a temperature control method for an induction heating device that heats a material to be heated, such as a slab, heated in a heating furnace to a higher temperature, by changing the heating atmosphere to an inert gas atmosphere. Along with induction heating, a duplicate partition wall is provided in the longitudinal direction of the refractory wall inside the induction heating coil, and the amount of inert gas blown into each partition wall is adjusted to adjust the temperature distribution in the longitudinal direction of the material to be heated due to induction heating. In a rigid induction heating device for heating steel pieces such as slabs, the heating device includes a refractory wall inside the coil and a plurality of partition walls in the longitudinal direction of the refractory wall. The device is characterized in that a blower outlet for supplying inert gas is provided between the partition walls.
従って、従来例の誘導加熱装置内に仕切り壁を設け、こ
の仕切り壁で形成される空間部にＮ２ガス等の不活性ガ
スを適切な量配分で投入するようにしたため、不活性ガ
スによる放熱効果により、鋼片長さ方向の温度が均一に
制御することが可能である。Therefore, by providing a partition wall in the conventional induction heating device and injecting an appropriate amount of inert gas such as N2 gas into the space formed by this partition wall, the heat dissipation effect of the inert gas is improved. This makes it possible to uniformly control the temperature in the longitudinal direction of the steel billet.
また、不活性ガスにより、温度制御するため加熱中にス
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。In addition, since the temperature is controlled using an inert gas, no scale is generated during heating, and it is not affected by external disturbances.The temperature can also be measured accurately using a temperature sensor, making temperature control accurate and easy. can be done.
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、第２図は、本発明の他
の実施例に用いられる誘導加熱装置の説明図、第３図（
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第３図（ｂ）は第２
図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、第４図は従来例の誘導加熱装
置の説明図である。
符号］・・・誘導加熱装置
２．３．４・・・加熱コイル
５．６．７・・・電力供給原
８・・・耐火材壁
９・・・仕切り壁
１０・・・不活性ガス
１１・・・鋼片
Ａ・・・鋼片巾方向
Ｂ・・・鋼片長さ方向
Ｎ２ （Ｉ）、Ｎ２ （ＩＩ）、Ｎ２ （ＩＩＩ
）、Ｎ２ （ｆＶ）・・・Ｎ２ガス流量
特許出願人 川崎製鉄株式会社FIG. 1 is an explanatory diagram showing the main parts of an example of an induction heating device used when carrying out the method of the present invention, FIG. 2 is an explanatory diagram of an induction heating device used in another embodiment of the present invention, Figure 3 (
Figure 3 (b) is a graph showing the temperature distribution in the longitudinal direction of a steel piece when the steel piece is heated with a conventional induction heating device.
FIG. 4 is a graph showing the temperature distribution in the longitudinal direction of a steel billet when a steel billet is heated with the induction heating device shown in the figure, and FIG. 4 is an explanatory diagram of a conventional induction heating device. Code]...Induction heating device 2.3.4...Heating coil 5.6.7...Power supply source 8...Refractory wall 9...Partition wall 10...Inert gas 11 ... Steel billet A... Steel billet width direction B... Steel billet length direction N2 (I), N2 (II), N2 (III
), N2 (fV)...N2 gas flow rate Patent applicant Kawasaki Steel Corporation
Claims (1)
に加熱する誘導加熱装置の温度制御方法において、前記
加熱雰囲気を不活性ガス雰囲気として誘導加熱するとと
もに誘導加熱コイル内側の耐火材壁の長手方向に複数の
仕切り壁を設け、誘導加熱に伴う前記被加熱材の長手方
向温度分布を前記仕切り壁毎に不活性ガスの吹込み量調
整して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。 ２）スラブ等の鋼片を加熱する堅型誘導加熱装置におい
て、前記加熱装置のコイルの内側に耐火材壁とこの耐火
材壁の長手方向に複数の仕切り壁とこの仕切り壁間に不
活性ガスを供給する吹出口とを設けたことを特徴とする
誘導加熱装置。[Scope of Claims] 1) In a temperature control method for an induction heating device that heats a material to be heated such as a slab heated in a heating furnace to a higher temperature, the heating atmosphere is an inert gas atmosphere and induction heating is performed. A plurality of partition walls are provided in the longitudinal direction of the refractory wall inside the coil, and the temperature distribution in the longitudinal direction of the heated material accompanying induction heating is controlled by adjusting the amount of inert gas blown into each partition wall. Features: Temperature control method for induction heating equipment. 2) In a rigid induction heating device that heats steel pieces such as slabs, there is a refractory wall inside the coil of the heating device, a plurality of partition walls in the longitudinal direction of this refractory wall, and an inert gas between the partition walls. An induction heating device characterized by being provided with an air outlet for supplying.
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 true JPH0211717A (en) | 1990-01-16 |
| JPH066734B2 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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06220530A (en) * | 1993-01-27 | 1994-08-09 | Kawasaki Steel Corp | Method for controlling in-furnace atmosphere of vertical type 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
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06220530A (en) * | 1993-01-27 | 1994-08-09 | Kawasaki Steel Corp | Method for controlling in-furnace atmosphere of vertical type 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH066734B2 (en) | 1994-01-26 |
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