EP0633439A1 - Perfectionnements apportés aux rouleaux refroidis pour la manutention de produits, notamment métallurgiques et sidérurgiques - Google Patents
Perfectionnements apportés aux rouleaux refroidis pour la manutention de produits, notamment métallurgiques et sidérurgiques Download PDFInfo
- Publication number
- EP0633439A1 EP0633439A1 EP94401450A EP94401450A EP0633439A1 EP 0633439 A1 EP0633439 A1 EP 0633439A1 EP 94401450 A EP94401450 A EP 94401450A EP 94401450 A EP94401450 A EP 94401450A EP 0633439 A1 EP0633439 A1 EP 0633439A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooled
- products
- screens
- rollers according
- central shaft
- 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.)
- Withdrawn
Links
Images
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
-
- 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
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0012—Rolls; Roll arrangements
Definitions
- the present invention relates to improvements made to the rollers which are used in particular in heat treatment ovens for handling product, for example metallurgical and steel products, moving inside such ovens.
- the means for ensuring the movement of the product for example metallurgical or steel, inside the furnace, are made so as to allow movement of this product at different speeds, slow or high , this in order to take into account industrial imperatives.
- the lifetime of the handling and conveying means in the furnace must be sufficiently long with respect to the other mechanical systems used in the furnace, that is to say that the handling means must be able to maintain, over time, their initial level of performance.
- the handling and conveying rollers must be designed and produced so as to ensure good guiding of the products throughout the oven and so that the thermal marking of the products by the rollers is as low as possible.
- rollers In the installations of the roller type, the technique of conventional rollers made of centrifuged refractory steel is known. These rollers have the disadvantage of being at the limit of possible for temperatures greater than or equal to 1,100 ° C; this type of roller comprising a central water-cooled tube requiring a large installed heating power, as regards the oven, this in order to compensate for the heat losses resulting from the cooling of the tubes of the rollers.
- the present holder has recently developed a system of cooled rollers which is described in particular in FR-A-2 632 286.
- This system consists of making the handling rollers from a central shaft cooled for example by water, on which discs are mounted, separated using an insulating refractory, these discs arranged perpendicular to the longitudinal axis of the roller serving as a support for the products to be handled and conveyed.
- the invention proposes to provide a new type of cooled roller which does not have the drawbacks mentioned above of roller handling systems according to the prior art.
- the invention relates to cooled rollers for handling and conveying products, and in particular metallurgical and steel products, moving inside an oven, each of these rollers consisting of a central shaft cooled by water on which discs are mounted perpendicular to said central shaft, to serve as a support for the products, characterized in that there is, around said central shaft, one or more screens providing thermal insulation, opposing radiative heat transfers between the atmosphere of the oven and the cooled shaft of said roller.
- said rollers providing thermal insulation may possibly be of cylindrical, conical, frustoconical shape, or of any other shape making it possible to avoid said radiative thermal transfers.
- the heat shields are made sufficiently thin and conductive in order to be considered isothermal, thus ensuring a purely radiative insulation.
- the thermal screens are produced so as to provide both radiative and conductive insulation, the nature and the thickness of said screens then being determined so as to allow the establishment of a gradient of significant temperature within them.
- the flow exchanged between the atmosphere of the furnace and the cooled shaft 10 of the roller is minimized by one or more screens, which in this nonlimiting exemplary embodiment are produced in the form of cylindrical heat screens 14 , and arranged around the cooled shaft 10.
- these heat shields 14 can have any other suitable shape such as for example conical, frustoconical, etc.
- said screens can be made of a metal or alloy or any other material sufficiently resistant to impact.
- the cooled rollers thus perfected according to the invention make it possible to obtain insulations which have good mechanical resistance to impacts with the products handled, combined with resistance over time which is considerably increased compared to the rollers according to the prior art. This increases the reliability of handling systems comprising such rollers, which reduces maintenance to a minimum.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9421957U DE9421957U1 (de) | 1993-07-09 | 1994-06-27 | Verbesserungen für gekühlte Walzen zur Handhabung von Werkstücken, insbesondere von metallurgischen und Eisenhütten-Werkstücken |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9308508 | 1993-07-09 | ||
FR9308508A FR2707272B1 (fr) | 1993-07-09 | 1993-07-09 | Perfectionnements apportés aux rouleaux refroidis pour la manutention de produits notamment métallurgiques et sidérurgiques. |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0633439A1 true EP0633439A1 (fr) | 1995-01-11 |
Family
ID=9449137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94401450A Withdrawn EP0633439A1 (fr) | 1993-07-09 | 1994-06-27 | Perfectionnements apportés aux rouleaux refroidis pour la manutention de produits, notamment métallurgiques et sidérurgiques |
Country Status (10)
Country | Link |
---|---|
US (1) | US5431375A (zh) |
EP (1) | EP0633439A1 (zh) |
JP (1) | JPH07173525A (zh) |
CN (1) | CN1041751C (zh) |
CA (1) | CA2127343A1 (zh) |
DE (1) | DE633439T1 (zh) |
ES (1) | ES2069516T1 (zh) |
FR (1) | FR2707272B1 (zh) |
IT (1) | IT232437Y1 (zh) |
MY (1) | MY111112A (zh) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4172913B2 (ja) | 1998-03-19 | 2008-10-29 | シーメンス アクチエンゲゼルシヤフト | 燃焼器用壁セグメントおよび燃焼器 |
US6299264B1 (en) * | 1999-01-27 | 2001-10-09 | Caterpillar Inc. | Heat shielded mid-roller |
US7919041B2 (en) * | 2005-09-13 | 2011-04-05 | Posco | Hearth roll apparatus for annealing furnace |
CN102382971B (zh) * | 2010-08-31 | 2013-11-06 | 本田技研工业株式会社 | 金属环用搬送架和金属环的装载方法 |
US20210061575A1 (en) * | 2018-04-02 | 2021-03-04 | Noritake Co., Limited | Conveyance roller for heating furnace |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2713741A1 (de) * | 1977-03-29 | 1978-10-05 | Thyssen Edelstahlwerke Ag | Fuehrungsrolle mit waermestrahlungsschutz |
FR2391442A1 (fr) * | 1977-05-20 | 1978-12-15 | Koppers Wistra Ofenbau Gmbh | Rouleau pour four a sole a rouleaux |
FR2498164A1 (fr) * | 1981-01-22 | 1982-07-23 | Nippon Steel Corp | Rouleau de transport pour transporter un materiau chaud et train de tels rouleaux de transport |
DE3740620C1 (en) * | 1987-12-01 | 1988-06-23 | Didier Eng | Conveying roller for a roller hearth furnace |
EP0345147A1 (fr) * | 1988-06-02 | 1989-12-06 | Stein Heurtey | Rouleau pour la manutention de produits sidérurgiques se déplaçant à l'intérieur d'un four |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4025935A1 (de) * | 1990-08-16 | 1992-02-20 | Didier Werke Ag | Rolle fuer einen rollenofen |
US5238230A (en) * | 1992-06-15 | 1993-08-24 | Cochran Johnny W | Insulation members for slab reheat furnace |
-
1993
- 1993-07-09 FR FR9308508A patent/FR2707272B1/fr not_active Expired - Fee Related
-
1994
- 1994-06-27 EP EP94401450A patent/EP0633439A1/fr not_active Withdrawn
- 1994-06-27 ES ES94401450T patent/ES2069516T1/es active Pending
- 1994-06-27 DE DE0633439T patent/DE633439T1/de active Pending
- 1994-07-04 CA CA002127343A patent/CA2127343A1/fr not_active Abandoned
- 1994-07-07 US US08/271,666 patent/US5431375A/en not_active Expired - Lifetime
- 1994-07-07 CN CN94108144A patent/CN1041751C/zh not_active Expired - Fee Related
- 1994-07-07 MY MYPI94001765A patent/MY111112A/en unknown
- 1994-07-07 JP JP6155838A patent/JPH07173525A/ja active Pending
-
1998
- 1998-01-22 IT IT98MI000036U patent/IT232437Y1/it active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2713741A1 (de) * | 1977-03-29 | 1978-10-05 | Thyssen Edelstahlwerke Ag | Fuehrungsrolle mit waermestrahlungsschutz |
FR2391442A1 (fr) * | 1977-05-20 | 1978-12-15 | Koppers Wistra Ofenbau Gmbh | Rouleau pour four a sole a rouleaux |
FR2498164A1 (fr) * | 1981-01-22 | 1982-07-23 | Nippon Steel Corp | Rouleau de transport pour transporter un materiau chaud et train de tels rouleaux de transport |
DE3740620C1 (en) * | 1987-12-01 | 1988-06-23 | Didier Eng | Conveying roller for a roller hearth furnace |
EP0345147A1 (fr) * | 1988-06-02 | 1989-12-06 | Stein Heurtey | Rouleau pour la manutention de produits sidérurgiques se déplaçant à l'intérieur d'un four |
Also Published As
Publication number | Publication date |
---|---|
CA2127343A1 (fr) | 1995-01-10 |
CN1041751C (zh) | 1999-01-20 |
DE633439T1 (de) | 1995-09-28 |
IT232437Y1 (it) | 2000-01-10 |
US5431375A (en) | 1995-07-11 |
ES2069516T1 (es) | 1995-05-16 |
CN1102860A (zh) | 1995-05-24 |
MY111112A (en) | 1999-08-30 |
JPH07173525A (ja) | 1995-07-11 |
ITMI980036U1 (it) | 1995-01-09 |
FR2707272A1 (fr) | 1995-01-13 |
FR2707272B1 (fr) | 1995-09-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE DE ES GB IT LU |
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17P | Request for examination filed |
Effective date: 19950130 |
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ITCL | It: translation for ep claims filed |
Representative=s name: BARZANO' E ZANARDO MILANO S.P.A. |
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GBC | Gb: translation of claims filed (gb section 78(7)/1977) | ||
REG | Reference to a national code |
Ref country code: ES Ref legal event code: BA2A Ref document number: 2069516 Country of ref document: ES Kind code of ref document: T1 |
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DET | De: translation of patent claims | ||
17Q | First examination report despatched |
Effective date: 19960119 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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110E | Request filed for conversion into a national patent application [according to art. 135 epc] |
Effective date: 19970116 |
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18W | Application withdrawn |
Withdrawal date: 19970116 |