EP0108047B1 - Stossofen - Google Patents

Stossofen Download PDF

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Publication number
EP0108047B1
EP0108047B1 EP83890165A EP83890165A EP0108047B1 EP 0108047 B1 EP0108047 B1 EP 0108047B1 EP 83890165 A EP83890165 A EP 83890165A EP 83890165 A EP83890165 A EP 83890165A EP 0108047 B1 EP0108047 B1 EP 0108047B1
Authority
EP
European Patent Office
Prior art keywords
sliding
rails
furnace
pusher
shoes
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
EP83890165A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0108047A1 (de
Inventor
Peter Dipl.-Ing. Ebner
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.)
Ebner Industrieofenbau GmbH
Original Assignee
Ebner Industrieofenbau GmbH
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 Ebner Industrieofenbau GmbH filed Critical Ebner Industrieofenbau GmbH
Publication of EP0108047A1 publication Critical patent/EP0108047A1/de
Application granted granted Critical
Publication of EP0108047B1 publication Critical patent/EP0108047B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
    • F27B9/26—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path on or in trucks, sleds, or containers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
    • F27B9/22—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path on rails, e.g. under the action of scrapers or pushers
    • 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

Definitions

  • the invention relates to a push furnace with rails for sliding shoes that carry the material to be transported through the furnace, and with sliding elements that reduce the friction between the rails and the sliding shoes.
  • Such pusher furnaces are generally used for the annealing treatment of bars made of aluminum or aluminum alloys, the bars, which can have a weight of several tons, are usually foamed through the furnace with the aid of a hydraulic pusher.
  • FR-A-2498308 which have an essentially U-shaped cross section of sliding shoes to be provided on its inner web side with at least one sliding element, which is preferably designed as a sliding strip running lengthwise in the thrust direction and consisting of an alloy with colloidal graphite as a self-lubricant.
  • the arrangement or attachment of the sliding elements on the sliding shoes has various disadvantages.
  • the sliding shoes are loaded outside the furnace, then have to pass through the furnace and finally have to leave the furnace again, they are exposed to a shock-like temperature change, which places considerable stress on the sliding elements. If there are differences in height at the unavoidable rail joints, the sliding elements can easily break out on their end faces. There is also a risk of breakage for the sliding elements due to shock loads, e.g. when placing heavy ingots on the sliding shoes. The material waste that occurs when the sliding elements break out on the one hand and the normal material abrasion on the other hand inevitably remain on the rails and naturally impair the sliding properties of the sliding elements of the subsequent sliding shoes. Finally, there is a risk that loosening the fasteners, e.g. the screws for which the sliding elements on the sliding shoes block the transport of shoes inside or outside the furnace, which can result in severe damage to the entire furnace by the upright bars being tipped over.
  • the fasteners e.g. the screws for which the sliding elements on the sliding shoes block the transport of shoes inside or outside the furnace,
  • the invention is therefore based on the object of eliminating these deficiencies and creating a pusher furnace of the type described in the introduction, in which the friction between the rails and the slide shoes and also the breakaway forces at the start of the pusher process are significantly reduced without endangering the slide elements or have to accept an impairment of their sliding properties or other damage.
  • the invention solves this problem in that the sliding elements are designed as a plurality of sliding plates inserted one behind the other in flat recesses on the upper side of the rails.
  • the sliding elements are no longer on the inside or Bottom of the web of the slide shoes attached, but arranged on the top of the rails. They therefore always remain in the same place, i.e. at the same operating temperature, and are not subjected to shock-like changes in temperature.
  • the sliding plates arranged in two longitudinal rows have surface grooves that run obliquely to the longitudinal direction of the rails, the surface grooves of the sliding plates in one longitudinal row being arranged in mirror image of the surface grooves of the sliding plates forming the other longitudinal row.
  • the abrasion and the like. discharged from the sliding shoes over it into the free space outside the relevant sliding plate, the mirror-image arrangement of the surface grooves causing a cancellation of frictional forces occurring transversely to the longitudinal direction of the rail.
  • a particularly advantageous embodiment is achieved in that the sliding plates each cover the rail joint, so that slight differences in height of the rail pieces in the joint region are compensated for.
  • Heating burners 2 are installed in the ceiling of a furnace 1.
  • a ceiling fan 3 and gas baffles 4 are provided for circulating the furnace gases.
  • Rails 5 are mounted on supports on the bottom of the furnace 1, on which sliding shoes 6 can be moved, which hit the material to be treated, for example rolled bars 7. 2, the rails 5 have flat recesses 8 on their upper side, in which sliding elements in the form of sliding plates 9 are inserted.
  • the sliding plates 9 are arranged on each rail 5 in two longitudinal rows and are spaced within the rows and between them, so that free spaces are formed in which abrasion and the like. can collect without affecting the sliding properties.
  • the rails 5 consist of sections 5a (Fig. 3), wherein the rail joint is bridged by sliding plates 9. As shown in FIG. 4, the sliding plates 9 forming one longitudinal row can also be offset in the longitudinal direction of the rail compared to the sliding plates 9a arranged in the other longitudinal row.
  • the cross-sectional shape of the rails can be selected differently, the only important thing is that there is a flange on both long sides, which the shoes can grip under.
  • the sliding plates 9 and 9a preferably consist of a sintered material in a special alloy.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Vending Machines For Individual Products (AREA)
EP83890165A 1982-10-01 1983-09-21 Stossofen Expired EP0108047B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0363582A AT382956B (de) 1982-10-01 1982-10-01 Stossofen
AT3635/82 1982-10-01

Publications (2)

Publication Number Publication Date
EP0108047A1 EP0108047A1 (de) 1984-05-09
EP0108047B1 true EP0108047B1 (de) 1986-02-26

Family

ID=3553248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83890165A Expired EP0108047B1 (de) 1982-10-01 1983-09-21 Stossofen

Country Status (9)

Country Link
US (1) US4540364A (enExample)
EP (1) EP0108047B1 (enExample)
JP (1) JPS59100210A (enExample)
AT (1) AT382956B (enExample)
CA (1) CA1170448A (enExample)
DE (1) DE3362325D1 (enExample)
ES (1) ES8407104A1 (enExample)
IN (1) IN158243B (enExample)
NO (1) NO157632C (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4420464A1 (de) * 1994-06-13 1995-12-14 Loi Ind Ofenanlagen Ofen zum Erwärmen von Werkstücken
DE19949406A1 (de) * 1999-10-13 2001-05-03 Junker Gmbh O Stoßofen
DE102015220908A1 (de) 2015-09-15 2017-03-16 Sms Group Gmbh Verfahren zum Betreiben eines Ofens und Ofen

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH684124A5 (de) * 1991-11-21 1994-07-15 Gautschi Electro Fours Sa Transporteinrichtung für Stoss- oder Durchlauföfen.
JPH0752830A (ja) * 1994-03-22 1995-02-28 Iseki & Co Ltd トラクタのフェンダ
US7674109B2 (en) * 2005-12-07 2010-03-09 Ajax Tocco Magnethermic Corporation Guidance system for pusher plate for use in pusher furnaces
CN108036641A (zh) * 2017-12-25 2018-05-15 江苏三恒高技术窑具有限公司 一种高温推板窑炉用高强耐磨推板

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE597928C (de) * 1934-06-05 Johannes Rothe Wassergekuehlte Gleitschiene
US1647665A (en) * 1925-02-16 1927-11-01 Jacob P Riche Support for metal trays
US1851913A (en) * 1931-02-24 1932-03-29 Edward A Lange Heat treating apparatus
DE925950C (de) * 1952-01-10 1955-04-04 Degussa Verfahren zur Herstellung von Gleitbahnen in Ofenherden, insbesondere in metallurgischen OEfen
GB931261A (en) * 1960-10-01 1963-07-17 Kloeckner Werke Ag Improvements in or relating to slide rails for furnaces
DE2039507C3 (de) * 1970-08-08 1973-12-06 Huettenwerk Oberhausen Ag, 4200 Oberhausen Aufsatzstucke für wassei gekühlte Tragrohre eines Stoßofens
DE2508206A1 (de) * 1975-02-26 1976-09-09 Koppers Wistra Ofenbau Gmbh Tragschiene fuer waermoefen
DE2656989A1 (de) * 1976-12-16 1978-06-22 Riedhammer Ludwig Fa Tunnelofen zum sintern von ferriten in schutzgasatmosphaere mit vorwaermzone, hochtemperaturzone und abkuehlzone und mit gleitend durch den tunnelofen bewegten foerderelementen
US4125365A (en) * 1977-04-07 1978-11-14 Oliver Machinery Company Roll through billet heater
DE2849655C3 (de) * 1978-11-16 1981-07-16 Keller Ofenbau GmbH, 4530 Ibbenbüren Transportbahn in einem Tunnelofen zum Brennen von keramischem Gut
JPS58730B2 (ja) * 1979-12-26 1983-01-07 ロザイ工業株式会社 プツシヤ−方式加熱炉
CH651919A5 (de) * 1981-01-16 1985-10-15 Gautschi Electro Fours Sa Gleitschuh fuer stossoefen.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4420464A1 (de) * 1994-06-13 1995-12-14 Loi Ind Ofenanlagen Ofen zum Erwärmen von Werkstücken
DE19949406A1 (de) * 1999-10-13 2001-05-03 Junker Gmbh O Stoßofen
DE102015220908A1 (de) 2015-09-15 2017-03-16 Sms Group Gmbh Verfahren zum Betreiben eines Ofens und Ofen

Also Published As

Publication number Publication date
JPS59100210A (ja) 1984-06-09
NO833461L (no) 1984-04-02
NO157632C (no) 1988-04-20
EP0108047A1 (de) 1984-05-09
ES526162A0 (es) 1984-08-16
IN158243B (enExample) 1986-10-04
NO157632B (no) 1988-01-11
ES8407104A1 (es) 1984-08-16
CA1170448A (en) 1984-07-10
AT382956B (de) 1987-05-11
US4540364A (en) 1985-09-10
DE3362325D1 (en) 1986-04-03
ATA363582A (de) 1986-09-15

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