JPS5471714A - Manufacture of control-rolled high tensile steel with no separation - Google Patents

Manufacture of control-rolled high tensile steel with no separation

Info

Publication number
JPS5471714A
JPS5471714A JP13888177A JP13888177A JPS5471714A JP S5471714 A JPS5471714 A JP S5471714A JP 13888177 A JP13888177 A JP 13888177A JP 13888177 A JP13888177 A JP 13888177A JP S5471714 A JPS5471714 A JP S5471714A
Authority
JP
Japan
Prior art keywords
high tensile
tensile steel
separation
steel
temp
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
JP13888177A
Other languages
Japanese (ja)
Other versions
JPS5827327B2 (en
Inventor
Sadahiro Yamamoto
Chiaki Ouchi
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP52138881A priority Critical patent/JPS5827327B2/en
Publication of JPS5471714A publication Critical patent/JPS5471714A/en
Publication of JPS5827327B2 publication Critical patent/JPS5827327B2/en
Expired legal-status Critical Current

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  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE: To obtain steel products which prevent the occurence of separation causing deterioration in toughness and stress corrosion cracking resistant characteristics, unstable ductility rupture, etc., by subjecting a high tensile steel of a specific compsn. to controlled rolling.
CONSTITUTION: A steel contg. C; 0.03W0.18%, Si; 0.05W0.60% and Mn; 0.60W 2.0% as basic components and optionally contg. one or more out of Nb≤0.15%, V≤0.15%, Cu≤0.7%, Cr≤0.7%, Mo≤0.3%, Ni≤2.0% and Al≤0.1% is heated and rolled at a total reduction ratio above 30% in a temp. zone under recrystallization and at a finish temp. above Ar3. After the rolling, accelerated cooling is carried out at a cooling rate above 3°C/sec and stopped at 500W650°C.
USE: E.g., line pipes for transporting energy sources in cold districts and the depths of the sea.
COPYRIGHT: (C)1979,JPO&Japio
JP52138881A 1977-11-21 1977-11-21 Manufacturing method of controlled rolled high strength steel without separation Expired JPS5827327B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52138881A JPS5827327B2 (en) 1977-11-21 1977-11-21 Manufacturing method of controlled rolled high strength steel without separation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52138881A JPS5827327B2 (en) 1977-11-21 1977-11-21 Manufacturing method of controlled rolled high strength steel without separation

Publications (2)

Publication Number Publication Date
JPS5471714A true JPS5471714A (en) 1979-06-08
JPS5827327B2 JPS5827327B2 (en) 1983-06-08

Family

ID=15232286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52138881A Expired JPS5827327B2 (en) 1977-11-21 1977-11-21 Manufacturing method of controlled rolled high strength steel without separation

Country Status (1)

Country Link
JP (1) JPS5827327B2 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949124A1 (en) * 1979-12-06 1981-06-11 Stahlwerke Peine-Salzgitter Ag, 3150 Peine Hot rolled plate or strip made of de-nitrided steel - where controlled cooling after rolling produces high toughness in notched Charpy impact tests at sub-zero temps.
EP0030309A2 (en) * 1979-12-06 1981-06-17 Preussag Stahl Aktiengesellschaft Hot rolled strip or plate of denitrided steel and process for its production
JPS56119723A (en) * 1980-02-25 1981-09-19 Kawasaki Steel Corp Manufacture of nonrefined high tensile steel with superior low temperature toughness
JPS5792129A (en) * 1980-11-27 1982-06-08 Nippon Steel Corp Production of nonrefined high toughness steel
JPS5861223A (en) * 1981-10-07 1983-04-12 Nippon Steel Corp Manufacture of unnormalized high tension steel of higher weldability class than 50kg/mm2 with superior qualitative characteristic in z direction
JPS58136717A (en) * 1982-02-05 1983-08-13 Sumitomo Metal Ind Ltd Manufacture of high tensile hot rolled steel strip containing vanadium
JPS5976818A (en) * 1982-10-22 1984-05-02 Nippon Steel Corp Manufacture of steel material excellent in hydrogen induced crack resistance
JPS59170220A (en) * 1983-03-18 1984-09-26 Nippon Kokan Kk <Nkk> Production of un-tempered type low temperature steel plate
JPS6230849A (en) * 1985-08-01 1987-02-09 Nippon Kokan Kk <Nkk> Directly quenched and tempered steel having superior sscc resistance characteristic
JPS62290847A (en) * 1986-06-11 1987-12-17 Nippon Kokan Kk <Nkk> Steel having superior resistance to sulfide stress corrosion cracking and its manufacture
KR100435458B1 (en) * 1999-12-09 2004-06-10 주식회사 포스코 A method for manufacturing steel strip for linepipe with low yield ratio and superior low temperature toughness
US8246768B2 (en) 2005-11-09 2012-08-21 Nippon Steel Corporation High-tensile steel plate of low acoustic anisotropy and high weldability having yield stress of 450 MPa or greater and tensile strength of 570 MPa or greater, and process for producing the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5126615A (en) * 1974-08-30 1976-03-05 Sumitomo Metal Ind HICHOSHITSUKOCHORYOKUKOHAN NO SEIZOHO

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5126615A (en) * 1974-08-30 1976-03-05 Sumitomo Metal Ind HICHOSHITSUKOCHORYOKUKOHAN NO SEIZOHO

Cited By (18)

* 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
DE2949124A1 (en) * 1979-12-06 1981-06-11 Stahlwerke Peine-Salzgitter Ag, 3150 Peine Hot rolled plate or strip made of de-nitrided steel - where controlled cooling after rolling produces high toughness in notched Charpy impact tests at sub-zero temps.
JPS601927B2 (en) * 1980-02-25 1985-01-18 川崎製鉄株式会社 Manufacturing method for non-temperature high tensile strength steel with excellent low-temperature toughness
JPS56119723A (en) * 1980-02-25 1981-09-19 Kawasaki Steel Corp Manufacture of nonrefined high tensile steel with superior low temperature toughness
JPS5792129A (en) * 1980-11-27 1982-06-08 Nippon Steel Corp Production of nonrefined high toughness steel
JPS613370B2 (en) * 1980-11-27 1986-01-31 Nippon Steel Corp
JPS5861223A (en) * 1981-10-07 1983-04-12 Nippon Steel Corp Manufacture of unnormalized high tension steel of higher weldability class than 50kg/mm2 with superior qualitative characteristic in z direction
JPS62970B2 (en) * 1981-10-07 1987-01-10 Nippon Steel Corp
JPS58136717A (en) * 1982-02-05 1983-08-13 Sumitomo Metal Ind Ltd Manufacture of high tensile hot rolled steel strip containing vanadium
JPS5976818A (en) * 1982-10-22 1984-05-02 Nippon Steel Corp Manufacture of steel material excellent in hydrogen induced crack resistance
JPH0114965B2 (en) * 1982-10-22 1989-03-15 Nippon Steel Corp
JPS59170220A (en) * 1983-03-18 1984-09-26 Nippon Kokan Kk <Nkk> Production of un-tempered type low temperature steel plate
JPS6230849A (en) * 1985-08-01 1987-02-09 Nippon Kokan Kk <Nkk> Directly quenched and tempered steel having superior sscc resistance characteristic
JPH049847B2 (en) * 1985-08-01 1992-02-21
JPS62290847A (en) * 1986-06-11 1987-12-17 Nippon Kokan Kk <Nkk> Steel having superior resistance to sulfide stress corrosion cracking and its manufacture
JPH0543766B2 (en) * 1986-06-11 1993-07-02 Nippon Kokan Kk
KR100435458B1 (en) * 1999-12-09 2004-06-10 주식회사 포스코 A method for manufacturing steel strip for linepipe with low yield ratio and superior low temperature toughness
US8246768B2 (en) 2005-11-09 2012-08-21 Nippon Steel Corporation High-tensile steel plate of low acoustic anisotropy and high weldability having yield stress of 450 MPa or greater and tensile strength of 570 MPa or greater, and process for producing the same

Also Published As

Publication number Publication date
JPS5827327B2 (en) 1983-06-08

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