EP1051526A1 - Vorrichtung zur schwebenden führung von bändern - Google Patents
Vorrichtung zur schwebenden führung von bändernInfo
- Publication number
- EP1051526A1 EP1051526A1 EP99904850A EP99904850A EP1051526A1 EP 1051526 A1 EP1051526 A1 EP 1051526A1 EP 99904850 A EP99904850 A EP 99904850A EP 99904850 A EP99904850 A EP 99904850A EP 1051526 A1 EP1051526 A1 EP 1051526A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- belt
- radial
- sides
- band
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
- F26B13/101—Supporting materials without tension, e.g. on or between foraminous belts
- F26B13/104—Supporting materials without tension, e.g. on or between foraminous belts supported by fluid jets only; Fluid blowing arrangements for flotation dryers, e.g. coanda nozzles
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B2045/0212—Cooling devices, e.g. using gaseous coolants using gaseous coolants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
Definitions
- the invention relates to a device in which suspended strips, preferably wide metal strips, are held in suspension by blowing with treatment gas from above and below and at the same time are heat-treated.
- the heat treatment can be the heating and holding to the annealing temperature and subsequent cooling for metallurgical reasons or for the purpose of surface treatment, e.g. B. when drying a coating of the tape.
- Such devices are usually made up of individual, consecutive sections or zones and contain such.
- B. DE-PS 2446983.8 or DE 4010280 AI show each section a flow guide with at least one fan and arranged transversely to the belt run above and below the belt nozzle ribs with which the belt for the purpose of convective heat exchange with the gas circulated by the fan and at the same time is more or less well stabilized by the acting flow forces.
- devices for operation at higher gas temperatures are generally equipped with radial fans for reasons of strength.
- the device according to DE-OS 2446983.8 a particularly compact design is achieved by only one fan arranged on the side per section, but since the one fan supplies the upper and lower floating nozzles at the same time, simple adjustment of the load capacity, e.g. B. to adapt to the weight of the hovering band, not possible by changing the fan speed, because it would affect the upper and lower nozzle system in the same way.
- the device according to DE-OS 2446983.8 has the disadvantage that the backflow of the treatment gas inflated onto the belt occurs only on one side towards the fan. This results in a cross-flow heat exchange between backflow from the belt and inflow in the nozzle ribs. B. in a heating zone in which the gas flows out of the tape colder than it is inflated onto the tape, a decrease
- REPLACEMENT BLA ⁇ (RULE 26) the temperature of the inflated gas along the nozzle rib from the side facing away from the fan to the fan side.
- the device according to DE 40120280 AI avoids this disadvantage by mutual inflow to the nozzle ribs within a section, but is right because of the nozzle ribs, which must also be provided with complex flow control devices in order to achieve a flow that occurs exactly perpendicular to the belt over the entire working width complicated and expensive to manufacture.
- the use of nozzle ribs also has the disadvantage, in the case of heavier belts in a device according to DE 40120280 AI, that the entire backflow from the belt can only take place between the nozzle ribs, because the side regions of the device through the feed channels from which the nozzle ribs are fed, are blocked.
- the invention is therefore based on the object of providing a device of the type specified which avoids the disadvantages described.
- a relatively inexpensive, compact device is to be provided, in which the disadvantages of the backflow of the nozzle ribs to be guided to the floating Band inflated gas flow is only avoided by gaps between the nozzle fins.
- the nozzle fields each of which extends over the entire working width and the entire length of the device, and which are supplied in each case from a collecting box for the blowing gas arranged below or above the nozzle field.
- a radial fan preferably a drum rotor fan, is installed in a 360 "housing in each side wall below and above the belt level.
- a 360 ° housing is followed by a blow-out duct the length of at least one hydraulic diameter of the duct, which is parallel to the respective one
- the suction openings of the fans each point to the vertical longitudinal center plane of the device.
- Each exhaust duct is followed by a first elbow running parallel to the belt level.
- This first manifold opens into a second manifold which is parallel to the vertical section of the device and merges into a vertical channel from which the collection or supply box for the respective nozzle array is fed.
- the free space between the fan spiral housing and the front wall of the device can be used for an entry opening into the respective upper or lower part of the device or for installing heating devices.
- Coolers for cooling the gas flow circulated by the fans can be installed from the side wall parallel to the supply boxes for the nozzle field on both sides of the nozzle boxes, that is to say two in the upper half and two in the lower half of the device.
- the coolers can be moved in boxes which are integrated into the outer wall, so that the same device can be used both for heating and for cooling the strip, the cooler being removed from the when operating as a heating zone, i.e. for heating the strip Flow circuit are extended.
- the end wall of the cooler package pointing towards the interior is then provided with appropriate thermal insulation.
- the nozzle field can consist of individual partial nozzles which are connected to one another by semi-open channels in order to facilitate the predominantly lateral outflow.
- a nozzle box with a nozzle surface in which outflow openings which penetrate the box in the direction perpendicular to the strip plane are introduced.
- the outflow openings can be dimensioned such that, depending on the basis weight to be carried, a more or less large amount of gas flows out through these outflow openings and a more or less large proportion of that onto the belt inflated gas stream flows out laterally, the levitation height of the band being determined by the ratio between lateral outflow and outflow through the openings which penetrate the nozzle box.
- FIG. 1 shows a vertical longitudinal section through a system consisting of several heating and cooling zones
- FIG. 2 shows a vertical longitudinal section of a zone with a device according to the invention
- Figure 3 is a vertical cross section through a zone with the invention
- FIG. 4 shows a horizontal section through a zone
- FIG. 5 shows another embodiment of the nozzle field with one below
- FIG. 6 shows an embodiment of the nozzle field as a nozzle plate, in which backflow openings in the form of channels are integrated for the partial outflow perpendicular to the strip surface and penetrate the nozzle box vertically.
- the system shown in Figure 1 consists of four heating zones 2 and two cooling zones 3.
- the installation area for coolers is indicated with reference numeral 30, with which the gas stream circulated in the cooling zone, which cools the strip, is cooled back.
- the direct gas heating selected by way of example by flame tubes 31 is indicated in the heating zone 2.
- a metal strip 1 runs from right to left horizontally through the plant. It is also possible to guide the tape at an angle through the system, the limit case of an inclination of the tape run of 90 ° with respect to the horizontal being a vertical system in which the tape hangs vertically and does not have to be carried, but nevertheless by blowing with floating nozzles is stabilized fluidically in the middle position from both sides.
- the usual devices essentially consisting of rollers for the strip travel, the control of the strip center position and the regulation of the strip tension are arranged.
- Each zone 2, 3 has a device for levitating the metal strip 1.
- each zone 2 and 3 of the installation has four radial fans 4, which are installed in the side walls. Because of the particularly compact design and the very high delivery and pressure figures compared to other radial fans, drum rotor radial fans are particularly suitable for this.
- the drum rotor radial fans 4 are installed in 360 ° spiral housings 5, which have the advantage that the drum rotors 4 develop their full power in such housings, as far as the pressure generated and the volume flow concerned are concerned.
- a straight blow-out channel 6, which has at least a length of a hydraulic diameter of the blow-out cross section, connects to the 360 ° spiral housing 5. Such a blow-out channel 6 is required in connection with the spiral housing 5 so that the drum rotor fan 4 can develop the full delivery rate.
- the blow-out channel 6 runs parallel to the belt run and is directed in the opposite direction for the two radial fans 4 installed in opposite side walls of a device, as the horizontal section through the device in FIG. 3 shows.
- Each straight blow-out duct 6 of each fan 4 borders with one side on the floor 7 or the ceiling 8 of the device. 3, the upper wall of the upper channel 6 adjoins the ceiling 8 and the lower wall of the lower channel 6 adjoins the floor 7. 7
- blow-out channel 6 is first drawn in at the tongue of the 360 ° spiral housing and only widens in a region 9 to the full blow-out channel cross section after a certain length.
- the free area of the side wall, in which the fan 4 is installed, obtained by this channel shape can be used for installation openings for the introduction of heating devices such as, for. B. gas burners or gas-heated radiant tubes.
- the area in which such openings can be made is identified in FIG. 2 by reference number 10.
- a 90 ° elbow 11 with an axis vertical to the belt plane adjoins the blow-out channel 6, which deflects the volume flow conveyed by the radial fan 4 in the direction of the center of the device.
- This elbow 11 merges into a second 90 ° elbow 12, the axis of which is directed parallel to the belt run and which deflects the volume flow vertically to the belt, ie upwards in the lower half of the device and downwards in the upper half of the device.
- a short, vertically directed duct piece adjoins this second elbow 12
- This box 14 occurs, which carries a nozzle field 15 on its side facing the belt 1.
- This box 14 can either extend in one piece over the entire length of the device or, as shown in FIGS. 2 and 3, be divided in the middle of the device, as a result of which a gap 16 is formed between the two parts.
- a partial box is supplied by a fan. This has the advantage that the nozzle pressure in the two boxes can be different due to a change in the speed of the fans.
- the gap 16 between the two parts of a supply box 14 can be used to absorb thermal expansion.
- the treatment gas flows out of the nozzle box 14 into the nozzle field 15 8 the belt 1 and from the belt 1 back to the fan 4, the major part of the volume flow impinging on the belt 1 flowing off laterally, i.e. through the gap between the nozzle field 15 and the side wall of the device upwards or downwards into the suction area of the Fan 4.
- open backflow channels 18 can be arranged between the nozzle surfaces 17, which have a rhombus-like shape in the example of FIGS. 2 and 3, which, in the case of a rhombus-like design of the nozzle surfaces 17, expand from the center of the band to the edge of the band.
- an expansion in the direction perpendicular to the band 1 can also take place.
- the air flowing out of the belt 1 then reaches the space between the two fans 4 again along the longitudinal edges of the collecting tank 19 facing away from the belt, from which they again suck in the volume flow.
- coolers 20 can advantageously be arranged along the side edges of the collecting box 19, which coolers can extend almost over the entire length of the device. Due to this large flow area, the pressure loss at the coolers 26 is comparatively low. Another advantage of this arrangement is that the cooler 26 can not only be removed very easily, but also that a lateral displacement in the housing 21 is possible, which are integrated in the side walls. In this way, a zone of the device designed as a cooling zone can also be used as a heating zone. When switching from cooling mode to heating mode, only the coolers 20 are moved into the housing 21. It is advantageous to provide the cooler with thermal insulation 22 on the end face pointing inwards in the extended state. Moving the cooler is very easy because the connections for the cooling water can be designed flexibly.
- This embodiment of the device is particularly advantageous if it is to be used for the heat treatment of strips 1 made of light metal alloys.
- Some Light metal alloys require relatively long holding times.
- This possibility of the device according to the invention thus represents a great advantage in terms of production technology and, in particular, economic.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Textile Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Cable Accessories (AREA)
- Advancing Webs (AREA)
- Manufacturing Of Electric Cables (AREA)
- Treatment Of Fiber Materials (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19804184A DE19804184A1 (de) | 1998-02-03 | 1998-02-03 | Vorrichtung zur schwebenden Führung von Bändern |
DE19804184 | 1998-02-03 | ||
PCT/EP1999/000698 WO1999040230A1 (de) | 1998-02-03 | 1999-02-03 | Vorrichtung zur schwebenden führung von bändern |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1051526A1 true EP1051526A1 (de) | 2000-11-15 |
EP1051526B1 EP1051526B1 (de) | 2001-11-07 |
Family
ID=7856494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99904850A Expired - Lifetime EP1051526B1 (de) | 1998-02-03 | 1999-02-03 | Vorrichtung zur schwebenden führung von bändern |
Country Status (5)
Country | Link |
---|---|
US (1) | US6413470B1 (de) |
EP (1) | EP1051526B1 (de) |
AT (1) | ATE208432T1 (de) |
DE (2) | DE19804184A1 (de) |
WO (1) | WO1999040230A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10326071A1 (de) * | 2003-06-10 | 2005-01-13 | Kramer, Carl, Prof. Dr.-Ing. | Umlenkvorrichtung für bewegte Bänder |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10358142A1 (de) * | 2003-12-10 | 2005-07-14 | Otto Junker Gmbh | Vorrichtung zum schwebenden Führen von bahnförmigem Material |
DE102004054393B3 (de) * | 2004-07-19 | 2005-09-08 | Otto Junker Gmbh | Vorrichtung zur konvektiven Wärmebehandlung von metallischem Gut |
DE102006056518A1 (de) * | 2006-11-06 | 2008-05-08 | Otto Junker Gmbh | Vorrichtung zur schwebenden Führung von bahnförmigem Material |
CN101185944B (zh) * | 2007-12-27 | 2010-06-23 | 山西太钢不锈钢股份有限公司 | 防止热轧不锈钢带轧制划伤的方法及其装置 |
CN102002578B (zh) * | 2010-11-29 | 2012-08-15 | 苏州中门子科技有限公司 | 气垫炉的气垫悬浮发生装置 |
DE102011103806B3 (de) | 2011-06-01 | 2012-11-22 | Otto Junker Gmbh | Vorrichtung zum schwebenden Führen von metallischen Bändern mittels eines Gases sowie ein Verfahren zum Betreiben einer solchen Vorrichtung |
DE102012110010B4 (de) | 2012-10-19 | 2016-09-01 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Vorrichtung und Verfahren zur kontinuierlichen Behandlung eines Metallbandes |
DE102013112172B3 (de) * | 2013-11-06 | 2014-12-24 | Vits Technology Gmbh | Trockner für Warenbahnen |
DE102014006233A1 (de) * | 2014-04-30 | 2015-11-05 | Otto Junker Gmbh | Vorrichtung zur schwebenden Führung von bahnförmigem Material |
DE102014118946B4 (de) | 2014-12-18 | 2018-12-20 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Vorrichtung und Verfahren zur kontinuierlichen Behandlung eines Metallbandes |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3048383A (en) * | 1958-09-18 | 1962-08-07 | Swindell Dressler Corp | Furnace or like system for gas-supporting and treating flat work |
FR1421631A (fr) | 1964-11-16 | 1965-12-17 | Kalle Ag | Procédé et dispositif de traitement, et en particulier de séchage, de matières en forme de bande transportées aérodynamiquement |
US3739491A (en) * | 1971-09-22 | 1973-06-19 | Tec Systems | High velocity air web dryer |
DE2908348A1 (de) * | 1979-03-03 | 1980-09-04 | Vits Maschinenbau Gmbh | Schwebetrockner |
DE3318861C1 (de) * | 1983-05-25 | 1984-11-08 | Vits-Maschinenbau Gmbh, 4018 Langenfeld | Vorrichtung zum schwebenden Fuehren von Materialbahnen,insbesondere mit einer Heizeinrichtung zum Gluehen von Aluminiumbaendern |
DE4010280A1 (de) * | 1990-03-30 | 1991-10-02 | Wsp Ingenieurgesellschaft Fuer | Vorrichtung zur beidseitigen beblasung eines bahnfoermigen materials mit einem behandlungsgas |
US5320329A (en) * | 1993-02-16 | 1994-06-14 | Surface Combustion, Inc. | Pressure pad for stably floating thin strip |
JP3489240B2 (ja) * | 1995-01-13 | 2004-01-19 | 大同特殊鋼株式会社 | フローティング炉 |
-
1998
- 1998-02-03 DE DE19804184A patent/DE19804184A1/de not_active Withdrawn
-
1999
- 1999-02-03 WO PCT/EP1999/000698 patent/WO1999040230A1/de active IP Right Grant
- 1999-02-03 US US09/601,202 patent/US6413470B1/en not_active Expired - Fee Related
- 1999-02-03 EP EP99904850A patent/EP1051526B1/de not_active Expired - Lifetime
- 1999-02-03 AT AT99904850T patent/ATE208432T1/de not_active IP Right Cessation
- 1999-02-03 DE DE59900408T patent/DE59900408D1/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9940230A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10326071A1 (de) * | 2003-06-10 | 2005-01-13 | Kramer, Carl, Prof. Dr.-Ing. | Umlenkvorrichtung für bewegte Bänder |
DE10326071B4 (de) * | 2003-06-10 | 2005-09-01 | Kramer, Carl, Prof. Dr.-Ing. | Umlenkvorrichtung für bewegte Bänder |
Also Published As
Publication number | Publication date |
---|---|
EP1051526B1 (de) | 2001-11-07 |
ATE208432T1 (de) | 2001-11-15 |
WO1999040230A1 (de) | 1999-08-12 |
US6413470B1 (en) | 2002-07-02 |
DE59900408D1 (de) | 2001-12-13 |
DE19804184A1 (de) | 1999-08-05 |
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