WO2013061663A1 - Heating furnace and method for cleaning interior of heating furnace - Google Patents
Heating furnace and method for cleaning interior of heating furnace Download PDFInfo
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- WO2013061663A1 WO2013061663A1 PCT/JP2012/069210 JP2012069210W WO2013061663A1 WO 2013061663 A1 WO2013061663 A1 WO 2013061663A1 JP 2012069210 W JP2012069210 W JP 2012069210W WO 2013061663 A1 WO2013061663 A1 WO 2013061663A1
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- hearth
- heating furnace
- divided
- column
- lifting device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
Definitions
- the present invention relates to a heating furnace in which a hearth is supported by a hearth column provided in a space below the hearth, and a cleaning method in the heating furnace for cleaning the inside of such a heating furnace.
- a heating furnace in which a hearth is supported by a hearth column provided in a space below the hearth, and a cleaning method in the heating furnace for cleaning the inside of such a heating furnace.
- various heating furnaces such as a walking beam type and a pusher type have been used as a heating furnace that sequentially moves a workpiece such as a steel slab and a steel plate in a heating furnace and continuously heats them. .
- Patent Document 1 a self-propelled carriage provided with a scale removing conveyor provided with a scraper for scraping the scale and a scale collecting means for collecting the scale scraped by the scale removing conveyor.
- a self-propelled carriage provided with a scale removing conveyor provided with a scraper for scraping the scale and a scale collecting means for collecting the scale scraped by the scale removing conveyor.
- the self-propelled carriage is provided with a scale removal conveyor and scale recovery means, the self-propelled carriage is enlarged, and the hearth provided with a large number of support columns for supporting various beams is provided on the hearth.
- the props were in the way and the self-propelled carriage could not be run properly, and scales deposited on the hearth could not be removed sufficiently.
- the present invention removes scales and the like generated and deposited in the heating furnace in the heating furnace in which the objects to be processed are sequentially conveyed in the heating furnace to heat-treat the objects to be processed. It is an object to solve various problems.
- the present invention removes the scale generated in the heating furnace and deposited on the hearth in the heating furnace in which the hearth is supported by the hearth column provided in the space below the hearth.
- the scale and the like deposited on the hearth can be efficiently cleaned in a short time without providing complicated equipment in the heating furnace. Is.
- the heating furnace in order to solve the above-described problems, in the heating furnace in which the hearth is supported by the hearth column provided in the space part below the hearth, a plurality of the above hearths are provided.
- an elevating device is provided on at least a part of each hearth column supporting each divided hearth, and the divided hearth is raised and lowered by the elevating device via the hearth column. .
- the above-mentioned divided hearth is moved up and down through the hearth column by the lifting device, and the vertical direction between the adjacent divided hearths The inside of the heating furnace was cleaned through this gap.
- an elevator is provided for each hearth column supporting each divided hearth, and each divided hearth is individually raised and lowered by the elevator device via the hearth column. Can be.
- the lifting device when forming a vertical gap between adjacent divided hearths, raises one adjacent divided hearth via the hearth column and raises the hearth by the lifting device.
- the other divided hearth is lowered through the support, even when the distance to raise and lower the divided hearth is reduced, a sufficient gap can be secured between the adjacent divided hearths. Become.
- the type of the heating furnace is not particularly limited, but a fixed beam along the furnace length direction is provided on a support member erected on the hearth, and is provided in a space below the hearth.
- a walking beam type in which a drive beam that performs a walking operation is provided along a furnace length direction on a support member that protrudes above the hearth through a through-hole provided in the hearth from a moving frame provided It is easy to use because a space is previously formed below the hearth.
- the walking beam type heating furnace if the fixed beam along the furnace length direction is continuously present between the divided hearths, the divided hearths divided as described above are individually provided. When moving up and down, this fixed beam gets in the way, making it difficult to individually lift and lower the divided hearth. Therefore, the fixed beam is divided corresponding to each divided hearth.
- the hearth is divided into a plurality of sections as described above, and an elevating device is provided on at least a part of each hearth column supporting each divided hearth. Since the split hearth is lifted and lowered by the lifting device via the hearth column, the split hearth is lifted and lowered by the lifting device to form a vertical gap between the adjacent split hearths. The inside of the heating furnace can be cleaned through.
- the walking beam type heating furnace which concerns on one Embodiment of this invention, it is the schematic cross-sectional explanatory drawing which showed the internal state of the heating furnace in the state which divided
- it is a schematic longitudinal cross-sectional explanatory view showing a state in which an elevating device is provided on the hearth column supporting the divided hearth.
- only one split hearth of the adjacent split hearth is lowered by the lifting device, and a state in which a vertical gap is formed between the adjacent split hearths is shown.
- one divided hearth of the adjacent divided hearth is lowered by the lifting device, and the other divided hearth is raised by the lifting device, so that the adjacent divided hearth
- heating furnace according to an embodiment of the present invention and a cleaning method in the heating furnace will be specifically described with reference to the accompanying drawings.
- the heating furnace and the cleaning method in the heating furnace according to the present invention are not limited to those shown in the following embodiments, and can be appropriately changed and implemented within a range not changing the gist of the invention.
- a walking beam type heating furnace will be described as an example.
- the heating furnace of the present invention is not limited to the walking beam type, and can be applied to various heating furnaces such as a pusher type. .
- a hearth 10 provided in the heating furnace 1 is required in the furnace length direction and the width direction of the heating furnace 1, respectively.
- a plurality of support members 11 are erected at intervals, and fixed beams 12 are attached on the respective support members 11 provided along the furnace length direction so as to extend along the furnace length direction.
- a plurality of fixed beams 12 are provided in the width direction of the heating furnace 1 at a predetermined interval.
- a moving frame 20 is provided in the space S below the hearth 10, and a plurality of support members 21 protrude from the moving frame 20 above the hearth 10 through the through-holes 13 provided in the hearth 10.
- a plurality of support members 21 are provided in the furnace length direction and the width direction of the heating furnace 1 with required intervals. Then, the drive beam 22 is attached on each support member 21 provided along the furnace length direction so as to be along the furnace length direction, and the drive beam 22 along the furnace length direction is thus attached to the fixed beam. 12 and a plurality of appropriate intervals in the width direction of the heating furnace 1.
- a walking beam driving means 23 is provided under the moving frame 20, and the walking frame driving means 23 causes the moving frame 20 to reciprocate up and down and reciprocate in the furnace length direction.
- Each of the drive beams 22 provided in the is operated to walk.
- the door 2a provided at the introduction port 2 of the heating furnace 1 is opened, the workpiece W is introduced into the heating furnace 1, and each of the drive beams 22 is caused to perform a walking operation as described above. Heating is performed while moving the article W sequentially in the furnace length direction, the door 3a provided at the take-out port 3 of the heating furnace 1 is opened, and the workpiece W thus heat-treated from the inside of the heating furnace 1 is opened. I try to take it out.
- the above hearth 10 is divided into a plurality of sections, and each divided hearth 10a divided in this way is provided for each hearth column provided with a lifting device 14. 15 is held up and down freely.
- the lifting device 14 when the divided hearth 10a divided as described above is individually moved up and down by the lifting device 14, if the fixed beam 12 is continuously provided along the furnace length direction, the fixed beam 12 is Since it becomes impossible to raise and lower the divided hearth 10a individually, the fixed beam 12 along the furnace length direction is divided at a position corresponding to each divided hearth 10a.
- the operation of the heating furnace 1 is stopped and the temperature in the heating furnace 1 is lowered to some extent.
- one split hearth 10a of the adjacent split hearths 10a is lowered by the lifting device 14 to form a vertical gap between the adjacent split hearths 10a.
- a cleaning device such as a vacuum is guided onto the lowered split hearth 10a through this gap, and the scale deposited on the split hearth 10a lowered by the cleaning device is sucked. Then, it is removed from above the lowered divided hearth 10a.
- the divided hearth 10a to be lowered as described above is changed in order, and the scale and the like deposited on each of the divided hearths 10a is sucked and removed by the above-described cleaning device. Clean the scales deposited on top.
- the one divided hearth 10a of the adjacent divided hearth 10a is lowered by the elevating device 14 as described above, but also one divided hearth 10a of the adjacent divided hearth 10a as shown in FIG. Can be lowered by the lifting device 14 and the other divided hearth 10a can be lifted by the lifting device 14. If it does in this way, even when the distance which raises / lowers each division hearth 10a with the raising / lowering apparatus 14 is decreased, the clearance gap between adjacent division hearth 10a can fully be ensured now.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Tunnel Furnaces (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
For a heating furnace for which the hearth is supported by means of hearth support pillars provided in a space below the hearth, the present invention addresses the problem of efficiently and quickly removing scale and the like generated in the heating furnace and accumulating on the hearth, without providing complex equipment in the heating furnace. In this heating furnace (1), for which the hearth (10) is supported by means of hearth support pillars (15) provided in a space (S) below the hearth, the hearth is divided into multiple sections, and at least a portion of the hearth support pillars supporting the resulting hearth sections (10a) are provided with elevation devices (14). The hearth sections are raised or lowered via the hearth support pillars by means of these elevation devices, thereby forming vertical gaps between adjacent hearth sections, and the interior of the heating furnace is cleaned by way of these gaps.
Description
本発明は、炉床の下方における空間部内に設けられた炉床支柱により炉床を支持させた加熱炉及びこのような加熱炉内を清掃させる加熱炉内の清掃方法に関するものである。特に、上記のような加熱炉内において発生して炉床の上に堆積するスケールなどを除去させるにあたり、加熱炉の内部などの構造を複雑にしなくても、炉床の上に堆積したスケールなどを短時間で効率よく清掃できるようにした点に特徴を有するものである。
The present invention relates to a heating furnace in which a hearth is supported by a hearth column provided in a space below the hearth, and a cleaning method in the heating furnace for cleaning the inside of such a heating furnace. In particular, when removing the scale generated in the heating furnace as described above and deposited on the hearth, the scale deposited on the hearth without complicating the structure of the inside of the heating furnace, etc. Is characterized in that it can be efficiently cleaned in a short time.
従来から、鋼片、鋼板等の被処理物を加熱炉内において順々に移動させて連続的に加熱処理する加熱炉として、ウォーキングビーム式やプッシャー式等の各種の加熱炉が使用されている。
Conventionally, various heating furnaces such as a walking beam type and a pusher type have been used as a heating furnace that sequentially moves a workpiece such as a steel slab and a steel plate in a heating furnace and continuously heats them. .
ここで、このような加熱炉においては、一般に、加熱炉内において被処理物を順々に搬送させて加熱処理させる場合に、被処理物の表面から離脱されたスケールなどが炉床の上に堆積されるようになり、安定して加熱炉を運転させるためには、このように炉床の上に堆積されたスケールなどを除去させることが必要になる。
Here, in such a heating furnace, in general, when the workpieces are sequentially conveyed and heated in the heating furnace, a scale or the like detached from the surface of the workpiece is placed on the hearth. In order to be deposited and to operate the heating furnace stably, it is necessary to remove the scale and the like deposited on the hearth in this way.
そして、従来においては、炉床の上に堆積されたスケールなどを除去させるにあたり、一般に、加熱炉の運転を停止させて、加熱炉内を十分に冷却させた後、人が加熱炉内に入って炉床の上に堆積されたスケールなどを除去するようにしていた。
Conventionally, in order to remove scales and the like deposited on the hearth, generally, the operation of the heating furnace is stopped and the inside of the heating furnace is sufficiently cooled, and then a person enters the heating furnace. The scales accumulated on the hearth were removed.
しかし、このように加熱炉の運転を停止させて、加熱炉内を十分に冷却させるのには長い時間が必要になると共に、加熱炉の運転を再開させるのに、加熱炉内の温度を十分に上昇させるのにも長い時間が必要になり、運転効率が大きく低下するという問題があった。また、加熱炉内に人が入って炉床の上に堆積されたスケールなどを除去する作業は重労働であり、作業性や安全性の点でも問題があった。
However, it takes a long time to stop the operation of the heating furnace and sufficiently cool the inside of the heating furnace, and the temperature in the heating furnace is sufficient to restart the operation of the heating furnace. However, it takes a long time to increase the operation efficiency, and there is a problem that the operation efficiency is greatly reduced. In addition, the work of removing scales deposited on the hearth when a person enters the heating furnace is a heavy labor, and there is a problem in terms of workability and safety.
そして、従来においては、特許文献１に示されるように、スケールを掻き取るスクレーパーを備えたスケール除去コンベアと、このスケール除去コンベアによって掻き取られたスケールを回収するスケール回収手段を設けた自走台車によって、炉床の上に堆積されたスケールなどを機械的に除去するようにしたものが提案されている。
Conventionally, as shown in Patent Document 1, a self-propelled carriage provided with a scale removing conveyor provided with a scraper for scraping the scale and a scale collecting means for collecting the scale scraped by the scale removing conveyor. Has proposed to mechanically remove scales and the like deposited on the hearth.
しかし、このように自走台車にスケール除去コンベアやスケール回収手段を設けると、自走台車が大型化し、各種のビームを支持する支柱が数多く設けられた炉床においては、炉床に設けられた支柱が邪魔になって自走台車を適切に走行させることができず、炉床の上に堆積されたスケールなどを十分に除去することができないという問題があった。
However, if the self-propelled carriage is provided with a scale removal conveyor and scale recovery means, the self-propelled carriage is enlarged, and the hearth provided with a large number of support columns for supporting various beams is provided on the hearth. There was a problem that the props were in the way and the self-propelled carriage could not be run properly, and scales deposited on the hearth could not be removed sufficiently.
また、特許文献２においては、炉床を貫通するように炉床にホッパーを設けると共に、このホッパーの下にスケール排出ダクトを設け、このスケール排出ダクトの下端部を水槽に浸漬させて水封させるようにし、上記のホッパーを下方に傾斜させて、加熱炉内において発生したスケールなどを上記のホッパーからスケール排出ダクトを通して水槽内に落下させ、このように落下されたスケールなどをコンベアで搬送させるようにしたものが提案されている。
Moreover, in patent document 2, while providing a hopper in a hearth so that it may penetrate a hearth, a scale discharge duct is provided under this hopper, and the lower end part of this scale discharge duct is immersed in a water tank, and is water-sealed. In such a manner, the hopper is inclined downward, the scale generated in the heating furnace is dropped from the hopper through the scale discharge duct into the water tank, and the dropped scale is conveyed by the conveyor. What has been proposed is proposed.
しかし、炉床全体に対して、下方に傾斜させたホッパーを設けると共に、このホッパーの下にスケール排出ダクトを連続して設け、このスケール排出ダクトの下端部を水槽に浸漬させて水封させる場合、加熱炉の内部などの構造が複雑になってその施工が非常に困難になり、設備コストが非常に高くつくという問題があった。さらに、加熱炉内における熱が、炉床を貫通するように設けられたホッパー及びスケール排出ダクトを通して水槽に導かれ、熱損失が非常に大きくなる等の多くの問題が存在した。
However, when a hopper inclined downward is provided for the entire hearth, a scale discharge duct is continuously provided under the hopper, and the lower end of the scale discharge duct is immersed in a water tank and sealed with water. There is a problem that the construction of the inside of the heating furnace becomes complicated and the construction becomes very difficult, and the equipment cost is very high. Furthermore, there are many problems such that heat in the heating furnace is led to the water tank through a hopper and a scale discharge duct provided so as to penetrate the hearth, and heat loss becomes very large.
本発明は、加熱炉内において被処理物を順々に搬送させて、被処理物を加熱処理させる加熱炉において、加熱炉内において発生して堆積されるスケールなどを除去する場合における上記のような様々な問題を解決することを課題とするものである。
As described above, the present invention removes scales and the like generated and deposited in the heating furnace in the heating furnace in which the objects to be processed are sequentially conveyed in the heating furnace to heat-treat the objects to be processed. It is an object to solve various problems.
特に、本発明は、炉床の下方における空間部内に設けられた炉床支柱により炉床を支持させた加熱炉において、この加熱炉内において発生して炉床の上に堆積するスケールなどを除去させるにあたり、加熱炉に複雑な設備を設けなくても、炉床の上に堆積したスケールなどを短時間で効率よく清掃できるようにして、加熱炉の停止時間等を短くすることを課題とするものである。
In particular, the present invention removes the scale generated in the heating furnace and deposited on the hearth in the heating furnace in which the hearth is supported by the hearth column provided in the space below the hearth. In order to reduce the time required to stop the heating furnace, the scale and the like deposited on the hearth can be efficiently cleaned in a short time without providing complicated equipment in the heating furnace. Is.
本発明に係る加熱炉においては、上記のような課題を解決するため、炉床の下方における空間部内に設けられた炉床支柱により炉床を支持させた加熱炉において、上記の炉床を複数の区画に分割させると共に、分割された各分割炉床を支持する各炉床支柱の少なくとも一部に昇降装置を設け、この昇降装置により炉床支柱を介して分割炉床を昇降させるようにした。
In the heating furnace according to the present invention, in order to solve the above-described problems, in the heating furnace in which the hearth is supported by the hearth column provided in the space part below the hearth, a plurality of the above hearths are provided. In addition to being divided into sections, an elevating device is provided on at least a part of each hearth column supporting each divided hearth, and the divided hearth is raised and lowered by the elevating device via the hearth column. .
そして、本発明に係る加熱炉内の清掃方法においては、上記のような加熱炉において、上記の分割炉床を昇降装置により炉床支柱を介して昇降させ、隣接する分割炉床間に上下方向の隙間を形成し、この隙間を通して加熱炉内の清掃を行うようにした。
And in the cleaning method in the heating furnace according to the present invention, in the heating furnace as described above, the above-mentioned divided hearth is moved up and down through the hearth column by the lifting device, and the vertical direction between the adjacent divided hearths The inside of the heating furnace was cleaned through this gap.
ここで、上記の加熱炉においては、分割された各分割炉床を支持する各炉床支柱にそれぞれ昇降装置を設け、各昇降装置により炉床支柱を介して各分割炉床を個別に昇降させるようにすることができる。
Here, in the heating furnace described above, an elevator is provided for each hearth column supporting each divided hearth, and each divided hearth is individually raised and lowered by the elevator device via the hearth column. Can be.
また、上記の加熱炉において、隣接する分割炉床間に上下方向の隙間を形成するにあたり、昇降装置により炉床支柱を介して隣接する一方の分割炉床を上昇させると共に、昇降装置により炉床支柱を介して隣接する他方の分割炉床を下降させるようにすると、分割炉床を昇降させる距離を少なくした場合においても、隣接する分割炉床間における隙間を十分に確保することができるようになる。
Further, in the above heating furnace, when forming a vertical gap between adjacent divided hearths, the lifting device raises one adjacent divided hearth via the hearth column and raises the hearth by the lifting device. When the other divided hearth is lowered through the support, even when the distance to raise and lower the divided hearth is reduced, a sufficient gap can be secured between the adjacent divided hearths. Become.
なお、上記の加熱炉の種類は特に限定されないが、炉床に立設された支持部材の上に炉長方向に沿った固定ビームが設けられると共に、上記の炉床の下方における空間部内に設けられた移動フレームから炉床に設けられた貫通部を通して炉床の上方に突出された支持部材の上にウォーキング動作を行う駆動ビームが炉長方向に沿って設けられたウォーキングビーム式のものにおいては、予め炉床の下方に空間部が形成されている点で利用しやすい。なお、ウォーキングビーム式の加熱炉において、炉長方向に沿った固定ビームが分割された分割炉床間に連続して存在していると、上記のようにして分割された分割炉床を個別に昇降させる場合に、この固定ビームが邪魔になって、分割炉床を個別に昇降させることが困難になるため、固定ビームを各分割炉床に対応して分割させるようにする。
The type of the heating furnace is not particularly limited, but a fixed beam along the furnace length direction is provided on a support member erected on the hearth, and is provided in a space below the hearth. In a walking beam type in which a drive beam that performs a walking operation is provided along a furnace length direction on a support member that protrudes above the hearth through a through-hole provided in the hearth from a moving frame provided It is easy to use because a space is previously formed below the hearth. In the walking beam type heating furnace, if the fixed beam along the furnace length direction is continuously present between the divided hearths, the divided hearths divided as described above are individually provided. When moving up and down, this fixed beam gets in the way, making it difficult to individually lift and lower the divided hearth. Therefore, the fixed beam is divided corresponding to each divided hearth.
本発明における加熱炉においては、上記のように炉床を複数の区画に分割させると共に、分割された各分割炉床を支持する各炉床支柱の少なくとも一部の炉床支柱に昇降装置を設け、昇降装置により炉床支柱を介して分割炉床を昇降させるようにしたため、上記の昇降装置により分割炉床を昇降させて、隣接する分割炉床間に上下方向の隙間を形成し、この隙間を通して加熱炉内の清掃を行うことができるようになる。
In the heating furnace according to the present invention, the hearth is divided into a plurality of sections as described above, and an elevating device is provided on at least a part of each hearth column supporting each divided hearth. Since the split hearth is lifted and lowered by the lifting device via the hearth column, the split hearth is lifted and lowered by the lifting device to form a vertical gap between the adjacent split hearths. The inside of the heating furnace can be cleaned through.
この結果、本発明における加熱炉においては、加熱炉内において発生して炉床の上に堆積したスケールなどを除去させるにあたり、従来のように加熱炉に複雑な設備を設ける必要がなくなると共に、炉床の下から炉床の上に堆積したスケールなどを除去することができ、加熱炉の停止時間等を短くして、短時間で効率よく炉床の上に堆積したスケールなどを適切に清掃できるようになる。
As a result, in the heating furnace in the present invention, it is not necessary to provide complicated equipment in the heating furnace as in the prior art in order to remove scales and the like generated in the heating furnace and deposited on the hearth. Scales deposited on the hearth from the bottom of the floor can be removed, heating furnace stoppage time can be shortened, and scales deposited on the hearth can be cleaned efficiently in a short time. It becomes like this.
以下、本発明の実施形態に係る加熱炉及びこの加熱炉内の清掃方法を添付図面に基づいて具体的に説明する。なお、本発明に係る加熱炉及び加熱炉内の清掃方法は下記の実施形態に示したものに限定されず、発明の要旨を変更しない範囲において、適宜変更して実施できるものである。
Hereinafter, a heating furnace according to an embodiment of the present invention and a cleaning method in the heating furnace will be specifically described with reference to the accompanying drawings. In addition, the heating furnace and the cleaning method in the heating furnace according to the present invention are not limited to those shown in the following embodiments, and can be appropriately changed and implemented within a range not changing the gist of the invention.
この実施形態においては、ウォーキングビーム式の加熱炉を例にして説明するが、本発明の加熱炉は、ウォーキングビーム式のものに限られず、プッシャー式等の各種の加熱炉に適用できるものである。
In this embodiment, a walking beam type heating furnace will be described as an example. However, the heating furnace of the present invention is not limited to the walking beam type, and can be applied to various heating furnaces such as a pusher type. .
この実施形態におけるウォーキングビーム式の加熱炉１においては、図１及び図２に示すように、加熱炉１内に設けられた炉床１０に、炉長方向及び加熱炉１の幅方向にそれぞれ所要間隔を介して複数の支持部材１１を立設させ、炉長方向に沿うようにして固定ビーム１２を炉長方向に沿って設けられた各支持部材１１の上に取り付け、このように炉長方向に沿った固定ビーム１２を加熱炉１の幅方向に所要間隔を介して複数設けている。
In the walking beam type heating furnace 1 in this embodiment, as shown in FIGS. 1 and 2, a hearth 10 provided in the heating furnace 1 is required in the furnace length direction and the width direction of the heating furnace 1, respectively. A plurality of support members 11 are erected at intervals, and fixed beams 12 are attached on the respective support members 11 provided along the furnace length direction so as to extend along the furnace length direction. A plurality of fixed beams 12 are provided in the width direction of the heating furnace 1 at a predetermined interval.
また、上記の炉床１０の下方における空間部Ｓに移動フレーム２０を設け、この移動フレーム２０から複数の支持部材２１を炉床１０に設けられた各貫通部１３を通して炉床１０の上方に突出させ、炉長方向及び加熱炉１の幅方向にそれぞれ所要間隔を介して複数の支持部材２１を設けている。そして、炉長方向に沿うようにして駆動ビーム２２を炉長方向に沿って設けられた各支持部材２１の上に取り付け、このように炉長方向に沿った駆動ビーム２２を、上記の固定ビーム１２と適当な間隔を介するようにして加熱炉１の幅方向に所要間隔を介して複数設けている。
A moving frame 20 is provided in the space S below the hearth 10, and a plurality of support members 21 protrude from the moving frame 20 above the hearth 10 through the through-holes 13 provided in the hearth 10. A plurality of support members 21 are provided in the furnace length direction and the width direction of the heating furnace 1 with required intervals. Then, the drive beam 22 is attached on each support member 21 provided along the furnace length direction so as to be along the furnace length direction, and the drive beam 22 along the furnace length direction is thus attached to the fixed beam. 12 and a plurality of appropriate intervals in the width direction of the heating furnace 1.
また、上記の移動フレーム２０の下にウォーキングビーム駆動手段２３を設け、このウォーキングビーム駆動手段２３により、移動フレーム２０を上下方向に往復移動させると共に炉長方向に往復移動させて、この移動フレーム２０に設けられた各駆動ビーム２２をウォーキング動作させるようにしている。
Further, a walking beam driving means 23 is provided under the moving frame 20, and the walking frame driving means 23 causes the moving frame 20 to reciprocate up and down and reciprocate in the furnace length direction. Each of the drive beams 22 provided in the is operated to walk.
そして、加熱炉１の導入口２に設けられた扉２ａを開けて、被処理物Ｗを加熱炉１内に導入し、上記のように各駆動ビーム２２をウォーキング動作させて、上記の被処理物Ｗを炉長方向に順々に移動させながら加熱処理し、加熱炉１の取出し口３に設けた扉３ａを開けて、このように加熱処理された被処理物Ｗを加熱炉１内から取り出すようにしている。
Then, the door 2a provided at the introduction port 2 of the heating furnace 1 is opened, the workpiece W is introduced into the heating furnace 1, and each of the drive beams 22 is caused to perform a walking operation as described above. Heating is performed while moving the article W sequentially in the furnace length direction, the door 3a provided at the take-out port 3 of the heating furnace 1 is opened, and the workpiece W thus heat-treated from the inside of the heating furnace 1 is opened. I try to take it out.
ここで、この実施形態における加熱炉１においては、上記の炉床１０を複数の区画に分割させると共に、このように分割された各分割炉床１０ａを昇降装置１４が設けられた各炉床支柱１５によって昇降自在に保持させている。
Here, in the heating furnace 1 in this embodiment, the above hearth 10 is divided into a plurality of sections, and each divided hearth 10a divided in this way is provided for each hearth column provided with a lifting device 14. 15 is held up and down freely.
また、上記のように分割された分割炉床１０ａを個別に昇降装置１４によって昇降させる場合に、上記の固定ビーム１２が炉長方向に沿って連続して設けられていると、固定ビーム１２が邪魔になって、分割炉床１０ａを個別に昇降させることができなくなるため、炉長方向に沿った固定ビーム１２を各分割炉床１０ａに対応した位置において分割させている。
Further, when the divided hearth 10a divided as described above is individually moved up and down by the lifting device 14, if the fixed beam 12 is continuously provided along the furnace length direction, the fixed beam 12 is Since it becomes impossible to raise and lower the divided hearth 10a individually, the fixed beam 12 along the furnace length direction is divided at a position corresponding to each divided hearth 10a.
そして、この加熱炉１において、上記のように被処理物Ｗを順々に搬送させて加熱処理させた結果、被処理物Ｗの表面から離脱されたスケールなどが炉床１０の上に堆積された場合、炉床１０の上に堆積されたスケールなどを除去するようにしている。
And in this heating furnace 1, as a result of carrying out the to-be-processed object W in order as mentioned above, and heat-processing, the scale etc. which were removed from the surface of the to-be-processed object W are deposited on the hearth 10. In such a case, scales and the like deposited on the hearth 10 are removed.
ここで、この加熱炉１においては、炉床１０の上に堆積されたスケールなどを除去するにあたり、この加熱炉１の運転を停止させて、加熱炉１内の温度をある程度低下させた時点で、図３に示すように、隣接する分割炉床１０ａの一方の分割炉床１０ａを昇降装置１４により下降させて、隣接する分割炉床１０ａ間に上下方向の隙間を形成する。そして、この隙間を通してバキューム等の清掃装置（図示せず）を下降された分割炉床１０ａの上に導き、この清掃装置により下降された分割炉床１０ａの上に堆積されたスケールなど吸引させて、下降された分割炉床１０ａの上から除去する。
Here, in the heating furnace 1, when removing scales and the like deposited on the hearth 10, the operation of the heating furnace 1 is stopped and the temperature in the heating furnace 1 is lowered to some extent. As shown in FIG. 3, one split hearth 10a of the adjacent split hearths 10a is lowered by the lifting device 14 to form a vertical gap between the adjacent split hearths 10a. Then, a cleaning device (not shown) such as a vacuum is guided onto the lowered split hearth 10a through this gap, and the scale deposited on the split hearth 10a lowered by the cleaning device is sucked. Then, it is removed from above the lowered divided hearth 10a.
次いで、上記のようにして下降させる分割炉床１０ａを順々に変更させて、各分割炉床１０ａの上に堆積されたスケールなどを上記の清掃装置により吸引させて除去し、炉床１０の上に堆積されたスケールなど清掃するようにする。
Next, the divided hearth 10a to be lowered as described above is changed in order, and the scale and the like deposited on each of the divided hearths 10a is sucked and removed by the above-described cleaning device. Clean the scales deposited on top.
なお、上記のように隣接する分割炉床１０ａの一方の分割炉床１０ａを昇降装置１４により下降させるだけではなく、図４に示すように、隣接する分割炉床１０ａの一方の分割炉床１０ａを昇降装置１４により下降させると共に、他方の分割炉床１０ａを昇降装置１４により上昇させるようにすることもできる。このようにすると、各分割炉床１０ａを昇降装置１４によって昇降させる距離を少なくした場合においても、隣接する分割炉床１０ａ間における隙間を十分に確保することができるようになる。
Not only the one divided hearth 10a of the adjacent divided hearth 10a is lowered by the elevating device 14 as described above, but also one divided hearth 10a of the adjacent divided hearth 10a as shown in FIG. Can be lowered by the lifting device 14 and the other divided hearth 10a can be lifted by the lifting device 14. If it does in this way, even when the distance which raises / lowers each division hearth 10a with the raising / lowering apparatus 14 is decreased, the clearance gap between adjacent division hearth 10a can fully be ensured now.
１ 加熱炉
２ 導入口， ２ａ 扉
３ 取出し口， ３ａ 扉
１０ 炉床， １０ａ 分割炉床
１１ 支持部材
１２ 固定ビーム
１３ 貫通部
１４ 昇降装置
１５ 炉床支柱
２０ 移動フレーム
２１ 支持部材
２２ 駆動ビーム
２３ ウォーキングビーム駆動手段
Ｓ 空間部
Ｗ 被処理物 DESCRIPTION OFSYMBOLS 1 Heating furnace 2 Inlet, 2a Door 3 Outlet, 3a Door 10 Hearth, 10a Divided hearth 11 Support member 12 Fixed beam 13 Penetration part 14 Lifting device 15 Hearth support 20 Moving frame 21 Support member 22 Drive beam 23 Walking Beam driving means S Space W Workpiece
２ 導入口， ２ａ 扉
３ 取出し口， ３ａ 扉
１０ 炉床， １０ａ 分割炉床
１１ 支持部材
１２ 固定ビーム
１３ 貫通部
１４ 昇降装置
１５ 炉床支柱
２０ 移動フレーム
２１ 支持部材
２２ 駆動ビーム
２３ ウォーキングビーム駆動手段
Ｓ 空間部
Ｗ 被処理物 DESCRIPTION OF
Claims (5)
- 炉床の下方における空間部内に設けられた炉床支柱により炉床を支持させた加熱炉において、上記の炉床を複数の区画に分割させると共に、分割された分割炉床を支持する炉床支柱の少なくとも一部に昇降装置を設け、この昇降装置により炉床支柱を介して分割炉床を昇降させることを特徴とする加熱炉。 In a heating furnace in which the hearth is supported by a hearth column provided in a space below the hearth, the hearth column is divided into a plurality of sections and supports the divided hearth. A heating furnace characterized in that an elevating device is provided in at least a part of the elevating device, and the elevating device elevates and lowers the divided hearth via a hearth column.
- 請求項１に記載の加熱炉において、分割された各分割炉床を支持する各炉床支柱にそれぞれ昇降装置を設け、各昇降装置により炉床支柱を介して各分割炉床を個別に昇降させることを特徴とする加熱炉。 The heating furnace according to claim 1, wherein a lifting device is provided for each hearth column supporting each divided hearth, and each divided hearth is individually moved up and down by the lifting device via the hearth column. A heating furnace characterized by that.
- 請求項１又は請求項２に記載の加熱炉において、隣接する分割炉床の炉床支柱に昇降装置を設け、昇降装置により炉床支柱を介して隣接する一方の分割炉床を上昇させると共に、昇降装置により炉床支柱を介して隣接する他方の分割炉床を下降させることを特徴とする加熱炉。 In the heating furnace according to claim 1 or 2, the lifting device is provided in the hearth column of the adjacent split hearth, and the adjacent one of the divided hearths is raised by the lifting device via the hearth column, A heating furnace, wherein the other divided hearth is lowered through a hearth column by a lifting device.
- 請求項１～請求項３の何れか１項に記載の加熱炉において、炉床に立設された支持部材の上に炉長方向に沿った固定ビームを設けると共に、上記の炉床の下方における空間部内に設けられた移動フレームから炉床に設けられた貫通部を通して炉床の上方に突出された支持部材の上に、ウォーキング動作を行う駆動ビームを炉長方向に沿って設け、上記の炉長方向に沿った固定ビームを分割炉床に対応して分割させたことを特徴とする加熱炉。 The heating furnace according to any one of claims 1 to 3, wherein a fixed beam along a furnace length direction is provided on a support member erected on the hearth and below the hearth. A driving beam for performing a walking operation is provided along the furnace length direction on a support member protruding above the hearth through a penetration part provided in the hearth from a moving frame provided in the space. A heating furnace characterized in that a fixed beam along the longitudinal direction is split corresponding to a split hearth.
- 請求項１～請求項４の何れか１項に記載の加熱炉内を清掃するにあたり、上記の分割炉床を昇降装置により炉床支柱を介して昇降させ、隣接する分割炉床間に上下方向の隙間を形成し、この隙間を通して加熱炉内の清掃を行うことを特徴とする加熱炉内の清掃方法。 5. When cleaning the inside of the heating furnace according to any one of claims 1 to 4, the divided hearth is moved up and down through a hearth column by an elevating device, and vertically moved between adjacent divided hearths. The heating furnace cleaning method is characterized in that the heating furnace is cleaned through the clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201280051473.3A CN103890519B (en) | 2011-10-24 | 2012-07-27 | Cleaning method in heating furnace and heating furnace |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011232577A JP5769584B2 (en) | 2011-10-24 | 2011-10-24 | Heating furnace and cleaning method in the heating furnace |
| JP2011-232577 | 2011-10-24 |
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| WO2013061663A1 true WO2013061663A1 (en) | 2013-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2012/069210 WO2013061663A1 (en) | 2011-10-24 | 2012-07-27 | Heating furnace and method for cleaning interior of heating furnace |
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| Country | Link |
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| JP (1) | JP5769584B2 (en) |
| CN (1) | CN103890519B (en) |
| WO (1) | WO2013061663A1 (en) |
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| JP5972424B1 (en) * | 2015-04-14 | 2016-08-17 | 中外炉工業株式会社 | Manufacturing method of walking beam furnace |
| CN108870957A (en) * | 2018-04-28 | 2018-11-23 | 深圳市中创镁工程技术有限公司 | Automatic heating furnace before a kind of plastisity of magnesium alloy sectional material texturing machine |
| CN109489442A (en) * | 2018-12-29 | 2019-03-19 | 巢湖云海镁业有限公司 | Smelting furnace inner wall slag-scraper |
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|---|---|---|---|---|
| JPS6152314A (en) * | 1984-08-22 | 1986-03-15 | Chugai Ro Kogyo Kaisha Ltd | Vertically driving method of split hearth type furnace |
| JPS61291887A (en) * | 1985-06-18 | 1986-12-22 | 中外炉工業株式会社 | Horizontal motion driving method of division movable hearth type furnace |
| JPH04235815A (en) * | 1991-01-16 | 1992-08-24 | Daido Steel Co Ltd | Drive of walking beam type carrier device |
| JPH11302722A (en) * | 1998-04-17 | 1999-11-02 | Nippon Steel Corp | Walking hearth type heating furnace and method for transporting material to be heated |
| JP2005315509A (en) * | 2004-04-28 | 2005-11-10 | Sumitomo Metal Ind Ltd | Method and device for removing scale on surface of beam in walking beam type furnace |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5835570B2 (en) * | 1979-08-24 | 1983-08-03 | 新日本製鐵株式会社 | Walking beam furnace |
| JPS61136614A (en) * | 1984-12-07 | 1986-06-24 | Kawasaki Heavy Ind Ltd | Billet extracting method in walking type heating furnace |
| JPH0243039Y2 (en) * | 1986-09-13 | 1990-11-15 |
-
2011
- 2011-10-24 JP JP2011232577A patent/JP5769584B2/en not_active Expired - Fee Related
-
2012
- 2012-07-27 WO PCT/JP2012/069210 patent/WO2013061663A1/en active Application Filing
- 2012-07-27 CN CN201280051473.3A patent/CN103890519B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6152314A (en) * | 1984-08-22 | 1986-03-15 | Chugai Ro Kogyo Kaisha Ltd | Vertically driving method of split hearth type furnace |
| JPS61291887A (en) * | 1985-06-18 | 1986-12-22 | 中外炉工業株式会社 | Horizontal motion driving method of division movable hearth type furnace |
| JPH04235815A (en) * | 1991-01-16 | 1992-08-24 | Daido Steel Co Ltd | Drive of walking beam type carrier device |
| JPH11302722A (en) * | 1998-04-17 | 1999-11-02 | Nippon Steel Corp | Walking hearth type heating furnace and method for transporting material to be heated |
| JP2005315509A (en) * | 2004-04-28 | 2005-11-10 | Sumitomo Metal Ind Ltd | Method and device for removing scale on surface of beam in walking beam type furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103890519A (en) | 2014-06-25 |
| JP5769584B2 (en) | 2015-08-26 |
| JP2013092262A (en) | 2013-05-16 |
| CN103890519B (en) | 2016-04-06 |
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