GB1323579A - Method of heating ingots in particular elongated ingots such as slabs billets or the like in continuous furnaces in particular in pusher-type furnaces - Google Patents

Method of heating ingots in particular elongated ingots such as slabs billets or the like in continuous furnaces in particular in pusher-type furnaces

Info

Publication number
GB1323579A
GB1323579A GB5490270A GB5490270A GB1323579A GB 1323579 A GB1323579 A GB 1323579A GB 5490270 A GB5490270 A GB 5490270A GB 5490270 A GB5490270 A GB 5490270A GB 1323579 A GB1323579 A GB 1323579A
Authority
GB
United Kingdom
Prior art keywords
heating
surface temperature
slabs
billets
soaking zone
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
GB5490270A
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.)
IMPIANTI SpA SOC IT
Original Assignee
IMPIANTI SpA SOC IT
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 IMPIANTI SpA SOC IT filed Critical IMPIANTI SpA SOC IT
Publication of GB1323579A publication Critical patent/GB1323579A/en
Expired legal-status Critical Current

Links

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
    • F27B9/22—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 tunnel furnace on rails, e.g. under the action of scrapers or pushers
    • 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
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B2009/305—Particular conformation of the furnace
    • F27B2009/3055—Non-uniform section through the length of the furnace
    • 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
    • F27B9/22—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 tunnel furnace on rails, e.g. under the action of scrapers or pushers
    • F27B9/222—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 on rails, e.g. under the action of scrapers or pushers the path comprising a section specially adapted for effecting equalisation of the temperature of the charge

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Tunnel Furnaces (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

1323579 Heating billets and slabs SOC ITALIANA IMPIANTI SpA 18 Nov 1970 [18 Nov 1969] 54902/70 Heading F4B The upper-and undersides O and U respectively of slabs or billets M travelling on cooled slide rails 5 through the heating zone A of a pusher furnace 1, are differentially heated by radiant roof and under-floor burners 7, 8 respectively, so that in an initial section of a subsequent soaking zone B baving a ceramic hearth 4 and heated only by burners 7, the surface temperature of the underside U is lower and that of the upper side O is higher than the required ejection temperature, whereby a thermal flow from the upper to the underside is induced in the soaking zone. Preferably at the end of the heating zone A the underside surface temperature is close to but slightly higher than the ejection temperature, though lower than the upperside surface temperature, the underside surface temperature being lowered to below the ejection temperature in the initial section of soaking zone B by heat absorbtion by the ceramic hearth 4. In the initial section of the soaking zone B the upperside to surface temperature is first raised to and then maintained at a higher level, whilst in a final section of tha soaking zone the heating of the upperside O is reduced or stopped.
GB5490270A 1969-11-18 1970-11-18 Method of heating ingots in particular elongated ingots such as slabs billets or the like in continuous furnaces in particular in pusher-type furnaces Expired GB1323579A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT745469 1969-11-18

Publications (1)

Publication Number Publication Date
GB1323579A true GB1323579A (en) 1973-07-18

Family

ID=11125082

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5490270A Expired GB1323579A (en) 1969-11-18 1970-11-18 Method of heating ingots in particular elongated ingots such as slabs billets or the like in continuous furnaces in particular in pusher-type furnaces

Country Status (8)

Country Link
US (1) US3677531A (en)
BE (1) BE759018A (en)
CA (1) CA930945A (en)
DE (1) DE2054606A1 (en)
FR (1) FR2069483A5 (en)
GB (1) GB1323579A (en)
LU (1) LU62060A1 (en)
NL (1) NL166501B (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2867431A (en) * 1955-07-01 1959-01-06 Selas Corp Of America Metal heating
US3342468A (en) * 1964-06-30 1967-09-19 United States Steel Corp Apparatus for removing cold skid marks from objects
GB1195374A (en) * 1966-12-02 1970-06-17 British Iron Steel Research Continuous Re-Heating Furnace
US3416777A (en) * 1967-08-02 1968-12-17 Morgan Construction Co Zoned reheat furnace
US3540706A (en) * 1969-02-19 1970-11-17 Salem Brosius Inc Heating furnace with skid rails

Also Published As

Publication number Publication date
DE2054606A1 (en) 1971-05-27
NL166501B (en) 1981-03-16
FR2069483A5 (en) 1971-09-03
US3677531A (en) 1972-07-18
CA930945A (en) 1973-07-31
BE759018A (en) 1971-04-30
LU62060A1 (en) 1971-05-11
NL7016913A (en) 1971-05-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee