EP0240052B1 - Method to preheat billets with a saving of energy - Google Patents

Method to preheat billets with a saving of energy Download PDF

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Publication number
EP0240052B1
EP0240052B1 EP87200435A EP87200435A EP0240052B1 EP 0240052 B1 EP0240052 B1 EP 0240052B1 EP 87200435 A EP87200435 A EP 87200435A EP 87200435 A EP87200435 A EP 87200435A EP 0240052 B1 EP0240052 B1 EP 0240052B1
Authority
EP
European Patent Office
Prior art keywords
heating furnace
rolling
furnace
continuous casting
heating
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
EP87200435A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0240052A1 (en
Inventor
Geremia Nonini
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.)
Danieli and C Officine Meccaniche SpA
Original Assignee
Danieli and C Officine Meccaniche 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.)
Filing date
Publication date
Application filed by Danieli and C Officine Meccaniche SpA filed Critical Danieli and C Officine Meccaniche SpA
Priority to AT87200435T priority Critical patent/ATE64758T1/de
Publication of EP0240052A1 publication Critical patent/EP0240052A1/en
Application granted granted Critical
Publication of EP0240052B1 publication Critical patent/EP0240052B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/466—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling

Definitions

  • This invention concerns a method to preheat and heat billets, blooms or slabs so as to optimise their temperature for a successive rolling operation.
  • the invention provides for the overall form of the method to lead to a saving of energy by a reduction of energy consumption.
  • the invention is applied correctly in cooperation with a continuous casting plant.
  • the known art envisages that billets, blooms and slabs coming from a continuous casting plant are heated before passing on to the rolling cycle.
  • the known art visualises that the cold charges forming a buffer stock are heated before moving to the rolling cycle.
  • the known art envisages also that during stoppages of rolling for any reason the material leaving the continuous casting is parked so as to become a cold charge.
  • JP-A-57 202907 discloses that billets and blooms are occasionally switched momentarily from the normal path which they follow before reaching the pre-heating furnace, and are deposited in an auxiliary heating furnace.
  • US-A-4,311,454 provides for a traditional system to transfer blooms and billets, the system being improved by an additional movement imparted to the blooms and billets so as to make them pass from a pre-heating furnace to a heating furnace with a change in their axis of feed.
  • DE-A-3.310.867 discloses a multiple furnace to heat billets.
  • JP-A-5 820301 provides a multiple furnace to heat billets.
  • JP-A-58 204128 provides a unit consisting of a heating furnace and pre-heating furnace positioned in parallel.
  • JP-A-59 190327 also provides a unit consisting of a heating furnace and a pre-heating furnace, separate from each other but positioned in working sequence.
  • the material to be rolled can come from a cold charge store or buffer store and be parked temporarily to await re-approval or maintenance of the rolling plant or can pass continuously through directly from the continuous casting.
  • a preheating and holding furnace and a heating furnace are provided. These two furnaces are positioned in series and connected at position 16 and cooperate with each other in enabling the material to pass through correctly.
  • the material forming a cold charge 15 and coming from a cold charge store 10 enters a preheating furnace 12 and passes on to a heating furnace 13 and then to a rolling line.
  • Material 17 consisting of product arriving from continuous casting 11 and retained in a holding phase, since the rolling plant 14 is being maintained or having the rolling groove changed, is parked provisionally in the preheating furnace 12 before being moved to the heating furnace 13 and then to the rolling process 14.
  • the invention therefore provides for the material coming from continuous casting and waiting to pass to the temporarily halted rolling plant to be parked transiently in the preheating furnace 12.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)
  • Forging (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Commercial Cooking Devices (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP87200435A 1986-04-04 1987-03-10 Method to preheat billets with a saving of energy Expired - Lifetime EP0240052B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87200435T ATE64758T1 (de) 1986-04-04 1987-03-10 Verfahren zum vorwaermen von knueppeln mit energieeinsparung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT6034986U 1986-04-04
IT8660349U IT210788Z2 (it) 1986-04-04 1986-04-04 Procedimento di preriscaldo billette con recupero energetico.

Publications (2)

Publication Number Publication Date
EP0240052A1 EP0240052A1 (en) 1987-10-07
EP0240052B1 true EP0240052B1 (en) 1991-06-26

Family

ID=11290412

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87200435A Expired - Lifetime EP0240052B1 (en) 1986-04-04 1987-03-10 Method to preheat billets with a saving of energy

Country Status (5)

Country Link
EP (1) EP0240052B1 (it)
AT (1) ATE64758T1 (it)
DE (1) DE3770968D1 (it)
ES (1) ES2023181B3 (it)
IT (1) IT210788Z2 (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69216440T3 (de) * 1991-02-19 2000-11-16 Danieli Off Mecc Tunnelsystem zum Verbinden eines Warmbandwalzwerkes mit einer Stranggussanlage für dünne Platten
BE1004663A3 (nl) * 1991-03-05 1993-01-05 Bekaert Sa Nv Meerdraadsbehandelingsinstallatie.
DE102018213108A1 (de) 2018-08-06 2020-02-06 E.G.O. Elektro-Gerätebau GmbH Wäschetrockner und Verfahren zum Trocknen von Wäsche mit einem Wäschetrockner

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS552753A (en) * 1978-06-21 1980-01-10 Ito Seisakusho:Kk Method and apparatus for soaking treatment for cold billet and hot billet
DE3310867A1 (de) * 1983-03-25 1984-10-04 Mannesmann AG, 4000 Düsseldorf Giesswalzanlage zum walzen von stranggiessmaterial

Also Published As

Publication number Publication date
ATE64758T1 (de) 1991-07-15
IT8660349V0 (it) 1986-04-04
EP0240052A1 (en) 1987-10-07
ES2023181B3 (es) 1992-01-01
IT210788Z2 (it) 1989-01-11
DE3770968D1 (de) 1991-08-01

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