JPS5397924A - Manufacture of low crack sensibility high strength steel for high heat input welding - Google Patents

Manufacture of low crack sensibility high strength steel for high heat input welding

Info

Publication number
JPS5397924A
JPS5397924A JP1277077A JP1277077A JPS5397924A JP S5397924 A JPS5397924 A JP S5397924A JP 1277077 A JP1277077 A JP 1277077A JP 1277077 A JP1277077 A JP 1277077A JP S5397924 A JPS5397924 A JP S5397924A
Authority
JP
Japan
Prior art keywords
heat input
strength steel
input welding
manufacture
high heat
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.)
Pending
Application number
JP1277077A
Other languages
Japanese (ja)
Inventor
Seiji Kobayashi
Mutsuo Hiromatsu
Kazuhiko Yano
Shuji Kinoshita
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP1277077A priority Critical patent/JPS5397924A/en
Publication of JPS5397924A publication Critical patent/JPS5397924A/en
Pending 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/78—Combined heat-treatments not provided for above

Abstract

PURPOSE:To substantially improve the toughness of the welded zone of high strength steel at the time of high heat input welding without using any expensive elements, by lowering the C and N contents of the steel to reduce island martensite; covering lack of strength with the addition of Nb; and controlling heating temp. before hot rolling and quench hardening temp.
JP1277077A 1977-02-07 1977-02-07 Manufacture of low crack sensibility high strength steel for high heat input welding Pending JPS5397924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1277077A JPS5397924A (en) 1977-02-07 1977-02-07 Manufacture of low crack sensibility high strength steel for high heat input welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1277077A JPS5397924A (en) 1977-02-07 1977-02-07 Manufacture of low crack sensibility high strength steel for high heat input welding

Publications (1)

Publication Number Publication Date
JPS5397924A true JPS5397924A (en) 1978-08-26

Family

ID=11814629

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1277077A Pending JPS5397924A (en) 1977-02-07 1977-02-07 Manufacture of low crack sensibility high strength steel for high heat input welding

Country Status (1)

Country Link
JP (1) JPS5397924A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55100960A (en) * 1979-01-23 1980-08-01 Sumitomo Metal Ind Ltd High tensile steel with low subsequent crack sensitivity
JPS60121219A (en) * 1983-12-05 1985-06-28 Sumitomo Metal Ind Ltd Production of tempered type high tension heavy-gage steel plate
JPS60204863A (en) * 1984-03-28 1985-10-16 Kobe Steel Ltd Steel for high heat input welded structure
JPH06145787A (en) * 1992-11-02 1994-05-27 Sumitomo Metal Ind Ltd Production of high tensile strength steel excellent in weldability
CN114395731A (en) * 2021-12-16 2022-04-26 南阳汉冶特钢有限公司 Low-welding crack sensitivity crack arrest steel HY950CF for hydroelectric engineering and production method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55100960A (en) * 1979-01-23 1980-08-01 Sumitomo Metal Ind Ltd High tensile steel with low subsequent crack sensitivity
JPS60121219A (en) * 1983-12-05 1985-06-28 Sumitomo Metal Ind Ltd Production of tempered type high tension heavy-gage steel plate
JPH0125371B2 (en) * 1983-12-05 1989-05-17 Sumitomo Metal Ind
JPS60204863A (en) * 1984-03-28 1985-10-16 Kobe Steel Ltd Steel for high heat input welded structure
JPH06145787A (en) * 1992-11-02 1994-05-27 Sumitomo Metal Ind Ltd Production of high tensile strength steel excellent in weldability
CN114395731A (en) * 2021-12-16 2022-04-26 南阳汉冶特钢有限公司 Low-welding crack sensitivity crack arrest steel HY950CF for hydroelectric engineering and production method thereof

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