JPH0421819Y2 - - Google Patents
Info
- Publication number
- JPH0421819Y2 JPH0421819Y2 JP1985079690U JP7969085U JPH0421819Y2 JP H0421819 Y2 JPH0421819 Y2 JP H0421819Y2 JP 1985079690 U JP1985079690 U JP 1985079690U JP 7969085 U JP7969085 U JP 7969085U JP H0421819 Y2 JPH0421819 Y2 JP H0421819Y2
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- gas conduit
- support
- conduit
- gas
- 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
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 16
- 239000010959 steel Substances 0.000 description 16
- 239000007789 gas Substances 0.000 description 15
- 239000000567 combustion gas Substances 0.000 description 11
- 230000005855 radiation Effects 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 239000011449 brick Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案は、圧延機の前段に設置されて、スラ
ブ、ブルーム、ビレツト等の金属片を圧延温度迄
加熱する金属加熱炉に於けるスキツドマーク低減
装置に関するものである。[Detailed description of the invention] [Industrial application field] The invention is aimed at reducing skid marks in metal heating furnaces that are installed upstream of rolling mills and heat metal pieces such as slabs, blooms, and billets to rolling temperatures. It is related to the device.
［従来の技術］
製鉄圧延プロセスに於いては、被圧延材である
鋼片を圧延可能温度（1100℃〜1300℃）に加熱炉
で加熱する。この加熱工程で炉内で鋼片がサポー
トされていた部位が周囲に比べて低温となる、こ
れをスキツドマークと称する。加熱炉が備えるべ
き要件は、少ないエネルギーで鋼片を均一加熱す
ることであり、特に高級鋼板を作るためには均一
加熱が望まれる。従つて、前記したスキツドマー
クを低減することが品質の良い鋼板を得る為に不
可決となる。[Prior Art] In the steelmaking rolling process, a steel billet, which is a material to be rolled, is heated in a heating furnace to a rolling temperature (1100° C. to 1300° C.). During this heating process, the area where the steel piece was supported in the furnace becomes colder than the surrounding area, which is called a skid mark. A requirement for a heating furnace is to uniformly heat a steel billet with a small amount of energy, and uniform heating is particularly desirable for producing high-grade steel sheets. Therefore, it is essential to reduce the skid marks mentioned above in order to obtain a high quality steel plate.
斯かるスキツドマーク低減の為の従来のスキツ
ドマーク低減装置としては第６図、第７図のウオ
ーキングビーム式加熱炉に実施されたものがあ
る。 A conventional skid mark reduction device for reducing such skid marks is one implemented in the walking beam type heating furnace shown in FIGS. 6 and 7.
図中、１は被加熱材である鋼片、２は炉体、
３，４は固定の鋼片サポート、５は可動の鋼片サ
ポート、６は可動フレーム（可動手段は図示せ
ず）、ｆは鋼片の移動方向を示す矢印、ｇは固定
鋼片サポート３，４の支持部位切替位置を示す。
又、Ｘは固定鋼片サポート３の支持部位、Ｙは固
定鋼片サポート４の支持部位を示す。 In the figure, 1 is a steel piece which is a material to be heated, 2 is a furnace body,
3 and 4 are fixed billet supports, 5 is a movable billet support, 6 is a movable frame (movable means not shown), f is an arrow indicating the moving direction of the billet, g is a fixed billet support 3, 4 shows the support part switching position.
Further, X indicates a supported portion of the fixed steel billet support 3, and Y indicates a supported portion of the fixed steel billet support 4.
上記ウオーキングビーム加熱炉に於いて、鋼片
１は炉体２内で矢印ｆの方向に移動しながら加熱
される。ところが前記鋼片サポート３は冷却媒体
により冷却されている為、該鋼片サポート３との
接触部位Ｘは他の部位より低温となる。その低温
部（スキツドマーク）を解消する為炉出口近くの
ｇ点で鋼片サポート３を打切り、それ以後炉出口
迄は支持部位をＹとした別の鋼片サポート４で支
持し、前記支持部位Ｘを冷却から解放する様にし
てスキツドマークの回復を図つている。 In the above-mentioned walking beam heating furnace, the steel piece 1 is heated while moving in the direction of the arrow f within the furnace body 2. However, since the steel billet support 3 is cooled by a cooling medium, the contact portion X with the steel billet support 3 is lower in temperature than other portions. In order to eliminate the low temperature part (skid mark), the steel billet support 3 is cut off at point g near the furnace exit, and from then on, it is supported by another steel billet support 4 whose support part is Y, and the support part is X. We are trying to recover the skid mark by releasing it from cooling.
然し、切替位置ｇが炉出口からあまりに離れて
いると新な支持部位Ｙが鋼片サポート４で冷却さ
れ別のスキツドマークとなる虞れがある。この
為、切替点ｇは炉出口に近くせざるを得ず、支持
部位Ｘのスキツドマークが充分に回復できない。 However, if the switching position g is too far away from the furnace outlet, there is a risk that the new support portion Y will be cooled by the billet support 4 and will become another skid mark. For this reason, the switching point g has to be close to the furnace outlet, and the skid mark at the support portion X cannot be sufficiently recovered.
この支持部位Ｘのスキツドマーク低減する為の
従来の装置としては、第８図、第９図に示すもの
がある。 As a conventional device for reducing skid marks at the support portion X, there is one shown in FIGS. 8 and 9.
第８図、第９図中第６図、第７図のものと同一
のものには同符号を付してあり、第８図、第９図
中７は開放端を有する輻射管、８は助燃バーナ、
９は炉出口側壁、１０はドアを示す。 Components in FIGS. 8 and 9 that are the same as those in FIGS. 6 and 7 are given the same reference numerals. In FIGS. 8 and 9, 7 is a radiation tube with an open end, and 8 is a radiation tube with an open end. auxiliary burner,
Reference numeral 9 indicates a side wall of the furnace outlet, and reference numeral 10 indicates a door.
該従来例では、鋼片サポート３と鋼片サポート
５との間（支持部位Ｘの近傍）に炉出口側壁９よ
り輻射管７を延出せしめ、助燃バーナ８での燃焼
熱を輻射管７を介してスキツドマーク部（支持部
位Ｘ）附近に集中的に投入し、スキツドマークの
回復を図つている。 In this conventional example, a radiation pipe 7 is extended from the furnace outlet side wall 9 between the steel billet support 3 and the steel billet support 5 (near the support portion Through this method, the liquid is intensively injected into the vicinity of the skid mark portion (support portion X) in an attempt to recover the skid mark.
［考案が解決しようとする問題点］
然し乍ら、前記輻射管７は高温となる為セラミ
ツク製でありヒートシヨツクに弱い性質を持って
いる。又、炉出口からはドア１０の開閉による外
冷空気の浸入、更に鋼片抽出機のアームが炉内に
挿入されるなど炉出口近傍は急激な温度降下があ
る。従つて、輻射管７は急冷されヒートシヨツク
を受け、又輻射加熱に供する長い水平部を有する
為輻射管の破損寿命が短いという問題がある。[Problems to be Solved by the Invention] However, the radiation tube 7 is made of ceramic and is susceptible to heat shock because of its high temperature. Furthermore, there is a sudden temperature drop in the vicinity of the furnace exit due to the intrusion of externally cooled air from the furnace exit due to the opening and closing of the door 10, and the insertion of the arm of the billet extractor into the furnace. Therefore, since the radiant tube 7 is rapidly cooled and subjected to a heat shock, and has a long horizontal portion subjected to radiant heating, there is a problem that the radiant tube has a short failure life.
［問題点を解決するための手段］
本考案は上記した問題点を解決すべくなしたも
のであつて、炉出口側壁又は炉床壁の下部より炉
内の斜上方に向つてセラミツク製ガス導管を急傾
斜で延出せしめ、該ガス導管の先端部に下向き角
α5°〜15°で且長さＬがガス導管の直径Ｄの１〜３
倍程度のエルボウ部を形成して助燃ガスを略水平
に噴射せしめる様に構成したうえ、前記エルボウ
部及びガス導管の炉内に位置する部分にセラミツ
クフアイバー等の断熱材を巻き付け且炉内側にそ
の導管のサポートを備えたものである。[Means for Solving the Problems] The present invention has been made to solve the above-mentioned problems, and includes a ceramic gas conduit that extends obliquely upward into the furnace from the lower part of the furnace outlet side wall or the hearth wall. is extended at a steep slope, the tip of the gas conduit has a downward angle α5° to 15°, and the length L is 1 to 3 of the diameter D of the gas conduit.
In addition to forming an elbow portion approximately twice the size of the combustion gas and injecting auxiliary gas almost horizontally, a heat insulating material such as ceramic fiber is wrapped around the elbow portion and the portion of the gas conduit located inside the furnace, and the insulating material is wrapped inside the furnace. It is equipped with conduit support.
［作用］
エルボウ部より噴射された高温の助燃ガスは、
金属片のスキツド部に沿つて流れ、該スキツド部
を直接且効果的に加熱して回復解消する。[Effect] The high temperature auxiliary combustion gas injected from the elbow part,
It flows along the skid part of the metal piece and directly and effectively heats the skid part to recover and eliminate it.
［実施例］ 以下図面に基づき本考案の実施例を説明する。[Example] Embodiments of the present invention will be described below based on the drawings.
尚、第１図〜第４図に於いて第６図〜第９図に
示したものと同一のものには同符号を付してあ
る。 Components in FIGS. 1 to 4 that are the same as those shown in FIGS. 6 to 9 are given the same reference numerals.
炉出口側壁９の下部より炉内の斜め上方に向つ
て燃焼ガス導管１１を急傾斜で延出せしめ、その
先端部を水平方向に屈曲させてエルボウ部１２を
形成し、該エルボウ部１２は下向角α（5°≦α≦
15°）とする。又、前記ガス導管１１の炉内露出
部にセラミツクフアイバー等の断熱材１３を巻き
付け、先端部を炉底に立設したサポート１５によ
つて支持する。該サポート１５は水冷パイプ構造
とし高温のガス導管１１に直接接触する台座１６
は耐火物製とする。該サポート１５はガス導管１
１を基部、先端部で支持して構造的安定を図る為
のものである。 A combustion gas conduit 11 is made to extend obliquely upward into the furnace from the lower part of the furnace outlet side wall 9, and its tip is bent in the horizontal direction to form an elbow part 12. Heading angle α (5°≦α≦
15°). Further, a heat insulating material 13 such as ceramic fiber is wrapped around the exposed part of the gas conduit 11 in the furnace, and the tip thereof is supported by a support 15 erected at the bottom of the furnace. The support 15 has a water-cooled pipe structure and has a pedestal 16 in direct contact with the high temperature gas pipe 11.
shall be made of refractory material. The support 15 is connected to the gas conduit 1
1 at the base and tip to ensure structural stability.
ガス導管１１より助燃バーナ８からの燃焼ガス
１４をスキツドマークのある鋼片下面に導き、燃
焼ガス１４によつてスキツドマークを直接加熱す
る。而して、スキツドマークは考案の燃焼ガスに
よつて直接加熱されるので短時間で効果的に回復
する。 The combustion gas 14 from the auxiliary combustion burner 8 is guided through the gas conduit 11 to the lower surface of the steel piece where the skid mark is located, and the skid mark is directly heated by the combustion gas 14. Since the skid marks are directly heated by the invented combustion gas, they can be effectively recovered in a short period of time.
又、前記した様に炉出口附近は外冷気がドア１
０の開閉により浸入しガス導管１１を急冷するが
断熱材１３が巻付けられているので導管１１のヒ
ートシヨツクは大幅に低減される。 Also, as mentioned above, outside cold air near the furnace exit is
The heat shock of the gas conduit 11 is greatly reduced because the heat insulating material 13 is wrapped around the gas conduit 11.
尚、燃焼ガス１４は浮力により上昇する性質が
あるためエルボウ部１２の下向き角αを5°〜15°
にすると効果的である。又、エルボウ部１２の長
さは、燃焼ガス１４が略水平に流れさえすればで
きるだけ短い方が経済的であり、構造的にもより
安定で破損も少ない。エルボウ部１２の長さＬは
ガス導管１１の直径Ｄの１〜３倍程度が望まし
い。 In addition, since the combustion gas 14 has the property of rising due to buoyancy, the downward angle α of the elbow portion 12 should be set at 5° to 15°.
It is effective to do so. Furthermore, it is economical to make the length of the elbow portion 12 as short as possible as long as the combustion gas 14 flows approximately horizontally, and it is also more stable structurally and less likely to be damaged. The length L of the elbow portion 12 is desirably about 1 to 3 times the diameter D of the gas conduit 11.
更に第５図はガス導管１１の他の支持構造を示
すもので、スペースに余裕がある場合は、大型の
異形組合せレンガ１５′を積上げ、耐火物製の柱
状サポート１５としてもよい。 Furthermore, FIG. 5 shows another support structure for the gas conduit 11, and if there is sufficient space, large irregularly shaped combination bricks 15' may be piled up to form a columnar support 15 made of refractory material.
［考案の効果］
以上述べた如く本考案によれば下記の如き優れ
た効果を発揮し得る。[Effects of the invention] As described above, according to the present invention, the following excellent effects can be exhibited.
（） 助燃バーナの高温燃焼ガスをセラミツク
導管でスキツドマーク低温部附近に集中的に導
くことにより、輻射管で間接的に加熱するより
早く効率よく低温部を回復解消することができ
る。() By concentrating the high-temperature combustion gas of the auxiliary burner near the low-temperature part of the skid mark through the ceramic conduit, the low-temperature part can be recovered and eliminated more quickly and efficiently than by indirect heating with the radiation pipe.
（） ガス導管先端エルボウ部長さを短くでき
るので、経済的である上破損事故が少なく寿命
が長い。() Since the length of the elbow at the end of the gas pipe can be shortened, it is economical, has fewer breakage accidents, and has a long life.
（） ガス導管は断熱してあるので外冷気によ
るヒートシヨツクを柔げ破損を防ぎ寿命を長く
することができる。() Since the gas conduit is insulated, it softens the heat shock caused by the cold air outside, preventing damage and extending its life.
第１図は本考案を実施したウオーキングビーム
式加熱炉の部分図、第２図は第１図のＡ−Ａ矢視
図、第３図は本考案の実施例を示す説明図、第４
図は第３図のＢ−Ｂ矢視図、第５図はサポートの
他の例を示す説明図、第６図は従来例の説明図、
第７図は第６図のＣ−Ｃ矢視図、第８図は従来の
他の例を示す説明図、第９図は第８図のＥ−Ｅ矢
視図である。
９は炉出口側壁、１１は燃焼ガス導管、１２は
エルボウ部、１３は断熱材、１４は燃焼ガスを示
す。
FIG. 1 is a partial view of a walking beam heating furnace in which the present invention is implemented, FIG.
The figure is a BB arrow view in Fig. 3, Fig. 5 is an explanatory diagram showing another example of support, Fig. 6 is an explanatory diagram of a conventional example,
7 is a view taken along the line C--C in FIG. 6, FIG. 8 is an explanatory view showing another conventional example, and FIG. 9 is a view taken along the line E--E in FIG. 8. 9 is a furnace outlet side wall, 11 is a combustion gas conduit, 12 is an elbow portion, 13 is a heat insulating material, and 14 is a combustion gas.
Claims (1)
に向つてセラミツク製ガス導管を急傾斜で延出せ
しめ、該ガス導管の先端部に下向き角αが5°〜
15°で且長さＬがガス導管の直径Ｄの１〜３倍程
度のエルボウ部を形成して助燃ガスを略水平に噴
出せしめる様に構成したうえ、前記エルボウ部及
びガス導管の炉内に位置する部分にセラミツクフ
アイバー等の断熱材を巻き付け且炉内側にその導
管のサポートを備えたことを特徴とする金属加熱
炉のスキツドマーク低減装置。 A ceramic gas conduit is extended obliquely upward into the furnace from the lower part of the furnace outlet side wall or the hearth wall, and the tip of the gas conduit has a downward angle α of 5° or more.
An elbow portion having an angle of 15° and a length L of approximately 1 to 3 times the diameter D of the gas conduit is formed so that the auxiliary gas is ejected almost horizontally, and the elbow portion and the gas conduit are connected to the inside of the furnace. A skid mark reduction device for a metal heating furnace, characterized in that a heat insulating material such as ceramic fiber is wrapped around the located part and a support for the conduit is provided inside the furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985079690U JPH0421819Y2 (en) | 1985-05-28 | 1985-05-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985079690U JPH0421819Y2 (en) | 1985-05-28 | 1985-05-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61198259U JPS61198259U (en) | 1986-12-11 |
| JPH0421819Y2 true JPH0421819Y2 (en) | 1992-05-19 |
Family
ID=30624835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985079690U Expired JPH0421819Y2 (en) | 1985-05-28 | 1985-05-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0421819Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2523861Y2 (en) * | 1990-05-22 | 1997-01-29 | 住金マネジメント株式会社 | Furnace skid mark removal burner |
| KR101075910B1 (en) | 2003-12-23 | 2011-10-26 | 주식회사 포스코 | Water seal device for working beam in reheating furnace |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58213827A (en) * | 1982-06-08 | 1983-12-12 | Ishikawajima Harima Heavy Ind Co Ltd | Shadow mark reducer of heating furnace for metallic piece |
-
1985
- 1985-05-28 JP JP1985079690U patent/JPH0421819Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58213827A (en) * | 1982-06-08 | 1983-12-12 | Ishikawajima Harima Heavy Ind Co Ltd | Shadow mark reducer of heating furnace for metallic piece |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61198259U (en) | 1986-12-11 |
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