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EP0785287A3 - Gas furnace for continuous heating of metal bars - Google Patents

Gas furnace for continuous heating of metal bars Download PDF

Info

Publication number
EP0785287A3
EP0785287A3 EP96830580A EP96830580A EP0785287A3 EP 0785287 A3 EP0785287 A3 EP 0785287A3 EP 96830580 A EP96830580 A EP 96830580A EP 96830580 A EP96830580 A EP 96830580A EP 0785287 A3 EP0785287 A3 EP 0785287A3
Authority
EP
European Patent Office
Prior art keywords
metal bars
gas furnace
continuous heating
operatively associated
longitudinal
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.)
Granted
Application number
EP96830580A
Other languages
German (de)
French (fr)
Other versions
EP0785287A2 (en
EP0785287B1 (en
Inventor
Renato Barbero
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.)
Siem Di Barbero & C Sas
Original Assignee
Siem Di Barbero & C Sas
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 Siem Di Barbero & C Sas filed Critical Siem Di Barbero & C Sas
Publication of EP0785287A2 publication Critical patent/EP0785287A2/en
Publication of EP0785287A3 publication Critical patent/EP0785287A3/en
Application granted granted Critical
Publication of EP0785287B1 publication Critical patent/EP0785287B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B9/36—Arrangements of heating devices
    • 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
    • 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
    • C21D9/0056—Furnaces through which the charge is moved in a horizontal straight path
    • 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
    • F27B9/24—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 being carried by a conveyor
    • F27B9/2407—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 being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
    • 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
    • C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
    • 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 specially adapted for 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
    • F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B9/36—Arrangements of heating devices
    • F27B2009/3607—Heaters located above the track of the charge
    • 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
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D2099/0085—Accessories
    • F27D2099/0093—Means to collect ashes or dust, e.g. vessels

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)
  • Tunnel Furnaces (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)

Abstract

A gas furnace (1) for continuous heating of metal bars (B), having a longitudinal heating tunnel (3) whose sole (5) is formed with longitudinal bottom apertures (7) for scale discharge, to which movable closure doors (10) are operatively associated. The bottom apertures (7) are downwardly tapered and the respective closure doors (10) may be motor-driven. The ceiling (6) of the heating tunnel (3) is upwardly tapered and communicates superiorly with lo-ngitudinal top openings (17) to which tiltable closure lids (18) are operatively associated. Gas burner lateral seats (23) are arranged along two superimposed and offset rows. <IMAGE>
EP96830580A 1995-12-27 1996-11-13 Gas furnace for continuous heating of metal bars Expired - Lifetime EP0785287B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT95TO001049A IT1281108B1 (en) 1995-12-27 1995-12-27 GAS OVEN FOR THE CONTINUOUS HEATING OF METAL BARS
ITTO951049 1995-12-27

Publications (3)

Publication Number Publication Date
EP0785287A2 EP0785287A2 (en) 1997-07-23
EP0785287A3 true EP0785287A3 (en) 1997-10-29
EP0785287B1 EP0785287B1 (en) 1999-05-06

Family

ID=11414066

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96830580A Expired - Lifetime EP0785287B1 (en) 1995-12-27 1996-11-13 Gas furnace for continuous heating of metal bars

Country Status (4)

Country Link
EP (1) EP0785287B1 (en)
AT (1) ATE179760T1 (en)
DE (1) DE69602346T2 (en)
IT (1) IT1281108B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20060074A1 (en) * 2006-02-03 2007-08-04 Olivotto Ferre S P A GAS OVEN FOR CONTINUOUS HEATING OF METALLIC BARS
CN104046755A (en) * 2014-06-23 2014-09-17 江苏华烨炉业有限公司 Natural gas tunnel heating furnace

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668040A (en) * 1950-01-26 1954-02-02 Selas Corp Of America Furnace system
DE1931909A1 (en) * 1968-06-26 1970-01-08 Ass Elect Ind Device for heating metal bodies
DE1807504A1 (en) * 1968-11-07 1970-05-27 Elhaus Dipl Ing F W Continuous heating furnace for metal blocks, rods or the like.
FR2385061A1 (en) * 1977-03-25 1978-10-20 Koppers Wistra Ofenbau Gmbh OVEN WITH ROLLER SOLE
US4289944A (en) * 1977-12-19 1981-09-15 Reese Thurston F Apparatus for reheating, storing and conveying cast bars
WO1983002661A1 (en) * 1982-02-02 1983-08-04 Friedrich Wilhelm Elhaus Furnace for preheating elongate materials
JPH06103154B2 (en) * 1987-01-30 1994-12-14 大同特殊鋼株式会社 Maintenance equipment for Roller Hearth furnace
EP0767353A1 (en) * 1995-09-13 1997-04-09 DANIELI &amp; C. OFFICINE MECCANICHE S.p.A. Method to equalise the temperature in a heating furnace with a controlled-oxidisation ambient and heating furnace carrying out the method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668040A (en) * 1950-01-26 1954-02-02 Selas Corp Of America Furnace system
DE1931909A1 (en) * 1968-06-26 1970-01-08 Ass Elect Ind Device for heating metal bodies
DE1807504A1 (en) * 1968-11-07 1970-05-27 Elhaus Dipl Ing F W Continuous heating furnace for metal blocks, rods or the like.
FR2385061A1 (en) * 1977-03-25 1978-10-20 Koppers Wistra Ofenbau Gmbh OVEN WITH ROLLER SOLE
US4289944A (en) * 1977-12-19 1981-09-15 Reese Thurston F Apparatus for reheating, storing and conveying cast bars
WO1983002661A1 (en) * 1982-02-02 1983-08-04 Friedrich Wilhelm Elhaus Furnace for preheating elongate materials
JPH06103154B2 (en) * 1987-01-30 1994-12-14 大同特殊鋼株式会社 Maintenance equipment for Roller Hearth furnace
EP0767353A1 (en) * 1995-09-13 1997-04-09 DANIELI &amp; C. OFFICINE MECCANICHE S.p.A. Method to equalise the temperature in a heating furnace with a controlled-oxidisation ambient and heating furnace carrying out the method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 9503, Derwent World Patents Index; Class J09, AN 95-020004, XP002039506 *

Also Published As

Publication number Publication date
ITTO951049A1 (en) 1997-06-27
ATE179760T1 (en) 1999-05-15
DE69602346D1 (en) 1999-06-10
IT1281108B1 (en) 1998-02-11
EP0785287A2 (en) 1997-07-23
ITTO951049A0 (en) 1995-12-27
EP0785287B1 (en) 1999-05-06
DE69602346T2 (en) 1999-11-04

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