JPS60125B2 - Metal piece end heating device - Google Patents
Metal piece end heating deviceInfo
- Publication number
- JPS60125B2 JPS60125B2 JP9257678A JP9257678A JPS60125B2 JP S60125 B2 JPS60125 B2 JP S60125B2 JP 9257678 A JP9257678 A JP 9257678A JP 9257678 A JP9257678 A JP 9257678A JP S60125 B2 JPS60125 B2 JP S60125B2
- Authority
- JP
- Japan
- Prior art keywords
- metal piece
- heating device
- straightening
- roll
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Description
【発明の詳細な説明】
本発明は帯状または板状の金属片端部加熱装置に係わり
、詳しくは熱間ストリップ圧延における中間圧延材ある
いはスラブの端部を加熱する装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for heating the end of a strip or plate-shaped metal piece, and more particularly to a device for heating the end of an intermediately rolled material or slab in hot strip rolling.
一般に、熱間圧延において、粗圧延機で圧延される前、
あるいは粗圧延機から仕上圧延機に噛込まれるまでに、
金属片の端部は板中方向中央部に比較して温度降下が大
である。Generally, in hot rolling, before being rolled in a rough rolling mill,
Or, from the rough rolling mill to the finishing rolling mill,
The temperature drop at the ends of the metal piece is greater than at the center in the direction of the plate.
従って鋼種によっては圧延により金属片に耳割れ、耳あ
れ等の欠陥を生じるとともに、製品の品質、生産能率の
面などで問題を生じる。このような事を防止するように
、金属片の橋部はエッジヒーターと呼ばれる端部加熱装
置で加熱されている。Therefore, depending on the type of steel, rolling may cause defects such as edge cracks and roughness in the metal piece, as well as problems in terms of product quality and production efficiency. To prevent this, the bridge portion of the metal piece is heated with an edge heating device called an edge heater.
この端部加熱装置として、トランスバース・フラツクス
・ヒーティング型インダクタ一や、ロンジテューデイナ
ル・ヒーティング型インダクター等の電気的な端部加熱
装置が採用されているが、この装置で金属片の端部を所
要の加熱温度に加熱するには金属片端部と端部加熱装置
の加熱コイルとの間隔(以下ェアギャップと云う)を一
定に保つ事が肝要であり、また加熱エネルギー面から効
率的に加熱するにはェアギャツプの間隔はできるだけ小
さい方が望ましい。一方、熱間圧延においては、被圧延
材たる金属片の先端あるいは後端は上下方向の反り現象
を呈することが多々あるが、従来の端部加熱装置には金
属片の上下方向の反りあるいは変形を矯正する矯正装置
は設けられていないので、前記ェアギャップを一定に出
来ないばかりでなく、特に反りの程度が大であるときは
金属片の先端あるいは後端をある長さにわたって加熱で
きず、さらに、このようなことからェァギャッブは必要
以上に大きく設定せざるを得ず、加熱エネルギーを余分
に要していた。As this end heating device, electrical end heating devices such as transverse flux heating type inductors and longitudinal heating type inductors are used. In order to heat the end of the metal piece to the required heating temperature, it is important to maintain a constant distance between the end of the metal piece and the heating coil of the end heating device (hereinafter referred to as the air gap). For heating purposes, it is desirable that the air gaps be as small as possible. On the other hand, in hot rolling, the leading or trailing edge of the metal piece being rolled often exhibits vertical warpage, but conventional edge heating devices do not allow the metal piece to warp or deform in the vertical direction. Since there is no straightening device for straightening the air gap, it is not only impossible to keep the air gap constant, but also, especially when the degree of warping is large, it is not possible to heat the tip or rear end of the metal piece over a certain length. For this reason, the air gap had to be set larger than necessary, and extra heating energy was required.
本発明は前記問題点を解決するものであって、端部加熱
装置の前方または前後に矯正装置を設けて、該矯正装置
で金属片の先端・後端等の上下方向の反りあるいは変形
を矯正するとともに、端部加熱装置の前後の金属片移送
路を上下方向から挟んで設けた通板ガイドで金属片を案
内して、ェアギャツプを一定に保ちながら端部加熱装置
で熱効率よく、金属片の端部を加熱するものである。The present invention solves the above-mentioned problems by providing a straightening device in front of or before and after the end heating device, and using the straightening device to correct vertical warping or deformation of the tip, rear end, etc. of the metal piece. At the same time, the metal pieces are guided by threading guides provided above and below the metal piece transfer path before and after the edge heating device, and the edge heating device thermally efficiently transfers the metal pieces while keeping the air gap constant. The ends are heated.
次に本発明を図面で示す一実施例に基づき詳細に説明す
る。図面において、1は端部を加熱される金属片で例え
ば熱間圧延での中間圧延材あるいはスラブであって、テ
ーフルローラー2で移送される。Next, the present invention will be explained in detail based on an embodiment shown in the drawings. In the drawings, reference numeral 1 denotes a metal piece whose end is heated, such as an intermediately rolled material or a slab in hot rolling, and is transported by a table roller 2.
このテーフルローラー2群により金属片移送路3が形成
される。4は端部加熱装置で、金属片1の両端部を加熱
するように金属片移送路3を挟んで対岐して設けられ、
その背面に加熱制御器5が設けられている。A metal piece transfer path 3 is formed by the two groups of tabular rollers. Reference numeral 4 denotes an end heating device, which is provided to be bifurcated across the metal piece transfer path 3 so as to heat both ends of the metal piece 1.
A heating controller 5 is provided on the back surface thereof.
6は前記端部加熱装置4を金属片1端部に倣わせるため
の倣いロールで、前記機部加熱装置4の前方と後方に設
けられている。Reference numeral 6 denotes copying rolls for making the end heating device 4 follow the end of the metal piece 1, which are provided in front and behind the machine heating device 4.
7は装置台で前記端部加熱装置4、加熱制御器5および
倣いロール6が敦遣されていて、該装置台7自体が台車
8上をショートストローク用シリンダー9により移動さ
れるように構成されていて、端部加熱装置4は倣いロー
ル6と一体的に金属片移送路3に進退自在である。Reference numeral 7 denotes a device stand on which the end heating device 4, heating controller 5, and copying roll 6 are mounted, and the device stand 7 itself is configured to be moved on a cart 8 by a short stroke cylinder 9. The end heating device 4 can move forward and backward into the metal piece transfer path 3 integrally with the copying roll 6.
1Q‘ま前記台車8を移動させる移動軸で、例えば逆ネ
ジが設けられた軸であり、該移動軸10は前記金属片移
送路3を横切って設けられていて、回転駆動機11によ
る回転力を減速機12を介して伝達して該移動軸10を
回転させ、前記台車8を金属片1端部側に移動させるも
ので、云わゆるプリセット機構を形成している。1Q' is a moving shaft for moving the trolley 8, for example, a shaft provided with a reverse thread. is transmitted through the reducer 12 to rotate the moving shaft 10 and move the cart 8 toward the end of the metal piece 1, forming a so-called preset mechanism.
この台車8の移動手段はこの実施例に限ることなく、台
車8を金属片1端部‘こ対して進退自在‘こ移動できれ
‘ま他の手段例えばシリンダー等を使用できる。13は
金属片1の上下方向の反り等の変形を矯正する矯正ロー
ルで、中間部をピン止めされた転回アーム14の先端に
回転自在に設けられ、前記転回アーム14の他端に設け
たバネ15の弾性力によって、矯正力が付与され、金属
片1がテーフルローラ−2の上に位置するようになって
いる。The means for moving the trolley 8 is not limited to this embodiment, and the trolley 8 can be moved forward and backward relative to the end of the metal piece 1, or other means such as a cylinder may be used. Reference numeral 13 denotes a straightening roll for correcting deformations such as vertical warping of the metal piece 1, which is rotatably provided at the tip of a rotating arm 14 whose intermediate portion is pinned, and a spring provided at the other end of the rotating arm 14. A straightening force is applied by the elastic force of 15, and the metal piece 1 is positioned above the tapered roller 2.
16は前記バネ15および転回アーム14を設けるスタ
ンドである。16 is a stand on which the spring 15 and the rotating arm 14 are installed.
前記矯正ロール13、転回アーム14およびバ床15に
より矯正装置17が構成される。この矯正装置17はこ
の実施例こ限定されることなく、例えばロール軸○をず
らしてロールを複数個設置した矯正装置であってもよい
。矯正装置17は前記端部加熱装置4の前方、あるいは
前後方に設けられるが、この実施例では前後方の両側に
設けた場合を示している。なお、矯正ロール13を端部
加熱装置4の前方および後方に設ける場合、後方矯正ロ
ールは、低温の金属片等を前方矯正ロールで矯正しても
スプリングバック等で上に反ることがあるので「その反
りを押える為と、前方矯正ロールで矯正出来なかった反
りを矯正する目的をもつ。18は通板ガイドで、前記端
部加熱装置4が設けられている金属片移送路3を上下方
向から挟むように設置されており、金属片1の入側と出
側の上部通板ガイド18一1は上方にはねあがり、金属
片1の先端あるいは後端が通板しやすし、ようになって
いる。A straightening device 17 is constituted by the straightening roll 13, the turning arm 14, and the floor 15. The straightening device 17 is not limited to this embodiment, and may be a straightening device in which a plurality of rolls are installed with the roll axes ○ being shifted, for example. The straightening device 17 is provided in front of the end heating device 4, or at the front and rear sides, and in this embodiment, the case is shown in which it is provided at both the front and rear sides. Note that when the straightening rolls 13 are provided in front and behind the end heating device 4, the rear straightening rolls may warp upward due to springback etc. even if the low-temperature metal pieces are straightened by the front straightening rolls. The purpose is to suppress the warpage and to correct the warp that could not be corrected by the front straightening roll. Reference numeral 18 denotes a sheet passing guide that guides the metal piece conveying path 3 in which the end heating device 4 is installed in the vertical direction. The upper threading guides 18-1 on the entry and exit sides of the metal piece 1 spring upward, making it easier for the tip or rear end of the metal piece 1 to pass through the metal piece 1. ing.
該上部通板ガイド18−1は前記矯正ロール13の小軽
部13一1を通して設置されている。19は金属片1の
通板をスムーズにするとともにたれの防止をする中央補
助ロールで、前記端部加熱装置4の設置位置の下方に設
けられていて「2川まその回転駆動機である。The upper plate passing guide 18-1 is installed through the small light portion 13-1 of the straightening roll 13. Reference numeral 19 denotes a central auxiliary roll that smoothes the threading of the metal piece 1 and prevents it from sagging, and is installed below the installation position of the end heating device 4.
この中央補助ロール19は端部加熱装置4の進退に際し
、干渉しない様に、両端部は小径で中央部が大径となっ
た凸状の金属片支持ロールである。金属片1の温度が高
いかあるいは厚みが薄く、テーフルローラー間隔の広い
端部加熱装置進退部分で、頭部または尾部が下に垂れる
おそれがある場合に、この中央補助ロール19を設ける
ことが望ましい。21は前記矯正ロール13の回転駆動
機であり、22は前記矯正ロール13上部通板ガイド1
8−1を非常時に上方に逃がすための進退駆動機で、矯
正ロール13の矯正力調整用にも使用できる。This central auxiliary roll 19 is a convex metal piece supporting roll having a small diameter at both ends and a large diameter at the center so as not to interfere with the end heating device 4 when it moves forward and backward. This central auxiliary roll 19 may be provided when the metal piece 1 is high in temperature or thin and there is a risk that the head or tail may droop downward at the end heating device advance/retreat portion where the tapered roller interval is wide. desirable. 21 is a rotation drive machine for the straightening roll 13; 22 is a rotational drive machine for the straightening roll 13;
This is a forward/backward drive device for moving the roller 8-1 upward in an emergency, and can also be used to adjust the straightening force of the straightening roll 13.
この構成は以上のようであり、次にその作用について述
べる。This configuration is as described above, and its operation will be described next.
金属片1の板中は予めわかるので、プリセツト機構を形
成する回転駆動機11を作動させて、端部加熱装置4を
金属片1の板中より少し広めの間隔に配置しておく。Since the inside of the metal piece 1 is known in advance, the rotary drive machine 11 forming the preset mechanism is operated to place the end heating devices 4 at a slightly wider interval than the inside of the metal piece 1.
そこで先端が上方に反った金属片1が端部加熱装置4側
に移送されてくると、別途設けられた材料検出器(図示
しない)からの信号でショートストローク用シリンダー
9を作動させ、倣いロール6が金属片1端部に接するま
で前進させる。上方に反った先端は上部通板ガイド18
−1に案内されて、矯正ロール13へとさらに移送され
る。このとき矯正ロール13にはバネ15で矯正力が付
与されているので上方への反りは該矯正ロール13で矯
正され平坦になる。ここで例えば金属片1の反りが大で
あるときはバネ15で付与される矯正力も対応して大き
くなるので、反り量を矯正するに最適な矯正力が自動的
に付与される。反りを矯正された金属片1は通板ガイド
18に案内されながら、端部加熱装置4のコ字状に形成
された加熱コイル4ーー,4一2間を通板され、該加熱
コイル4ーー,4−2により所定温度に端部が加熱され
る。When the metal piece 1 with the tip curved upward is transferred to the edge heating device 4 side, the short stroke cylinder 9 is actuated by a signal from a separately provided material detector (not shown), and the copying roll is 6 is moved forward until it touches the end of the metal piece 1. The upwardly curved tip is the upper threading guide 18
-1, and further transferred to the straightening rolls 13. At this time, since a straightening force is applied to the straightening roll 13 by the spring 15, the upward warp is corrected by the straightening roll 13 and the sheet becomes flat. Here, for example, when the warpage of the metal piece 1 is large, the straightening force applied by the spring 15 also becomes correspondingly large, so that the optimum straightening force for correcting the amount of warpage is automatically applied. The metal piece 1 whose warpage has been corrected is guided by the sheet passing guide 18 and passed between the U-shaped heating coils 4, 4 and 2 of the end heating device 4, and then passed between the heating coils 4, 4 and 2 of the end heating device 4. , 4-2, the end portion is heated to a predetermined temperature.
本発明によると上方または下方の反りは矯正ロール13
で矯正されて平坦になるとともに通板ガイド18で案内
されてくるので、端部加熱装置4の加熱コイル4−1,
4−2に金属片1が当ることなく、全くスムーズに通板
される。そのため加熱コイル4一1,4一2と金属片1
端部の間隔(ェアギャップ)は一定範囲内に保たれるの
で、熱効率よく加熱することができる。また加熱コイル
4ーー,4−2には高電圧で大電流が一般に流されるの
で、その保護のために端部加熱装置4の金属片移送路3
側に保護ガイド23を設けると、加熱コイル4−1,4
−2の保護が図れる。本発明では端部加熱装置4の前後
に該端部加熱装置4と一体的に移動する倣いロール6を
設けているので、金属片1端部に端部加熱装置4が精度
よく倣い、加熱コイル4−1,4−2での端部加熱作用
が一段とよくなる。According to the present invention, the upward or downward warpage is corrected by the straightening roll 13.
The heating coils 4-1 and 4 of the end heating device 4 are straightened and flattened and guided by the passing guide 18.
The metal piece 1 does not hit 4-2, and the metal piece 1 is passed completely smoothly. Therefore, the heating coils 4-1, 4-2 and the metal piece 1
Since the distance between the ends (air gap) is maintained within a certain range, heating can be performed with high thermal efficiency. In addition, since a high voltage and a large current are generally passed through the heating coils 4-- and 4-2, the metal piece transfer path 3 of the end heating device 4 is used to protect the heating coils 4-- and 4-2.
When the protective guide 23 is provided on the side, the heating coils 4-1, 4
-2 protection can be achieved. In the present invention, since the copying roll 6 that moves integrally with the end heating device 4 is provided before and after the end heating device 4, the end heating device 4 accurately copies the end of the metal piece 1, and the heating coil The end heating effect at 4-1 and 4-2 is further improved.
以上述べた如くで本発明では端部加熱装置4の前方ある
いは前後方に矯正装置17を設け、さらに通板ガイド1
8を設けているので、ヱアギャップは一定に保つことが
できるとともに、熱効率よく端部を加熱することができ
る。As described above, in the present invention, the straightening device 17 is provided in front of the end heating device 4, or in the front and back of the sheet passing guide 1.
8, the air gap can be kept constant and the end portion can be heated with good thermal efficiency.
なお、本発明装置の配置位置は、熱間粗圧延機の前方、
あるいは熱間粗圧延機と熱間仕上圧延機の間、熱間仕上
圧延機間など任意の個所に配置することができる。図面
の簡単な説明第1図は本発明の一実施例における平面図
、第2図は第1図におけるF−F断面図、第3図は第1
図におけるG−G断面図。In addition, the installation position of the present invention device is in front of the hot rough rolling mill,
Alternatively, it can be placed at any arbitrary location, such as between a hot rough rolling mill and a hot finishing mill, or between hot finishing mills. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of one embodiment of the present invention, FIG. 2 is a sectional view taken along line FF in FIG. 1, and FIG.
GG sectional view in the figure.
1:金属片、2:テーフルローフ−、3:金属片移送路
、4:端部加熱装置、4−1,4一2:加熱コイル、5
:加熱制御器、6:倣いロール、7:装置台、8:台車
、9:ショートストローク用シリンダー、10:移動軸
、11:回転駆動機、12:減速機、13:矯正ロール
、14:転回アーム、15:バネ、16:スタンド、1
7:矯正装置、18:通板ガイド、18−1:上部通板
ガイド、19:中央補助ロール、20,21:回転駆動
機、22:進退駆動機、23:保護ガイド。1: metal piece, 2: table loaf, 3: metal piece transfer path, 4: end heating device, 4-1, 4-2: heating coil, 5
: Heating controller, 6: Copying roll, 7: Equipment stand, 8: Cart, 9: Short stroke cylinder, 10: Moving shaft, 11: Rotation drive machine, 12: Reducer, 13: Straightening roll, 14: Turning Arm, 15: Spring, 16: Stand, 1
7: straightening device, 18: sheet passing guide, 18-1: upper sheet passing guide, 19: central auxiliary roll, 20, 21: rotary drive machine, 22: advance/retreat drive machine, 23: protection guide.
第2図 第1図 第3図Figure 2 Figure 1 Figure 3
Claims (1)
より大きく開口した連続体からなる通板ガイドを設け、
前記通板ガイドの伸延する範囲内に、前記移送路に対向
して倣いロールを進退自在に設け、前記倣いロールの動
きに合わせて進退する端部加熱装置を対向して設け、前
記加熱装置の前方あるいは前方と後方に、金属片の上下
方向の変形を矯正する矯正ロールを上下動可能かつ回転
可能に設けたことを特徴とする金属片の端部加熱装置。1. Provide a sheet passing guide consisting of a continuous body that sandwiches the metal piece transfer path from above and below and has an entrance and exit section that is larger than the central section.
A copying roll is provided in an extending range of the sheet threading guide so as to be movable back and forth in opposition to the transfer path, and an end heating device that moves back and forth in accordance with the movement of the copying roll is provided opposite to the end heating device. 1. A device for heating an end of a metal piece, characterized in that a straightening roll for correcting vertical deformation of the metal piece is provided in the front or in the front and rear so as to be vertically movable and rotatable.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9257678A JPS60125B2 (en) | 1978-07-31 | 1978-07-31 | Metal piece end heating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9257678A JPS60125B2 (en) | 1978-07-31 | 1978-07-31 | Metal piece end heating device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5521511A JPS5521511A (en) | 1980-02-15 |
JPS60125B2 true JPS60125B2 (en) | 1985-01-05 |
Family
ID=14058249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9257678A Expired JPS60125B2 (en) | 1978-07-31 | 1978-07-31 | Metal piece end heating device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60125B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5927118A (en) * | 1996-05-28 | 1999-07-27 | Nkk Corporation | Method for making hot-rolled steel sheet and apparatus therefor |
JP2007175755A (en) * | 2005-12-28 | 2007-07-12 | Toshiba Mitsubishi-Electric Industrial System Corp | Induction heating apparatus |
-
1978
- 1978-07-31 JP JP9257678A patent/JPS60125B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5521511A (en) | 1980-02-15 |
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