JP2735670B2 - Gas support device for changing direction of running strip - Google Patents
Gas support device for changing direction of running stripInfo
- Publication number
- JP2735670B2 JP2735670B2 JP7480490A JP7480490A JP2735670B2 JP 2735670 B2 JP2735670 B2 JP 2735670B2 JP 7480490 A JP7480490 A JP 7480490A JP 7480490 A JP7480490 A JP 7480490A JP 2735670 B2 JP2735670 B2 JP 2735670B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- strip
- support device
- pad portion
- running
- 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 - Lifetime
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Advancing Webs (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 例えば、帯鋼の堅型熱処理炉では、帯鋼を上昇した後
で下降させあるいは下降したあとで上昇させて走行させ
る。本発明は例えばこの帯鋼を気体クッションを用いて
支持する際に用いる、走行帯板の方向変換用の気体支持
装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] For example, in a solid-type heat treatment furnace for a steel strip, the steel strip is raised and then lowered, and then lowered and then run. The present invention relates to a gas supporting device for changing the direction of a running strip, which is used, for example, when supporting the strip using a gas cushion.
［従来の技術］ 例えば、帯鋼の堅型熱処理炉では、圧延したまゝで形
状矯正を行っていない帯鋼を、上昇した後で下降して走
行させる。第５図はこの際の走行する帯鋼の形状の例を
示す図である。帯鋼は形状矯正されていないために、走
行する帯鋼には第５図（Ａ）で示した耳波や、第５図
（Ｂ）で示した捩れや、第５図（Ｃ）で示した反り等の
形状欠陥が観察される。[Prior Art] For example, in a steel strip heat treatment furnace, a strip which has been rolled and has not been subjected to shape correction is raised and then moved down. FIG. 5 is a view showing an example of the shape of the running steel strip at this time. Since the steel strip is not straightened, the running steel strip has an ear wave as shown in FIG. 5 (A), a twist as shown in FIG. 5 (B), or as shown in FIG. 5 (C). Shape defects such as warpage are observed.
特開昭62−139832号公報、特開昭62−142728号公報、
特開昭62−202031号公報は、走行鋼帯の方向転換用浮揚
支持装置異に関する。これ等の先行技術には、形状欠陥
を有しない帯鋼の、方向転換用浮揚支持装置が記載され
ている。しかし本発明者等の知見によると、後で述べる
如く、形状矯正されていない帯鋼には第５図に例示した
形状欠陥があるために、これ等の先行技術に記載の方向
転換用浮揚支持装置では、走行する帯鋼が方向転換用浮
揚支持装置に接触して、この接触に起因する疵が帯鋼に
発生するという問題点がある。JP-A-62-139832, JP-A-62-142728,
Japanese Patent Application Laid-Open No. 62-202031 relates to a levitation support device for changing the direction of a traveling steel strip. These prior art documents describe a levitation support device for turning a steel strip having no shape defects. However, according to the knowledge of the present inventors, as will be described later, since the strip which has not been shape-corrected has a shape defect illustrated in FIG. 5, the direction change floating support described in these prior arts is used. In the apparatus, there is a problem that the traveling steel strip comes into contact with the direction-changing levitation support device, and a flaw caused by this contact is generated in the steel strip.
［発明が解決しようとする課題］ 本発明は、上昇した後で下降してあるいは下降した後
で上昇して走行する帯板を気体圧で支持する気体支持装
置であって、形状矯正を施していないために形状欠陥を
有する帯板であっても、気体支持装置に帯板が接触する
ことがない方向転換用の気体支持装置を提供することを
課題としている。[Problems to be Solved by the Invention] The present invention is a gas supporting device that supports a strip that travels by ascending and descending or descending and ascending and traveling by gas pressure, and is subjected to shape correction. It is an object of the present invention to provide a gas supporting device for changing the direction in which the band plate does not come into contact with the gas supporting device even if the band plate has a shape defect.
［課題を解決するための手段］ 第１図は本発明の気体支持装置の例の説明図であり、
（Ａ）は正面図、（Ｂ）は矢視イ−イ断面図である。本
発明では帯板１は、矢印８の方向に上昇した後で下降し
て走行する。本発明の気体支持装置は、凸の弧面よりな
る気体パッド部２を有する。気体パッド部には気体噴射
口３を配し、気体を気体噴射口３から帯板１に噴射す
る。気体パッド部２は帯板１を浮上させて気体パッド部
２と非接触に保つことを目的とする。１−１は形状欠陥
がない帯板１の走行路の例で、気体パッド部２には、形
状欠陥がない帯板を走行させた際に厚さがd0で均一な気
体クッション層が帯板１と気体パッド部２との間に形成
されるように、その表面に気体噴射口３を配する。第１
図の例では、気体噴射口３が角形のスリット状の例で示
したが、本発明では気体噴射口３の形状等は限定するも
のではなく、形状欠陥がない帯板を走行させた際に、帯
板１が気体パッド部２に接触しないで走行するものであ
ればよいが、好ましくは均一な厚さd0の気体クッション
層を形成するものがよい。[Means for Solving the Problems] FIG. 1 is an explanatory view of an example of a gas support device of the present invention.
(A) is a front view, (B) is an arrow II sectional view. In the present invention, the strip 1 runs down after rising in the direction of the arrow 8. The gas support device of the present invention has a gas pad portion 2 having a convex arc surface. The gas pad portion is provided with a gas injection port 3, and gas is injected from the gas injection port 3 to the strip 1. The purpose of the gas pad section 2 is to float the band plate 1 and keep it in non-contact with the gas pad section 2. 1-1 in the example of the travel path of the strip 1 there is no shape defect, the gas pad part 2, a uniform gas cushion layer with a thickness when was traveling no shape defect strip is d 0 is the band A gas injection port 3 is arranged on the surface of the gas pad portion 2 so as to be formed between the plate 1 and the gas pad portion 2. First
In the example of the figure, the gas injection port 3 is shown as an example of a square slit shape, but the present invention is not limited to the shape and the like of the gas injection port 3, and when a strip having no shape defect is run. Although strip 1 as long as it runs without contacting the gas pad portion 2, preferably those which form a gas cushion layer having a uniform thickness d 0.
本発明では気体パッド部の下方に、気体パッド部の下
端からの距離ｌが300mm以内の位置に、案内ノズルを帯
板の入側と出側にそれぞれ５−1,5−２の如くに配す
る。案内ノズル５−１と５−２は何れも水平スリット状
で、帯板１に気体を噴出する。１−２は形状欠陥がある
帯板１の走路の例で、案内ノズル５−１と５−２から帯
板１に気体を噴出させるために、帯板１の走路は、案内
ノズル５−1,5−２を用いない場合の帯鋼１の走路であ
る１−１に比べて、外側に膨らんで、案内ノズル５−1,
5−２の位置での帯板１と気体支持装置の間隙d2は、気
体パッド２で形成された気体クッション層の厚さd0より
も大きくなる。In the present invention, the guide nozzles are arranged below the gas pad portion and at a distance 1 from the lower end of the gas pad portion within 300 mm on the inlet side and the outlet side of the band plate as 5-1 and 5-2, respectively. I do. Each of the guide nozzles 5-1 and 5-2 has a horizontal slit shape, and ejects gas to the strip plate 1. 1-2 is an example of the running path of the strip 1 having a shape defect. In order to eject gas from the guide nozzles 5-1 and 5-2 to the strip 1, the running path of the strip 1 is the guide nozzle 5-1. , 5-2 are swollen outward as compared with 1-1 which is the runway of the strip 1 without using the guide nozzle 5-1.
Strip 1 and the gap d 2 of the gas support device at the location of 5-2 is greater than the thickness d 0 of the gas cushion layer formed by a gas pad 2.
既に述べた如く、気体パッド部２の気体圧は、形状欠
陥がない帯板１を走行させた際に、帯板１が気体パッド
部２に接触しない気体圧である。また後で述べる如く、
案内ノズルの気体圧は、形状欠陥がある帯板１を走行さ
せる際に、形状欠陥によって調整して設定する気体圧で
ある。従って気体パッド部２に送入する気体量Q1と案内
ノズル５−1,5−２に送入する気体量Q2とは別個に制御
して、気体パッド部の気体圧と案内ノズルの気体圧とを
別個に制御する。As described above, the gas pressure of the gas pad portion 2 is a gas pressure at which the band plate 1 does not contact the gas pad portion 2 when the band plate 1 having no shape defect is run. As will be described later,
The gas pressure of the guide nozzle is a gas pressure that is adjusted and set according to the shape defect when running the strip 1 having the shape defect. Thus the gas quantity Q 2 to which is fed to the gas quantity Q 1 and the guide nozzles 5-1 and 5-2 that fed to the gas pad portion 2 separately controlled, the gas pad portion of the gas pressure and guiding the gas nozzle Pressure and pressure are controlled separately.
第１図では気体パッド部２と案内ノズル５−1,5−２
を一体に形成した例を説明したが、本発明は気体パッド
部２と案内ノズル５−1,5−２が別個に形成された気体
支持装置を含む事は当然である。In FIG. 1, the gas pad 2 and the guide nozzles 5-1 and 5-2 are shown.
Has been described as an example, but it goes without saying that the present invention includes a gas support device in which the gas pad section 2 and the guide nozzles 5-1 and 5-2 are separately formed.
［作用］ 本発明者等は、上面が凸の弧面の気体パッド部２のみ
よりなり案内ノズル５−1,5−２を有しない、従来の気
体支持装置で、形状不良部を有する帯板を方向変換させ
る研究を行った結果、下記の知見を得るに至った。第２
図はその例を示す図である。[Operation] The present inventors have developed a conventional gas supporting apparatus having only a gas pad portion 2 having a convex upper surface and no guide nozzles 5-1 and 5-2. As a result of conducting a study to change the direction of, the following findings were obtained. Second
The figure shows the example.
例えば高さd1の耳波７を有する、第２図の点線１で示
した帯板は、気体パッド部２に支承されて矢印８方向に
走行する。帯板１が走行すると耳波７は気体パッド部の
下端６に達する。帯板１と気体パッド部２の間には平均
厚さがd0の気体クッションが既に形成されているが、耳
波７が気体パッドの下端６に達しても、帯板１の走路に
は大きな変化がなく、従って耳波の高さd1が気体クッシ
ョンの平均厚さd0より大きい場合は、耳波は気体パッド
部の下端に接触する。For example, a strip indicated by a dotted line 1 in FIG. 2 having an ear wave 7 having a height d 1 is supported by the gas pad portion 2 and travels in the direction of arrow 8. When the strip 1 runs, the ear wave 7 reaches the lower end 6 of the gas pad portion. A gas cushion having an average thickness d 0 is already formed between the band 1 and the gas pad portion 2, but even if the ear wave 7 reaches the lower end 6 of the gas pad, the running path of the band 1 is no significant change, if the height d 1 of the ear wave is greater than the average thickness d 0 of the gas cushion, therefore, Mimiha contacts the lower end of the gas pad portion.
帯板が更に矢印８方向に走行すると、耳波７は、気体
クッション内に、例えば第２図の７−２に移動する。耳
波７が曲部の気体クッション内に移動すると、帯板の耳
波は第２図の点線の如く曲げられる事により小さくな
る。このために気体クッション内では、耳波７の気体ク
ッション部２への接触が自然に防止される。As the strip further travels in the direction of arrow 8, ear waves 7 move into the gas cushion, for example, 7-2 in FIG. When the ear wave 7 moves into the gas cushion of the curved part, the ear wave of the band plate is reduced by being bent as shown by the dotted line in FIG. Therefore, in the gas cushion, the contact of the ear wave 7 with the gas cushion portion 2 is naturally prevented.
既に第５図で述べた如く、形状矯正を行っていない帯
鋼には耳波や捩りや反り等の形状欠陥が観察される。ま
た、第２図で示した気体パット部２の下端６より下方で
は、帯板１は拘束が少ないために、耳波や捩れや反り等
の外乱を形成している。この外乱はそのまゝ気体パッド
部２の下端に達して、帯板１は気体パッド部２の下端に
接触するに至る。この外乱は、気体クッション内に移行
するが、しかし曲部の気体クッション内では、帯板が曲
げられることによって耳波７は小さくなり、帯板１が気
体パッド部２の弧面に接触するのを防止する。As already described with reference to FIG. 5, shape defects such as ear waves, torsion, and warpage are observed in the strip which has not been subjected to shape correction. In addition, below the lower end 6 of the gas pad portion 2 shown in FIG. 2, since the band plate 1 is less constrained, it forms disturbances such as ear waves, twisting and warping. This disturbance reaches the lower end of the gas pad portion 2 as it is, and the strip 1 comes into contact with the lower end of the gas pad portion 2. This disturbance is transferred into the gas cushion, but in the curved gas cushion, the ear wave 7 is reduced due to the bending of the band plate, and the band plate 1 comes into contact with the arc surface of the gas pad portion 2. To prevent
第３図は、本発明の案内ノズル５−1,5−２を用いた
例である。案内ノズル５−1,5−２からは、気体パッド
部２へ送入する気体量Q1とは別個に制御されたQ2量の気
体を送入する。このため帯板１は、気体パッド部２では
帯板の中央で厚さd0の気体クッションを形成し、気体パ
ッド部２の下端６では、帯板１と気体パッド部２との間
隔がd0よりも大きいd2の走路を形成する。従ってd2を耳
波７の高さd1よりも大きく設定することによって、帯板
の耳波７が気体パッド部２の下端６に達しても、帯板１
が気体パッド部２に接触することがない。FIG. 3 is an example using the guide nozzles 5-1 and 5-2 of the present invention. From the guide nozzle 5-1 and 5-2, the amount of gas Q 1 to fed into the gas pad part 2 fed separately controlled Q 2 of the gas. For this reason, the band plate 1 forms a gas cushion having a thickness d 0 at the center of the band plate in the gas pad portion 2, and the gap between the band plate 1 and the gas pad portion 2 is d at the lower end 6 of the gas pad portion 2. 0 to form a track of larger d 2 than. By setting larger than the height d 1 of Mimiha 7 d 2 Accordingly, even if the ear wave 7 of the strip has reached the lower end 6 of the gas pad portion 2, the strip 1
Does not come into contact with the gas pad portion 2.
尚耳波７が気体クッション内に移行すると、既に述べ
た如く、耳波部７は第３図の点線で示した如く、耳波は
小さくなるため気体クッションの層厚d0が耳波高さd1と
同等あるいは若干小さくても、帯板１は気体パッド部２
の弧面に接触することがない。When the ear wave 7 moves into the gas cushion, as described above, the ear wave portion 7 has a smaller ear wave as shown by the dotted line in FIG. 3, so that the layer thickness d 0 of the gas cushion is equal to the ear wave height d. Even if it is equal to or slightly smaller than 1, the strip 1 is the gas pad 2
Never touch the arc surface of
本発明では、第３図で気体パッド部２の下端６と案内
ノズル５−1,5−２との間隔ｌは300mm以下とする。第４
図はこの間隔ｌと帯板１の走路の例を示す図である。間
隔ｌが300mmを超えて大き過ぎると、第４図に示した如
く、案内ノズル５−1,5−２で一旦膨らませた帯板１の
走路が、気体パッド部２の近傍では元へ戻って、案内ノ
ズル５−1,5−２を用いた効果が減少する。In the present invention, the distance l between the lower end 6 of the gas pad section 2 and the guide nozzles 5-1 and 5-2 in FIG. 3 is 300 mm or less. 4th
The figure shows an example of the interval l and the running path of the strip 1. If the distance l exceeds 300 mm and is too large, as shown in FIG. 4, the running path of the strip 1 once expanded by the guide nozzles 5-1 and 5-2 returns to the original position near the gas pad portion 2. The effect of using the guide nozzles 5-1 and 5-2 is reduced.
本発明者等は形状欠陥を有する帯状鋼板について調査
したが、間隔ｌを300mm以内に設定すると、適当な量の
気体を案内ノズルから噴出させて、帯状鋼板の走路を、
帯状鋼板が気体パッドに接触しないように容易に膨らま
せる事ができた。The present inventors investigated a strip-shaped steel sheet having a shape defect, but when the interval l is set within 300 mm, an appropriate amount of gas is ejected from the guide nozzle, and the running path of the strip-shaped steel sheet is
The strip-shaped steel plate could be easily expanded so as not to contact the gas pad.
本発明で、案内ノズル５−1,5−２は水平スリット状
とするが、水平のスリット状のノズルは、帯板１の巾方
向に均等な圧力で、帯板１に気体を噴出させるのに適し
ている。In the present invention, the guide nozzles 5-1 and 5-2 have a horizontal slit shape, and the horizontal slit-shaped nozzles eject gas to the band plate 1 with a uniform pressure in the width direction of the band plate 1. Suitable for.
本発明者等は、第１図に示した本発明の気体支持装置
を用いて、帯状鋼板１を用いて、片側の案内ノズルから
噴射させるガスの噴射量Q2と、d2との関係を研究した
が、帯状鋼板１と気体支持装置との間隔d2は、下記第
（１）式となる事を知得した。The present inventors have used a gas support device of the present invention shown in FIG. 1, with the steel strip 1, the injection quantity Q 2 of the gas to be injected from one side of the guide nozzle, the relationship between d 2 was studied, the steel strip 1 and the distance d 2 between the gas support apparatus has become known that the following equation (1).
d2＝4.19×（Ｔ・tb/Q2 2）−0.25×（B/1000）1.25 …（１） 但し、d2:帯状鋼板と気体支持装置との間隔（mm） Q2:片側の案内ノズルからの噴射ガス量（Nm3/mi ｎ） T:帯状鋼板の張力（kgf/mm2） tb:帯状鋼板の板厚（mm） B:帯状鋼板の板巾（mm） 本発明者等は、帯状鋼板１の形状欠陥の量、例えば第
３図の耳波高さd1を測定し、第（１）式を用いてd2がd1
以上となるようにQ2を調整設定して、案内ノズル５−1,
5−２から空気を噴射させて、帯状鋼板１を走行させた
が、帯状鋼板１は気体支持装置に接触する事がなく、気
体支持装置は非接触で、方向転換する帯状鋼板１を支承
することができた。 d 2 = 4.19 × (T · tb / Q 2 2) -0.25 × (B / 1000) 1.25 ... (1) where, d 2: the steel strip and the interval between the gas support device (mm) Q 2: one side of the guide Injection gas amount from nozzle (Nm 3 / min) T: Tension of strip-shaped steel sheet (kgf / mm 2 ) tb: Thickness of strip-shaped steel sheet (mm) B: Strip width of strip-shaped steel sheet (mm) , the amount of shape defect of the steel strip 1, to measure for example the Mimiha height d 1 of FIG. 3, the (1) equation d 2 with d 1
Adjust set the Q 2 so that the above, the guide nozzle 5-1,
Air was injected from 5-2 to run the strip-shaped steel sheet 1, but the strip-shaped steel sheet 1 did not come into contact with the gas supporting device, and the gas supporting device supported the direction-changing strip-shaped steel sheet 1 without contact. I was able to.
［実施例］ 本発明者等は、案内ノズルを有しない、第２図に示し
た比較例の気体支持装置を用いて、d0を５〜10mmに設定
して、耳波高さd1が５〜15mmの帯状鋼板１を走行させた
が、帯状鋼板１の耳波部が、気体支持装置２の下端６に
接触して、スリ疵が発生した。[Embodiment] The present inventors, no guide nozzle, using a gas support device of the comparative example shown in FIG. 2, by setting d 0 to 5 to 10 mm, Mimiha height d 1 of 5 When the strip-shaped steel sheet 1 having a thickness of about 15 mm was run, the edge wave portion of the strip-shaped steel sheet 1 came into contact with the lower end 6 of the gas supporting device 2, and a scratch was generated.
本発明者等は、案内ノズルを有する、第３図に示した
本発明の気体支持装置を用いて、d0を５〜10mmに設定
し、かつ案内ノズル５−1,5−２から、第（１）式でd2
＝20mmとする空気を噴射させて、耳波高さd1が５〜15mm
の帯状鋼板１を走行させたが、帯状鋼板１にはスリ疵は
全く発生しなかった。The present inventors have has a guide nozzle, using a gas support device of the present invention shown in FIG. 3, to set the d 0 to 5 to 10 mm, and the guide nozzle 5-1 and 5-2, the (1) in the d 2
Inject air to make = 20mm, ear wave height d 1 is 5-15mm
The strip-shaped steel sheet 1 was run, but no scratch was generated on the strip-shaped steel sheet 1.
［発明の効果］ 本発明の気体支持装置を用いて上昇した後で下降する
帯板あるいは下降した後で上昇する帯板を支持すると、
形状矯正を行っていないために形状欠陥を有する帯板を
使用しても、帯板は走行中に非接触に保たれて、スリ疵
等が帯板に発生することがない。[Effects of the Invention] When the gas supporting device of the present invention is used to support a band that rises and then descends or a band that rises after descending,
Even if a strip having a shape defect is used because the shape is not corrected, the strip is kept in non-contact during traveling, and no scratches or the like are generated on the strip.
第１図は本発明の気体支持装置の例の説明図、 第２図は従来の気体支持装置を用いた際の帯板の走路の
例の説明図、 第３図は本発明の気体支持装置を用いた際の帯板の走路
の例の説明図、 第４図は、案内ノズルを配する位置と帯板の走路の例の
説明図、 第５図は、形状矯正を行っていない帯鋼の形状欠陥の例
を示す図、 である。 1:帯板、2:気体パッド部、3:気体噴射口、4:気体クッシ
ョン、５−１（５−２）：案内ノズル、6:気体パッド部
の下端、7:耳波、8:帯板の走行方向。FIG. 1 is an explanatory diagram of an example of a gas supporting device of the present invention, FIG. 2 is an explanatory diagram of an example of a running path of a strip when a conventional gas supporting device is used, and FIG. 3 is a gas supporting device of the present invention. FIG. 4 is an explanatory view of an example of a running path of a band plate when using a belt, FIG. 4 is an explanatory view of a position where guide nozzles are arranged and an example of a running path of a band plate, and FIG. 5 is a diagram showing an example of a shape defect of FIG. 1: Strip plate, 2: Gas pad section, 3: Gas injection port, 4: Gas cushion, 5-1 (5-2): Guide nozzle, 6: Lower end of gas pad section, 7: Ear wave, 8: Band The direction of travel of the board.
Claims (1)
で上昇して走行する帯板を気体圧で支持する気体支持装
置であって、該気体支持装置が凸の弧面よりなる気体パ
ッド部を有するとともに、気体パッド部の下方に気体パ
ッド部の下端より300mm以内の位置に帯板の入側と出側
に水平スリット状の案内ノズルを有し、気体パッド部の
気体圧と案内ノズルの気体圧とを別個に制御して、帯板
を非接触に保って走行方向を変換させる走行帯板の方向
変換用の気体支持装置。1. A gas support device for supporting, by gas pressure, a strip which travels up and down or rises and then descends, said gas support device comprising a convex arc surface. And a horizontal slit-shaped guide nozzle on the entry side and the exit side of the strip at a position within 300 mm from the lower end of the gas pad section below the gas pad section, and the gas pressure of the gas pad section and the guide nozzle A gas support device for changing the direction of the running strip which changes the running direction while keeping the strip in a non-contact state by separately controlling the gas pressure of the running strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7480490A JP2735670B2 (en) | 1990-03-24 | 1990-03-24 | Gas support device for changing direction of running strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7480490A JP2735670B2 (en) | 1990-03-24 | 1990-03-24 | Gas support device for changing direction of running strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03279148A JPH03279148A (en) | 1991-12-10 |
| JP2735670B2 true JP2735670B2 (en) | 1998-04-02 |
Family
ID=13557864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7480490A Expired - Lifetime JP2735670B2 (en) | 1990-03-24 | 1990-03-24 | Gas support device for changing direction of running strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2735670B2 (en) |
-
1990
- 1990-03-24 JP JP7480490A patent/JP2735670B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03279148A (en) | 1991-12-10 |
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