JPS62182585A - Roller hearth type heating furnace - Google Patents
Roller hearth type heating furnaceInfo
- Publication number
- JPS62182585A JPS62182585A JP2487486A JP2487486A JPS62182585A JP S62182585 A JPS62182585 A JP S62182585A JP 2487486 A JP2487486 A JP 2487486A JP 2487486 A JP2487486 A JP 2487486A JP S62182585 A JPS62182585 A JP S62182585A
- Authority
- JP
- Japan
- Prior art keywords
- heated
- roller
- furnace
- heating furnace
- 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.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 title claims description 29
- 239000000463 material Substances 0.000 claims description 53
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Tunnel Furnaces (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］
この発明は、炉内に配したローラ上にて被加熱材を移動
させつつ、その被加熱材を加熱するローラハース式加熱
炉に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a roller hearth type heating furnace that heats a material to be heated while moving the material on rollers arranged in the furnace. .
［従来の技術］
従来より、この種のローラハース式加熱炉としては、厚
板、形鋼、管などを５００〜１１５０℃に加熱して、熱
処理（焼きたらし、焼き入れ、焼き戻し、焼鈍）するた
めの加熱炉がある。その加熱炉の構成例を第３図に示す
。[Prior Art] Traditionally, this type of roller hearth heating furnace has been used to heat thick plates, shaped steel, pipes, etc. to 500 to 1150°C and perform heat treatment (tempering, quenching, tempering, annealing). There is a heating furnace for heating. An example of the configuration of the heating furnace is shown in FIG.
図において１は炉本体であり、その内部には、被加熱材
Ｗを載せて図中の左右方向に移動させる複数のローラ２
が配されている。また、炉内には、被加熱材Ｗの上方お
よび下方に位置して、その上下面を加熱するバーナ３が
装備されている。In the figure, 1 is a furnace main body, inside which there are a plurality of rollers 2 on which the material to be heated W is placed and moved in the left-right direction in the figure.
are arranged. Moreover, burners 3 are installed in the furnace, located above and below the material to be heated W, and heating the upper and lower surfaces of the material to be heated.
このような構成により、被加熱材Ｗをローラ２上に載せ
て移動させつつ、それを加熱する。With such a configuration, the material to be heated W is placed on the roller 2 and moved while being heated.
［発明が解決しようとする問題点］
ところが、上述した従来の加熱炉の場合、炉内に配され
るローラは、被加熱材Ｗの下側に位置するローラ２だけ
であるため、次のような問題があった。[Problems to be Solved by the Invention] However, in the case of the conventional heating furnace described above, the only roller disposed in the furnace is the roller 2 located below the material to be heated W. There was a problem.
■炉内においては、被加熱材Ｗの上方にはバーナ３のみ
が位置し、一方、被加熱材の下方にはバーナ３と共にロ
ーラ２が位置するため、被加熱材Ｗの」二下面に対して
は入熱量が異なることになり、それがため、被加熱材Ｗ
の変形、加熱の不均一が生じて、品質が不均一となる。■In the furnace, only the burner 3 is located above the material to be heated W, while the roller 2 is located below the material to be heated together with the burner 3. The amount of heat input will be different depending on the heating material W.
Deformation and uneven heating occur, resulting in uneven quality.
■被加熱材Ｗの形状が管や形鋼である場合には、板状で
ある場合に比して加熱中の変形が大きく、それが炉壁、
天井、ローラ２などに当たって、破損を生じることがあ
る。そして、それらに破損を生じた場合には、矯正のた
めに多くの費用を要した。■When the shape of the material to be heated W is a pipe or a section steel, the deformation during heating is larger than when it is a plate shape, which causes the furnace wall,
It may hit the ceiling, roller 2, etc. and cause damage. If they are damaged, a lot of money is required to correct them.
■被加熱材Ｗがクラツド板のように、上下に異種金属を
貼りあわせた材料である場合には、その熱変形が大きく
、熱処理後における矯正が困難となることがあった。(2) When the material to be heated W is a material such as a clad plate in which dissimilar metals are bonded on the upper and lower sides, the thermal deformation of the material is large and correction after heat treatment is sometimes difficult.
この発明は、このような従来の問題を解決するものであ
る。This invention solves these conventional problems.
［問題点を解決するための手段］
この発明のローラハース式加熱炉は、炉内に配したロー
ラ上にて被加熱材を移動させつつ、その被加熱材を加熱
するローラハース式加熱炉において、炉内に、被加熱材
を載せて移動させる下側ローラと、この下側ローラの」
１方に位置して被加熱材の上面に圧接する上側ローラと
を備えたことを特徴としている。[Means for Solving the Problems] The roller hearth heating furnace of the present invention heats the material while moving the material on rollers disposed in the furnace. a lower roller on which the material to be heated is placed and moved;
It is characterized by comprising an upper roller located on one side and pressed against the upper surface of the material to be heated.
［作用］
この発明のローラハース式加熱炉は、上下のローラ間に
て被加熱材を挾みつつ移動させる間に、その被加熱材の
変形を抑えて、」−下均一に加熱する。[Function] The roller hearth type heating furnace of the present invention suppresses deformation of the heated material while moving the heated material between the upper and lower rollers, and uniformly heats the heated material.
［実施例］
以下、この発明の一実施例を第１図、第２図に基づいて
説明する。[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 and 2.
図中４は炉本体であり、その壁部には、被加熱材Ｗを出
し入れするドアー５，５が備えられている。炉内には、
被加熱材Ｗの移動方向に沿って並ぶように、」−下部の
ローラ６．７が複数組配されており、それら」１下のロ
ーラ６．７の間にて被加熱材Ｗを挾むようになっている
。これら」１下のローラ６．７は耐熱鋼等によって成る
。また、炉内には、被加熱材Ｗを必要温度に加熱するバ
ーナ８とラジアントチコープ９が備えられている。In the figure, 4 is a furnace main body, and its wall is provided with doors 5, 5 through which the material to be heated W is taken in and taken out. Inside the furnace,
A plurality of sets of lower rollers 6.7 are arranged so as to be lined up along the moving direction of the heated material W, and the heated material W is sandwiched between the lower rollers 6.7. It has become. These lower rollers 6.7 are made of heat-resistant steel or the like. Further, the furnace is provided with a burner 8 and a radiant coil 9 for heating the material W to be heated to a required temperature.
下部ローラ７は、軸受１０．１０によって炉本体４の定
位置に支えられており、駆動機構１１によって回転駆動
されるようになっている。一方、」一部ローラ６は、軸
受１２，１２によって支えられており、自在継手１３を
介して駆動機構１１に連結されて、下部ローラ７と反対
の方向に回転されるようになっている。更に、軸受１２
．１２はスプリング１４によって支えられており、被加
熱材Ｗの厚さに応じて」二部ローラ６が上下に変位でき
るようになっている。この上部ローラ６の上下変位に伴
って生じる炉本体４の隙間部分には、その隙間を閉じる
ソール装置１５．１５が備えられている。このシール装
置１５としては、金属ベローズ、耐熱布ベローズ、水シ
ール、ラビリンスシール等を採用することができる。The lower roller 7 is supported in a fixed position in the furnace body 4 by bearings 10.10, and is adapted to be rotationally driven by a drive mechanism 11. On the other hand, the partial roller 6 is supported by bearings 12, 12, and is connected to a drive mechanism 11 via a universal joint 13 so as to be rotated in the opposite direction to the lower roller 7. Furthermore, the bearing 12
．． 12 is supported by a spring 14, and the two-part roller 6 can be moved up and down depending on the thickness of the material W to be heated. A sole device 15.15 is provided in a gap in the furnace body 4 that occurs due to the vertical displacement of the upper roller 6 to close the gap. As this seal device 15, a metal bellows, a heat-resistant cloth bellows, a water seal, a labyrinth seal, etc. can be adopted.
また、本例の場合は、上部ローラ６を積極的に」１下変
位させるために、その軸受１２．１２を昇降させる昇降
装置１６を備えている。Further, in this example, in order to actively displace the upper roller 6 by 1", an elevating device 16 for elevating and lowering its bearings 12 and 12 is provided.
次に、作用について説明する。Next, the effect will be explained.
上下のローラ６．７は、被加熱材Ｗを挾んだ状態のまま
、同期して互いに逆の方向に回転することにより、その
被加熱材Ｗを第２図中紙面の表裏方向に移動させる。そ
の際、上側ローラ６は、液加熱材Ｗ１または昇降機構１
１によって押し上げられて、所定の力で被加熱材Ｗの上
面に圧接する。The upper and lower rollers 6.7 synchronously rotate in opposite directions while holding the heated material W between them, thereby moving the heated material W in the front and back directions of the paper in FIG. . At that time, the upper roller 6 is heated by the liquid heating material W1 or the lifting mechanism 1.
1 and presses against the upper surface of the heated material W with a predetermined force.
したがって、被加熱材Ｗは」−下のローラ６．７の間に
て挾持されたまま移動し、そしてバーナ８とラジアント
チューブ９によって所定の温度にまで加熱されて、熱処
理される。Therefore, the material W to be heated moves while being held between the lower rollers 6.7, and is heated to a predetermined temperature by the burner 8 and the radiant tube 9, thereby being heat-treated.
このように被加熱材Ｗは、上側ローラ６から適当な荷重
が加えられたまま熱処理される。したがって、被加熱材
Ｗの変形が抑えられることになる。In this manner, the material to be heated W is heat-treated while an appropriate load is applied from the upper roller 6. Therefore, deformation of the heated material W is suppressed.
ところで、被加熱材Ｗを加熱する手段としては、バーナ
８とラジアントチューブ９との併用の他、バーナ８のみ
を用いてもよい。被加熱材Ｗの加熱中の酸化、およびそ
れに伴うピックアップを防止する上においては、ラジア
ントチコープ９による間接加熱方式を採用して、炉内に
雰囲気ガスを流すことがよい。By the way, as means for heating the material to be heated W, the burner 8 and the radiant tube 9 may be used in combination, or the burner 8 alone may be used. In order to prevent oxidation of the material to be heated W during heating and the accompanying pickup, it is preferable to adopt an indirect heating method using the radiant coil 9 and to flow atmospheric gas into the furnace.
また、上側ローラ６を上下に変位させるためにカウンタ
ーウェイト等を用いてもよく、被加熱材Ｗの種類に応じ
て種々の昇降装置１６を採用することが可能である。Further, a counterweight or the like may be used to vertically displace the upper roller 6, and various lifting devices 16 may be employed depending on the type of material W to be heated.
［発明の効果］
以」二説明したように、この発明のローラハース式加熱
炉は、上下のローラ間にて被加熱材を挾みつつ移動させ
て、その被加熱材を加熱する構成であるから、次のよう
な効果を奏する。[Effects of the Invention] As explained below, the roller hearth type heating furnace of the present invention is configured to heat the material by moving the material to be heated while sandwiching it between the upper and lower rollers. , has the following effects.
■被加熱材の」１下両方の位置にローラが存在するため
、被加熱材の」二下面への加熱程度が同一となり、熱処
理による被加熱材の品質が向」ニする。(2) Since the rollers are present at both positions below the material to be heated, the degree of heating to the bottom surface of the material to be heated is the same, and the quality of the material to be heated by heat treatment is improved.
■被加熱材の」二下面への加熱程度が同じであるため、
被加熱材の変形が生じない。一般には、被加熱材が変形
すると、その上下面に対する加熱が益々不均一となって
、更に大きな変形が起こる。■Since the degree of heating on the two lower surfaces of the material to be heated is the same,
No deformation of the heated material occurs. Generally, when a material to be heated is deformed, the heating on its upper and lower surfaces becomes increasingly uneven, resulting in even greater deformation.
この発明によれば、このような事態を回避することがで
きる。被加熱材の変形を抑えるために必要な力は、被加
熱材が高温となって軟化する程小さくなる。According to the present invention, such a situation can be avoided. The force required to suppress the deformation of the heated material becomes smaller as the heated material becomes hotter and softens.
■形鋼やクラツド鋼のように変形しやすい被加熱材に対
してもその熱変形を抑えることができるため、熱処理後
の矯正が不要となる。■It is possible to suppress thermal deformation of materials to be heated that are easily deformed, such as shaped steel and clad steel, so straightening after heat treatment is not necessary.
■被加熱材の変形による炉内耐火物、ドアー、天井、ロ
ーラ等の破損を無くすことができる。■It is possible to eliminate damage to furnace refractories, doors, ceilings, rollers, etc. due to deformation of heated materials.
第１図、第２図はこの発明の一実施例を示し、第１図は
被加熱材の移動方向に沿う断面図、第２図は第１図の■
−■線に沿う断面図である。
第３図は従来の加熱炉の断面図である。
４・・・・・・炉本体、 ６・・・・・上側ローラ、７
・・・・・・下側ローラ、 Ｗ・・・・・・被加熱材。
出願人 石川島播磨重工業株式会社
第２図
第３図1 and 2 show one embodiment of the present invention, FIG. 1 is a cross-sectional view along the moving direction of the heated material, and FIG. 2 is a cross-sectional view of FIG.
It is a cross-sectional view along the -■ line. FIG. 3 is a sectional view of a conventional heating furnace. 4... Furnace body, 6... Upper roller, 7
...Lower roller, W...Material to be heated. Applicant Ishikawajima Harima Heavy Industries Co., Ltd. Figure 2 Figure 3
Claims (1)
の被加熱材を加熱するローラハース式加熱炉において、
炉内に、被加熱材を載せて移動させる下側ローラと、こ
の下側ローラの上方に位置して被加熱材の上面に圧接す
る上側ローラとを備えたことを特徴とするローラハース
式加熱炉。In a roller hearth type heating furnace that heats the material while moving it on rollers placed in the furnace,
A roller hearth type heating furnace comprising: a lower roller on which a material to be heated is placed and moved; and an upper roller positioned above the lower roller and pressed against the upper surface of the material to be heated. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61024874A JPH0713554B2 (en) | 1986-02-06 | 1986-02-06 | Roller hearth heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61024874A JPH0713554B2 (en) | 1986-02-06 | 1986-02-06 | Roller hearth heating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62182585A true JPS62182585A (en) | 1987-08-10 |
| JPH0713554B2 JPH0713554B2 (en) | 1995-02-15 |
Family
ID=12150348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61024874A Expired - Lifetime JPH0713554B2 (en) | 1986-02-06 | 1986-02-06 | Roller hearth heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0713554B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007212011A (en) * | 2006-02-07 | 2007-08-23 | Ngk Insulators Ltd | Seal structure between roller and roller insertion hole in roller hearth kiln |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59159201A (en) * | 1983-03-02 | 1984-09-08 | Ishikawajima Harima Heavy Ind Co Ltd | Continuous hardening line of steel sheet |
-
1986
- 1986-02-06 JP JP61024874A patent/JPH0713554B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59159201A (en) * | 1983-03-02 | 1984-09-08 | Ishikawajima Harima Heavy Ind Co Ltd | Continuous hardening line of steel sheet |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007212011A (en) * | 2006-02-07 | 2007-08-23 | Ngk Insulators Ltd | Seal structure between roller and roller insertion hole in roller hearth kiln |
| JP4486934B2 (en) * | 2006-02-07 | 2010-06-23 | 日本碍子株式会社 | Seal structure between roller and roller insertion hole in roller hearth kiln |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0713554B2 (en) | 1995-02-15 |
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