AU2003266920A8 - Method and device for the continuous annealing of strip steel and correspondingly produced strip steel - Google Patents

Method and device for the continuous annealing of strip steel and correspondingly produced strip steel

Info

Publication number
AU2003266920A8
AU2003266920A8 AU2003266920A AU2003266920A AU2003266920A8 AU 2003266920 A8 AU2003266920 A8 AU 2003266920A8 AU 2003266920 A AU2003266920 A AU 2003266920A AU 2003266920 A AU2003266920 A AU 2003266920A AU 2003266920 A8 AU2003266920 A8 AU 2003266920A8
Authority
AU
Australia
Prior art keywords
strip steel
heating
temperature
gradient
station
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.)
Abandoned
Application number
AU2003266920A
Other versions
AU2003266920A1 (en
Inventor
Norbert Brachthauser
Hans-Toni Junius
Martin Grof
Heinz Hofinghoff
Peter Rademacher
Peter Hofinghoff
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.)
C D WALZHOLZ PRODUKTIONSGMBH
Original Assignee
C D WALZHOLZ PRODUKTIONSGMBH
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 C D WALZHOLZ PRODUKTIONSGMBH filed Critical C D WALZHOLZ PRODUKTIONSGMBH
Publication of AU2003266920A1 publication Critical patent/AU2003266920A1/en
Publication of AU2003266920A8 publication Critical patent/AU2003266920A8/en
Abandoned 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • 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
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/62—Continuous furnaces for strip or wire with direct resistance heating
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Spray Control Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)
  • Basic Packing Technique (AREA)

Abstract

The invention relates to a method for the continuous annealing of strip steel (1), whereby the strip steel (1) is heated in a first section (11) of a first heating station (6) with a heating gradient of at least 500 K/s, then heated in a second section (12) of the first heating station (6) with a lower heating gradient to a temperature above the A3 temperature and then cooled in a cooling station (13) with a very high cooling gradient back to ambient temperature. The short-term retention of the strip steel (1) above the A3 temperature allows a complete conversion of the structure with simultaneous solution of the total carbon content, however without complete homogenisation of the carbon to give austenite. For further tempering, the strip steel (1) is heated in a first section (11) of a second heating station (7) with a high heating gradient, than further heated to the annealing temperature in a second section (12) of the second heating station (7) and held for a short period and then recooled to ambient temperature in a cooling station (13) with a very high cooling gradient. The rapid and short-term heating to the annealing temperature prevents the decomposition of the martensite needles which have been formed and thus forms a fine-grain structure in the strip steel (1) with a martensite precipitated with the finest possible needles. A strip steel (1) particularly for the production of edge elements (16) for skis snowboards sliding boards or similar is also disclosed.
AU2003266920A 2002-08-20 2003-08-19 Method and device for the continuous annealing of strip steel and correspondingly produced strip steel Abandoned AU2003266920A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10238972A DE10238972B4 (en) 2002-08-20 2002-08-20 Method and device for the continuous tempering of strip steel and correspondingly produced strip steel
DE10238972.1 2002-08-20
PCT/DE2003/002771 WO2004018715A2 (en) 2002-08-20 2003-08-19 Method and device for the continuous annealing of strip steel and correspondingly produced strip steel

Publications (2)

Publication Number Publication Date
AU2003266920A1 AU2003266920A1 (en) 2004-03-11
AU2003266920A8 true AU2003266920A8 (en) 2004-03-11

Family

ID=31501934

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2003266920A Abandoned AU2003266920A1 (en) 2002-08-20 2003-08-19 Method and device for the continuous annealing of strip steel and correspondingly produced strip steel

Country Status (5)

Country Link
EP (1) EP1530649B1 (en)
AT (1) ATE318937T1 (en)
AU (1) AU2003266920A1 (en)
DE (3) DE10238972B4 (en)
WO (1) WO2004018715A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4171454B2 (en) 2004-11-19 2008-10-22 新日本製鐵株式会社 Equipment for manufacturing high-strength steel sheets or hot-dip galvanized high-strength steel sheets with excellent elongation and hole expansibility
JP5382421B2 (en) * 2009-02-24 2014-01-08 株式会社デルタツーリング Manufacturing method and heat treatment apparatus for high strength and high toughness thin steel
DE102011053698C5 (en) * 2011-09-16 2017-11-16 Benteler Automobiltechnik Gmbh Process for the manufacture of structural and chassis components by thermoforming and heating station
DE102014102033B4 (en) * 2014-02-18 2016-09-22 Gottfried Wilhelm Leibniz Universität Hannover Method for conductive heating of a sheet and heating device therefor
EP2933342A1 (en) * 2014-04-15 2015-10-21 Böhler-Uddeholm Precision Strip GmbH Method and device for producing a strip steel with bainitic microstructure
CN110989522B (en) * 2019-12-06 2022-09-09 东北大学 Multi-steel-coil-oriented optimal setting method for technological parameters in continuous annealing production process
DE102020125946A1 (en) 2020-10-05 2022-04-07 HEGGEMANN Aktiengesellschaft Process for processing an electrically conductive sheet metal blank

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1758528A1 (en) * 1968-06-20 1971-02-11 Uddeholms Ab Application of steel strip to elastic mechanical engineering elements, especially springs
US3929524A (en) * 1973-07-26 1975-12-30 Nikolai Grigorievich Filatov Method of heat treating linear long-length steel articles, apparatus for effecting said method and articles produced thereby
GB1420272A (en) * 1973-07-27 1976-01-07 Inst Metallofiziki Akademii Na Heat-treatment of elongate articles
DE3050367C1 (en) * 1980-05-05 1984-08-23 Vsesojuznyj naučno-issledovatel'skij institut Metiznoj promyšlennosti VNIIMETIZ, Magnitogorsk, Čeljabinskaja oblast' Method and device for heat treating a long moving product
US4404047A (en) * 1980-12-10 1983-09-13 Lasalle Steel Company Process for the improved heat treatment of steels using direct electrical resistance heating
US5542995A (en) * 1992-02-19 1996-08-06 Reilly; Robert Method of making steel strapping and strip and strapping and strip
IT1260566B (en) * 1992-06-30 1996-04-16 Danieli Off Mecc WRAPPING-UNWINDING UNIT FOR THIN SLABS
DE4340568C2 (en) * 1993-11-29 1996-04-18 Sendner Thermo Tec Anlagen Gmb Process for the continuous tempering of steel wire
DE19860472A1 (en) * 1998-12-28 2000-07-06 Bosch Gmbh Robert Process for tempering steel strips

Also Published As

Publication number Publication date
AU2003266920A1 (en) 2004-03-11
DE10238972A1 (en) 2004-03-11
EP1530649A2 (en) 2005-05-18
ATE318937T1 (en) 2006-03-15
DE10238972B4 (en) 2004-07-15
WO2004018715A3 (en) 2004-05-06
DE50302539D1 (en) 2006-04-27
WO2004018715A2 (en) 2004-03-04
DE10393626D2 (en) 2005-07-21
EP1530649B1 (en) 2006-03-01

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase