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 peculiar to 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 tunnel furnace
    • 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 tunnel furnace 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 tunnel furnace 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 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
    • F27B9/30—Details, accessories, or equipment peculiar to 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
ITTO951049 1995-12-27
IT95TO001049A IT1281108B1 (en) 1995-12-27 1995-12-27 GAS OVEN FOR THE CONTINUOUS HEATING OF METAL BARS

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

Similar Documents

Publication Publication Date Title
GEP19970772B (en) Electric Arc Melting Furnace
DE3775443D1 (en) METHOD AND DEVICE FOR MELTING METAL.
DE3271809D1 (en) Continuously charged electric-arc furnace for melting scrap
EP0570670A3 (en) Cooking top
EP0562508A3 (en) Protein with bone formation ability and process for its production
ZA926932B (en) Direct current furnace with a hearth electrode, hearth electrode and electrode block, and method of operation for said furnace.
EP0785287A3 (en) Gas furnace for continuous heating of metal bars
EP0244189A3 (en) Human pancreatic elastase i
DE3880940T2 (en)
ATE161292T1 (en) STEEL FACTORY EQUIPMENT WITH A CLOSED TILTING ARC FURNACE
EP0646757A4 (en) Dc arc furnace.
TW345610B (en) Process for minimizing the NOx-content in flue gases
DE68922809T2 (en) Glass melting furnace and operating method therefor.
DE58908460D1 (en) OVEN PLANT FOR MELTING SCRAP.
AU4191097A (en) Device to support and swing the hearth in an electric furnace
TW276297B (en)
ATE216433T1 (en) DOUBLE STOVE ELECTRIC ARC FURNACE FOR CONTINUOUS MELTING
WO1997005438A3 (en) Arc furnace in particular d.c. arc furnace, and process for preventing overheating of the furnace wall
KR850007805A (en) Steelmaking Method and Steelmaking System Using Upper Blowing Converter
Hovis Low NO sub x Burners for Metallurgical Furnaces
UA12672A (en) Method for refining of steel
GR3007540T3 (en)
ES2152609T3 (en) LOWER HOOD FOR THE CAS-OB PROCEDURE.
JPS6473012A (en) Refining method by using top and bottom blowing refining furnace
UA19994C2 (en) Regenerative pit furnace

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT DE ES FR GB NL PT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT DE ES FR GB NL PT SE

17P Request for examination filed

Effective date: 19980311

17Q First examination report despatched

Effective date: 19980520

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE ES FR GB NL PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19990506

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19990506

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19990506

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19990506

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19990506

REF Corresponds to:

Ref document number: 179760

Country of ref document: AT

Date of ref document: 19990515

Kind code of ref document: T

REF Corresponds to:

Ref document number: 69602346

Country of ref document: DE

Date of ref document: 19990610

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19990806

EN Fr: translation not filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001113

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20001113

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20081107

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100601