JPS63317630A - Induction heater - Google Patents
Induction heaterInfo
- Publication number
- JPS63317630A JPS63317630A JP62051564A JP5156487A JPS63317630A JP S63317630 A JPS63317630 A JP S63317630A JP 62051564 A JP62051564 A JP 62051564A JP 5156487 A JP5156487 A JP 5156487A JP S63317630 A JPS63317630 A JP S63317630A
- Authority
- JP
- Japan
- Prior art keywords
- metal material
- magnetic flux
- induction heating
- shaped metal
- band
- 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
-
- 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)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Furnace Details (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
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に関するもので、特に帯状金属材
料(¥Fi、箔)の連続誘導加熱装置に適した誘導加熱
装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an induction heating device, and particularly to an induction heating device suitable for a continuous induction heating device for band-shaped metal materials (¥Fi, foil).
一般の誘導加熱装置では導電性物質に近接してインダク
タまたは加熱コイルを設ける。加熱コイルには交番磁界
を発生せしめ、電磁誘導作用によって前記導電性物質に
渦電流■を発生させる。この導電性物質に固有の電気抵
抗Rによって、導電性物質にはジュール熱I2 Rが発
生する。In a typical induction heating device, an inductor or heating coil is provided in close proximity to a conductive substance. An alternating magnetic field is generated in the heating coil, and an eddy current (2) is generated in the conductive material by electromagnetic induction. Joule heat I2R is generated in the conductive material due to the electric resistance R inherent in the conductive material.
従来から、例えば特公昭55−36250号と特開昭5
1−138937号でも開示されているように帯状金属
材料の焼鈍等に誘導加熱装置が用いられている。このよ
うな帯状金属材料の加熱に対して誘導加熱方式を適用す
るための方法として、第7図(1)に示される縦方向磁
束加熱方法(Longi−tudinal flux
heating法)と第7図(2)に示される直交方向
磁束加熱方法(Transverse flux h
eating法)とがある。Traditionally, for example, Japanese Patent Publication No. 55-36250 and Japanese Patent Publication No. 5
As disclosed in Japanese Patent No. 1-138937, an induction heating device is used for annealing a band-shaped metal material. As a method for applying the induction heating method to heating such a band-shaped metal material, a longitudinal magnetic flux heating method (Longi-tudinal flux heating method) shown in FIG.
heating method) and the transverse flux heating method shown in FIG. 7(2).
eating method).
直交方向磁束加熱方法の一例を第8図に示す。An example of the orthogonal magnetic flux heating method is shown in FIG.
同図に於て、1.2は一定距離離間して対向配置され且
つ所定距離おいて対向面に凹部Is、2sが形成されて
いる鉄心1a、2aと、前記各凹部13.23に収納さ
れ、且つ巻きはじめと巻き終りとが近接した位置から引
き出されるようにほぼ四辺形状に巻回された誘導加熱コ
イルlb、2bとからなる誘導加熱インダクタの相対向
する上辺、下辺である。5は誘導加熱インダクタ1,2
間の空間を移動しながら誘導加熱処理される帯状金属材
料である。In the figure, the iron cores 1a and 2a are arranged facing each other at a certain distance apart and have recesses Is and 2s formed on their opposing surfaces at a predetermined distance, and the cores 1.2 are housed in the respective recesses 13.23. , and the opposing upper and lower sides of an induction heating inductor consisting of induction heating coils lb and 2b wound in a substantially quadrilateral shape so that the winding start and winding end are pulled out from close positions. 5 is induction heating inductor 1, 2
This is a band-shaped metal material that undergoes induction heating treatment while moving through the space between the two.
直交方向磁束加熱方法は鉄心1,2を用いるため、誘導
加熱処理される金属材料5が磁性材料である場合、発生
する強い電磁力により鉄心1. 2に金属材料5が吸引
されて著しく走行が阻害されるため、直交方向磁束加熱
方法はアルミニウム、オーステナイトステンレス鋼等の
ような非磁性材料の加熱に用いられる。Since the orthogonal magnetic flux heating method uses the iron cores 1 and 2, if the metal material 5 to be subjected to induction heating treatment is a magnetic material, the strong electromagnetic force generated will cause the iron core 1. The orthogonal magnetic flux heating method is used to heat non-magnetic materials such as aluminum, austenitic stainless steel, etc., since the metal material 5 is attracted to the material 2 and significantly inhibits its travel.
第9図は、直交方向磁束加熱方法によりオーステナイト
ステンレス鋼のような帯状金属材料5を誘導加熱した場
合の断面図及び帯状金属材料に生ずる2次電流120分
布状態を示す。帯状金属材料5は相対向する断面「凹」
字形鉄心1a、2aの間を矢印a方向に進む。磁束φは
、例えば図示の矢印方向に発生させて、磁気回路を形成
する。FIG. 9 shows a cross-sectional view and a distribution state of the secondary current 120 generated in the band-shaped metal material when a band-shaped metal material 5 such as austenitic stainless steel is induction heated by the orthogonal magnetic flux heating method. The band-shaped metal material 5 has a “concave” cross section facing each other.
Proceed in the direction of arrow a between the character-shaped iron cores 1a and 2a. The magnetic flux φ is generated, for example, in the direction of the illustrated arrow to form a magnetic circuit.
第9図(1)のように発生される磁束φにより帯状金属
材料5には第9図(2)で示されるような2次電流12
が生じる。この2次電流12により帯状金属材料5が加
熱される。このように加熱されながら帯状金属材料5は
矢印a方向に移動する。その結果帯状金属材料5の幅方
向の大部分は、均一な温度分布で加熱されることになる
。Due to the magnetic flux φ generated as shown in FIG. 9(1), a secondary current 12 as shown in FIG. 9(2) is generated in the strip metal material 5.
occurs. This secondary current 12 heats the band-shaped metal material 5 . While being heated in this manner, the band-shaped metal material 5 moves in the direction of the arrow a. As a result, most of the band-shaped metal material 5 in the width direction is heated with uniform temperature distribution.
しかし、帯状金属材料5のエツジ部5aには、それに加
えてエツジ部を長手方向に流れる2次電流による加熱が
加わる。この結果、エツジ部5aは過熱することになり
、幅方向への均一加熱が困難になる。However, the edge portion 5a of the band-shaped metal material 5 is additionally heated by a secondary current flowing through the edge portion in the longitudinal direction. As a result, the edge portion 5a becomes overheated, making it difficult to uniformly heat it in the width direction.
このような従来法であっても、第9図(2)に示すよう
に鉄心1a、2aの端部が帯状金属材料5より白画の、
ある一定距離にあるように鉄心1a+2aを配置すれば
、はぼ均一加熱パターンが得られる。しかし従来法に於
て鉄心1a、2aの端部が帯状金属材料5のエツジにほ
ぼ等しいか又はエツジより外側にあるように鉄心1a、
2aを配置する場合は前述したように帯状金属材料5の
エツジ部5aの過熱を回避することはできなかった。Even with such a conventional method, as shown in FIG. 9(2), the ends of the iron cores 1a and 2a are whiter than the strip metal material 5.
If the iron cores 1a+2a are arranged at a certain distance, a fairly uniform heating pattern can be obtained. However, in the conventional method, the iron cores 1a, 2a are arranged so that the ends of the iron cores 1a, 2a are approximately equal to or outside the edges of the strip-shaped metal material 5.
2a, overheating of the edge portion 5a of the band-shaped metal material 5 could not be avoided as described above.
以上説明したように、直交方向磁束加熱方法による帯状
金属材料の誘導加熱に於ては、帯状金属材料の幅方向の
均一加熱が難しいということで、及び同一の誘導加熱イ
ンダクタで各種の幅を有する種々の帯状金属材料を均一
加熱することが困難であるということの2つの欠点があ
った。特開昭55−36250 (公知例1という)及
び特公昭55−36250 (公知例2という)は、
これらの欠点を解ン0して直交方向磁束加熱方法による
帯状金属材料の幅方向の均一誘導加熱を行うことを目的
とする装置の提案である。第10図は誘導加熱装置を帯
状金属材料5の幅方向に切って、帯状金属材料5を中心
に上部領域■、下部領域■、左側部領域■、右側部領域
■及び帯状金属材料5がその長手方向に移動するに必要
な空間領域Vの5つの主要領域に分割した図を示す。勿
論公知例1及び公知例2で用いられる誘導加熱装置も第
10図に示したように少なくも5つの主要領域に分ける
ことができる。公知例1、及び公知例2で用いられる誘
導加熱インダクタが共通する点は、1)第8図に示すよ
うな鉄心1a、2aと、誘導加熱コイルlb、2bとか
ら構成されている点、2)帯状金属材料5のエツジ部5
aの磁束密度制御を行なうために、公知例1及び公知例
2が夫々に特徴を持つ磁束制御部材を付属した鉄心1a
、2aを備えている点、3)磁束制御部材を付属した鉄
心1a+2aが第10図に於ける5つの領域のうち、上
部領域工及び下部領域■に属し左側部領域■及び右側部
領域■には属していない点、及び4)帯状金属材料5が
領域■に属しているという4つの点である。即ち、公知
例1及び公知例2を含む従来の直交方向磁束加熱方法で
は第10図に示した左側部領域■及び右側部領域■には
帯状金属材料5のエツジ部5aの磁束密度制御を行って
均一加熱するための磁束制御部材又は装置は備えられて
いなかった。As explained above, in the induction heating of a strip-shaped metal material using the orthogonal magnetic flux heating method, it is difficult to uniformly heat the strip-shaped metal material in the width direction, and the same induction heating inductor has various widths. Two disadvantages were that it was difficult to uniformly heat the various strips of metal material. JP-A-55-36250 (referred to as known example 1) and JP-A-55-36250 (referred to as known example 2),
This is a proposal for an apparatus aimed at solving these drawbacks and performing uniform induction heating in the width direction of a strip-shaped metal material using an orthogonal magnetic flux heating method. FIG. 10 shows the induction heating device cut in the width direction of the strip-shaped metal material 5, and the upper region (■), the lower region (), the left-hand side region (■), the right-hand side region (■), and the strip-shaped metal material 5 (centered on the strip-shaped metal material 5). The diagram shows a division of the spatial region V necessary for longitudinal movement into five main regions. Of course, the induction heating devices used in Known Examples 1 and 2 can also be divided into at least five main areas as shown in FIG. The common points of the induction heating inductors used in Known Example 1 and Known Example 2 are: 1) They are composed of iron cores 1a and 2a and induction heating coils lb and 2b as shown in FIG. 8; ) Edge portion 5 of band-shaped metal material 5
In order to control the magnetic flux density of a, the iron core 1a is attached with a magnetic flux control member having respective characteristics in the known examples 1 and 2.
, 2a, 3) Of the five regions in FIG. and 4) the band-shaped metal material 5 belongs to area (3). That is, in the conventional orthogonal magnetic flux heating methods including the known examples 1 and 2, the magnetic flux density of the edge portion 5a of the band-shaped metal material 5 is controlled in the left side region (1) and right side region (2) shown in FIG. No magnetic flux control member or device was provided for uniform heating.
この発明の主たる目的は直交方向磁束加熱方法による帯
状金属材料の誘導加熱に於ては、帯状金属材料の幅方向
の均一加熱が難しいという欠点を解消して、幅の異なる
帯状金属材料を常に均一加熱し得る、公知例1及び公知
例2とは異なる誘導加熱装置を提供することにある。The main purpose of the present invention is to solve the drawback that it is difficult to uniformly heat the strip metal material in the width direction in the induction heating of the strip metal material using the orthogonal magnetic flux heating method, and to always uniformly heat the strip metal material with different widths. An object of the present invention is to provide an induction heating device that is different from the known examples 1 and 2 and is capable of heating.
この発明の要旨は、帯状金属材料をその長手方向に走行
させながら誘導加熱する誘導加熱装置に於て、所定距離
離間して対向配置され且つ所定距離おいて対向面に凹部
が形成されている鉄心と、前記各凹部に収納され、且つ
巻きはじめと巻き終りとが近接した位置から引き出され
るようにほぼ四辺形状に巻回された誘導加熱コイルとか
らなる誘導加熱インダクタの相対向する上辺、下辺の間
であって、前記帯状金属材料の幅方向両端部分を覆う位
置に夫々磁束集中部材を備え、また前記磁束集中部材を
前記帯状金属材料の幅方向及び長手方向に又両方向に移
動自在とした移動調整装置に連設してなる誘導加熱装置
を提供する。The gist of the present invention is to provide an induction heating device for inductively heating a strip-shaped metal material while running it in its longitudinal direction, in which iron cores are arranged facing each other at a predetermined distance apart and have recesses formed on the opposing surfaces at a predetermined distance. and an induction heating coil that is housed in each of the recesses and is wound in a substantially quadrilateral shape so that the winding start and winding end are pulled out from positions close to each other. magnetic flux concentration members are provided at positions covering both widthwise end portions of the strip-shaped metal material, and the magnetic flux concentration members are movable in the width direction and longitudinal direction of the strip-shaped metal material, and in both directions. An induction heating device is provided which is connected to an adjustment device.
第1図(1)、 (2)はこの発明の一実施例の誘導加
熱装置の側面断面図及び正面断面図を示す。本実施例は
、帯状金属材料5をその長手方向に走行させながら誘導
加熱する誘導加熱装置に於て、一定路Ml glt間し
て対向配置され、且つ所定距離おいて対向面に凹部]、
s、2sが形成された鉄心1a、2aと、各凹部is、
2sに収納され、且つ巻きはじめと巻き終りとが近接し
た位置から引き出されるようにほぼ四辺形状に巻回され
た誘導加熱コイルlb、2bとからなる誘導加熱インダ
クタの相対向する上辺1、下辺2の間にあって、帯状金
属材料5の幅方向両端部分を覆う位置に夫々「コ」字形
磁束集中部材61.62を備え、「コ」字形磁束集中部
材61.62を帯状金属材料5の幅方向及び長手方向に
又両方向に移動自在とした移動調整装置71.72に連
設していることである。FIGS. 1(1) and 1(2) show a side sectional view and a front sectional view of an induction heating device according to an embodiment of the present invention. This embodiment is an induction heating device that induction-heats a strip-shaped metal material 5 while traveling in its longitudinal direction.
Iron cores 1a and 2a in which s and 2s are formed, and each recess is,
The upper side 1 and the lower side 2 of an induction heating inductor which are housed in the coil 2s and are wound in a substantially quadrilateral shape so that the winding start and the winding end are pulled out from close positions, are made up of induction heating coils lb and 2b that face each other. "U"-shaped magnetic flux concentrating members 61 and 62 are provided at positions covering both ends of the strip-shaped metal material 5 in the width direction, respectively, between the "U"-shaped magnetic flux concentration members 61 and 62 in the width direction and the width direction of the strip-shaped metal material 5, respectively. It is connected to movement adjusting devices 71 and 72 which are movable in the longitudinal direction and in both directions.
勿論、簡易的には、予め位置を決めて上辺、下辺のイン
ダクタ1,20間で半固定式とすることも可能である。Of course, for simplicity, it is also possible to decide the position in advance and make it a semi-fixed type between the inductors 1 and 20 on the upper side and the lower side.
更に本発明が公知例1及び公知例2と相異する点は、本
発明の鉄心1a、2aは従来から用いられているもので
特別の磁束制御部材を附属していない点、及び「コ」字
形磁束集中部材61.62が第10図に示した左側部領
域■及び右側部領域■に属して備えられている点である
。Furthermore, the present invention is different from Known Examples 1 and 2 in that the iron cores 1a and 2a of the present invention are conventionally used and do not include any special magnetic flux control member, and The point is that the character-shaped magnetic flux concentrating members 61 and 62 are provided belonging to the left side area (2) and the right side area (2) shown in FIG.
「コ」字形磁束集中部材61.62の形状、寸法につい
て更に詳細に第2図により説明する。第2図は本実施例
の誘導加熱装置右辺側の正面部分拡大図を示す。磁束集
中部材61.62の形状、寸法は左右対称とする。The shape and dimensions of the "U"-shaped magnetic flux concentration members 61, 62 will be explained in more detail with reference to FIG. FIG. 2 shows a partially enlarged front view of the right side of the induction heating device of this embodiment. The shape and dimensions of the magnetic flux concentration members 61 and 62 are symmetrical.
「コ」字形磁束集中部材61.62の凹部と凹部の間を
通る帯状金属材料5の端部とがラップする部分の幅W、
「コ」字形磁束集中部材61.62の上辺a、下辺すの
内面空隙間隔g1、「コ」字形磁束集中部材61.62
の垂直部C内面と帯状金属材料5のエツジEとの空隙間
隔g2、「コ」字形磁束集中部材61.62の長さLy
、及び「コ」字形磁束集中部材61.62と鉄心1a。Width W of the portion where the concave portion of the “U”-shaped magnetic flux concentration member 61, 62 and the end of the band-shaped metal material 5 passing between the concave portions overlap;
"U" shaped magnetic flux concentration member 61.62 upper side a, lower side inner surface gap g1, "U" shaped magnetic flux concentration member 61.62
The gap g2 between the inner surface of the vertical part C and the edge E of the strip metal material 5, and the length Ly of the "U"-shaped magnetic flux concentration member 61.62
, and the "U"-shaped magnetic flux concentration members 61, 62 and the iron core 1a.
2aとの間の空隙間隔g3.g4について説明する。g
l、及びg2は主として本発明の誘導加熱装置を構成す
る誘導加熱インダクタ1.2と「コ」字形磁束集中部材
61.62により囲まれる空間を走行しながら誘導加熱
される帯状金属材料5の走行性と関連する。glは帯状
金属材料5の端部が「コ」字形磁束集中部材61.62
の上下水平部a、b間の中心部を通るように帯状金属材
料5の厚み【より大とする。glを大きくすることは帯
状金属材料5の走行性を良くする反面、相対向する上辺
、下辺の誘導加熱インダクタ1,2間の間隔Gcが大き
くなりそのため帯状金属材料5が加熱されにく(なるの
でglをむやみに太き(しないほうが好ましい。g2は
帯状金属材料5の端部が走行中に「コ」字形磁束集中部
材61.62の垂直部Cと接触しないように、特に走行
する帯状金属材料5の最大蛇行量Sを考慮して選ぶこと
が好ましい。一般的には最大蛇行Qsよりも1a龍以上
余裕をとるほうが好ましい。g3.g4は「コ」字形磁
束集中部材61.62が相対向する上辺、下辺の誘導加
熱インダクタ1.2の間を帯状金属材料5の幅方向に移
動するに必要な空隙である。g3.g4もg2と同様で
Gcを大きくしないように必要最少限にすることが好ま
しい。2a and the air gap g3. g4 will be explained. g
1 and g2 are the running directions of the band-shaped metal material 5 which is heated by induction while running in a space surrounded by the induction heating inductor 1.2 and the U-shaped magnetic flux concentrating member 61, 62 which mainly constitute the induction heating device of the present invention. Related to sex. gl is a U-shaped magnetic flux concentration member 61, 62 at the end of the strip metal material 5.
The thickness of the band-shaped metal material 5 shall be greater than the thickness of the band-shaped metal material 5 so as to pass through the center between the upper and lower horizontal parts a and b. Increasing gl improves the runnability of the strip metal material 5, but it also increases the distance Gc between the induction heating inductors 1 and 2 on the opposing upper and lower sides, making it difficult for the strip metal material 5 to be heated. Therefore, it is preferable not to make gl unnecessarily thick (it is preferable not to make gl unnecessarily thick). It is preferable to take into consideration the maximum meandering amount S of the material 5. Generally, it is preferable to have a margin of 1a or more than the maximum meandering Qs. This is the gap necessary to move the band-shaped metal material 5 in the width direction between the induction heating inductors 1.2 on the upper and lower sides facing each other.G3 and g4 are also the same as g2, and are kept to the minimum necessary so as not to increase Gc. It is preferable to do so.
次にWについて説明する、Wは帯状金属材料5の幅方向
、特に端部温度分布の均一性に関連する。Next, W will be explained. W is related to the uniformity of the temperature distribution in the width direction of the band-shaped metal material 5, especially at the end portion.
Wについて第3図で模式図を用いて説明する。第3図は
誘導加熱して得られる帯状金属材料5の幅方向温度分布
を示す図である。温度分布Aは本発明の誘導加熱装置を
構成する誘導加熱インダクタ1.2を用いて「コ」字形
磁束集中部材61.62を備えていない場合である。B
は、目標温度T(℃)、許容温度幅±ΔT/2 (”C
)の均一加熱条件のある場合の目標温度帯域である。目
標温度帯域Bの上限と温度分布Aとの交点Pと帯状金属
材料5のエツジ8間の距離をWeとすると、「コ」字形
磁束集中部材61.62の凹部と凹部の近傍を通る帯状
金属材料5の端部とがラップする部分の幅Wは経験的に
We以下とするのが好ましく、その範囲でWを選定すれ
ば帯状金属材料5の幅方向温度分布の均一性が良好とな
った。Wが決まれば、「コ」字形磁束集中部材61.6
2の上下水平部a、bの幅wyは、Wy=w+g2とな
る。W will be explained using a schematic diagram in FIG. FIG. 3 is a diagram showing the temperature distribution in the width direction of the band-shaped metal material 5 obtained by induction heating. Temperature distribution A is a case where the induction heating inductor 1.2 constituting the induction heating device of the present invention is used, but the U-shaped magnetic flux concentration members 61, 62 are not provided. B
is the target temperature T (℃), the allowable temperature range ±ΔT/2 ("C
) is the target temperature range when there is a uniform heating condition. If We is the distance between the intersection point P of the upper limit of the target temperature band B and the temperature distribution A and the edge 8 of the strip metal material 5, then the strip metal passing through the recess of the "U"-shaped magnetic flux concentrating member 61, 62 and the vicinity of the recess Empirically, it is preferable that the width W of the portion where the end portion of the material 5 overlaps is less than We, and if W is selected within this range, the uniformity of the temperature distribution in the width direction of the band-shaped metal material 5 becomes good. . Once W is determined, the “U” shaped magnetic flux concentration member 61.6
The width wy of the upper and lower horizontal parts a and b of 2 is Wy=w+g2.
Wの符号は、帯状金属材料5と「コ」字形磁束集中部材
61.62とがランプする場合を正符号、ランプしない
場合を負符号とする。The sign of W is a positive sign when the band-shaped metal material 5 and the U-shaped magnetic flux concentration members 61 and 62 ramp, and a negative sign when they are not ramped.
次にLyについて説明する。LyはWと同様に帯状金属
材料5の幅方向、特に端部温度分布の均一性に関連する
。「コ」字形磁束集中部材61゜62は帯状金属材料5
の誘導加熱中に、第9図(2)に示した帯状金属材料5
のエツジ部5aに集中する2次電流を分散させるように
磁束を制御するために設けられる。「コ」字形磁束集中
部材61゜62は誘導加熱インダクタの相対向する上辺
1、下辺20間にあって被加熱材料5の誘導加熱に寄与
する磁束を制御するために設けられるものであるから、
「コ」字形磁束集中部材61.62の長さLyは鉄心1
a、2aの長さLcとほぼ等しくする。実施例で説明し
た「コ」字形磁束集中部材以外にも第4図に示すように
、例えば「〉」形磁束集中部材、「口」形磁束集中部材
等を選ぶこともできる。また「コ」字形磁束集中部材6
1,62の長さt、yは鉄心1a、2aの長さLcとほ
ぼ等しくする以外に、第5図に示すように「コ」字形磁
束集中部材61.62を長手方向に分割してスペーサ、
例えばセラミックス等を挾む構造にすることもできる。Next, Ly will be explained. Like W, Ly is related to the uniformity of the temperature distribution in the width direction of the band-shaped metal material 5, particularly at the end portions. The “U”-shaped magnetic flux concentration members 61 and 62 are strip-shaped metal material 5.
During induction heating, the strip metal material 5 shown in FIG. 9(2)
The magnetic flux is provided to control the magnetic flux so as to disperse the secondary current concentrated at the edge portion 5a. The U-shaped magnetic flux concentration members 61 and 62 are provided between the opposing upper side 1 and lower side 20 of the induction heating inductor to control the magnetic flux that contributes to the induction heating of the material to be heated 5.
The length Ly of the “U”-shaped magnetic flux concentration member 61 and 62 is the iron core 1
a, approximately equal to the length Lc of 2a. In addition to the "U"-shaped magnetic flux concentrating member described in the embodiment, for example, a "〉"-shaped magnetic flux concentrating member, a "mouth"-shaped magnetic flux concentrating member, etc. can be selected as shown in FIG. In addition, the “U”-shaped magnetic flux concentration member 6
In addition to making the lengths t and y of iron cores 1a and 2a almost equal to the length Lc of iron cores 1a and 2a, as shown in FIG. ,
For example, a structure in which ceramics or the like can be sandwiched can also be used.
「コ」字形磁束集中部材61.62の材料は積層鉄心、
線状結束鉄心、あるいはフェライトコアー等の焼結系成
型鉄心等が用いられる。また、「コ」字形磁束集中部材
61.62は多少なりとも加熱中に鉄損に起因する発熱
があり、除熱するための水冷または空冷の冷却構造とす
ることが好ましい。The material of the "U" shaped magnetic flux concentration members 61 and 62 is a laminated iron core,
A linear bundled iron core or a sintered molded iron core such as a ferrite core is used. Furthermore, since the "U"-shaped magnetic flux concentrating members 61 and 62 generate some heat due to iron loss during heating, it is preferable to use a water-cooled or air-cooled cooling structure to remove the heat.
以下に、本発明を実施した例について具体的に説明する
。帯状金属材料5のオーステナイトステンレス鋼(1,
0鶴厚み×300300鶴毎分1mの速度で連続的に加
熱した。相対向する上辺、下辺の2極鉄心1a、2aの
長さLC,幅W c 、及び上下辺の空隙Gcは夫々2
00m、 600am。Examples of implementing the present invention will be specifically described below. Austenitic stainless steel of band metal material 5 (1,
0 Tsuru thickness x 300300 Tsuru It was heated continuously at a speed of 1 m/min. The length LC and width W c of the bipolar cores 1a and 2a on the opposing upper and lower sides, and the gap Gc on the upper and lower sides are 2, respectively.
00m, 600am.
及び90鶴とし、加熱周波数を500Hz、目標温度帯
域を200℃〜230℃とした。また、gl、g2.g
3及びg4は夫々301膳、30龍。and 90 Tsuru, the heating frequency was 500 Hz, and the target temperature range was 200°C to 230°C. Also, gl, g2. g
3 and g4 are 301 meals and 30 dragons respectively.
10鶴、及び109とした。LyはLcと同じ長さの2
00鶴とした。10 cranes and 109. Ly is 2 with the same length as Lc
It was named 00 Tsuru.
第6図は実施例に於いて、「コ」字形磁束集中部材61
.62の種々なる設置条件での帯状金属材料幅方向温度
分布を示す。「コ」字形磁束集中部材61.62を設け
ない場合について帯状金属材料5の幅方向温度分布は、
帯状金属材料5の幅方向中央部の温度が目標温度帯域下
限、即ち200℃に近い温度になるように電源の出力稠
整を行った。加熱の結果、第6図に示すように帯状金属
材料5の端部が過熱し目標温度帯域200℃〜230℃
を超えて300℃になった。得られた帯状金属材料5の
幅方向温度分布と目標温度帯域上限230℃との交点P
から帯状金属材料5のエツジEまでの距離Weは30鶴
であった。この結果からWを30鶴、 10sxh、
Osmの3つの場合について加熱を実施した。第6
図に示すように「コ」字形磁束集中部材61.62を設
けない場合には帯状金属材料5のエツジ部温度が300
℃と目標温度帯域200℃〜230℃を70℃と太き(
超える温度になるが、本発明による「コ」字形磁束集中
部材61.62を設けることにより帯状金属材料5のエ
ツジ部の過熱が抑えられ、特にWがIOnの場合は帯状
金属材料5の幅方向全域で目標温度帯域200℃〜23
0℃の範囲に入り飛躍的に加熱温度の均一性が改善され
た。FIG. 6 shows a U-shaped magnetic flux concentration member 61 in the embodiment.
.. 62 shows the temperature distribution in the width direction of the strip-shaped metal material under various installation conditions. The temperature distribution in the width direction of the band-shaped metal material 5 in the case where the "U"-shaped magnetic flux concentration members 61 and 62 are not provided is as follows:
The output of the power source was adjusted so that the temperature at the center in the width direction of the band-shaped metal material 5 was close to the lower limit of the target temperature band, that is, 200°C. As a result of heating, as shown in FIG. 6, the end of the band-shaped metal material 5 is overheated and the target temperature range is 200°C to 230°C.
The temperature exceeded 300℃. Intersection point P between the width direction temperature distribution of the obtained band-shaped metal material 5 and the target temperature band upper limit of 230°C
The distance We from the edge E of the band-shaped metal material 5 was 30 mm. From this result, W is 30 cranes, 10 sxh,
Heating was carried out for three cases of Osm. 6th
As shown in the figure, when the U-shaped magnetic flux concentration members 61 and 62 are not provided, the edge temperature of the strip metal material 5 is 300.
℃ and the target temperature range 200℃~230℃ is as thick as 70℃ (
However, by providing the U-shaped magnetic flux concentrating members 61 and 62 according to the present invention, overheating of the edge portion of the strip metal material 5 can be suppressed, and especially when W is IOn, the temperature in the width direction of the strip metal material 5 can be suppressed. Target temperature range 200℃~23 throughout the area
The uniformity of the heating temperature was dramatically improved as it entered the range of 0°C.
以上の説明のように、本発明の誘導加熱装置を用いるこ
とにより帯状金属材料エツジ部に集中する2次電流を分
散させることができ、また、同一加熱インダクタで幅の
異なる帯状金属材料の均一加熱が可能となった。この結
果、帯状金属材料の熱処理、塗膜の乾燥、焼付、その他
帯状金属材料の加熱に関する技術に有利に応用すること
ができる。As explained above, by using the induction heating device of the present invention, it is possible to disperse the secondary current that concentrates on the edge portion of the strip-shaped metal material, and it is also possible to uniformly heat strip-shaped metal materials with different widths using the same heating inductor. became possible. As a result, the present invention can be advantageously applied to heat treatment of band-shaped metal materials, drying and baking of coating films, and other techniques related to heating of band-shaped metal materials.
第1図(1)は本発明を示す側面概略図、(2)は正面
概略図、第2図は第1図(2)の部分拡大図、第3図は
本発明の詳細な説明図、第4図は本実施例とは別の磁束
集中部材の具体例説明図、第5図は本実施とは別の磁束
集中部材分割の具体例説明図、第6図は本発明磁束集中
部材の設置条件での帯状金属材料幅方向温度分布別図、
第7図(1)は従来の縦方向磁束加熱方法の原理図、第
7図(2)は直交方向磁束加熱方法の原理図、第8図は
直交方向磁束加熱方法の概略説明図、第9図は直交方向
磁束加熱方法の具体例説明図、第9図(2)は第9図(
1)の作用を説明するための2次電流分布特性図、第1
0図は直交方向磁束加熱方法による誘導加熱装置の主要
領域分割図である。
図中、5は帯状金属材料、1.2は誘導加熱インダクタ
、61.62は「コ」字形磁束集中部材を示す。
出 願 人 新日本製鐵株式会社
代理人弁理士 青 柳 稔
1 C!31
第4図
第5図
0、 100 200 300−m−−→
−巾昌 [mm]
第6図
a交7同ff1束加熱方内
第7図
N8図
φ磁束
ff9図
第10図
手続補正書(方式)
1、事件の表示
昭和62年特許願第51564号
2、発明の名称
誘導加熱装置
3、補正をする者
事件との関係 特許出願人FIG. 1 (1) is a schematic side view showing the present invention, (2) is a schematic front view, FIG. 2 is a partially enlarged view of FIG. 1 (2), and FIG. 3 is a detailed explanatory diagram of the present invention. FIG. 4 is an explanatory diagram of a specific example of a magnetic flux concentrating member different from this embodiment, FIG. 5 is an explanatory diagram of a specific example of dividing a magnetic flux concentrating member different from this embodiment, and FIG. 6 is an explanatory diagram of a specific example of a magnetic flux concentrating member of the present invention. Diagram of temperature distribution in the width direction of strip metal material under installation conditions,
Fig. 7 (1) is a principle diagram of the conventional longitudinal magnetic flux heating method, Fig. 7 (2) is a principle diagram of the orthogonal magnetic flux heating method, Fig. 8 is a schematic explanatory diagram of the orthogonal magnetic flux heating method, and Fig. 9 The figure is an explanatory diagram of a specific example of the orthogonal direction magnetic flux heating method, and Figure 9 (2) is illustrated in Figure 9 (
1) Secondary current distribution characteristic diagram for explaining the effect of 1)
Figure 0 is a diagram showing the main regions of an induction heating device using the orthogonal magnetic flux heating method. In the figure, 5 indicates a band-shaped metal material, 1.2 indicates an induction heating inductor, and 61.62 indicates a "U"-shaped magnetic flux concentration member. Applicant Nippon Steel Corporation Representative Patent Attorney Minoru Aoyagi 1 C! 31 Figure 4 Figure 5 0, 100 200 300-m--→
- Width [mm] Fig. 6 a. , Name of the invention Induction heating device 3, Relationship with the case of the person making the amendment Patent applicant
Claims (2)
導加熱する誘導加熱装置に於て、所定距離離間させて相
対設し、かつその対向面に凹部を形成した鉄心と、前記
各凹部に収納し、巻きはじめと巻き終りとが近接した位
置から引き出されるようにほぼ四辺形状に巻回された誘
導加熱コイルとからなる誘導加熱インダクタの相対向す
る上辺、下辺の間であって、前記帯状金属材料の幅方向
両端部分を覆う位置に夫々磁束集中部材を備えてなるこ
とを特徴とする誘導加熱装置。(1) In an induction heating device that inductively heats a strip-shaped metal material while traveling in its longitudinal direction, an iron core is placed oppositely at a predetermined distance and has a recess formed on the opposing surface, and is housed in each of the recesses. and between the opposing upper and lower sides of the induction heating inductor, which is composed of an induction heating coil wound in a substantially quadrilateral shape so that the winding start and winding end are pulled out from positions close to each other, the band-shaped metal An induction heating device characterized by comprising magnetic flux concentrating members at positions covering both widthwise end portions of a material.
び長手方向に又両方向に移動自在とした移動調整装置に
連設してなる特許請求の範囲第1項記載の誘導加熱装置
。(2) The induction heating device according to claim 1, wherein the magnetic flux concentrating member is connected to a movement adjusting device that is movable in the width direction and the longitudinal direction of the strip-shaped metal material, and in both directions.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62051564A JPS63317630A (en) | 1987-03-06 | 1987-03-06 | Induction heater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62051564A JPS63317630A (en) | 1987-03-06 | 1987-03-06 | Induction heater |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63317630A true JPS63317630A (en) | 1988-12-26 |
JPH0456093B2 JPH0456093B2 (en) | 1992-09-07 |
Family
ID=12890463
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62051564A Granted JPS63317630A (en) | 1987-03-06 | 1987-03-06 | Induction heater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63317630A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004296368A (en) * | 2003-03-28 | 2004-10-21 | Nippon Steel Corp | Heating device for metal strips with excellent temperature uniformity in the width direction |
JP2005522014A (en) * | 2002-04-04 | 2005-07-21 | セレス | Improvement of heating inductors, especially for metal strip products |
JP2007324009A (en) * | 2006-06-02 | 2007-12-13 | Nippon Steel Corp | Metal strip heating device with excellent temperature uniformity in the plate width direction |
JP2009259588A (en) * | 2008-04-16 | 2009-11-05 | Nippon Steel Corp | Induction heating device and induction heating method of metal plate |
JP2010044924A (en) * | 2008-08-11 | 2010-02-25 | Nippon Steel Corp | Induction heating system of transverse type |
-
1987
- 1987-03-06 JP JP62051564A patent/JPS63317630A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005522014A (en) * | 2002-04-04 | 2005-07-21 | セレス | Improvement of heating inductors, especially for metal strip products |
JP2004296368A (en) * | 2003-03-28 | 2004-10-21 | Nippon Steel Corp | Heating device for metal strips with excellent temperature uniformity in the width direction |
JP2007324009A (en) * | 2006-06-02 | 2007-12-13 | Nippon Steel Corp | Metal strip heating device with excellent temperature uniformity in the plate width direction |
JP2009259588A (en) * | 2008-04-16 | 2009-11-05 | Nippon Steel Corp | Induction heating device and induction heating method of metal plate |
JP2010044924A (en) * | 2008-08-11 | 2010-02-25 | Nippon Steel Corp | Induction heating system of transverse type |
Also Published As
Publication number | Publication date |
---|---|
JPH0456093B2 (en) | 1992-09-07 |
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