EP3224561A1 - Ungekühlte ofenrolle, und verfahren zur herstellung einer ungekühlten ofenrolle - Google Patents
Ungekühlte ofenrolle, und verfahren zur herstellung einer ungekühlten ofenrolleInfo
- Publication number
- EP3224561A1 EP3224561A1 EP15791541.4A EP15791541A EP3224561A1 EP 3224561 A1 EP3224561 A1 EP 3224561A1 EP 15791541 A EP15791541 A EP 15791541A EP 3224561 A1 EP3224561 A1 EP 3224561A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cavity
- conical end
- end piece
- roller body
- furnace
- 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
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/02—Skids or tracks for heavy objects
- F27D3/026—Skids or tracks for heavy objects transport or conveyor rolls for furnaces; roller rails
- F27D3/028—Roller rails or succession of small sized rollers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/02—Skids or tracks for heavy objects
- F27D3/026—Skids or tracks for heavy objects transport or conveyor rolls for furnaces; roller rails
Definitions
- Uncooled oven roll and method of making an uncooled oven roll
- the invention relates to an uncooled oven roll for the transport of
- continuous casting material is preheated to rolling temperature.
- the transport of the rolling stock e.g. in the form of thin slabs or the like, by a roller hearth furnace via driven furnace rollers in different designs.
- the oven rolls are arranged at a certain oven height at predetermined intervals from each other.
- the dimensions of the furnace rollers are characterized - relatively speaking - by the fact that their diameter is small compared to their length in the axial direction.
- the furnace rollers of a roller hearth furnace or a tunnel furnace can be equipped with a water cooling, as known for example from DE 100 47 046 A1.
- the oven rolls can also be designed without a cooling device, namely as a so-called dry roll.
- Uncooled oven roll is made by heat radiation, heat conduction in the steel and heat conduction of the kiln exhaust gas (convection).
- uncooled oven rolls do not require active cooling of their components, so that significantly less energy is extracted from the tunnel kiln.
- Conventional uncooled furnace rollers consist of a hollow cylindrical roller body, at its end faces in each case a cone with a pin
- At least one bore in the wall of the reel body ensures adequate air circulation between the cavity of the Reel body and the environment, since the volume of air within the reel body may change as a result of temperature fluctuations.
- the two conical regions which are fastened to the end faces of the roller body, are located in the region of the tunnel kiln wall.
- the general aim is to minimize their heat transport out of the tunnel kiln.
- FIGS. 6 and 7 each show a longitudinal cross-section of an end face of a conventional uncooled oven roll.
- a plug of thermally insulating refractory material 100 (see Fig. 6) or a device 102 with a plurality of heat shields, which together form a sheet metal grid (see Fig. 7), may be inserted into the cone.
- the introduction and mounting of these insulating materials in the cone or in the cavity of the furnace rollers has the disadvantage that this results in complex and costly manufacturing steps.
- Other disadvantages are that the life of the refractory material is lower than that of the furnace roller. Due to the permanent rotational movements of the furnace roller, the refractory material begins to break after a certain period of operation and thereby loses its good thermal insulation property.
- the invention has for its object to improve the thermal insulation of an uncooled oven roll with simple and inexpensive means and at the same time to increase the life of the furnace roller.
- An uncooled furnace roll according to the present invention is for transporting continuous casting material of a continuous casting plant, and comprises a cylindrical roll body and conical end pieces, which are respectively at the end faces of the
- Role body are attached. At each end piece may be provided on the outside thereof in each case a pin for receiving in a storage or the like.
- a cavity is formed in the region of the roller body and / or at least one conical end piece, which is sealed to the environment and placed under vacuum, so that there is a vacuum thermal insulation for the roller body or the conical end piece.
- a cylindrical roll body and at least one conical end piece are provided. Thereafter, the conical end piece is attached to an end face of the reel body, such that thereby a cavity formed within the furnace roller in the region of the reel body and / or a conical end piece is sealed to the environment and the cavity is placed under vacuum is.
- the invention is based on the essential finding that the vacuum, which is present in the cavity of the furnace roller in the region of the roller body or of the conical end piece, ensures a considerable improvement of the thermal insulation for the furnace roller.
- the heat insulation for the furnace roll is based solely on the prevailing in the cavity vacuum, without that in the cavity other materials such. Fireproof wool or
- Air volume is included, resulting in temperature fluctuations
- an oven roll according to the present invention is manufactured in a vacuum chamber with at least one conical end piece, preferably both conical end pieces, fixed to the end face of the roll body, the explained vacuum thermal insulation is automatically generated by this type of manufacturing process.
- attachment of the conical end pieces to the end faces of the reel body may be accomplished by electron beam (EB) welding.
- EB welding offers further advantages: above-average narrow seams, narrowly limited heat-affected zones without tarnish, large welding depths and high welding speeds, all of which are due to the high power density of the electron beam. Due to the exact reproducibility of the EB welds, a consistent quality of the joints between the roller body and the conical end pieces welded to it can be guaranteed. In addition, several welds can simultaneously
- the roller body may be formed as a cylindrical hollow body, so that the cavity of the furnace roller extends at least along the entire longitudinal axis of the roller body. This ensures that the desired thermal insulation is present at least in the region of the entire length of the roller body.
- a conical end piece may be formed as a cap member. Accordingly, a cavity is formed within the conical end piece when the end piece is attached to an end face of the reel body. For the purposes of the present invention, this is Cavity set inside the conical end under vacuum. Regardless of whether a cavity is also formed in the reel body, vacuum is ensured by the vacuum within the cavity of the conical end piece for this component.
- both the roller body as a cylindrical hollow body and at least one conical end piece are designed as a cap member as explained above.
- the cavity of the oven roll is formed both inside the reel body and inside the conical end piece as a continuous interior which is sealed to the environment and as explained is vacuumed.
- the advantageous vacuum thermal insulation extends from the
- connection valve which is in fluid communication with the cavity of the furnace roller.
- the port valve Through the port valve and using a separate vacuum pump or the like, it is possible to completely vacuum the cavity. After the cavity has been completely vacuumed in this manner, the port valve can be suitably closed to seal the cavity from the environment and to keep the vacuum in the cavity.
- connection valve is designed as a check valve, which closes automatically after the generation of the vacuum within the cavity and seals the cavity from the environment.
- connection valve and the illustrated generation of the vacuum in the cavity using this connection valve has the advantage that a furnace roll according to the present invention can also be produced without a vacuum chamber.
- the individual components of the furnace roller namely Roller body and the two conical end pieces can then be welded together under normal atmosphere, after which the cavity of the furnace roll is vacuum-sealed by the connection valve.
- FIG. 1 shows a simplified longitudinal cross section of a device according to the invention
- FIG. 2 is a perspective view of the oven roll of FIG. 1;
- FIG. 3 shows a simplified longitudinal cross section of a device according to the invention
- Furnace roll according to a further embodiment
- FIG. 4 shows a symbolically greatly simplified schematic diagram of a vacuum chamber with which a method according to the invention for producing a furnace roll according to FIG. 1 can be carried out
- FIG. 5 shows a longitudinal cross section of a wall of a wall according to the invention
- FIG. 1 shows a furnace roll 1 according to the invention-not to scale-in a simplified longitudinal cross-section.
- the furnace roller 1 comprises a roller body 2, which is formed as a cylindrical hollow body. Accordingly, the roller body 2 encloses a cavity 4. Conical end pieces 6 are attached to the end faces 8 of the roller body 2 and thereby close the cavity 4 with respect to the atmosphere A tight.
- the roller body 2 is formed as a cylindrical hollow body, the cavity 4 of the furnace roller 1 extends at least along the entire longitudinal axis 2L of the roller body 2.
- Figure 1 illustrates further that the two conical end pieces 6 are each formed as a cap member. This results in that the cavity 4 within the oven roll 1 to the end pieces 6 and
- Cap elements extends into it, when the end pieces 6 are fixed to the end faces 8 of the roller body 2.
- the furnace roller according to FIG. 1 is shown in FIG. 2 in a perspective view.
- each pin 10 are fixed, which are provided for receiving in a (not shown) bearing or the like.
- the pins 10 it is possible to drive the furnace roller 1 rotatably about its longitudinal axis.
- the cavity 4 of the furnace roller 1 is formed in the embodiment of FIG. 1 with respect to the atmosphere A tight and placed under vacuum.
- FIG. 3 shows a furnace roll 1 - not to scale - in a simplified longitudinal cross-section, according to a further embodiment of the invention.
- roller body 2 is formed as a solid cylinder, at the end faces 8, in the same manner as in Fig. 1, the two conical end pieces 6 are fixed in the form of cap elements.
- a vacuum-set cavity 4 is in the embodiment of Fig. 3 only within the two conical
- End pieces 6 are provided so that the vacuum thermal insulation is present at least for the conical end pieces 6.
- the roller body 2 in the embodiment of Fig. 3 as a cylindrical Hollow body may be formed, but the cavity is not in communication with the cavities 4 of the conical end pieces 6.
- an opening for air circulation with the atmosphere A is formed, to compensate for changes in volume of the air when it comes to the operation of a tunnel furnace to temperature fluctuations for the furnace roller 1.
- heat-insulating material is introduced, for example in the form of a refractory material.
- FIG. 4 shows in a greatly simplified manner a so-called vacuum chamber 14 in which welding work can be carried out under vacuum.
- a furnace roll 1 To produce a furnace roll 1 according to the invention, its individual components, i. the roller body 2 and the two conical end pieces 6, are introduced into the vacuum chamber 14. Subsequently, the two conical end pieces 6 are welded to the end faces 8 of the roller body 2. The attachment of the two conical end pieces 6 on the end faces 8 of the roller body 2 is symbolized in Fig. 4 by arrows.
- the electron beam (EB) welding can be used for fixing the conical end pieces 6 to the end faces 8 of the reel body 2.
- Components in the vacuum chamber 14 may be made for both the embodiment of FIG. 1 and the embodiment of FIG. 3.
- the manufacturing process in the vacuum is automatic ensures that after securing the two conical end pieces 6 at the end faces 8 of the reel body 2 of the cavity 4 thus formed and sealed to the environment is also placed under vacuum and therein the vacuum is maintained when the furnace roller 1 after completion of
- FIG. 5 shows in a greatly simplified manner a connection valve 12 which is arranged in a wall 16 of the roller body 2 or a conical end piece 6.
- the connection valve 12 is in fluid communication with the cavity 4 of the furnace roll 1.
- a connecting line (not shown) to the connecting valve 12
- the cavity 4 of the furnace roller 1 can be completely vacuum-sealed by the operation of a vacuum pump or the like.
- connection valve 12 is preferably designed as a check valve.
- the port valve 12 is such that the cavity 4, after creating a vacuum therein, is sealed from the atmosphere by the port valve 12 to hold the vacuum in the cavity.
- An opening 18 of the connection valve 12 is recessed in an outer peripheral surface 20 of the roller body 2. As a result, the opening 18 does not project beyond the outer peripheral surface 20 in the radial direction, so that rolling stock does not come into contact with the opening 18 during transport via the roller body 2.
- a vacuum chamber 14 FIG. 4
- connection valve 12 The generation of a vacuum in the cavity 4, which forms in the furnace roll 1, after the two conical end pieces 6 have been welded to the end faces 8 of the reel body 2, is possible through the connection valve 12, the connection valve 12, after the cavity 4 has been completely vacuum sealed, the cavity 4 suitably seals to the atmosphere.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Tunnel Furnaces (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014224445.5A DE102014224445A1 (de) | 2014-11-28 | 2014-11-28 | Ungekühlte Ofenrolle, und Verfahren zur Herstellung einer ungekühlten Ofenrolle |
| PCT/EP2015/074928 WO2016083055A1 (de) | 2014-11-28 | 2015-10-28 | Ungekühlte ofenrolle, und verfahren zur herstellung einer ungekühlten ofenrolle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3224561A1 true EP3224561A1 (de) | 2017-10-04 |
| EP3224561B1 EP3224561B1 (de) | 2018-10-10 |
Family
ID=54478725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15791541.4A Active EP3224561B1 (de) | 2014-11-28 | 2015-10-28 | Ungekühlte ofenrolle, und verfahren zur herstellung einer ungekühlten ofenrolle |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10088237B2 (de) |
| EP (1) | EP3224561B1 (de) |
| DE (1) | DE102014224445A1 (de) |
| ES (1) | ES2705065T3 (de) |
| WO (1) | WO2016083055A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021104560A1 (de) | 2021-02-25 | 2022-08-25 | Benteler Maschinenbau Gmbh | Ofenrolle und Rollenofen |
Family Cites Families (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2205149A1 (de) | 1972-02-03 | 1973-08-09 | Schmidt & Clemens Edelstahlwer | Industrieofen-transportrolle |
| US3802495A (en) * | 1972-09-18 | 1974-04-09 | Combustion Eng | Internally fluid cooled rotatable roll |
| US3860387A (en) | 1973-11-09 | 1975-01-14 | Bricmont & Ass Inc | Roller for supporting a workpiece in a furnace or the like |
| DE3642512A1 (de) | 1986-12-12 | 1988-07-14 | Carsten Dipl Ing Oestmann | Rollenkoerper aus verbundwerkstoff |
| US5031338A (en) * | 1987-02-13 | 1991-07-16 | Beloit Corporation | Vacuum roll transfer apparatus |
| US5152078A (en) * | 1987-02-13 | 1992-10-06 | Beloit Corporation | Vacuum roll transfer apparatus |
| DE3807240C1 (de) | 1988-03-05 | 1989-06-01 | Didier Engineering Gmbh, 4300 Essen, De | |
| US4991276A (en) | 1989-07-31 | 1991-02-12 | Bricmanage, Inc. | Flexible conveyance and guidance roller for use in metalworking furnace structures |
| DE4005900A1 (de) | 1990-02-24 | 1991-08-29 | Loi Ind Ofenanlagen | Scheibenrolle fuer rollenherdoefen |
| US5205398A (en) * | 1990-07-27 | 1993-04-27 | Eltech Systems Corporation | Insulating roll cover |
| JPH04285132A (ja) | 1991-03-12 | 1992-10-09 | Nippon Steel Corp | ストリップ連続熱処理設備 |
| JPH05105938A (ja) | 1991-10-11 | 1993-04-27 | Kobe Steel Ltd | ハースロールの製作方法 |
| DE4141250C2 (de) | 1991-12-14 | 1993-10-14 | Loi Ind Ofenanlagen | Rolle für Rollenherdöfen und Verfahren zu ihrer Herstellung |
| JPH05222442A (ja) | 1992-02-10 | 1993-08-31 | Kobe Steel Ltd | ハースロール |
| US5230618A (en) | 1992-02-24 | 1993-07-27 | Bricmanage, Inc. | Insulated furnace roller |
| US5362230A (en) * | 1993-03-24 | 1994-11-08 | Italimpianti Of America, Inc. | Rolls for high temperature roller hearth furnaces |
| IT1262286B (it) | 1993-07-23 | 1996-06-19 | Stefano Deplano | Rullo per forni,in particolare per forni siderurgici per il riscaldo di bramme, o simili. |
| FI100200B (fi) | 1993-10-20 | 1997-10-15 | Valmet Paper Machinery Inc | Termotelan akselin eristyssovitelma ja eristyskappale |
| JPH09194930A (ja) | 1996-01-19 | 1997-07-29 | Nkk Corp | 金属帯の連続熱処理炉用ハースロール |
| JPH09194929A (ja) | 1996-01-19 | 1997-07-29 | Nkk Corp | 金属帯の連続熱処理炉用ハースロール |
| FI98386C (fi) * | 1996-03-07 | 1997-06-10 | Valmet Corp | Imutela/imusylinteri |
| US5833455A (en) | 1996-05-14 | 1998-11-10 | Bricmont, Inc. | Dry roll furnace arrangement |
| JPH10311685A (ja) | 1997-05-09 | 1998-11-24 | Nippon Carbon Co Ltd | C/c材を用いた熱処理炉搬送ロールの軸 |
| DE10012940A1 (de) | 2000-03-16 | 2001-09-20 | Loi Thermprocess Gmbh | Scheibenrolle für Rollenherdöfen |
| DE10047046A1 (de) | 2000-09-22 | 2002-04-11 | Sms Demag Ag | Kühlbare Ofenrolle, insbesondere für einen Rollenherdofen |
| US6435867B1 (en) | 2000-11-10 | 2002-08-20 | Bricmont, Inc. | Furnace roller and cast tire therefor |
| KR100400003B1 (ko) * | 2000-12-22 | 2003-09-29 | 삼성전자주식회사 | 전자사진 화상형성 장치의 정착 롤러 장치 |
| DE10223639B4 (de) | 2002-05-28 | 2006-02-23 | Thyssenkrupp Steel Ag | Gekühlte Transportrolle für einen Ofen zur Wärmebehandlung von Körpern, insbesondere Brammen |
| DE102004032143A1 (de) | 2004-07-02 | 2006-01-19 | H. Butting Gmbh & Co. Kg | Ofenrolle sowie Verfahren zur Vorwärmung von Verbrennungsluft für Wärmebehandlungsöfen |
| JP5418300B2 (ja) | 2010-02-26 | 2014-02-19 | 株式会社Ihi | 炉内搬送用ロール |
| JP5663922B2 (ja) | 2010-03-30 | 2015-02-04 | Jfeスチール株式会社 | 鋼材熱処理炉用搬送ロール |
| JP5794614B2 (ja) | 2011-03-29 | 2015-10-14 | 国立大学法人九州工業大学 | 加熱炉用ローラー |
| CN203559075U (zh) | 2013-09-30 | 2014-04-23 | 南阳汉冶特钢有限公司 | 一种不结瘤非水冷辊底式热处理炉辊 |
| CN203904393U (zh) | 2014-06-16 | 2014-10-29 | 中冶京诚(扬州)冶金科技产业有限公司 | 一种无水冷抗变形炉辊 |
-
2014
- 2014-11-28 DE DE102014224445.5A patent/DE102014224445A1/de not_active Withdrawn
-
2015
- 2015-10-28 ES ES15791541T patent/ES2705065T3/es active Active
- 2015-10-28 WO PCT/EP2015/074928 patent/WO2016083055A1/de not_active Ceased
- 2015-10-28 US US15/529,544 patent/US10088237B2/en not_active Expired - Fee Related
- 2015-10-28 EP EP15791541.4A patent/EP3224561B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| ES2705065T3 (es) | 2019-03-21 |
| DE102014224445A1 (de) | 2016-06-02 |
| EP3224561B1 (de) | 2018-10-10 |
| US10088237B2 (en) | 2018-10-02 |
| WO2016083055A1 (de) | 2016-06-02 |
| US20170307295A1 (en) | 2017-10-26 |
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