DK0870848T3 - Niobium containing steel and method of making flat products of this steel - Google Patents

Niobium containing steel and method of making flat products of this steel

Info

Publication number
DK0870848T3
DK0870848T3 DK98200844T DK98200844T DK0870848T3 DK 0870848 T3 DK0870848 T3 DK 0870848T3 DK 98200844 T DK98200844 T DK 98200844T DK 98200844 T DK98200844 T DK 98200844T DK 0870848 T3 DK0870848 T3 DK 0870848T3
Authority
DK
Denmark
Prior art keywords
steel
niobium
degrees
flat products
making flat
Prior art date
Application number
DK98200844T
Other languages
Danish (da)
Inventor
Philippe Harlet
Helmut Ruhl
Firmin Beco
Heiko Reichelt
Original Assignee
Cockerill Rech & Dev
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3890428&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DK0870848(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Cockerill Rech & Dev filed Critical Cockerill Rech & Dev
Application granted granted Critical
Publication of DK0870848T3 publication Critical patent/DK0870848T3/en

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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
    • 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 by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
    • C21D8/0426—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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • 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 by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/041—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing involving a particular fabrication or treatment of ingot or slab
    • 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 by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
    • C21D8/0436—Cold rolling
    • 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 by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
    • C21D8/0473—Final recrystallisation annealing

Abstract

Extra mild niobium steel is free of titanium and comprises no more than following by weight: 0.100% carbon, 1.000% manganese, 0.100% phosphorous, 0.020% sulphur, 0.080% aluminium, 0.012% nitrogen and 0.500% silicon, plus an amount of niobium stoichiometrically less than the N content and enough boron or zirconium to fix all the N which is not fixed by the Nb. The rest is iron plus any impurities. Also claimed is casting the steel into a slab at least 1000 degrees C, then hot rolling to form a strip with a final rolling temperature above Ar3, winding into a reel between 500 and 750 degrees C, cold rolling to the desired thickness, annealing to recrystallise and finally shaping the finished article.
DK98200844T 1997-03-27 1998-03-18 Niobium containing steel and method of making flat products of this steel DK0870848T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE9700270A BE1011066A3 (en) 1997-03-27 1997-03-27 Niobium steel and method for manufacturing flat products from it.

Publications (1)

Publication Number Publication Date
DK0870848T3 true DK0870848T3 (en) 2004-01-12

Family

ID=3890428

Family Applications (1)

Application Number Title Priority Date Filing Date
DK98200844T DK0870848T3 (en) 1997-03-27 1998-03-18 Niobium containing steel and method of making flat products of this steel

Country Status (7)

Country Link
EP (1) EP0870848B1 (en)
AT (1) ATE249528T1 (en)
BE (1) BE1011066A3 (en)
DE (1) DE69817900T2 (en)
DK (1) DK0870848T3 (en)
ES (1) ES2207787T3 (en)
PT (1) PT870848E (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2820150B1 (en) * 2001-01-26 2003-03-28 Usinor HIGH STRENGTH ISOTROPIC STEEL, METHOD FOR MANUFACTURING SHEETS AND SHEETS OBTAINED
EP1550191B1 (en) 2002-10-09 2018-06-20 Prysmian S.p.A. Method of screening the magnetic field generated by an electrical power transmission line and electrical power transmission line so screened.
FR2845694B1 (en) * 2002-10-14 2005-12-30 Usinor METHOD FOR MANUFACTURING COOK-CURABLE STEEL SHEETS, STEEL SHEETS AND PIECES THUS OBTAINED
UA109963C2 (en) * 2011-09-06 2015-10-26 CATHANE STEEL, APPROVING CONSEQUENCES OF SEPARATION OF PARTS AFTER HOT FORMING AND / OR CUTTING IN TOOL, THAT HAS A HIGHER MACHINE

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5853708B2 (en) * 1979-03-15 1983-11-30 住友金属工業株式会社 Welded steel pipe with excellent butt toughness
JPS6045689B2 (en) * 1982-02-19 1985-10-11 川崎製鉄株式会社 Method for manufacturing cold rolled steel sheet with excellent press formability
JPS59123721A (en) * 1982-12-29 1984-07-17 Kawasaki Steel Corp Production of cold rolled steel sheet having excellent processability
JPS6164852A (en) * 1984-09-03 1986-04-03 Kawasaki Steel Corp Non-aging cold rolled steel sheet for press forming having extremely low anisotropy in plane
JPS6160860A (en) * 1984-09-03 1986-03-28 Nippon Kokan Kk <Nkk> Zinc plated steel sheet for deep drawing, superior in plating adhesion and its manufacture
DE3803064C2 (en) * 1988-01-29 1995-04-20 Preussag Stahl Ag Cold rolled sheet or strip and process for its manufacture
CA2022907C (en) * 1989-08-09 1994-02-01 Mitsuru Kitamura Method of manufacturing a steel sheet
JP2542536B2 (en) * 1991-02-28 1996-10-09 新日本製鐵株式会社 Method for producing cold-rolled steel sheet for deep drawing with excellent paint bake hardenability and secondary workability
CA2097900C (en) * 1992-06-08 1997-09-16 Saiji Matsuoka High-strength cold-rolled steel sheet excelling in deep drawability and method of producing the same
DE19547181C1 (en) * 1995-12-16 1996-10-10 Krupp Ag Hoesch Krupp Mfg. cold-rolled, high strength steel strip with good shapability
WO1997029217A1 (en) * 1996-02-08 1997-08-14 Nkk Corporation Steel sheet for two-piece battery can excellent in moldability, secondary work embrittlement resistance, and corrosion resistance
US5853903A (en) * 1996-05-07 1998-12-29 Nkk Corporation Steel sheet for excellent panel appearance and dent resistance after panel-forming

Also Published As

Publication number Publication date
BE1011066A3 (en) 1999-04-06
ATE249528T1 (en) 2003-09-15
PT870848E (en) 2004-01-30
EP0870848B1 (en) 2003-09-10
DE69817900T2 (en) 2004-07-22
ES2207787T3 (en) 2004-06-01
EP0870848A1 (en) 1998-10-14
DE69817900D1 (en) 2003-10-16

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