JPH0559197U - Stand for heating material of vertical induction furnace - Google Patents
Stand for heating material of vertical induction furnaceInfo
- Publication number
- JPH0559197U JPH0559197U JP000453U JP45392U JPH0559197U JP H0559197 U JPH0559197 U JP H0559197U JP 000453 U JP000453 U JP 000453U JP 45392 U JP45392 U JP 45392U JP H0559197 U JPH0559197 U JP H0559197U
- Authority
- JP
- Japan
- Prior art keywords
- support
- induction heating
- cavity
- metal
- heating
- 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.)
- Pending
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
- Furnace Charging Or Discharging (AREA)
Abstract
(57)【要約】
【目的】 立て形誘導加熱炉において、加熱材料をほぼ
均一に加熱することができる支持金物を提供する。
【構成】 立て形誘導加熱炉の支持台21の頂部に設け
られた支持金物22の内部に空洞部28が設けられてお
り、空洞部28内に断熱材33が充填されている。断熱
材33は、空洞部28直上の部分の水冷による温度降下
を防ぐ。また、支持金物22外周の表面付近の水冷によ
る温度降下は、誘導加熱の表皮効果により補償される。
これらのことにより、支持金物近傍の低温部分が縮小す
るため加熱材料1はほぼ均一に加熱される。
(57) [Abstract] [Purpose] To provide a supporting metal object capable of heating a heating material almost uniformly in a vertical induction heating furnace. [Structure] A cavity 28 is provided inside a metal support 22 provided on the top of a support 21 of a vertical induction heating furnace, and a heat insulating material 33 is filled in the cavity 28. The heat insulating material 33 prevents a temperature drop due to water cooling in a portion directly above the cavity portion 28. Further, the temperature drop due to water cooling near the outer peripheral surface of the support metal 22 is compensated by the skin effect of induction heating.
As a result, the low temperature portion near the supporting metal is reduced, so that the heating material 1 is heated almost uniformly.
Description
【0001】[0001]
この考案は、立て形誘導加熱炉において板状の加熱材料を垂直姿勢で支持する 支持台に関する。 The present invention relates to a support base that supports a plate-shaped heating material in a vertical posture in a vertical induction heating furnace.
【0002】[0002]
誘導加熱炉のうち、炉室が下方に向かって開口し、昇降可能な支持台を備えた 立て形誘導加熱炉がある。立て形誘導加熱炉では、たとえば支持台が板状材料の 板面が垂直姿勢となるようにして材料側面を下方より支持し、支持台が上昇して 材料を炉内に装入する。材料は、板面が垂直となった姿勢で加熱される。このよ うな立て形誘導加熱炉は、たとえば方向性電磁鋼スラブを非酸化性雰囲気で12 00℃以上の高温に加熱するのに用いられる。 Among induction heating furnaces, there is a vertical induction heating furnace in which the furnace chamber opens downward and has a support base that can be moved up and down. In a vertical induction heating furnace, for example, the supporting table supports the material side surface from below so that the plate surface of the plate-shaped material is in a vertical posture, and the supporting table rises to load the material into the furnace. The material is heated with the plate surface vertical. Such a vertical induction heating furnace is used, for example, to heat a grain-oriented electrical steel slab to a high temperature of 1200 ° C. or higher in a non-oxidizing atmosphere.
【0003】 支持台は高温状態で加熱材料を支持しなければならず、支持台頂部は材料加熱 温度以上の耐熱性および高強度が必要とされる。したがって、高温・高強度の材 料で作られた支持金物が、支持台の頂部に支持台長手方向に沿って取り付けられ ている。このような材料として、たとえばCo合金系の耐熱鋼(耐熱限界温度; 約1300℃)が用いられている。さらに、支持金物は劣化防止のために冷却さ れている。たとえば、実公昭56−7826号公報で開示された支持金物は、下 面が水冷されている。さらに、特開平1−136928号公報で開示された支持 金物は、支持金物中に雰囲気ガス供給配管が設けるられているとともに、下面が 水冷されている。The support base must support the heating material in a high temperature state, and the top of the support base is required to have heat resistance higher than the material heating temperature and high strength. Therefore, a supporting metal member made of high temperature and high strength material is attached to the top of the supporting base along the longitudinal direction of the supporting base. As such a material, for example, a Co alloy-based heat resistant steel (heat resistant temperature limit: about 1300 ° C.) is used. In addition, the supporting hardware is cooled to prevent deterioration. For example, in the supporting metal disclosed in Japanese Utility Model Publication No. 56-7826, the lower surface is water-cooled. Further, in the supporting metal disclosed in JP-A-1-136928, an atmosphere gas supply pipe is provided in the supporting metal and the lower surface is water-cooled.
【0004】[0004]
上述のように支持金物は水冷されているので、加熱材料の支持金物に接する面 の付近は支持金物により冷却される。図4は、支持金物近傍の加熱材料(スラブ )温度分布を示している。図4(a)および(b)はそれぞれスラブ厚さ方向お よび長さ方向の温度分布を示している。端の部分の温度が高くなっているのは、 誘導加熱の表皮効果によるものである。図4(c)は、スラブ幅方向の温度分布 を示している。スラブ下面は冷却された支持金物に接しているので、スラブ下部 の温度はスラブ上部の温度よりも低い。いずれの方向についても、冷却水量を減 らすと温度の不均一分布は改善されるが、低温部分が残ってしまう。 As described above, since the supporting metal is water-cooled, the vicinity of the surface of the heating material that contacts the supporting metal is cooled by the supporting metal. FIG. 4 shows the temperature distribution of the heating material (slab) near the support metal. FIGS. 4A and 4B show temperature distributions in the slab thickness direction and the length direction, respectively. The higher temperature at the edges is due to the skin effect of induction heating. FIG. 4C shows the temperature distribution in the slab width direction. The temperature of the lower part of the slab is lower than that of the upper part of the slab because the lower surface of the slab is in contact with the cooled metal support. In either direction, reducing the amount of cooling water improves the non-uniform temperature distribution, but leaves a low temperature part.
【0005】 この考案は、立て形誘導加熱炉において加熱材料をほぼ均一に加熱でき、品質 ・歩留りの良い加熱を可能とする支持台を提供しようとするものである。The present invention is intended to provide a support base that can heat a heating material substantially uniformly in a vertical induction heating furnace and that enables heating with good quality and yield.
【0006】[0006]
この考案の加熱材料支持台は、支持台の頂部に支持金物が支持台長手方向に沿 って取り付けられており、支持金物の内部に空洞部が設けられている。そして、 空洞部内に断熱材が充填されている。 In the heating material support of the present invention, a support metal is attached to the top of the support along the longitudinal direction of the support, and a cavity is provided inside the support. Then, the heat insulating material is filled in the cavity.
【0007】 断熱材としては、キャスタブル、プラスチック耐火物などの不定型耐火物が適 している。加熱材料の長さ方向および厚み方向において、空洞部内面から支持金 物外面に至る支持金物の厚みは、電流浸透の深さの1〜2倍程度である。支持金 物を上下に分割可能な2個の部材で構成すると、空洞部の形成および断熱材の充 填が容易となる。分割した部材はコッターまたはピンにより連結する。As the heat insulating material, castable, plastic refractory, and other irregular refractory materials are suitable. In the length direction and the thickness direction of the heating material, the thickness of the support metal from the inner surface of the cavity to the outer surface of the support is about 1 to 2 times the depth of current penetration. If the supporting metal is composed of two members that can be divided into upper and lower parts, it becomes easy to form the cavity and fill the heat insulating material. The divided members are connected by a cotter or a pin.
【0008】[0008]
支持金物内部の空洞部内に充填された断熱材は、空洞部直上の部分の水冷によ る温度降下を防ぐ。また、支持金物外周の表面付近は下面の水冷によって温度が 下がるが、誘導加熱の表皮効果によってこの温度降下は補償される(図2参照) 。これらのことにより、加熱材料の支持金物近傍の温度低下が防止され、加熱材 料のほぼ均一な加熱が可能となる。 The heat insulating material filled in the cavity inside the supporting metal prevents the temperature drop due to water cooling in the area directly above the cavity. In addition, the temperature near the surface of the outer periphery of the supporting metal is lowered by water cooling of the lower surface, but this temperature drop is compensated by the skin effect of induction heating (see Fig. 2). As a result, the temperature of the heating material near the supporting metal is prevented from lowering, and the heating material can be heated almost uniformly.
【0009】[0009]
方向性電磁鋼スラブを加熱する立て形誘導加熱炉の支持台について、この考案 の実施例を説明する。 An embodiment of the present invention will be described with respect to a support base of a vertical induction heating furnace for heating a grain-oriented electrical steel slab.
【0010】 図5は、スラブを加熱する立て形誘導加熱炉を模式的に示している。図面に示 すように、立て形誘導加熱炉11の炉体12は下方に向かって開口しており、側 壁13の外周に加熱コイル15が取り付けられている。また、炉内のスラブ1を 垂直姿勢で支持する支持台21を備えている。この支持台21の頂部には、支持 金物22が取り付けられている。FIG. 5 schematically shows a vertical induction heating furnace for heating a slab. As shown in the drawing, the furnace body 12 of the vertical induction heating furnace 11 is opened downward, and the heating coil 15 is attached to the outer periphery of the side wall 13. Further, it is provided with a support table 21 for supporting the slab 1 in the furnace in a vertical posture. A support hardware 22 is attached to the top of the support base 21.
【0011】 図1は上記支持金物の縦断面図である。支持金物22は台部24と支持部27 とから構成されている。さらに、台部24と支持部27は互いにはめ合わされ、 コッター31を挿入することで連結する。なお、支持部27の空洞部28には予 め断熱材33を充填しておく。台部24には冷却水路25が設けられており、こ の外側はスタッド35により不定型耐火物36が被覆されている。FIG. 1 is a vertical cross-sectional view of the support metal. The support hardware 22 includes a base 24 and a support 27. Further, the base portion 24 and the supporting portion 27 are fitted to each other, and are connected by inserting the cotter 31. The hollow portion 28 of the support portion 27 is previously filled with the heat insulating material 33. A cooling water passage 25 is provided in the pedestal portion 24, and an irregular refractory material 36 is covered by a stud 35 on the outside thereof.
【0012】 図3は、上記のように構成された支持台を用いてスラブを加熱した場合の支持 金物近傍のスラブ温度分布を示している。図3(a)および(b)はそれぞれス ラブ厚さ方向および長さ方向の温度分布を示している。これらの線図に示すよう に従来の支持金物において冷却水量を少なくした場合よりも、温度差が小さくな る。図3(c)は、スラブ幅方向の温度分布を示している。この線図から明らか なように、スラブ下面は冷却された支持金物に接しているものの、従来の支持金 物における冷却水量を少なくした場合よりも、温度降下の範囲は狭く、スラブの ほぼ均一加熱が達成される。FIG. 3 shows the slab temperature distribution in the vicinity of the support metal member when the slab is heated using the support table configured as described above. FIGS. 3A and 3B show temperature distributions in the slab thickness direction and the length direction, respectively. As shown in these diagrams, the temperature difference is smaller than when the cooling water amount is reduced in the conventional supporting metal. FIG. 3C shows the temperature distribution in the slab width direction. As is clear from this diagram, the lower surface of the slab is in contact with the cooled support metal, but the range of temperature drop is narrower and the slab is almost uniformly heated than when the cooling water amount in the conventional support metal was reduced. Is achieved.
【0013】[0013]
この考案の支持台では、支持金物内部に設けられた空洞部内に断熱材が充填さ れている。断熱材は、空洞部直上の部分の水冷による温度降下を防ぐ。また、支 持金物外周の表面付近の水冷による温度降下は、誘導加熱の表皮効果により補償 される。これらのことにより、加熱材料の支持金物近傍の温度低下が防止され、 加熱材料のほぼ均一な加熱が可能となる。また、空洞部を設けることにより、そ れだけ耐熱鋼の使用量が減り、支持金物のコストを下げることができる。 In the support base of this invention, the heat insulating material is filled in the cavity provided inside the support metal. The heat insulating material prevents a temperature drop due to water cooling just above the cavity. In addition, the temperature drop due to water cooling near the surface of the supporting metal is compensated by the skin effect of induction heating. As a result, the temperature of the heating material in the vicinity of the supporting metal is prevented from lowering, and the heating material can be heated almost uniformly. Further, by providing the hollow portion, the amount of heat-resistant steel used can be reduced correspondingly, and the cost of the supporting metal can be reduced.
【図1】この考案の一実施例であって、支持金物の断面
図である。FIG. 1 is a sectional view of a support metal according to an embodiment of the present invention.
【図2】支持金物外周面の水冷による温度降下を誘導加
熱の表皮効果により補償する作用を説明する図面であ
る。FIG. 2 is a view for explaining the action of compensating for the temperature drop due to water cooling of the outer peripheral surface of the supporting metal by the skin effect of induction heating.
【図3】この考案の支持台を用いてスラブを加熱した場
合の支持金物近傍のスラブ温度分布を示す線図である。FIG. 3 is a diagram showing a slab temperature distribution in the vicinity of a supporting metal member when a slab is heated using the support base of the present invention.
【図4】従来の支持台を用いてスラブを加熱した場合の
支持金物近傍のスラブ温度分布を示す線図である。FIG. 4 is a diagram showing a slab temperature distribution in the vicinity of a supporting metal member when a slab is heated using a conventional support table.
【図5】この考案が実施される立て形誘導加熱炉の一例
を模式的に示す斜視図である。FIG. 5 is a perspective view schematically showing an example of a vertical induction heating furnace in which the present invention is implemented.
1 スラブ(加熱材料) 11 誘導加熱炉 12 炉体 13 側壁 15 加熱コイル 21 支持台 22 支持金物 24 台部 25 冷却水路 27 支持部 28 空洞部 31 コッター 33 断熱材 35 スタッド 36 不定型耐火物 1 Slab (Heating Material) 11 Induction Heating Furnace 12 Furnace Body 13 Side Wall 15 Heating Coil 21 Supporting Stand 22 Supporting Hardware 24 Standing Section 25 Cooling Water Channel 27 Supporting Section 28 Cavity 31 Cotter 33 Thermal Insulation 35 Stud 36 Atypical Refractory
Claims (1)
して昇降する支持台を備え、支持台の頂部に支持金物が
支持台長手方向に沿って取り付けられた誘導加熱炉にお
いて、前記支持金物の内部に空洞部が設けられており、
空洞部内に断熱材が充填されていることを特徴とする立
て形誘導加熱炉の加熱材料支持台。1. An induction heating furnace, comprising: a support base that vertically supports a plate-shaped heating material from below and elevates the support base; and a support metal piece attached to the top of the support base along the longitudinal direction of the support base. There is a cavity inside the hardware,
A heating material support base for a vertical induction heating furnace, characterized in that a cavity is filled with a heat insulating material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP000453U JPH0559197U (en) | 1992-01-10 | 1992-01-10 | Stand for heating material of vertical induction furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP000453U JPH0559197U (en) | 1992-01-10 | 1992-01-10 | Stand for heating material of vertical induction furnace |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0559197U true JPH0559197U (en) | 1993-08-06 |
Family
ID=11474218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP000453U Pending JPH0559197U (en) | 1992-01-10 | 1992-01-10 | Stand for heating material of vertical induction furnace |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0559197U (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS567826U (en) * | 1979-06-29 | 1981-01-23 | ||
JPH03110380A (en) * | 1989-09-25 | 1991-05-10 | Kawasaki Steel Corp | Vertical induction heating furnace |
-
1992
- 1992-01-10 JP JP000453U patent/JPH0559197U/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS567826U (en) * | 1979-06-29 | 1981-01-23 | ||
JPH03110380A (en) * | 1989-09-25 | 1991-05-10 | Kawasaki Steel Corp | Vertical induction heating furnace |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19970930 |