JPS6254378B2 - - Google Patents
Info
- Publication number
- JPS6254378B2 JPS6254378B2 JP8277383A JP8277383A JPS6254378B2 JP S6254378 B2 JPS6254378 B2 JP S6254378B2 JP 8277383 A JP8277383 A JP 8277383A JP 8277383 A JP8277383 A JP 8277383A JP S6254378 B2 JPS6254378 B2 JP S6254378B2
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- floater
- nozzle
- pair
- hot air
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 52
- 239000010959 steel Substances 0.000 claims description 52
- 208000034699 Vitreous floaters Diseases 0.000 claims description 38
- 238000007664 blowing Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- NDKWCCLKSWNDBG-UHFFFAOYSA-N zinc;dioxido(dioxo)chromium Chemical compound [Zn+2].[O-][Cr]([O-])(=O)=O NDKWCCLKSWNDBG-UHFFFAOYSA-N 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/63—Continuous furnaces for strip or wire the strip being supported by a cushion of gas
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、鋼板を連続的に熱処理するフローテ
イング炉の熱風流に乗せて鋼板を浮かせるフロー
ターのフローターノズルに関するものであり、特
に本発明は連続的熱処理ライン等において熱風流
に乗せて鋼板を浮かせるフローターノズルに関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a floater nozzle for a floater that floats a steel plate by placing it on a stream of hot air in a floating furnace that continuously heat-treats a steel plate. This relates to a floater nozzle that floats a steel plate on the flow.
例えば、塗装鋼板連続製造ラインにおいては、
塗料を鋼板に塗布した後、塗料を鉄板に焼付ける
ためにオーブンと呼ばれる熱処理炉を通板させる
処理が行われている。このような製造ラインの例
を図面を用いて次に説明する。 For example, in a continuous production line for painted steel plates,
After paint is applied to a steel plate, the steel plate is passed through a heat treatment furnace called an oven in order to bake the paint onto the steel plate. An example of such a manufacturing line will be explained next using the drawings.
第１図は塗料を塗布・焼付けして製造するジン
クリツチプライマー鋼板の製造装置中のジンクロ
メタル製造ラインの配置側面図である。１はアン
コイラー、２はアツプカツトシヤー、３はウエル
ダー、４は脱脂設備、５は入側ルーパー、６は研
磨ブラシであつて、以上の諸設備による前処理が
終つた鋼板は第１コーター７によりダクロメツト
と言われる第１回目の塗料が塗布され、第１オー
ブン９において焼付けされた後、第２コーター８
によりジンクロメートと言われる第２回目の塗料
が塗布され、第２オーブン１０において焼付けさ
れた後、水冷設備１１によつて冷却される。その
後塗装鋼板は、レベラー１２、テンパーカラー研
磨手段１３、出側ルーパー１４、外観検査手段１
５等を経てオイラー１６、分割シヤー１７を通過
後、コイラー１８に巻き取られる。 FIG. 1 is a side view of the layout of a zinc chrome metal manufacturing line in a manufacturing apparatus for zinc-rich primer steel sheets manufactured by coating and baking paint. 1 is an uncoiler, 2 is an up-cut shear, 3 is a welder, 4 is a degreasing equipment, 5 is an entrance looper, and 6 is a polishing brush. After the pretreatment with the above-mentioned equipment, the steel plate is transferred to a first coater 7. After the first coating called Dacromet is applied and baked in the first oven 9, the second coater 8
A second coating called zinc chromate is applied, baked in a second oven 10, and then cooled by a water cooling facility 11. After that, the painted steel plate is processed by a leveler 12, a temper color polishing means 13, an outlet looper 14, and an appearance inspection means 1.
After passing through the oiler 16 and the split shear 17, it is wound up by the coiler 18.
前記製造ラインにおいて、第１オーブン９、第
２オーブン１０には、炉長の短縮、省エネルギ
ー、さらにロールによる鋼板への疵発生防止等の
諸目的から、従来の鋼板のロールによる支持方式
を止めてフローター方式と言われる鋼板の支持方
式を装備したオーブンが採用されるようになつ
た。このフローター方式はノズルのスリツトより
吹出される熱風流により鋼板を浮かせるものであ
つて、第２図の縦断面図によつて示されるよう
に、鋼板２３を挾んで上下対称にそれぞれフロー
ターノズル１９、ヒートトランスフアーノズル２
０が互に隣接して設けられ、前記ノズル１９，２
０のそれぞれのスリツト２１，２１；２２より吹
出される300℃以上の熱風流に上下より挾まれて
鋼板は浮きかつ加熱される。 In the production line, the first oven 9 and the second oven 10 are equipped with a conventional method of supporting the steel plate using rolls, for various purposes such as shortening the furnace length, saving energy, and preventing the occurrence of scratches on the steel plate due to the rolls. Ovens equipped with a steel plate support system called the floater system began to be adopted. In this floater method, a steel plate is floated by a hot air stream blown out from a slit in a nozzle.As shown in the longitudinal cross-sectional view of FIG. 2, floater nozzles 19, 19, Heat transfer nozzle 2
0 are provided adjacent to each other, and the nozzles 19, 2
The steel plate is floated and heated by being sandwiched from above and below by a stream of hot air of 300°C or more blown out from each of the slits 21, 21; 22 of 0.
第３図の下方フローターノズル１９と鋼板２３
との関係を示す斜視図によつてわかるように、従
来の下方フローターノズル１９は、連続して走行
する鋼板２３の下側に設けられた函状体であつ
て、四角形状をなす前記函状体の上面で、鋼板２
３の進行方向に直角に、鋼板のほぼ全巾に相当す
る長さに亘つて上面の中央部を挾んで互に向き合
つて熱風を吹出す１対のスリツト２１，２１が設
けられてなる。鋼板が熱風流により浮かされてい
る時の形状は第４図の断面図によつて示されるよ
うにＣぞりと称されている弓なりとなつており、
同上図に点線により示す平らな形状とはならない
ため、鋼板は巾方向中央部の高い個所の上面及び
両端部の下面が炉の入口や出口及び上方・下方フ
ローターノズル１９又はヒートトランスフアーノ
ズル２０に接触して塗装板の塗装面に疵が生ず
る。この疵は鋼板の巾が広いほど発生率が高くな
る。すなわちノズル１９の構造の欠陥がこの疵の
発生の大きな原因の１つである。 Lower floater nozzle 19 and steel plate 23 in FIG. 3
As can be seen from the perspective view showing the relationship between On the upper surface of the body, steel plate 2
A pair of slits 21, 21 are provided perpendicularly to the traveling direction of the steel plate over a length corresponding to almost the entire width of the steel plate, sandwiching the center of the upper surface and facing each other to blow out hot air. The shape of the steel plate when it is suspended by the hot air current is a bow shape, which is called a C-sled, as shown in the cross-sectional view of Figure 4.
Since the steel plate does not have a flat shape as shown by the dotted line in the above figure, the upper surface of the high part in the center in the width direction and the lower surface of both ends are connected to the inlet and outlet of the furnace and the upper and lower floater nozzles 19 or heat transfer nozzles 20. Contact will cause scratches on the painted surface of the painted board. The incidence of this flaw increases as the width of the steel plate increases. That is, a defect in the structure of the nozzle 19 is one of the major causes of the occurrence of this flaw.
本発明は、前記欠陥を排除・改善したフロータ
ーノズルを提供することを目的とするものであつ
て、特許請求の範囲記載のフローターノズルを提
供することによつて前記目的を達成することがで
きる。 The object of the present invention is to provide a floater nozzle that eliminates and improves the above defects, and the above object can be achieved by providing the floater nozzle described in the claims.
すなわち本発明は、鋼板を連続的に熱処理する
フローテイング炉に設けられるフローターの上面
が四角形状をなすフローターノズルにおいて：前
記フローターノズルの上面の相対する辺に平行に
１対づつ合計で４個の熱風吹出し用のスリツトが
設けられており、前記スリツトのうち１対は鋼板
の進行方向に、他の１対は鋼板の進行方向に直角
に設けられており；前記フローターノズルの上面
と底面のそれぞれの中央部において両面を貫通す
るように垂設された筒が設けられており；前記ス
リツトより鋼板に向けて吹出される熱風の１部が
前記筒内を経てノズルの系外に排出されるように
してなるフローターノズルに関するものである。 That is, the present invention provides a floater nozzle in which the upper surface of the floater is square, which is installed in a floating furnace for continuously heat-treating steel sheets: A total of four floaters, one pair each parallel to opposite sides of the upper surface of the floater nozzle, are arranged in parallel to opposite sides of the upper surface of the floater nozzle. Slits for blowing out hot air are provided, one pair of the slits are provided in the direction of movement of the steel plate, and the other pair are provided at right angles to the direction of movement of the steel plate; respectively on the top and bottom surfaces of the floater nozzle. A vertical tube is provided in the center of the tube so as to penetrate both sides; a portion of the hot air blown from the slit toward the steel plate is discharged outside the nozzle system through the inside of the tube. This relates to a floater nozzle made of
次に本発明を詳細に説明する。 Next, the present invention will be explained in detail.
本発明者は、従来のフローターノズルにおいて
は走行する鋼板の中央部下面に熱風の圧力が集中
して中央部を必要以上に押し上げ、巾端部下面の
熱風は同端部押し上げ力を発揮する割合が少く無
駄に放散されて両巾端部は所定位置より下がつて
鋼板のＣぞりが発生し、Ｃぞりが塗装面に発生す
る疵の大きな原因であることから、前記中央部の
熱風の圧力の集中を排除し、巾端部の垂れ下がり
に対しては熱風流の吹付けによる動的圧力を付与
して補償することにより鋼板を平らにすれば前記
疵の発生を防止できることに想到し、種々タイプ
のフローターノズルを製作し実験を重ねた結果、
構造が簡単であり製作も容易なＣぞりが発生しな
い本発明のフローターノズルを完成するに至つ
た。 The present inventor has discovered that in conventional floater nozzles, the pressure of hot air concentrates on the lower surface of the center of the traveling steel plate, pushing up the center more than necessary, and the hot air on the lower surface of the width end exerts a pushing force on the same end. The hot air in the central part is emitted in vain and the ends of both widths fall below the specified position, causing C warping of the steel plate. Since C warping is a major cause of scratches on painted surfaces, We have come up with the idea that the above-mentioned flaws can be prevented by flattening the steel plate by eliminating the concentration of pressure on the steel plate and by applying dynamic pressure by blowing hot air to compensate for the sagging at the width end. As a result of manufacturing various types of floater nozzles and conducting repeated experiments,
The floater nozzle of the present invention, which has a simple structure, is easy to manufacture, and does not cause C warpage, has been completed.
以下、本発明の図面を参照しながら説明する。 Hereinafter, the present invention will be explained with reference to the drawings.
第５図は本発明のフローターノズルの斜視図、
第６図は同上正面図である。フローターノズル１
９は連続して走行する鋼板２３の下側に設けられ
る函状体であつて、四角形状をなす前記函状体の
上面の相対する辺に平行に１対づつ合計４個の熱
風吹出し用のスリツトが設けられており、前記ス
リツトの内１対のスリツト２１，２１は鋼板の進
行方向に直角に、他の１対のスリツト２５，２５
は鋼板の進行方向に設けられる。１対のスリツト
２１，２１はそれぞれ前記上面上で鋼板のほぼ全
巾に相当する長さに亘つて上面の中央部を挾んで
互に向き合つて設けられ、他の１対のスリツト２
５，２５はそれぞれ前記上面上で鋼板の巾端の内
側に設けられ、鋼板の巾方向両端部内側を目がけ
て熱風を吹出すように設けられる。次に上面と底
面のそれぞれの中央部において両面を貫通するよ
うに垂設された筒２７が設けられる。 FIG. 5 is a perspective view of the floater nozzle of the present invention;
FIG. 6 is a front view of the same as above. floater nozzle 1
Reference numeral 9 denotes a box-shaped body provided below the continuously running steel plate 23, and a total of four hot air blowing units are provided, one pair each parallel to the opposite sides of the upper surface of the square-shaped box-shaped body. A pair of slits 21, 21 are arranged perpendicularly to the traveling direction of the steel plate, and the other pair of slits 25, 25 are provided with slits.
is provided in the traveling direction of the steel plate. A pair of slits 21 and 21 are respectively provided on the upper surface over a length corresponding to almost the entire width of the steel plate, facing each other across the center of the upper surface, and the other pair of slits 2
5 and 25 are respectively provided on the upper surface inside the width edges of the steel plate, and are provided so as to blow hot air toward the inner sides of both widthwise ends of the steel plate. Next, a vertical tube 27 is provided at the center of each of the top and bottom surfaces so as to penetrate both surfaces.
本発明のフローターノズル１９を使用するに
は、従来の下方フローターノズルの位置に本発明
のノズル１９を据付け、ノズル１９の函状体の側
面にある熱風入口２９より熱風を吹込むと、スリ
ツト２１から熱風流が吹出し従来のように鋼板を
浮かせるが前述のように横断形状はＣぞりとなを
傾向にあるが、しかしスリツト２５，２５からの
鋼板巾両端部へ熱風流の吹付けによる動的圧力の
付与により巾両端部は押上げられ、筒２７からは
鋼板中央下部に滞留した熱風流の１部を抜き去る
ことにより過剰圧力は排除され、前記Ｃぞり形状
となることが防止され平らな形状を保つことがで
き、その結果として疵発生の機会が少くなる。前
記矯正機能を活用すると、従来板巾1200mmが最高
処理巾であつたラインを、1600mm巾にまで拡大し
て使用することが可能となつた。 To use the floater nozzle 19 of the present invention, the nozzle 19 of the present invention is installed in the position of a conventional lower floater nozzle, and hot air is blown into the slit 21 from the hot air inlet 29 on the side of the box-shaped body of the nozzle 19. A hot air stream is blown out from the slits 25 to float the steel plate as in the conventional method, but as mentioned above, the cross-sectional shape tends to be C-shaped. By applying pressure, both ends of the width are pushed up, and a part of the hot air flow accumulated at the lower center of the steel plate is removed from the tube 27, thereby eliminating excess pressure and preventing the C-curved shape. A flat shape can be maintained, which reduces the chance of scratches occurring. By utilizing the above-mentioned straightening function, it has become possible to expand the line whose maximum processing width was 1200 mm to 1600 mm.
本発明のフローターノズルは前述の塗装ライン
用に限定されることなく、鋼板の連続的な熱処理
炉用、特に表面が柔かい材料、加工品の連続熱処
理に当つては疵発生防止には甚だ有効であり、又
このことは装置形状を小さくすることを可能とし
従つて設備は安く、熱効率も連動してよくなり、
産業上甚だ有効である。 The floater nozzle of the present invention is not limited to use in the above-mentioned painting line, but is extremely effective in preventing the occurrence of defects in continuous heat treatment of steel plates, especially in continuous heat treatment of materials with soft surfaces and processed products. This also makes it possible to reduce the size of the equipment, making the equipment cheaper and improving thermal efficiency.
It is extremely effective industrially.
第１図はジンクロメタル製造ラインの配置立面
図、第２図は従来のフローター方式の１部分の縦
断面図、第３図は従来の下方フローターノズルと
鋼板との関係を示す斜視図、第４図は第２図断
面図、第５図は本発明のフローターノズルの斜視
図、第６図は同上正面図である。
１９……フローターノズル、２１……スリツ
ト、２３……鋼板、２５……スリツト、２７……
筒、２９……熱風入口。
Fig. 1 is an elevational view of the layout of a zinc chrome metal production line, Fig. 2 is a vertical sectional view of a portion of the conventional floater system, Fig. 3 is a perspective view showing the relationship between the conventional lower floater nozzle and the steel plate, and Fig. 3 is a perspective view showing the relationship between the conventional lower floater nozzle and the steel plate. 4 is a sectional view of FIG. 2, FIG. 5 is a perspective view of the floater nozzle of the present invention, and FIG. 6 is a front view of the same. 19...Floater nozzle, 21...Slit, 23...Steel plate, 25...Slit, 27...
Tube, 29...Hot air inlet.
Claims (1)
に設けられるフローターの上面が四角形状をなす
フローターノズルにおいて： 前記フローターノズルの上面の相対する辺に平
行に１対づつ合計で４個の熱風吹出し用のスリツ
トが設けられており、前記スリツトのうちの１対
は鋼板の進行方向に平行に、他の１対は鋼板の進
行方向に直角に設けられており； 前記フローターノズルの上面と底面のそれぞれ
の中央部において両面を貫通するように筒が設け
られており； 前記スリツトより鋼板に向けて吹出される熱風
の一部が前記筒内を経てノズルの系外に排出され
るようにしてなるフローターノズル。 ２ 鋼板の進行方向に直角に設けられた１対のス
リツトはそれぞれ前記上面上で鋼板のほぼ全巾に
相当する長さに亘つて上面の中央部を挾んで互に
向き合つて設けられ、熱風を鋼板に向けて吹出す
ようにしてなる特許請求の範囲第１項記載のフロ
ーターノズル。 ３ 鋼板の進行方向に平行に設けられた１対のス
リツトはそれぞれ前記上面上で鋼板の巾端の内側
に設けられ、鋼板の巾方向両端部内側を目がけて
熱風を吹出すようにしてなる特許請求の範囲第１
項記載のフローターノズル。[Scope of Claims] 1. In a floater nozzle in which the upper surface of the floater is rectangular and is installed in a floating furnace that continuously heat-treats steel plates: 1 pair of floaters in total, 4 in parallel to opposite sides of the upper surface of the floater nozzle. A pair of slits for blowing hot air are provided, one pair of the slits are provided parallel to the traveling direction of the steel plate, and the other pair are provided at right angles to the traveling direction of the steel plate; A tube is provided at the center of each of the top and bottom surfaces so as to penetrate both sides; a portion of the hot air blown from the slit toward the steel plate is discharged out of the nozzle system through the inside of the tube. This is how a floater nozzle is created. 2. A pair of slits provided perpendicularly to the traveling direction of the steel plate are provided on the upper surface, facing each other across the center of the upper surface over a length corresponding to almost the entire width of the steel plate, and The floater nozzle according to claim 1, wherein the floater nozzle blows out the water toward the steel plate. 3. A pair of slits provided parallel to the traveling direction of the steel plate are each provided on the inside of the width end of the steel plate on the upper surface, and are configured to blow hot air toward the inside of both ends in the width direction of the steel plate. Claim 1
Floater nozzle as described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8277383A JPS59208027A (en) | 1983-05-13 | 1983-05-13 | Floater nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8277383A JPS59208027A (en) | 1983-05-13 | 1983-05-13 | Floater nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59208027A JPS59208027A (en) | 1984-11-26 |
| JPS6254378B2 true JPS6254378B2 (en) | 1987-11-14 |
Family
ID=13783749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8277383A Granted JPS59208027A (en) | 1983-05-13 | 1983-05-13 | Floater nozzle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59208027A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4750715A (en) * | 1985-07-09 | 1988-06-14 | Mitsubishi Jukogyo Kabushiki Kaisha | Apparatus for cooling steel belt |
| JPS62218520A (en) * | 1986-03-18 | 1987-09-25 | Mitsubishi Heavy Ind Ltd | Heat treating furnace for strip metal |
| US5320329A (en) * | 1993-02-16 | 1994-06-14 | Surface Combustion, Inc. | Pressure pad for stably floating thin strip |
-
1983
- 1983-05-13 JP JP8277383A patent/JPS59208027A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59208027A (en) | 1984-11-26 |
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