EP0062697A2 - Procédé et four à longerons mobiles pour le réchauffage de produits sidérurgiques - Google Patents

Procédé et four à longerons mobiles pour le réchauffage de produits sidérurgiques Download PDF

Info

Publication number: EP0062697A2
Authority: EP; European Patent Office
Prior art keywords: furnace; products; conveyor; oven; walking beam
Prior art date: 1981-03-31
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

EP81108909A

Other languages

German (de)

English (en)

Other versions

EP0062697B1 (fr

EP0062697A3 (en

Inventor

Iacopo Dr. Ing. Martini

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.)

Italimpianti SpA

Original Assignee

Italimpianti SpA

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.)

1981-03-31

Filing date

1981-10-26

Publication date

1982-10-20

1981-10-26 Application filed by Italimpianti SpA filed Critical Italimpianti SpA

1981-10-26 Priority to AT81108909T priority Critical patent/ATE22171T1/de

1982-10-20 Publication of EP0062697A2 publication Critical patent/EP0062697A2/fr

1983-08-03 Publication of EP0062697A3 publication Critical patent/EP0062697A3/de

1986-09-10 Application granted granted Critical

1986-09-10 Publication of EP0062697B1 publication Critical patent/EP0062697B1/fr

Status Expired legal-status Critical Current

Links

238000010438 heat treatment Methods 0.000 title claims description 16
238000000034 method Methods 0.000 title claims description 12
238000009851 ferrous metallurgy Methods 0.000 title 1
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
229910000831 Steel Inorganic materials 0.000 claims abstract description 9
229910052742 iron Inorganic materials 0.000 claims abstract description 9
239000010959 steel Substances 0.000 claims abstract description 9
238000001816 cooling Methods 0.000 claims description 5
230000001360 synchronised effect Effects 0.000 claims description 4
239000007789 gas Substances 0.000 claims description 3
238000003780 insertion Methods 0.000 claims description 3
230000037431 insertion Effects 0.000 claims description 3
238000011144 upstream manufacturing Methods 0.000 claims description 3
238000003303 reheating Methods 0.000 claims description 2
238000005096 rolling process Methods 0.000 description 6
238000009749 continuous casting Methods 0.000 description 5
238000009529 body temperature measurement Methods 0.000 description 2
238000013459 approach Methods 0.000 description 1
238000010276 construction Methods 0.000 description 1
238000013461 design Methods 0.000 description 1
230000002349 favourable effect Effects 0.000 description 1
238000012546 transfer Methods 0.000 description 1
238000010792 warming Methods 0.000 description 1

Images

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
- F27B9/201—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 walking beam furnace
- F27B9/202—Conveyor mechanisms therefor
- F27B9/207—Conveyor mechanisms therefor consisting of two or more conveyors

Definitions

the improvement in the quality of the products obtained by the continuous casting process makes it possible in many cases to refrain from checking these products.
This control requires the products to be cooled to temperatures that approach room temperature.
This simplification also offers the possibility, which is very favorable from the point of view of energy saving, to include the heating and compensation furnaces still warm products to be fed directly from the continuous caster.
the products which enter the known furnaces at a temperature which differs significantly from the average temperature therefore leave the furnace at a temperature which is lower than the temperature required for the rolling process, or are heated to an unacceptably high degree and begin to melt.
the operation of the rolling mill provided in connection with the walking beam heating furnace has to be adapted to the operation of the continuous casting plant in such a way that the hot products reach the furnace without stays of varying duration and, consequently, without different cooling.
the present invention has the task of eliminating the disadvantages listed above and a method for Developing heating of iron and steel products in walking beam furnaces, which makes it possible to load the furnace with successive products, such as billets, slabs, blocks or the like, which have different temperatures and / or different cross sections, in particular different thicknesses, and / or have different qualities, but at the outlet of the furnace the heated products have a substantially uniform temperature suitable for the rolling process.
the method according to the invention is therefore intended to enable an elastic connection between the rolling mill arranged downstream of the walking beam furnace and the system upstream of the furnace.
at least some of the products fed inside the furnace are carried out laterally out of the furnace in correspondingly variable locations and then outside the furnace in its longitudinal direction and in the same feed direction the products are advanced further inside the furnace.
the walking beam furnace can be designed in various ways with a conveyor which is assigned according to the invention and which is external to the furnace and is synchronized.
the outer conveyor which is assigned to a plurality of successive, lateral furnace openings, can be provided only on the furnace inlet side or only on the furnace outlet side or both on the furnace inlet side and on the furnace outlet side.
the successive lateral oven inlet or oven outlet openings can be designed in such a way that they only allow one product to pass through at a time, or they can have a width such that each of them is the inlet into the oven and / or the outlet allows the oven of one product each in several different positions, offset in the longitudinal direction of the oven.
even a single, lateral furnace inlet opening and / or a single lateral furnace outlet opening can be provided, which extends over the entire slopes of the assigned outer conveyor.
the furnace-outer conveyor consists of a step-type conveyor, in particular a walking beam conveyor, which is designed similarly to the inside walking beam conveyor.
the insertion means for introducing the products from the lateral outer conveyor into the oven and / or the ejection means for pushing the products out of the oven onto the lateral outer conveyor can consist of at least one axial loading button.
any means for heating the products transported on the aforesaid external conveyor can be provided in the area of the external, lateral, on the oven inlet side and / or on the oven outlet side, to e.g. to prevent or restrict the cooling of these products and / or to achieve real preheating or reheating of the products.
the fixed beams and with 3 the walking beams of the walking beam conveyor arranged inside the furnace 1 are designated.
the direction of the incremental transverse axial advancement of the billets in the furnace 1 by the lifting conveyor 2, 3 is indicated by the arrow 4.
a transverse roller table 5 is provided in the interior of the furnace, the rollers of which are driven by assigned motors 105.
the billets are axially pushed out of the furnace in the direction of arrow 8 through a lateral outlet opening 7.
the wall of the furnace chamber opposite the lateral furnace outlet opening 7 has a plurality of furnace inlet openings 11, 12, 13, 14 which are successive in the longitudinal direction of the furnace and are dimensioned such that a single billet at a time axially through each furnace inlet opening can be introduced into the furnace 1.
the lateral oven inlet openings are consecutive in the longitudinal direction of the oven, i.e. arranged in the feed direction 4 of the billet inside the furnace.
an outer walking beam conveyor 9, 10 is provided, which extends parallel to the inner walking beam conveyor 2, 3 over part of the furnace length.
the feed direction 15 of the outer walking beam conveyor 9, 10 corresponds to the feeding direction 4 of the inner walking beam conveyor 2, 3.
the oven-external conveyor 9, 10 is assigned to a transverse loading roller table 16 with motor-driven rollers, which is arranged in alignment with the first oven inlet opening 11 and the subsequent inlet roller table 5 lying inside the oven 1.
the furnace outer walking beam conveyor 9, 10 is arranged in a chamber 17, which can also be thermally insulated.
the billets supplied in the continuous casting plant are fed in the direction of the arrow 18 and are aligned with their longitudinal axis in this direction of the arrow, and they run into the feed roller table 16 through a side loading opening 19 provided in the chamber 17.
the supplied billets are checked and classified based on their temperature.
the billets are introduced into the oven through the lateral furnace inlet opening 11, 12, 13, 14 which corresponds to a position on the heating curve corresponding to the temperature of each individual billet.
the colder billets are fed directly from the loading roller table 16 through the first oven inlet opening onto the subsequent inlet roller table 5 into the oven and then removed from this inlet roller table 5 through the walking beams 3 of the inside walking beam conveyor 2, 3 and gradually transversely axially conveyed in the feed direction 4 over the entire length of the furnace 1.
the coldest billets therefore remain in furnace 1 for the longest possible dwell time and consequently experience the greatest warming.
the invention can be used not only in the introduction of the iron and steel products to be heated into the walking beam furnace, but also in the execution of the heated products from the walking beam furnace.

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)
Meat, Egg Or Seafood Products (AREA)

EP81108909A 1981-03-31 1981-10-26 Procédé et four à longerons mobiles pour le réchauffage de produits sidérurgiques Expired EP0062697B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT81108909T ATE22171T1 (de)	1981-03-31	1981-10-26	Verfahren und hubbalkenofen zur erwaermung von eisenhuettenerzeugnissen.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
IT1248281		1981-03-31
IT12482/81A IT1145959B (it)	1981-03-31	1981-03-31	Metodo e forno a longheroni mobili per il riscaldo di prodotti siderurgici aventi diverse temperature d infornamento e o diverse sezioni trasversali

Publications (3)

Publication Number	Publication Date
EP0062697A2 true EP0062697A2 (fr)	1982-10-20
EP0062697A3 EP0062697A3 (en)	1983-08-03
EP0062697B1 EP0062697B1 (fr)	1986-09-10

Family

ID=11140687

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP81108909A Expired EP0062697B1 (fr)	1981-03-31	1981-10-26	Procédé et four à longerons mobiles pour le réchauffage de produits sidérurgiques

Country Status (6)

Country	Link
US (1)	US4420145A (fr)
EP (1)	EP0062697B1 (fr)
AT (1)	ATE22171T1 (fr)
BR (1)	BR8201706A (fr)
DE (1)	DE3175310D1 (fr)
IT (1)	IT1145959B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2659582A1 (fr) *	1990-03-13	1991-09-20	Stein Heurtey	Dispositif pour assurer le dechargement et le transfert de produits siderurgiques.

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4721836A (en) *	1986-05-14	1988-01-26	The United States Of America As Represented By The Secretary Of The Navy	Apparatus for transient annealing of semiconductor samples in a controlled ambient
IT1296715B1 (it) *	1997-11-11	1999-07-15	Danieli Off Mecc	Procedimento di controllo assialita' per bramme uscenti da colata continua e relativo dispositivo
IT202100000086A1 (it) *	2021-01-05	2022-07-05	Danieli Off Mecc	Apparato per il riscaldo di prodotti siderurgici

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE135237C (fr) *
US3854863A (en) *	1974-01-23	1974-12-17	H Lubold	Furnace assembly and method for heating workpieces
JPS5154813A (en) *	1974-11-08	1976-05-14	Chugai Ro Kogyo Kaisha Ltd	Marukohenkanetsuro
JPS552753A (en) *	1978-06-21	1980-01-10	Ito Seisakusho:Kk	Method and apparatus for soaking treatment for cold billet and hot billet

1981
- 1981-03-31 IT IT12482/81A patent/IT1145959B/it active
- 1981-10-26 DE DE8181108909T patent/DE3175310D1/de not_active Expired
- 1981-10-26 EP EP81108909A patent/EP0062697B1/fr not_active Expired
- 1981-10-26 AT AT81108909T patent/ATE22171T1/de not_active IP Right Cessation
1982
- 1982-03-01 US US06/353,094 patent/US4420145A/en not_active Expired - Fee Related
- 1982-03-25 BR BR8201706A patent/BR8201706A/pt not_active IP Right Cessation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2659582A1 (fr) *	1990-03-13	1991-09-20	Stein Heurtey	Dispositif pour assurer le dechargement et le transfert de produits siderurgiques.
EP0453329A3 (fr) *	1990-03-13	1991-11-13	STEIN HEURTEY, Société Anonyme:	Dispositif pour assurer le déchargement et le transfert de produits sidérurgiques
US5139418A (en) *	1990-03-13	1992-08-18	Stein Heurtey	Device for discharging and transferring steelworks products

Also Published As

Publication number	Publication date
ATE22171T1 (de)	1986-09-15
EP0062697B1 (fr)	1986-09-10
DE3175310D1 (en)	1986-10-16
IT1145959B (it)	1986-11-12
EP0062697A3 (en)	1983-08-03
US4420145A (en)	1983-12-13
BR8201706A (pt)	1983-02-22
IT8112482A0 (it)	1981-03-31

Legal Events

Date	Code	Title	Description
1982-08-20	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
1982-10-20	AK	Designated contracting states	Designated state(s): AT BE CH DE FR GB LU NL SE
1983-06-03	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1983-08-03	AK	Designated contracting states	Designated state(s): AT BE CH DE FR GB LI LU NL SE
1983-12-21	17P	Request for examination filed	Effective date: 19831012
1986-07-26	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1986-09-10	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): AT BE CH DE FR GB LI LU NL SE
1986-09-10	REF	Corresponds to:	Ref document number: 22171 Country of ref document: AT Date of ref document: 19860915 Kind code of ref document: T
1986-10-16	REF	Corresponds to:	Ref document number: 3175310 Country of ref document: DE Date of ref document: 19861016
1986-10-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LI Effective date: 19861031 Ref country code: CH Effective date: 19861031
1986-11-14	ET	Fr: translation filed
1987-06-30	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
1987-07-08	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1987-07-08	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1987-08-26	26N	No opposition filed
1991-09-11	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: LU Payment date: 19910911 Year of fee payment: 11
1991-09-12	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19910912 Year of fee payment: 11
1991-09-13	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: SE Payment date: 19910913 Year of fee payment: 11
1991-09-17	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19910917 Year of fee payment: 11
1991-09-27	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: BE Payment date: 19910927 Year of fee payment: 11
1991-10-08	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19911008 Year of fee payment: 11
1991-10-30	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: AT Payment date: 19911030 Year of fee payment: 11
1991-10-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: NL Payment date: 19911031 Year of fee payment: 11
1992-01-16	EPTA	Lu: last paid annual fee
1992-10-26	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19921026 Ref country code: GB Effective date: 19921026 Ref country code: AT Effective date: 19921026
1992-10-27	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Effective date: 19921027
1992-10-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: BE Effective date: 19921031
1993-04-30	BERE	Be: lapsed	Owner name: ITALIMPIANTI SOCIETA ITALIANA IMPIANTI P.A. Effective date: 19921031
1993-05-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Effective date: 19930501
1993-06-16	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee
1993-06-23	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19921026
1993-06-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Effective date: 19930630
1993-07-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Effective date: 19930701
1993-08-27	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
1995-01-31	EUG	Se: european patent has lapsed	Ref document number: 81108909.3 Effective date: 19930510

Publication	Publication Date	Title
DE60004223T2 (de)	2004-04-15	Integrierte anlage zur herstellung von walzgut
DD202616A5 (de)	1983-09-28	Waffelbackofen mit umlaufenden backzangen, insbesondere fuer waffelprodukte, wie z.b. flachwaffeln, niedere hohlwaffeln, zuckertueten, waffelbechern und waffelfiguren
DE2907960C3 (de)	1984-04-19	Verfahren und Vorrichtung zum kontinuierlichen Wärmebehandeln von vereinzeltem, langgestrecktem metallischen Gut
DE3422922C1 (de)	1985-06-20	Anlage mit einem Waermofen fuer auf Laenge geschnittene Strangstuecke einer Stranggiessanlage
EP1736556A2 (fr)	2006-12-27	Four pour chauffer des lingots d'aluminium
EP0313726B1 (fr)	1993-09-08	Procédé et four pour le chauffage de brames, billettes, lingots, tôles, bandes d'acier et de charges similaires
DE1807504A1 (de)	1970-05-27	Durchlauferwaermungsofen fuer Metallbloecke,-stangen od.dgl.
DE2163202C3 (de)	1974-12-12	Balken für Hubbalkenofen mit vertikal und/oder horizontal beweglichen Balken
EP0062697A2 (fr)	1982-10-20	Procédé et four à longerons mobiles pour le réchauffage de produits sidérurgiques
DE3708050C2 (fr)	1989-12-07
AT396559B (de)	1993-10-25	Brammen-stranggiessanlage mit nachgeordnetem walzwerk
EP0908244B1 (fr)	2003-05-02	Installation pour la fabrication d'un produit laminé à chaud
DE2846818C2 (de)	1986-10-09	Vorrichtung zum Aufheizen von kalten und/oder warmen Stahlblöcken
EP0908243B1 (fr)	2003-03-05	Procédé et installation pour la fabrication d'un produit laminé à chaud
EP2398603A1 (fr)	2011-12-28	Dispositif de préchauffage d'objets, en particulier de tubes, de barres ou de goujons en aluminium, ainsi qu'installation dotée d'un tel dispositif de préchauffage
DE3736674C1 (en)	1989-01-26	Method and furnace for heating slabs, ingots, billets, sheets and similar products
WO2011101231A1 (fr)	2011-08-25	Dispositif de transport pour brames, doté d'au moins deux machines de coulée et d'au moins trois éléments transbordeurs
DE69805474T2 (de)	2002-11-14	Anlage zur Behandlung von siderurgischen Produkten
DE102009053343B4 (de)	2012-08-30	Stoßofen, Ofenanlage und thermisches Behandlungsverfahren
AT390322B (de)	1990-04-25	Vorrichtung zum durchwaermen von stahlteilen
EP0630696B1 (fr)	1997-09-10	Procédé et dispositif pour le refroidissement soigné de barres d'acier spécial ou inoxydable laminées à chaud
DE688851C (de)	1940-03-04	Verfahren zum Betrieb von Durchlaufoefen grosser Laenge
DE69204102T2 (de)	1996-01-11	Hubbalkenofen mit zentraler Ladung zum Beheizen und Speichern von Warmgut.
DE3830027A1 (de)	1990-03-15	Ofenanlage zum waermen bzw. nachwaermen von bandfoermigem waermgut
DE3605726C1 (de)	1987-08-27	Durchlaufofen zum Waermen und anschliessenden Abkuehlen von Werkstuecken