ATE220123T1 - METHOD FOR PRODUCING FIRE-RESISTANT STEEL SHEET - Google Patents

METHOD FOR PRODUCING FIRE-RESISTANT STEEL SHEET

Info

Publication number
ATE220123T1
ATE220123T1 AT99123536T AT99123536T ATE220123T1 AT E220123 T1 ATE220123 T1 AT E220123T1 AT 99123536 T AT99123536 T AT 99123536T AT 99123536 T AT99123536 T AT 99123536T AT E220123 T1 ATE220123 T1 AT E220123T1
Authority
AT
Austria
Prior art keywords
degrees
yield strength
strip
steel sheet
resistant steel
Prior art date
Application number
AT99123536T
Other languages
German (de)
Inventor
Andreas Dr-Ing Kern
Gerd Dr-Ing Graenzdoerffer
Udo Dr-Ing Schriever
Original Assignee
Thyssenkrupp 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 Thyssenkrupp Stahl Ag filed Critical Thyssenkrupp Stahl Ag
Application granted granted Critical
Publication of ATE220123T1 publication Critical patent/ATE220123T1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • 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
    • C21D1/26—Methods of annealing
    • C21D1/28—Normalising
    • 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
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

Constructional sheet is manufactured from a nickel-free low alloy steel having a low yield strength ratio by hot rolling cast slab to strip and air cooling to the coiling temperature. Production of an up to 15 mm thick sheet from a steel having a yield strength (Re) greater than 235 N/mm<2>, yield strength ratio (Re/Rm) 0.4-0.65, and composition of (by weight) 0.01-0.14% C, 0.20-1.20% Mn, 0.020-0.045% soluble Al, 0.70-0.90% Cr, 0.10-0.25% Mo, 0.01-0.05% V, balance Fe and impurities, comprises hot rolling cast slabs or thin slabs to strip using a starting temperature of 1000-1350 degrees C and a finishing temperature of above 850 degrees C, air cooling to a coiling temperature of 720-780 degrees C, and then cutting up the coiled strip into sheets.
AT99123536T 1998-12-07 1999-11-26 METHOD FOR PRODUCING FIRE-RESISTANT STEEL SHEET ATE220123T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19856265A DE19856265A1 (en) 1998-12-07 1998-12-07 Process for the production of fire-resistant steel sheets

Publications (1)

Publication Number Publication Date
ATE220123T1 true ATE220123T1 (en) 2002-07-15

Family

ID=7890160

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99123536T ATE220123T1 (en) 1998-12-07 1999-11-26 METHOD FOR PRODUCING FIRE-RESISTANT STEEL SHEET

Country Status (5)

Country Link
EP (1) EP1008667B1 (en)
AT (1) ATE220123T1 (en)
DE (2) DE19856265A1 (en)
DK (1) DK1008667T3 (en)
ES (1) ES2178865T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009524741A (en) * 2006-01-26 2009-07-02 アルヴェーディ、ジョヴァンニ Hot rolled low alloy steel sheet for finished product by cold pressing and shearing
JP4673822B2 (en) * 2006-11-14 2011-04-20 新日本製鐵株式会社 Refractory steel material excellent in toughness of welded joint and method for producing the same
CN102400055B (en) * 2010-09-07 2014-03-12 鞍钢股份有限公司 Low-cost yield ratio controllable high-strength high-toughness steel plate and manufacturing method thereof
CN112522595B (en) * 2019-09-19 2022-10-21 宝山钢铁股份有限公司 High-strength thin-specification fire-resistant weather-resistant steel plate/steel belt and production method thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4990196A (en) * 1988-06-13 1991-02-05 Nippon Steel Corporation Process for manufacturing building construction steel having excellent fire resistance and low yield ratio
IT1242132B (en) * 1990-08-01 1994-02-16 Ilva Spa PROCEDURE FOR THE PRODUCTION OF A FIRE RESISTANT STRUCTURAL STEEL
JP2828755B2 (en) * 1990-08-29 1998-11-25 株式会社神戸製鋼所 Manufacturing method of low yield ratio 80 ▲ kgｆf / ▲ mm ▼▼ 2 上 class steel sheet with excellent weldability
JPH08143954A (en) * 1994-11-17 1996-06-04 Kobe Steel Ltd Production of steel plate excellent in weld crack resistance and having 780n/square millimeter class tensile strength
DE19724051C1 (en) * 1997-06-07 1999-03-11 Thyssen Stahl Ag Heavy plates up to 50 mm thick made of fire-resistant nickel-free steels for steel construction and process for the production of heavy plates from them
JP3760587B2 (en) * 1997-09-16 2006-03-29 Ｊｆｅスチール株式会社 Manufacturing method of refractory ERW welded square steel pipe with excellent hot-dip galvanizing crack resistance

Also Published As

Publication number Publication date
ES2178865T3 (en) 2003-01-01
DE59901917D1 (en) 2002-08-08
DE19856265A1 (en) 2000-06-15
EP1008667A1 (en) 2000-06-14
DK1008667T3 (en) 2002-10-14
EP1008667B1 (en) 2002-07-03

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee