EP0405092A1 - Procédé de recuit de tôles d'acier minces - Google Patents

Procédé de recuit de tôles d'acier minces Download PDF

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Publication number
EP0405092A1
EP0405092A1 EP90108170A EP90108170A EP0405092A1 EP 0405092 A1 EP0405092 A1 EP 0405092A1 EP 90108170 A EP90108170 A EP 90108170A EP 90108170 A EP90108170 A EP 90108170A EP 0405092 A1 EP0405092 A1 EP 0405092A1
Authority
EP
European Patent Office
Prior art keywords
hydrogen
annealing
coil
steel sheet
thin steel
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.)
Withdrawn
Application number
EP90108170A
Other languages
German (de)
English (en)
Inventor
Wilhelm Dipl.-Ing. Beckerling
Hans W. Dr.-Ing. Grasshoff
Ludwig Dipl.-Ing. Schütz
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.)
Krupp Hoesch Stahl AG
Original Assignee
Hoesch Stahl AG
Krupp Hoesch Stahl AG
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 Hoesch Stahl AG, Krupp Hoesch Stahl AG filed Critical Hoesch Stahl AG
Publication of EP0405092A1 publication Critical patent/EP0405092A1/fr
Withdrawn legal-status Critical Current

Links

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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/663—Bell-type furnaces
    • C21D9/667—Multi-station furnaces
    • C21D9/67—Multi-station furnaces adapted for treating the charge in vacuum or special atmosphere

Definitions

  • the invention relates to a method for annealing thin steel sheet wound into a coil in an oven with a protective atmosphere containing hydrogen.
  • the rolling of very thin sheet steel which is used particularly in the packaging industry, requires very good lubrication due to an oil or grease film adhering to the sheet. This lubricating film interferes when the sheet is recrystallized in the final phase of rolling.
  • the annealing is carried out in a known manner in an oven with a protective gas atmosphere. These ovens are usually designed as hoods that can be slipped over the coil.
  • the alkaline and electrolytic cleaning process can only be saved with thicker sheets that have a thickness of more than 0.5 mm. With thick sheets, such good lubrication is not necessary when rolling. An emulsion of water and easily evaporating fat or oil is therefore sufficient. The few fat or oil components adhering to the surface are evaporated when heated, so that the surface of the sheet is sufficiently clean or clean even without a special cleaning process.
  • the invention has for its object to describe a process for recrystallizing annealing of very thin steel sheet, in which the unwinding of the coil and the special cleaning of the sheet in the unwound state, in particular in the alkaline and electrolytic bath, is saved, the usual time of Glow should be kept approximately.
  • the furnace can be opened using conventional methods heating and cooling speeds are operated. The time is then sufficiently long so that with an increased hydrogen content in the protective gas atmosphere, the hydrogen reacts sufficiently with the few residues.
  • the cleaning effect of the process is better than when using conventional alkaline cleaning processes.
  • a particular advantage of the new process is that only flammable gases or vapors are produced which can easily be burned in combustion plants, whereas the alkaline cleaning process represents a much larger disposal problem.
  • HNX gas is a mixture of 6% hydrogen and over 90% nitrogen.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
EP90108170A 1989-06-29 1990-04-28 Procédé de recuit de tôles d'acier minces Withdrawn EP0405092A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893921321 DE3921321A1 (de) 1989-06-29 1989-06-29 Verfahren zum gluehen von duennem stahlblech
DE3921321 1989-06-29

Publications (1)

Publication Number Publication Date
EP0405092A1 true EP0405092A1 (fr) 1991-01-02

Family

ID=6383872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90108170A Withdrawn EP0405092A1 (fr) 1989-06-29 1990-04-28 Procédé de recuit de tôles d'acier minces

Country Status (2)

Country Link
EP (1) EP0405092A1 (fr)
DE (1) DE3921321A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994013843A1 (fr) * 1992-12-11 1994-06-23 Messer Griesheim Gmbh Procede de recuit sans formation de suie de feuillards d'acier dans un four a recuit
WO1999025882A1 (fr) * 1997-11-14 1999-05-27 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede ameliore pour le recuit de rouleaux d'acier carbone etire et de bobines a feuille d'acier carbone

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4428614C2 (de) * 1994-08-12 1999-07-01 Loi Thermprocess Gmbh Verfahren zum Glühen von Metallteilen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3233374A1 (de) * 1982-09-08 1984-03-08 Sumitomo Metal Industries, Ltd., Osaka Verfahren zur herstellung eines gereinigten kaltgewalzten stahlbandes
LU87398A1 (fr) * 1987-12-03 1989-06-14 Centre Rech Metallurgique Procede de conduite d'un traitement de recuit-base d'une bande d'acier

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE450186C (de) * 1925-12-13 1927-11-15 Theodor Stassinet Dipl Ing Verfahren und Vorrichtung zum Entfernen von Daempfen bzw. Dampfmischungen aus Gluehgefaessen beim Blankgluehen
DE617097C (de) * 1932-02-26 1935-08-12 Siemens Schuckertwerke Akt Ges Blankgluehofen
DE1032294B (de) * 1954-01-26 1958-06-19 Berkenhoff & Co Kommanditgesel Verfahren zum Blankgluehen von Eisen, Stahl, Metallen und Metallegierungen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3233374A1 (de) * 1982-09-08 1984-03-08 Sumitomo Metal Industries, Ltd., Osaka Verfahren zur herstellung eines gereinigten kaltgewalzten stahlbandes
LU87398A1 (fr) * 1987-12-03 1989-06-14 Centre Rech Metallurgique Procede de conduite d'un traitement de recuit-base d'une bande d'acier

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CAHIERS D'INF. TECHN. DE LA REVUE DE METALL., Band 86, Nr. 2, Februar 1989, Seiten 173-180; B. CHATELAIN et al.: "Evaluation du recuit sous hydrogene des aciers doux. Réactions gaz-métal" *
IRON AND STEEL ENGINEER, Band 65, Nr. 8, August 1988, Seiten 43-49; D. POWELL: "High performance hydrogen annealing technology" *
STAHL UND EISEN, Band 109, Nr. 9/10, 16. Mai 1989, Seiten 513-520; F. HÖHNER et al.: "Verfahrens- und steuerungstechnisches Sicherheitskonzept einer Wasserstoff-Hochkonvektions-Haubenglühanlage" *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994013843A1 (fr) * 1992-12-11 1994-06-23 Messer Griesheim Gmbh Procede de recuit sans formation de suie de feuillards d'acier dans un four a recuit
HRP931483A2 (hr) * 1992-12-11 1995-02-28 Messer Griesheim Gmbh Postupak za žarenje bez čađe čelične vrpce u peći za žarenje
US5645655A (en) * 1992-12-11 1997-07-08 Messer Greiesheim Gmbh Process to anneal steel strips in an annealing furnace without generating carbon black
WO1999025882A1 (fr) * 1997-11-14 1999-05-27 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede ameliore pour le recuit de rouleaux d'acier carbone etire et de bobines a feuille d'acier carbone
US6358337B1 (en) 1997-11-14 2002-03-19 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for the annealing of drawn carbon steel rolls and coils of carbon steel sheet

Also Published As

Publication number Publication date
DE3921321A1 (de) 1991-01-10

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Designated state(s): BE DE FR GB IT NL

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Effective date: 19910220

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Effective date: 19921207

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Owner name: KRUPP HOESCH STAHL AG

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Effective date: 19941031