EP0633439A1 - Gekühlte Rollen zum Bewegen von Gegenständen, insbesondere von metallurgischen Gegenständen - Google Patents

Gekühlte Rollen zum Bewegen von Gegenständen, insbesondere von metallurgischen Gegenständen Download PDF

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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Withdrawn
Application number
EP94401450A
Other languages
English (en)
French (fr)
Inventor
Jean-Christophe Mitais
Philippe Buchet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fives Stein SA
Original Assignee
Stein Heurtey SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Stein Heurtey SA filed Critical Stein Heurtey SA
Priority to DE9421957U priority Critical patent/DE9421957U1/de
Publication of EP0633439A1 publication Critical patent/EP0633439A1/de
Withdrawn legal-status Critical Current

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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)
EP94401450A 1993-07-09 1994-06-27 Gekühlte Rollen zum Bewegen von Gegenständen, insbesondere von metallurgischen Gegenständen Withdrawn EP0633439A1 (de)

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 (de) 1995-01-11

Family

ID=9449137

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94401450A Withdrawn EP0633439A1 (de) 1993-07-09 1994-06-27 Gekühlte Rollen zum Bewegen von Gegenständen, insbesondere von metallurgischen Gegenständen

Country Status (10)

Country Link
US (1) US5431375A (de)
EP (1) EP0633439A1 (de)
JP (1) JPH07173525A (de)
CN (1) CN1041751C (de)
CA (1) CA2127343A1 (de)
DE (1) DE633439T1 (de)
ES (1) ES2069516T1 (de)
FR (1) FR2707272B1 (de)
IT (1) IT232437Y1 (de)
MY (1) MY111112A (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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 (de) * 1988-06-02 1989-12-06 Stein Heurtey Rolle für die Handhabung von Produkten der Eisen- und Stahlindustrie, gefördert in einem Ofen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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 (de) * 1988-06-02 1989-12-06 Stein Heurtey Rolle für die Handhabung von Produkten der Eisen- und Stahlindustrie, gefördert in einem Ofen

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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