EP0069613B1 - Materialträger für einen Ofen der Stahlindustrie - Google Patents

Materialträger für einen Ofen der Stahlindustrie Download PDF

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Publication number
EP0069613B1
EP0069613B1 EP82401072A EP82401072A EP0069613B1 EP 0069613 B1 EP0069613 B1 EP 0069613B1 EP 82401072 A EP82401072 A EP 82401072A EP 82401072 A EP82401072 A EP 82401072A EP 0069613 B1 EP0069613 B1 EP 0069613B1
Authority
EP
European Patent Office
Prior art keywords
carrier
casing
height
substantially equal
base
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
Application number
EP82401072A
Other languages
English (en)
French (fr)
Other versions
EP0069613A1 (de
Inventor
Michel Henri Camille Denis
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
Fives Stein 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, Fives Stein SA filed Critical Stein Heurtey SA
Publication of EP0069613A1 publication Critical patent/EP0069613A1/de
Application granted granted Critical
Publication of EP0069613B1 publication Critical patent/EP0069613B1/de
Expired 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
    • F27D3/022—Skids
    • F27D3/024—Details of skids, e.g. riders
    • 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
    • F27D5/00—Supports, screens, or the like for the charge within the furnace

Definitions

  • the products in particular steel slabs, which are heated before rolling in ovens, are supported on sleepers (or chenets) cooled by water or steam circulation, by means of supports called studs or buttons.
  • These studs are, in general, cylindrical in shape and placed on the chenet tubes at regular intervals and maintained by welding on the tube. They are coated, over part of their height by the insulating refractory lining which surrounds the chenet.
  • the interval between the chenet and the slab is determined by the height of the stud. However, it is difficult to greatly increase this height.
  • the part of the stud that emerges from the refractory lining receives radiation from the oven and its temperature increases rapidly with height.
  • the subject of the present invention is a product pad or support in a steel furnace which can have a support height as large as necessary, without reaching a prohibitive temperature.
  • This support is characterized in that it comprises a peripheral recess which extends from the base of the support but has a height less than that of this support, and in which is housed an insulating envelope, made of fibrous material, the outside diameter of this envelope being practically equal to that of the upper part of said support.
  • the fibrous insulating envelope of the pad which is independent of the refractory lining of the chenet, removes the pad from the radiation of the oven and makes its temperature not very dependent on its height.
  • the diameter of the upper part of the stud being practically equal to the diameter of the envelope, this upper part covers the envelope which is very fragile and protects it from mechanical actions due to the presence of the products supported by the stud, in particular from friction and of the scale fall.
  • the stud is advantageously made of refractory steel, for example cobalt steel. It can be in one piece. But it can also include a lower element whose height is substantially equal to that of the envelope and whose outer diameter is substantially equal to the inner diameter of the envelope, this element being fitted into said envelope so that their upper faces are at the same level, and an upper element which is fixed on the lower element and whose diameter is substantially equal to that of the envelope.
  • the pad according to the invention comprises a lower element 1 and an upper element 2; the latter has a larger diameter than that of the element 1, which determines at the periphery of the stud a recess in which is housed an insulating envelope 3, for example of fibrous structure.
  • This envelope extends to the level of the lower face of the element 2 and its outside diameter is equal to that of this element 2.
  • the elements 1 and 2 are made of refractory steel, for example cobalt steel.
  • the height of element 2 is approximately between 0.2 and 0.4 times the total height of the stud.
  • the upper element 2 has at its base a central shank 2a passing through an axial hole 1a of the element 1.
  • the fixing of the two elements to each other is ensured by an oblique key (4) which passes through holes 5 and 6 formed respectively in element 1 and in the tail 2a of element 2.
  • the element 1 has at its base an axial recess 1b, which reduces the section offered to the heat flow from the upper element of the stud. Its lower face 1c is rounded to the profile of a chenet. It is intended to be welded to the chenet by this rounded face 1c.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Claims (6)

1. Produktträger für einen Ofen der Eisenhüttenindustrie, dadurch gekennzeichnet, daß er eine Randaussparung aufweist, die sich von der Basis des Trägers an bis zu einer Höhe, die kleiner ist als die Höhe des Trägers erstreckt und in der eine isolierende Ummantelung (3) aus faserigem Material angeordnet ist, wobei der Außendurchmesser dieser Ummantelung praktisch gleich dem Außendurchmesser des Oberteils des Trägers ist.
2. Träger nach Anspruch 1, dadurch gekennzeichnet, daß er aus schwer schmelzbarem Stahl besteht.
3. Träger nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß er ein unteres Element (1) aufweist, dessen Höhe im wesentlichen gleich der Höhe der Ummantelung (3) ist und dessen Außendurchmesser im wesentlichen gleich dem Innendurchmesser der Ummantelung (3) ist, wobei dieses Element (1) in besagte Ummantelung eingepreßt ist derart, daß ihre oberen Oberflächen auf gleicher Höhe liegen, und daß er ein oberes Element (2) aufweist, das auf dem unteren Element (1) befestigt ist und dessen Durchmesser im wesentlichen gleich dem Durchmesser der Ummantelung ist.
4. Träger nach Anspruch 3, dadurch gekennzeichnet, daß das obere Element (2) an seiner Basis einen zentralen Zapfen (2a) aufweist, der in einem axialen Loch (1a) des unteren Elementes (1) angeordnet ist.
5. Träger nach Anspruch 4, dadurch gekennzeichnet, daß ein Befestigungskeil (4) durch jeweils im unteren Element (1) und im Zapfen (2a) des oberen Elementes (2) angeordnete schräge Bohrungen (5 und 6) hindurchgeführt ist.
6. Träger nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß er an seiner Basis eine sich nach außen öffnende axiale Aussparung (1 b) aufweist.
EP82401072A 1981-07-01 1982-06-14 Materialträger für einen Ofen der Stahlindustrie Expired EP0069613B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8113205 1981-07-01
FR8113205A FR2509027B1 (fr) 1981-07-01 1981-07-01 Support de produits pour four siderurgique

Publications (2)

Publication Number Publication Date
EP0069613A1 EP0069613A1 (de) 1983-01-12
EP0069613B1 true EP0069613B1 (de) 1986-03-05

Family

ID=9260222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401072A Expired EP0069613B1 (de) 1981-07-01 1982-06-14 Materialträger für einen Ofen der Stahlindustrie

Country Status (6)

Country Link
US (1) US4427187A (de)
EP (1) EP0069613B1 (de)
BE (1) BE893819A (de)
DE (1) DE3269601D1 (de)
FR (1) FR2509027B1 (de)
IN (1) IN157595B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5232359A (en) * 1991-07-26 1993-08-03 Campbell Frank Jun Device for increasing the thermal radiation heat transfer on an object in a furnace
US5370530A (en) * 1993-03-24 1994-12-06 Italimpianti Of America, Inc. Rolls for high temperature roller hearth furnaces
US5362230A (en) * 1993-03-24 1994-11-08 Italimpianti Of America, Inc. Rolls for high temperature roller hearth furnaces
US6179610B1 (en) 1999-12-30 2001-01-30 Paul V. Suey Composite refractory tile for metallurgical furnace members
US6575738B1 (en) 2002-08-16 2003-06-10 Carole S. Nguyen Composite refractory insulating tile

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1424319A (en) * 1920-11-02 1922-08-01 John P Northey Key bolt
US3015478A (en) * 1958-11-20 1962-01-02 Seias Corp Of America Furnace
FR1325350A (fr) * 1962-06-12 1963-04-26 Brockmann & Bundt Ind Ofenbau Système d'avancement pour fours à pas de pèlerin
DE2430490B2 (de) * 1974-06-25 1979-08-30 Hans Christoph Dr.-Ing. 5810 Witten Pohl Ober- unterbeheizter Stoßofen
IT1052862B (it) * 1975-01-11 1981-07-20 Krupp Ag Huettenwerke Elemento tubolare portante per forni per trattamenti termici
FR2484620A1 (fr) * 1980-05-06 1981-12-18 Produits Refractaires Plots refractaires pour fours a longerons

Also Published As

Publication number Publication date
DE3269601D1 (en) 1986-04-10
BE893819A (fr) 1982-11-03
IN157595B (de) 1986-05-03
FR2509027B1 (fr) 1986-08-22
FR2509027A1 (fr) 1983-01-07
US4427187A (en) 1984-01-24
EP0069613A1 (de) 1983-01-12

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