EP0481575A3 - Process for manufacturing weldable high-tensile steel sheets and use of these sheets - Google Patents

Process for manufacturing weldable high-tensile steel sheets and use of these sheets Download PDF

Info

Publication number
EP0481575A3
EP0481575A3 EP19910250279 EP91250279A EP0481575A3 EP 0481575 A3 EP0481575 A3 EP 0481575A3 EP 19910250279 EP19910250279 EP 19910250279 EP 91250279 A EP91250279 A EP 91250279A EP 0481575 A3 EP0481575 A3 EP 0481575A3
Authority
EP
European Patent Office
Prior art keywords
sheets
max
cooled
air
manufacturing
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.)
Granted
Application number
EP19910250279
Other languages
German (de)
Other versions
EP0481575A2 (en
EP0481575B1 (en
Inventor
Klaus Dr. Freier
Klaus Dr. Seifert
Walter Dr. Zimnik
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.)
Preussag Stahl AG
Original Assignee
Preussag 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 Preussag Stahl AG filed Critical Preussag Stahl AG
Publication of EP0481575A2 publication Critical patent/EP0481575A2/en
Publication of EP0481575A3 publication Critical patent/EP0481575A3/en
Application granted granted Critical
Publication of EP0481575B1 publication Critical patent/EP0481575B1/en
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
    • C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
    • 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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • 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
    • C21D2211/009—Pearlite
    • 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
    • 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
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling

Abstract

A process for manufacturing a thick-walled sheet and the use and application thereof, from steel having a yield strength of 420-500 but especially higher than 500 N/mm<2>, which has a ferritic-perlitic microstructure, high toughness and good weldability, are proposed. A continuous casting ingot having a composition in % by weight of 0.02 to 0.10 % C 0.05 to 0.50 % Si 1.00 to 2.00 % Mn max. 0.02 % P max. 0.01 % S 0.015 to 0.08 % Al max. 0.01 % N 0.30 to 1.60 % Ni 0.20 to 1.60 % Cu 0.04 to 0.10 % V 0.01 to 0.05 % Nb 0.01 to 0.04 % Ti the remainder being iron and unavoidable impurities, is heated to temperatures greater than 1200 DEG C, cooled in air to a surface temperature of less than 1000 DEG C and then thermomechanically rolled without interval between passes at a final rolling temperature of about 750 to 650 DEG C, and the sheet is then cooled in still air or in a stack to less than 200 DEG C and finally, after heating to about 420 to 610 DEG C, again cooled in air to room temperature. <IMAGE>
EP91250279A 1990-10-19 1991-10-11 Process for manufacturing weldable high-tensile steel sheets and use of these sheets Expired - Lifetime EP0481575B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4033700 1990-10-19
DE4033700A DE4033700C1 (en) 1990-10-19 1990-10-19

Publications (3)

Publication Number Publication Date
EP0481575A2 EP0481575A2 (en) 1992-04-22
EP0481575A3 true EP0481575A3 (en) 1992-08-26
EP0481575B1 EP0481575B1 (en) 1995-06-28

Family

ID=6416886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91250279A Expired - Lifetime EP0481575B1 (en) 1990-10-19 1991-10-11 Process for manufacturing weldable high-tensile steel sheets and use of these sheets

Country Status (4)

Country Link
EP (1) EP0481575B1 (en)
AT (1) ATE124464T1 (en)
DE (2) DE4033700C1 (en)
ES (1) ES2074651T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003069008A1 (en) * 2002-02-12 2003-08-21 The Timken Company Low carbon microalloyed steel
CN105132805B (en) * 2015-09-15 2017-03-15 攀钢集团攀枝花钢铁研究院有限公司 A kind of steel for welded structures containing vanadium and preparation method thereof
DE102018132816A1 (en) * 2018-12-19 2020-06-25 Voestalpine Stahl Gmbh Process for the production of thermo-mechanically produced profiled hot-rolled products
DE102018132908A1 (en) * 2018-12-19 2020-06-25 Voestalpine Stahl Gmbh Process for the production of thermo-mechanically produced hot strip products
CN114438415A (en) * 2022-01-26 2022-05-06 宝武集团鄂城钢铁有限公司 36 kg-grade extra-thick low-temperature high-toughness ship plate steel and production method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030309A2 (en) * 1979-12-06 1981-06-17 Preussag Stahl Aktiengesellschaft Hot rolled strip or plate of denitrided steel and process for its production
EP0098564A1 (en) * 1982-07-09 1984-01-18 MANNESMANN Aktiengesellschaft Process for producing fine-grained, weldable plates for large pipes
EP0123406A2 (en) * 1983-03-17 1984-10-31 Armco Inc. Low alloy steel plate and process for production thereof
EP0345206A1 (en) * 1988-06-01 1989-12-06 MANNESMANN Aktiengesellschaft Method of producing thick plate
DE4009971A1 (en) * 1989-03-29 1990-10-04 Nippon Steel Corp METHOD FOR PRODUCING HIGH-STRENGTH STEEL WITH IMPROVED WELDABILITY AND LOW-TEMPERATURE TOUGHNESS

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030309A2 (en) * 1979-12-06 1981-06-17 Preussag Stahl Aktiengesellschaft Hot rolled strip or plate of denitrided steel and process for its production
EP0098564A1 (en) * 1982-07-09 1984-01-18 MANNESMANN Aktiengesellschaft Process for producing fine-grained, weldable plates for large pipes
EP0123406A2 (en) * 1983-03-17 1984-10-31 Armco Inc. Low alloy steel plate and process for production thereof
EP0345206A1 (en) * 1988-06-01 1989-12-06 MANNESMANN Aktiengesellschaft Method of producing thick plate
DE4009971A1 (en) * 1989-03-29 1990-10-04 Nippon Steel Corp METHOD FOR PRODUCING HIGH-STRENGTH STEEL WITH IMPROVED WELDABILITY AND LOW-TEMPERATURE TOUGHNESS

Also Published As

Publication number Publication date
DE4033700C1 (en) 1992-02-06
ES2074651T3 (en) 1995-09-16
EP0481575A2 (en) 1992-04-22
EP0481575B1 (en) 1995-06-28
DE59105852D1 (en) 1995-08-03
ATE124464T1 (en) 1995-07-15

Similar Documents

Publication Publication Date Title
CA2310335A1 (en) High strength thin steel sheet, high strength galvannealed steel sheet and manufacturing method thereof
CA2352333A1 (en) Method for the manufacturing of an aluminium-magnesium-lithium alloy product
KR950026569A (en) High manganese steel with good hot workability and its hot rolling method
KR960701227A (en) PROCESS FOR THE PRODUCTION OF STAINLESS STEEL SHEETS HAVING AN EXCELLENT CORROSION RESISTANCE
JPS5597425A (en) Preparation of high-tensile steel with low yield ratio, low carbon and low alloy
CA2011746A1 (en) Steel sheets for porcelain enameling and method of producing the same
WO2004059026A3 (en) Dual phase hot rolled steel sheets having excellent formability and stretch flangeability
PL357413A1 (en) Method for producing non grain-oriented electric sheets
US4325751A (en) Method for producing a steel strip composed of a dual-phase steel
CA2241127A1 (en) Method of manufacturing thick steel product of high strength and high toughness having excellent weldability and minimal variation of structure and physical properties
EP0481575A3 (en) Process for manufacturing weldable high-tensile steel sheets and use of these sheets
ATE316157T1 (en) FERRITIC/MARTENSITIC STEEL WITH HIGH STRENGTH AND VERY FINE STRUCTURE
EP1453984B8 (en) Method for the production of hot strip or sheet from a micro-alloyed steel
EP0216044A3 (en) Process for manufacturing non-aging steel strip having a high cold formability
JPS6468422A (en) Production of high tensile steel plate for building
JPS5687622A (en) Production of nonquenched high toughness high tensile steel
JPS6462415A (en) Production of high-tensile unequal-sided unequal thickness steel shape
JPS6468421A (en) Production of high-tensile steel plate for construction
JP2001207234A (en) High tensile strength steel sheet having high ductility and high hole expansibility, and its producing method
JPS54155920A (en) Manufacture of hot rolled high tensile steel plate
JPS57140823A (en) Production of high tensile electric welded steel pipe of superior toughness
US3689258A (en) Low carbon high tensile strength alloy steel
JP3009750B2 (en) Method for producing structural steel sheet with excellent low-temperature toughness
PL346523A1 (en) Method for producing cold-rolled bands or sheets
JPS56119723A (en) Manufacture of nonrefined high tensile steel with superior low temperature toughness

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE DE ES FR GB IT LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PREUSSAG STAHL AKTIENGESELLSCHAFT

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE DE ES FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19920909

17Q First examination report despatched

Effective date: 19941118

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE ES FR GB IT LU NL SE

REF Corresponds to:

Ref document number: 124464

Country of ref document: AT

Date of ref document: 19950715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59105852

Country of ref document: DE

Date of ref document: 19950803

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2074651

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19951009

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19970910

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19970916

Year of fee payment: 7

Ref country code: AT

Payment date: 19970916

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19970918

Year of fee payment: 7

Ref country code: GB

Payment date: 19970918

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19970923

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19971006

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19971008

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19971014

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981011

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981011

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981011

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981012

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES

Effective date: 19981013

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981031

BERE Be: lapsed

Owner name: PREUSSAG STAHL A.G.

Effective date: 19981031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990501

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19981011

EUG Se: european patent has lapsed

Ref document number: 91250279.6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990630

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19990501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990803

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20001009

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051011