EP0181583B1 - Procédé pour produire une bande laminée à chaud ayant une structure à deux phases - Google Patents

Procédé pour produire une bande laminée à chaud ayant une structure à deux phases Download PDF

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Publication number
EP0181583B1
EP0181583B1 EP85113944A EP85113944A EP0181583B1 EP 0181583 B1 EP0181583 B1 EP 0181583B1 EP 85113944 A EP85113944 A EP 85113944A EP 85113944 A EP85113944 A EP 85113944A EP 0181583 B1 EP0181583 B1 EP 0181583B1
Authority
EP
European Patent Office
Prior art keywords
temperature
rolling
hot
range
slab
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
EP85113944A
Other languages
German (de)
English (en)
Other versions
EP0181583A3 (en
EP0181583A2 (fr
Inventor
Olaf Maid
Lutz Dr. Meyer
Antonio Massip
Wolfgang Dr. Müschenborn
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.)
Thyssen Stahl AG
Original Assignee
Thyssen 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 Thyssen Stahl AG filed Critical Thyssen Stahl AG
Priority to AT85113944T priority Critical patent/ATE60624T1/de
Publication of EP0181583A2 publication Critical patent/EP0181583A2/fr
Publication of EP0181583A3 publication Critical patent/EP0181583A3/de
Application granted granted Critical
Publication of EP0181583B1 publication Critical patent/EP0181583B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • C21D8/0221—Modifying the physical properties 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
    • 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
    • C21D2211/005—Ferrite
    • 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

Claims (4)

1. Procédé pour produire un feuillard laminé à chaud ayant une structure à deux phases avec de la martensite dans de la ferrite, à partir d'une brame préalablement produite par coulage en lingots ou coulée continue, par chauffage de la brame jusqu'à la température de laminage par laminage à chaud et finissage au laminoir, à une température >Ar3, par refroidissement accéléré depuis la chaude de laminoir, et par bobinage, le feuillard laminé à chaud:
a) étant fabriqué à partir d'un acier qui contient, en plus de 0,05 à 0,16% de C, 0,5% à 1,0% de Si, 0,3 à 1,5% de Cr, ≤0,025% de P, s 0015% de S, 0,02 à 0,10% d'AI et ≤ 0,011% de N, 0,2 à 0,4% de Mn, le cas échéant de 0,01 à 0,04% de titane en rapport stoechiométrique par rapport à l'azote présent, le reste du fer et les impuretés usuelles,
b) étant refroidi de manière accélérée immédiatement après le finissage au laminoir, à une vitesse moyenne dans la zone de 30 à 70°C/s et sans interruption, et
c) étant ensuite bobiné à une température dans la zone de 350 à 190°C.
2. Procédé selon la revendication 1, caractérisé en ce qu'on ajoute 0,06 à 0,12% de C à l'acier.
3. Procédé selon la revendicatiçn 1 ou 2, caractérisé en ce que la teneur en phosphore est limitée à 50,015%.
4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que le feuillard laminé à chaud est fini au laminoir à une température dans la zone de 20 à 50°C au dessus de Ar3 et est bobiné, après refroidissement depuis la chaude de laminoir, à une température dans la zone de 330 à 260°C.
EP85113944A 1984-11-08 1985-11-02 Procédé pour produire une bande laminée à chaud ayant une structure à deux phases Expired - Lifetime EP0181583B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85113944T ATE60624T1 (de) 1984-11-08 1985-11-02 Verfahren zur herstellung von warmband mit zweiphasen-gefuege.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3440752 1984-11-08
DE3440752A DE3440752A1 (de) 1984-11-08 1984-11-08 Verfahren zur herstellung von warmband mit zweiphasen-gefuege

Publications (3)

Publication Number Publication Date
EP0181583A2 EP0181583A2 (fr) 1986-05-21
EP0181583A3 EP0181583A3 (en) 1988-11-17
EP0181583B1 true EP0181583B1 (fr) 1991-01-30

Family

ID=6249757

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113944A Expired - Lifetime EP0181583B1 (fr) 1984-11-08 1985-11-02 Procédé pour produire une bande laminée à chaud ayant une structure à deux phases

Country Status (6)

Country Link
US (1) US4790889A (fr)
EP (1) EP0181583B1 (fr)
JP (1) JPH0676616B2 (fr)
AT (1) ATE60624T1 (fr)
CA (1) CA1269256A (fr)
DE (2) DE3440752A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3039842B2 (ja) * 1994-12-26 2000-05-08 川崎製鉄株式会社 耐衝撃性に優れる自動車用熱延鋼板および冷延鋼板ならびにそれらの製造方法
EP0750049A1 (fr) 1995-06-16 1996-12-27 Thyssen Stahl Aktiengesellschaft Acier ferritique; sa fabrication et son utilisation
AU756917B2 (en) * 1996-06-07 2003-01-30 Corus Staal B.V. Process and device for producing a high-strength steel strip
NL1007739C2 (nl) * 1997-12-08 1999-06-09 Hoogovens Staal Bv Werkwijze en inrichting voor het vervaardigen van een stalen band met hoge sterkte.
TR199900053T2 (xx) * 1996-07-12 1999-03-22 Thyssen Stahl Aktiengesellschaft �elikten yap�lm�� s�cak �erit ve bu �eridin �retimi i�in bir i�lem.
NL1007731C2 (nl) 1997-12-08 1999-06-09 Hoogovens Staal Bv Werkwijze en inrichting voor het vervaardigen van een ferritisch gewalste stalen band.
CA2297291C (fr) * 1999-02-09 2008-08-05 Kawasaki Steel Corporation Feuille d'acier laminee a chaud de forte resistance a la traction et methodes pour sa production
US20030041932A1 (en) * 2000-02-23 2003-03-06 Akio Tosaka High tensile hot-rolled steel sheet having excellent strain aging hardening properties and method for producing the same
DE10060948C2 (de) * 2000-12-06 2003-07-31 Thyssenkrupp Stahl Ag Verfahren zum Erzeugen eines Warmbandes aus einem einen hohen Mangan-Gehalt aufweisenden Stahl
FI114484B (fi) * 2002-06-19 2004-10-29 Rautaruukki Oyj Kuumavalssattu nauhateräs ja sen valmistusmenetelmä
DE10327383C5 (de) * 2003-06-18 2013-10-17 Aceria Compacta De Bizkaia S.A. Anlage zur Herstellung von Warmband mit Dualphasengefüge
SI1662011T1 (sl) 2004-11-24 2009-04-30 Giovanni Arvedi Toplo valjani dvofazni jekleni trak, ki ima značilnosti hladno valjanega traku
CN109988970B (zh) * 2019-04-01 2021-08-31 山东钢铁集团日照有限公司 一种具有不同屈强比的冷轧q&p980钢及其生产方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5818410B2 (ja) * 1977-12-06 1983-04-13 新日本製鐵株式会社 高延性低降伏比熱延高張力薄鋼板の製造方法
JPS5827329B2 (ja) * 1978-04-05 1983-06-08 新日本製鐵株式会社 延性に優れた低降伏比型高張力熱延鋼板の製造方法
AU527097B2 (en) * 1979-01-12 1983-02-17 Nippon Steel Corporation Artifically aged low yield to tensile strength ratio high strength steel sheet
SE430902B (sv) * 1979-05-09 1983-12-19 Svenskt Stal Ab Sett att vermebehandla ett stalband med 0,05 - 0,20% kolhalt och laga halter legeringsemnen
JPS5927370B2 (ja) * 1980-07-05 1984-07-05 新日本製鐵株式会社 プレス加工用高強度冷延鋼板
JPS5767130A (en) * 1980-10-14 1982-04-23 Kawasaki Steel Corp Production of hot rolled dual phase high tensile steel plate
JPS57137426A (en) * 1981-02-20 1982-08-25 Kawasaki Steel Corp Production of low yield ratio, high tensile hot rolled steel plate by mixed structure
JPS57137452A (en) * 1981-02-20 1982-08-25 Kawasaki Steel Corp Hot rolled high tensile steel plate having composite structure and its manufacture
JPS5893814A (ja) * 1981-11-30 1983-06-03 Kawasaki Steel Corp 低降伏比高張力厚鋼板の製造方法
US4466842A (en) * 1982-04-03 1984-08-21 Nippon Steel Corporation Ferritic steel having ultra-fine grains and a method for producing the same

Also Published As

Publication number Publication date
DE3581591D1 (de) 1991-03-07
DE3440752C2 (fr) 1987-08-06
EP0181583A3 (en) 1988-11-17
ATE60624T1 (de) 1991-02-15
JPH0676616B2 (ja) 1994-09-28
US4790889A (en) 1988-12-13
DE3440752A1 (de) 1986-05-22
EP0181583A2 (fr) 1986-05-21
CA1269256A (fr) 1990-05-22
JPS61159535A (ja) 1986-07-19

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