US3792965A - Walking beam furnace - Google Patents

Walking beam furnace Download PDF

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Publication number
US3792965A
US3792965A US00202814A US3792965DA US3792965A US 3792965 A US3792965 A US 3792965A US 00202814 A US00202814 A US 00202814A US 3792965D A US3792965D A US 3792965DA US 3792965 A US3792965 A US 3792965A
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US
United States
Prior art keywords
hearth
walking
walking beams
beams
lifting
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 - Lifetime
Application number
US00202814A
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English (en)
Inventor
A Bengtsson
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TABOUGNAR AB
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TABOUGNAR AB
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Filing date
Publication date
Application filed by TABOUGNAR AB filed Critical TABOUGNAR AB
Application granted granted Critical
Publication of US3792965A publication Critical patent/US3792965A/en
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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 tunnel furnace
    • F27B9/201—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 tunnel furnace walking beam furnace
    • F27B9/202—Conveyor mechanisms therefor

Definitions

  • ABSTRACT A furnace of the walking beam type in which the portion of the hearth located between two walking beams can be lifted above the level assumed by the walking beams during the feeding movement in order to permit the feed of the charge to be interrupted without the necessity for stopping the feeding movement of 2 Claims, 1 Drawing Figure [5 6] References Cited UNITED STATES PATENTS 3,662,876 5/1972 Hollis 198/219 3,565,241 2/1971 Race 198/219 3,554,505 l/1971 Deimpulss ..432/122 the beams 3,567,198 3/1971 Gentry ..432/34- I13 mi l 11 1 WALKING BEAM FURNACE This invention relates to a walking beam furnace and its object is to produce a furnace at which the feed of the charges within some part of the furnace can be interrupted without requiring the feeding movements of the walking beam
  • the invention is characterized in that the hearth portion located between two walking beams at least to a part of the furnace length can be lifted above the level assumed by the walking beams during the feeding movement.
  • the walking beam furnace comprises a hearth zone 1 with walls 2, 3 and a roof (not shown). Beneath the hearth zone 1 a machine room 4 is located which includes the drive mechanisms 5 and 6 for the walking beams 7 and 8.
  • the walking beams 7 and 8 can in a usual way carry out reciprocating movements such, that the beams in their forward movement are lifted to lift the charges 9 from the hearth plane.
  • the hearth comprises four longitudinal ridges 10, 11, 12 and 13, of which the ridges 10 and 11 are located each on one side of the walking beam 8 and the ridges 12 and 13 each on one side of the walking beam 7.
  • the walking beams move forwards and rear wards and, respectively, upwards and downwards, with gaps between the sides of the ridges and the outsides of the walking beams.
  • the drive mechanisms 5 and 6 for the walking beams are constructed in a conventional way and will not be described in greater detail in the present invention.
  • the two central ridges 11 and 12 located between the walking beams are according to the invention adapted to be lifted to a certain height above their normal position.
  • the level said ridges are adapted to assume lies above the level, which the walking beams 7 and 8 can assume during their forward movement.
  • the ridges 11 and 12 have been lifted to their highest level, they thereby lift the charges supported thereon, so that the walking beams do not reach up to and cannot catch the charges, which thereby remain lying on the ridges 11 and 12 and are not advanced in the furnace.
  • the ridges 11 and 12, i.e., the hearth between the walking beams is formed so as to be liftable along the entire lengths of the furnace or along a part thereof, according to the effect desired.
  • the hearth is lifted by means of a mechanism 14, which may include hydraulic pistons, beams or wheels against which the hearth rests.
  • the operation of the liftable and lowerable hearth preferably is so controlled that the hearth is lifted immediately prior to or simultaneously with the lifting of the walking beams, and that the hearth is lowered as soon as the walking beams have been lowered.
  • the charge 9 at the stay-time in a certain position in the furnace normally will abut the entire hearth and thereby be held straight. If the charge would rest only on the lifted ridges 11 and 12, this would involve the risk that the ends of the charge would be curved. It is to be observed, therefore, that the liftable and lowerable hearth is not a walking beam, but only performs an upward and downward movement without moving the charges forward in the furnace.
  • the liftable and lowerable hearth can be caused to perform a certain number of lifting and lowering movements, so that the walking beams at their feeding movements actuate only those charges, which are not affected by the liftable and lowerable hearth, i.e., those charges which are located before or behind the liftable and lowerable hearth portion.
  • the hearth such as to be liftable and lowerable along the entire hearth length, but this is generally not required, as it is particularly desired that the hearth in the preheating zone can be lifted between the walking beams and the charges here are given a longer stay-time.
  • a walking beam furnace which comprises an elongated oven hearth

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)
US00202814A 1970-11-30 1971-11-29 Walking beam furnace Expired - Lifetime US3792965A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1617970 1970-11-30

Publications (1)

Publication Number Publication Date
US3792965A true US3792965A (en) 1974-02-19

Family

ID=20301837

Family Applications (1)

Application Number Title Priority Date Filing Date
US00202814A Expired - Lifetime US3792965A (en) 1970-11-30 1971-11-29 Walking beam furnace

Country Status (5)

Country Link
US (1) US3792965A (de)
DE (1) DE2159109A1 (de)
ES (1) ES397534A1 (de)
FR (1) FR2116136A5 (de)
GB (1) GB1314670A (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009774A (en) * 1972-11-07 1977-03-01 Lutz David E Conveyor
US4116619A (en) * 1977-05-26 1978-09-26 Btu Engineering Corporation Multiple beam furnace
EP0007464A1 (de) * 1978-07-15 1980-02-06 Smit Ovens Nijmegen B.V. Hubplattenofen
US4212633A (en) * 1978-11-16 1980-07-15 Abar Corporation Vacuum electric furnace
US4217095A (en) * 1977-05-23 1980-08-12 Tetsuya Tokitsu Reheating furnace for use in a hot rolling line
US4585411A (en) * 1983-07-06 1986-04-29 Italimpianti Societa Italiana Impianti P.A. Method and walking beam furnace for the intermediate heating of pipes in hot rolling mills
US4828489A (en) * 1986-12-30 1989-05-09 Francesco Albonetti High speed firing method and kiln, in particular for ceramic materials such as tiles and the like
DE3843002A1 (de) * 1988-12-08 1990-06-13 Didier Eng Verfahren und waermofen zum waermen von knueppeln, bloecken, brammen, blechen und dergleichen waermgut
US4975048A (en) * 1988-08-16 1990-12-04 Sharp Kabushiki Kaisha Heating apparatus
EP0412421A2 (de) * 1989-08-08 1991-02-13 Pacesetter AB Selbsttätig oszillierender Sender
US5139418A (en) * 1990-03-13 1992-08-18 Stein Heurtey Device for discharging and transferring steelworks products
DE4411216A1 (de) * 1994-03-31 1995-10-05 Loi Ind Ofenanlagen Hubherdofen
CN101586917B (zh) * 2008-05-21 2012-07-04 通化钢铁股份有限公司 一种加热炉的冷却水梁
US20130157210A1 (en) * 2009-10-20 2013-06-20 Tubos De Acero De Mexico, S.A. Device and method for transversely moving tubular material inside a furnace

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3633374A1 (de) * 1986-10-01 1988-04-14 Ruhrgas Ag Gleichschrittofen fuer die waermebehandlung von blechen
IT1227500B (it) * 1988-11-25 1991-04-12 Heurtey Italiana Spa Forno di riscaldo, mantenimento ed accumulo di prodotti siderurgici.
IT1248166B (it) * 1991-05-21 1995-01-05 Danieli Off Mecc Forno a longheroni refrattari con caricamento centrale per riscaldo edaccumulo di prodotti caldi.

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1761199A (en) * 1926-09-18 1930-06-03 Libbey Owens Glass Co Sheet-glass-handling apparatus
US2875995A (en) * 1956-01-17 1959-03-03 Ferguson Equipment Corp Heat treating furnace
FR1206789A (fr) * 1958-05-16 1960-02-11 Stein & Roubaix Perfectionnements aux fours à soles
US3373980A (en) * 1966-02-28 1968-03-19 Tabougnar Ab Walking beam furnace for effecting different feed speeds of the charge
US3450394A (en) * 1967-01-30 1969-06-17 Salem Brosius Canada Ltd Walking beam furnace
US3480264A (en) * 1967-01-31 1969-11-25 Koppers Wistra Ofenbau Gmbh Metallurgical walking beam furnace
US3544094A (en) * 1967-04-15 1970-12-01 Koppers Wistra Ofenbau Gmbh Metallurgical walking beam furnace
US3554505A (en) * 1967-12-20 1971-01-12 Heurtey Sa Walking beam furnaces
US3565241A (en) * 1968-10-07 1971-02-23 Clark Automation Inc Walking beam transfer apparatus
US3567198A (en) * 1969-11-14 1971-03-02 Granco Equipment Retriever means for walking beam furnace
US3662876A (en) * 1969-09-12 1972-05-16 Newall Eng Conveyor systems

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1761199A (en) * 1926-09-18 1930-06-03 Libbey Owens Glass Co Sheet-glass-handling apparatus
US2875995A (en) * 1956-01-17 1959-03-03 Ferguson Equipment Corp Heat treating furnace
FR1206789A (fr) * 1958-05-16 1960-02-11 Stein & Roubaix Perfectionnements aux fours à soles
US3373980A (en) * 1966-02-28 1968-03-19 Tabougnar Ab Walking beam furnace for effecting different feed speeds of the charge
US3450394A (en) * 1967-01-30 1969-06-17 Salem Brosius Canada Ltd Walking beam furnace
US3480264A (en) * 1967-01-31 1969-11-25 Koppers Wistra Ofenbau Gmbh Metallurgical walking beam furnace
US3544094A (en) * 1967-04-15 1970-12-01 Koppers Wistra Ofenbau Gmbh Metallurgical walking beam furnace
US3554505A (en) * 1967-12-20 1971-01-12 Heurtey Sa Walking beam furnaces
US3565241A (en) * 1968-10-07 1971-02-23 Clark Automation Inc Walking beam transfer apparatus
US3662876A (en) * 1969-09-12 1972-05-16 Newall Eng Conveyor systems
US3567198A (en) * 1969-11-14 1971-03-02 Granco Equipment Retriever means for walking beam furnace

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009774A (en) * 1972-11-07 1977-03-01 Lutz David E Conveyor
US4217095A (en) * 1977-05-23 1980-08-12 Tetsuya Tokitsu Reheating furnace for use in a hot rolling line
US4116619A (en) * 1977-05-26 1978-09-26 Btu Engineering Corporation Multiple beam furnace
EP0007464A1 (de) * 1978-07-15 1980-02-06 Smit Ovens Nijmegen B.V. Hubplattenofen
US4212633A (en) * 1978-11-16 1980-07-15 Abar Corporation Vacuum electric furnace
US4585411A (en) * 1983-07-06 1986-04-29 Italimpianti Societa Italiana Impianti P.A. Method and walking beam furnace for the intermediate heating of pipes in hot rolling mills
US4828489A (en) * 1986-12-30 1989-05-09 Francesco Albonetti High speed firing method and kiln, in particular for ceramic materials such as tiles and the like
US4975048A (en) * 1988-08-16 1990-12-04 Sharp Kabushiki Kaisha Heating apparatus
DE3843002A1 (de) * 1988-12-08 1990-06-13 Didier Eng Verfahren und waermofen zum waermen von knueppeln, bloecken, brammen, blechen und dergleichen waermgut
EP0412421A2 (de) * 1989-08-08 1991-02-13 Pacesetter AB Selbsttätig oszillierender Sender
EP0412421A3 (en) * 1989-08-08 1991-09-11 Siemens Elema Ab Self-oscillating transmitter
US5139418A (en) * 1990-03-13 1992-08-18 Stein Heurtey Device for discharging and transferring steelworks products
DE4411216A1 (de) * 1994-03-31 1995-10-05 Loi Ind Ofenanlagen Hubherdofen
DE4411216B4 (de) * 1994-03-31 2005-03-24 Loi Thermprocess Gmbh Hubherdofen
CN101586917B (zh) * 2008-05-21 2012-07-04 通化钢铁股份有限公司 一种加热炉的冷却水梁
US20130157210A1 (en) * 2009-10-20 2013-06-20 Tubos De Acero De Mexico, S.A. Device and method for transversely moving tubular material inside a furnace
US9127887B2 (en) * 2009-10-20 2015-09-08 Tubos De Acero De Mexico, S.A. Device and method for transversely moving tubular material inside a furnace

Also Published As

Publication number Publication date
DE2159109A1 (de) 1972-05-31
GB1314670A (en) 1973-04-26
ES397534A1 (es) 1975-03-16
FR2116136A5 (de) 1972-07-07

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