JPS5651534A - Production of steel plate of superior hydrogen sulfide crack resistance - Google Patents

Production of steel plate of superior hydrogen sulfide crack resistance

Info

Publication number
JPS5651534A
JPS5651534A JP12643079A JP12643079A JPS5651534A JP S5651534 A JPS5651534 A JP S5651534A JP 12643079 A JP12643079 A JP 12643079A JP 12643079 A JP12643079 A JP 12643079A JP S5651534 A JPS5651534 A JP S5651534A
Authority
JP
Japan
Prior art keywords
rolling
hydrogen sulfide
crack resistance
steel
steel plate
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
JP12643079A
Other languages
Japanese (ja)
Other versions
JPS5740211B2 (en
Inventor
Tamotsu Hashimoto
Yasuo Otani
Yasubumi Fujishiro
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 JP12643079A priority Critical patent/JPS5651534A/en
Publication of JPS5651534A publication Critical patent/JPS5651534A/en
Publication of JPS5740211B2 publication Critical patent/JPS5740211B2/ja
Granted 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

Abstract

PURPOSE:To produce a steel plate of superior hydrogen sulfide crack resistance by hot rolling the low carbon steel of extremely less S content and contained with the specific amount of Ca then subjecting the same to hardening and tempering by the specific conditions. CONSTITUTION:A steel slab contg. 0.05-0.20% C, 1.0%>Mn, 0.003%>S and Ca at a value at which the ratio of Ca/S becomes 1-10 is heated to 1,000-1,180 deg.C. As the process for the next hot rolling and subsequent processes, rolling is finished at >=800 deg.C temperatures or working is performed by a twice heating and twice rolling method. In this method, the steel slab is once heated to >=1,100 deg.C, after which the rolling is suspended where intermediate plate thickness is attained, and the slab is again cooled down to <=600 deg.C, thence, it is again heated to 800-1,000 deg.C above the Ac3 transformation point and the rolling is finished at <=75% draft and at >= 800 deg.C. Thence, steel slab is anuealed directly >=750 deg.C, then is tempered <=Ac1 transformation point in above described both process.
JP12643079A 1979-10-02 1979-10-02 Production of steel plate of superior hydrogen sulfide crack resistance Granted JPS5651534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12643079A JPS5651534A (en) 1979-10-02 1979-10-02 Production of steel plate of superior hydrogen sulfide crack resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12643079A JPS5651534A (en) 1979-10-02 1979-10-02 Production of steel plate of superior hydrogen sulfide crack resistance

Publications (2)

Publication Number Publication Date
JPS5651534A true JPS5651534A (en) 1981-05-09
JPS5740211B2 JPS5740211B2 (en) 1982-08-26

Family

ID=14934988

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12643079A Granted JPS5651534A (en) 1979-10-02 1979-10-02 Production of steel plate of superior hydrogen sulfide crack resistance

Country Status (1)

Country Link
JP (1) JPS5651534A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5977714A (en) * 1982-10-26 1984-05-04 Nec Corp Generator of nonlinear distortion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5977714A (en) * 1982-10-26 1984-05-04 Nec Corp Generator of nonlinear distortion

Also Published As

Publication number Publication date
JPS5740211B2 (en) 1982-08-26

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