JPS5442326A - Production of high-ductile, high-tensile normalized steel plate having decreased rolling anisotropy - Google Patents

Production of high-ductile, high-tensile normalized steel plate having decreased rolling anisotropy

Info

Publication number
JPS5442326A
JPS5442326A JP10929377A JP10929377A JPS5442326A JP S5442326 A JPS5442326 A JP S5442326A JP 10929377 A JP10929377 A JP 10929377A JP 10929377 A JP10929377 A JP 10929377A JP S5442326 A JPS5442326 A JP S5442326A
Authority
JP
Japan
Prior art keywords
heated
ductile
rolled
steel plate
anisotropy
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
JP10929377A
Other languages
Japanese (ja)
Other versions
JPS589814B2 (en
Inventor
Yasuo Otani
Seiichi Watanabe
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP10929377A priority Critical patent/JPS589814B2/en
Publication of JPS5442326A publication Critical patent/JPS5442326A/en
Publication of JPS589814B2 publication Critical patent/JPS589814B2/en
Expired 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE:A high-ductile, high-tensile normalized steel plate with decreased rolling anisotropy is obtained by particularizing a ratio of chemical composition components, controlling a blooming roll finish temperature and a degree of process, and restricting a heating temperature in thick plate rolling. CONSTITUTION:For example, steel ingots are made from molten steel with C eq:0.48%, containing C:0.12%, Si:0.27%, Mn:0.82%, P:0,015%, S:0.005%, Cu:0.26%, Ni:0.91%, Cr:0.44%, Mo:0.42%, V:0.05%, sol Al:0.077%, B:0.0025% and N:0.0074%. The steel ingot is heated to 1,280 deg.C to be blooming rolled, pressure rolled 15% at a finishing temperature of 1,000 deg.C and gradually cooled at a rate of 150 deg.C/day. It is, then, heated to 1,080 deg.C to be rolled into a finished thickness of 50mm., heated for one hour at 930 deg.C, water quenched, heated for one hour at 635 deg.C and cooled to room temperature. This process improves impact strength in the roll direction from 9kg-m to 14kg-m and drastically decreases rolling anisotropy.
JP10929377A 1977-09-10 1977-09-10 Manufacturing method for high-toughness, high-tensile tempered steel sheet with reduced rolling anisotropy Expired JPS589814B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10929377A JPS589814B2 (en) 1977-09-10 1977-09-10 Manufacturing method for high-toughness, high-tensile tempered steel sheet with reduced rolling anisotropy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10929377A JPS589814B2 (en) 1977-09-10 1977-09-10 Manufacturing method for high-toughness, high-tensile tempered steel sheet with reduced rolling anisotropy

Publications (2)

Publication Number Publication Date
JPS5442326A true JPS5442326A (en) 1979-04-04
JPS589814B2 JPS589814B2 (en) 1983-02-23

Family

ID=14506493

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10929377A Expired JPS589814B2 (en) 1977-09-10 1977-09-10 Manufacturing method for high-toughness, high-tensile tempered steel sheet with reduced rolling anisotropy

Country Status (1)

Country Link
JP (1) JPS589814B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS575842A (en) * 1980-05-13 1982-01-12 Asea Ab Manufacture of ferrite-austenite stainless steel
US4394187A (en) * 1981-02-25 1983-07-19 Sumitomo Metal Industries, Ltd. Method of making steels which are useful in fabricating pressure vessels
US5139583A (en) * 1992-01-21 1992-08-18 Kawasaki Steel Corporation Graphite precipitated hot-rolled steel plate having excellent bending workability and hardenability and method therefor
JP2002363634A (en) * 2001-06-08 2002-12-18 Kawasaki Steel Corp Method for detecting and judging abnormality of degree of vacuum in vacuum degassing operation, and method for improving internal quality of slab
CN109929982A (en) * 2019-03-19 2019-06-25 首钢集团有限公司 Production method of high-strength steel
CN111020349A (en) * 2019-10-18 2020-04-17 江阴兴澄特种钢铁有限公司 Manufacturing method of 150-doped 200 mm-thick normalized easy-to-weld hydroelectric steel plate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109355570B (en) * 2018-11-30 2020-07-07 湖南华菱湘潭钢铁有限公司 Production method of thin-specification easy-welding low-temperature structural steel plate

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS575842A (en) * 1980-05-13 1982-01-12 Asea Ab Manufacture of ferrite-austenite stainless steel
US4394187A (en) * 1981-02-25 1983-07-19 Sumitomo Metal Industries, Ltd. Method of making steels which are useful in fabricating pressure vessels
US5139583A (en) * 1992-01-21 1992-08-18 Kawasaki Steel Corporation Graphite precipitated hot-rolled steel plate having excellent bending workability and hardenability and method therefor
JP2002363634A (en) * 2001-06-08 2002-12-18 Kawasaki Steel Corp Method for detecting and judging abnormality of degree of vacuum in vacuum degassing operation, and method for improving internal quality of slab
CN109929982A (en) * 2019-03-19 2019-06-25 首钢集团有限公司 Production method of high-strength steel
CN111020349A (en) * 2019-10-18 2020-04-17 江阴兴澄特种钢铁有限公司 Manufacturing method of 150-doped 200 mm-thick normalized easy-to-weld hydroelectric steel plate

Also Published As

Publication number Publication date
JPS589814B2 (en) 1983-02-23

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