JPS632546A - High temperature cast slab drawing in continuous casting - Google Patents
High temperature cast slab drawing in continuous castingInfo
- Publication number
- JPS632546A JPS632546A JP14476086A JP14476086A JPS632546A JP S632546 A JPS632546 A JP S632546A JP 14476086 A JP14476086 A JP 14476086A JP 14476086 A JP14476086 A JP 14476086A JP S632546 A JPS632546 A JP S632546A
- Authority
- JP
- Japan
- Prior art keywords
- slab
- cast slab
- heat
- heating
- combustion burner
- 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
- 238000009749 continuous casting Methods 0.000 title claims description 8
- 238000002485 combustion reaction Methods 0.000 claims abstract description 22
- 238000007711 solidification Methods 0.000 claims abstract description 11
- 230000008023 solidification Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 21
- 230000005855 radiation Effects 0.000 abstract description 5
- 239000002737 fuel gas Substances 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- 238000009792 diffusion process Methods 0.000 abstract 1
- 230000006698 induction Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、連続ＰＩ造機内で、鋳片を加熱して高温出片
する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of heating a slab in a continuous PI machine to hot-stripe it.
従来の技術
近年、連続鋳造された鋳片を加熱炉を経由させず圧延機
に直送し、鋼材成品を得る技術が一般化しており、この
とき、正味時の鋳片温度を一定しペル以上に確保するた
め、ヌ表面疵の発生防止のため連鋳機内の鋳片を保温、
加熱することが行なわれている。Conventional technology In recent years, it has become common to send continuously cast slabs directly to a rolling mill without passing through a heating furnace to obtain steel products. To ensure this, the slabs in the continuous caster are kept warm to prevent surface flaws.
Heating is being done.
例えば、特開昭５７−１９９５３３号公報には、鋳片の
未凝固末端を含めた部位、即ち最終の成形ローラーと切
断機との間に保温、保熱部を設け、未凝固部の潜熱を熱
源として表面近傍を昇温し、鋳片全体を均一にすること
が開示されている。そして保温、保熱部は、断熱材で１
うか、誘導加熱装置を用いることが記載されている。For example, in Japanese Patent Application Laid-Open No. 57-199533, a heat retaining part is provided between the final forming roller and the cutting machine, including the unsolidified end of the slab, and the latent heat of the unsolidified part is removed. It is disclosed that the temperature near the surface is raised as a heat source to make the entire slab uniform. And heat retention, heat retention part is 1 with insulation material.
However, it is described that an induction heating device is used.
又、特開昭５８−６５５５５号公報には、高周波誘導加
熱装置を用いて、二次冷却後の鋳片表層を溶解温度以上
に加熱することで、鋳片表面性状の改善を計ることが開
示されている。Furthermore, JP-A-58-65555 discloses that the surface properties of the slab can be improved by heating the surface layer of the slab after secondary cooling to a temperature higher than the melting temperature using a high-frequency induction heating device. has been done.
その他、本発明に関する他の技術として、特開昭８０−
２２３９０９号公報には、耐火通気性固体を燃焼ガスで
高温に加熱し、その放射熱で被加熱物を加熱することに
より熱効率を高める、面燃焼バーナーの一種である高温
輻射パネルバーナーが示されている。In addition, as other techniques related to the present invention, JP-A-80-
Publication No. 223909 discloses a high-temperature radiant panel burner, which is a type of surface combustion burner, which increases thermal efficiency by heating a refractory breathable solid to a high temperature with combustion gas and heating an object to be heated with the radiant heat. There is.
発明が解決しようとする問題慨
しかし、このような従来の技術は夫々次のような問題点
を有する。前記特開昭５７−１９９５３３号公報に示さ
れた技術には、保温、加熱の手段として単に１ＩｉＱ材
で覆うか、誘導加熱装置を用いることが記されているの
みであり、前者の断熱材で覆うだけでは鋳片からの放散
熱を完全に遮断出来ない為、連鋳機からの高温出片には
限界がある。Problems to be Solved by the Invention However, each of these conventional techniques has the following problems. The technique disclosed in JP-A-57-199533 only mentions that the means for heat retention and heating is simply covering with 1IiQ material or using an induction heating device; Since it is not possible to completely block the heat radiated from the slab by simply covering it, there is a limit to the amount of high-temperature slabs that can be discharged from the continuous casting machine.
又、後者の誘導加熱装置による加熱は、凝固シェルの急
速加熱用としては適するが、内部に未凝固部を有する凝
固過程での使用は、未凝固部がもつ潜熱を鋳片外殻の凝
固シェルへ伝導拡散させるのを妨げ、効率的な方法とは
言えない、更に誘導加熱装置は電力を使用するので、コ
スト上不利である。In addition, although heating using the latter induction heating device is suitable for rapid heating of the solidified shell, when used in a solidification process that has an unsolidified part inside, the latent heat of the unsolidified part is transferred to the solidified shell of the slab outer shell. In addition, induction heating devices use electric power, which is disadvantageous in terms of cost.
又特開昭５８−１’１５５５５号公報に開示の技術は、
鋳片表層の表面性状改善が目的であり、本発明のごとく
、鋳片の未凝固潜熱を利用して鋳片全体を均一高温に保
持するものとは異なる。The technology disclosed in Japanese Patent Application Laid-open No. 58-1'15555 is
The purpose of this method is to improve the surface properties of the surface layer of the slab, and is different from the method of the present invention, which utilizes the unsolidified latent heat of the slab to maintain the entire slab at a uniform high temperature.
更に特開昭６０−２２３９０９号公報に開示の技術は加
熱の一手段を示したに過ぎない。Furthermore, the technique disclosed in Japanese Patent Application Laid-Open No. 60-223909 merely shows one means of heating.
問題点を解決するための手段
本発明は、前記の状況に鑑みなされたもので、鋼の連続
鋳造において、鋳片内部に未凝固部が存在する凝固末期
の鋳片の周囲に面燃焼バーナーを配置し、該面燃焼バー
ナーによる鋳片外部からの加熱と、未凝固鋳片の潜熱を
鋳片外殻の凝固シェルに拡散させることにより、鋳片全
体を均一かつ高温に保持して連続鋳造機から出片するこ
とを特徴とするものである。Means for Solving the Problems The present invention has been made in view of the above-mentioned situation, and is a method of installing a surface combustion burner around a slab at the final stage of solidification in which an unsolidified portion exists inside the slab in continuous steel casting. By heating the slab from the outside using the surface combustion burner and diffusing the latent heat of the unsolidified slab into the solidified shell of the slab outer shell, the entire slab is maintained at a uniform and high temperature, and the continuous casting machine It is characterized by being extruded from.
以下図面を参照しながら本発明を詳述する。The present invention will be described in detail below with reference to the drawings.
第１図は、本発明の実施例に用いる連続鋳造装置全体の
説明図であり１図中１は鋳片、２−１．２−２ 、２−
３は面燃焼バーナー、３は保温カバー、４は燃料ガスパ
イプ、５は空気パイプ、６は未凝固部、７は取鍋、８は
タンデイツシュ、９は詩聖を表わす。FIG. 1 is an explanatory diagram of the entire continuous casting apparatus used in the embodiment of the present invention, in which 1 is a slab, 2-1, 2-2, 2-
3 represents a surface combustion burner, 3 represents a heat insulating cover, 4 represents a fuel gas pipe, 5 represents an air pipe, 6 represents an unsolidified part, 7 represents a ladle, 8 represents a tundish, and 9 represents a poet.
図に示すように本発明は鋳片ｌの凝固末期部に面燃焼バ
ーナー２−１．２−２．２−３を配置したものであるが
、この面燃焼バーナーは、前記した数に限られるもので
はなく、１個でも良いし、複数個設けても良い０面燃焼
バーナーの設置位置としては鋳片の凝固率（凝固横断面
積／全横断面積）が５０〜１００％未満の部位が好まし
い。As shown in the figure, in the present invention, surface combustion burners 2-1.2-2.2-3 are arranged at the final stage of solidification of the slab l, but the number of surface combustion burners is limited to the number described above. The installation position of the zero-plane combustion burner, which may be one or more than one, is preferably at a site where the solidification rate (solidification cross-sectional area/total cross-sectional area) of the slab is 50 to less than 100%.
凝固率が５０％未満では、凝固シェルの発達が不充分で
、かつＭ岸自体が十分高温であり加熱の必要はなく、
１００％以上の部位では、未凝固部分が存在しないので
未凝［！ｉｔ鋳片の潜熱を利用できず無意味である。尚
凝固−１ｍ １００％以上の鋳片については 従来の手
段で保温するのが良い。If the solidification rate is less than 50%, the development of the solidified shell is insufficient, and the M bank itself is at a sufficiently high temperature, so there is no need for heating.
In the area of 100% or more, there is no uncoagulated part, so there is no uncoagulated [! It is meaningless because the latent heat of the IT slab cannot be used. For slabs with solidification of 100% or more, it is best to keep them warm by conventional means.
第２図は、第１図に示す面燃焼バーナー２−１のＡ−Ａ
矢視の断面図であり、９片１を囲んで一ヒ下左右に面燃
焼バーナー２−１を配置し、その間を保温カバー３で連
結したものである。夫々の面燃焼バーナー２−１には、
燃料ガスパイプ４、空気パイプ５を備え燃料及び空気を
導入し、内部で燃焼させ、内部の耐火ｄ気性固体を高温
に加熱し、その放射熱を鋳片１の各面に放射し、均一に
加熱するものである。FIG. 2 shows A-A of the surface combustion burner 2-1 shown in FIG.
This is a cross-sectional view taken in the direction of the arrows, in which surface combustion burners 2-1 are arranged on the left and right sides of the lower part surrounding nine pieces 1, and the space between them is connected by a heat insulating cover 3. Each surface combustion burner 2-1 includes
Equipped with a fuel gas pipe 4 and an air pipe 5, fuel and air are introduced and combusted internally to heat the refractory solid inside to a high temperature, and the radiant heat is radiated to each surface of the slab 1 to uniformly heat it. It is something to do.
面燃焼バーナーは、その構造−ヒ燃焼空間がバーナー自
体に内蔵されており、鳩の放射面が平面であるので、広
い範囲、広い面積にわたって均一な熱放射が可能である
。この点ガスバーナーのような一点から熱放射するもの
と大きく異なるものである。The structure of a surface combustion burner is that the combustion space is built into the burner itself, and the radiation surface of the surface is flat, so it is possible to radiate heat uniformly over a wide range and area. In this respect, it is very different from a gas burner that radiates heat from a single point.
又、面燃焼バーナーは、バーナー面自体が高輝度の輻射
面を有しており、バーナー面温度を被加熱物の表面温度
より高く維持することにより、鋳片からの放散熱を完全
にしり断し、また若干の表面への加熱が達成される。In addition, in surface combustion burners, the burner surface itself has a high-intensity radiation surface, and by maintaining the burner surface temperature higher than the surface temperature of the object to be heated, it completely cuts off the heat radiated from the slab. However, some surface heating is also achieved.
この方法によれば、未凝固部潜熱が、外部に放散される
ことなく、凝固シェルに蓄熱され、均一かつ高温の鋳片
を得ることが出来る。According to this method, the latent heat of the unsolidified portion is stored in the solidified shell without being dissipated to the outside, and a slab having a uniform and high temperature can be obtained.
発明の効果
本発明は以上説明したように、鋳片の凝固末期における
未凝固鋳片の潜熱を有効に利用し、又面燃焼バーナーに
より鋳片外面の放熱を防ぎ、かつ均一に加熱するので、
鋳片全体が均一でしかも高温状態に保持できる。それに
より連鋳機を出たあと圧延工程での鋳片温度を高位に保
つことができる。Effects of the Invention As explained above, the present invention effectively utilizes the latent heat of the unsolidified slab at the final stage of solidification, prevents heat radiation from the outer surface of the slab, and uniformly heats the slab using a surface combustion burner.
The entire slab can be maintained at a uniform and high temperature. This allows the temperature of the slab to be maintained at a high level during the rolling process after leaving the continuous caster.
又、面燃焼バーナーの利点として、従来のガスバーナー
などに比べ、設置スペースを小さくでき、狭い場所でも
設置が容易であると共に、電気加熱に比ベコスト面で有
利である。Further, as an advantage of a surface combustion burner, compared to a conventional gas burner, etc., the installation space can be reduced, it is easy to install even in a narrow place, and it is advantageous in terms of cost compared to electric heating.
第１図は本発明の実施例に用いられる連続鋳造装置全体
説明図、第２図は第１図のＡ−Ａ矢視の断面図である。
ｌ串・・鋳片、２−１ 、２−２ 、２−３０・会面燃
焼バーナー、３・・争保温カバー、４・・・燃料ガスパ
イプ、５Φ・・空気パイプ、６・・・未凝固部、７・・
拳取鍋、８＠・やタンデイツシュ、９・・・鋳型。FIG. 1 is an overall explanatory diagram of a continuous casting apparatus used in an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1. L skewer: Slab, 2-1, 2-2, 2-30: Surface combustion burner, 3: Heat insulation cover, 4: Fuel gas pipe, 5Φ: Air pipe, 6: Unsolidified part ,7...
Fist ladle, 8@・ya tandaitsu, 9...mold.
Claims (1)
凝固末期の鋳片の周囲に面燃焼バーナーを配置し、該面
燃焼バーナーによる鋳片外部からの加熱と、未凝固鋳片
の潜熱を鋳片外殻の凝固シェルに拡散させることにより
、鋳片全体を均一かつ高温に保持して連続鋳造機から出
片することを特徴とする連続鋳造における高温出片方法
。In continuous casting of steel, a surface combustion burner is placed around a slab at the final stage of solidification where there is an unsolidified part inside the slab, and the surface combustion burner heats the slab from the outside and heats up the latent heat of the unsolidified slab. A high-temperature casting method in continuous casting, characterized in that the entire slab is maintained at a uniform and high temperature by dispersing it into the solidified shell of the slab outer shell, and then the slab is discharged from a continuous casting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14476086A JPS632546A (en) | 1986-06-23 | 1986-06-23 | High temperature cast slab drawing in continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14476086A JPS632546A (en) | 1986-06-23 | 1986-06-23 | High temperature cast slab drawing in continuous casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS632546A true JPS632546A (en) | 1988-01-07 |
Family
ID=15369761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14476086A Pending JPS632546A (en) | 1986-06-23 | 1986-06-23 | High temperature cast slab drawing in continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS632546A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010523335A (en) * | 2007-04-03 | 2010-07-15 | エス・エム・エス・ジーマーク・アクチエンゲゼルシャフト | Burner equipment |
| JP2012528720A (en) * | 2009-06-03 | 2012-11-15 | エスエムエス・コンキャスト・アーゲー | Method and apparatus for guiding and directing billets in a continuous casting facility for large size circular profiles |
-
1986
- 1986-06-23 JP JP14476086A patent/JPS632546A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010523335A (en) * | 2007-04-03 | 2010-07-15 | エス・エム・エス・ジーマーク・アクチエンゲゼルシャフト | Burner equipment |
| JP2012528720A (en) * | 2009-06-03 | 2012-11-15 | エスエムエス・コンキャスト・アーゲー | Method and apparatus for guiding and directing billets in a continuous casting facility for large size circular profiles |
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