JPS55119124A - Manufacture of low yield ratio nonheat-treated high tensile steel plate - Google Patents

Manufacture of low yield ratio nonheat-treated high tensile steel plate

Info

Publication number
JPS55119124A
JPS55119124A JP2791179A JP2791179A JPS55119124A JP S55119124 A JPS55119124 A JP S55119124A JP 2791179 A JP2791179 A JP 2791179A JP 2791179 A JP2791179 A JP 2791179A JP S55119124 A JPS55119124 A JP S55119124A
Authority
JP
Japan
Prior art keywords
steel plate
yield ratio
slab
low yield
manufacture
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
JP2791179A
Other languages
Japanese (ja)
Other versions
JPH0112814B2 (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 JP2791179A priority Critical patent/JPS55119124A/en
Publication of JPS55119124A publication Critical patent/JPS55119124A/en
Publication of JPH0112814B2 publication Critical patent/JPH0112814B2/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

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:To manufacture a high tensile steel plate with a low yield ratio stably at a low cost by a method wherein the heating temperature and rolling conditions of the slab of low alloy steel containing an extremely small quantity of boron are controlled when the slab is hot-rolled and worked to a steel plate. CONSTITUTION:The slab of low alloy steel containing one kind or two kinds or more among 0.11-0.35% C, 0.05-0.90% Si, 0.75-2.50% Mn, 0.05-0.80% Mo, 0.01-0.08% Nb, 0.03-0.15% sol.Al, 0.0002-0.0015% B, 0.10-2.00% Cu, 0.10-2.50% Ni, 0.10-2.50% Cr, 0.01-0.10% V is heated below 1,150 deg.C. The slab is formed in a steel plate with fixed thickness by applying the rolling of the quantity of distortion due to the working of the thickness decrease of at least 30% at the temperatures of 900 deg.C or less and cooled as it is. The steel plate is tempering-treated at 550 deg.C or less as necessary. The steel plate being obtained having low carbon equivalent, is excellent in strength and toughness and possesses a low yield ratio.
JP2791179A 1979-03-09 1979-03-09 Manufacture of low yield ratio nonheat-treated high tensile steel plate Granted JPS55119124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2791179A JPS55119124A (en) 1979-03-09 1979-03-09 Manufacture of low yield ratio nonheat-treated high tensile steel plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2791179A JPS55119124A (en) 1979-03-09 1979-03-09 Manufacture of low yield ratio nonheat-treated high tensile steel plate

Publications (2)

Publication Number Publication Date
JPS55119124A true JPS55119124A (en) 1980-09-12
JPH0112814B2 JPH0112814B2 (en) 1989-03-02

Family

ID=12234056

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2791179A Granted JPS55119124A (en) 1979-03-09 1979-03-09 Manufacture of low yield ratio nonheat-treated high tensile steel plate

Country Status (1)

Country Link
JP (1) JPS55119124A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58164760A (en) * 1982-03-25 1983-09-29 Sumitomo Metal Ind Ltd Stainless clad steel plate for pressure vessel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05280110A (en) * 1991-08-30 1993-10-26 Kazuo Tsukada Wall construction in two-by-four method housing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58164760A (en) * 1982-03-25 1983-09-29 Sumitomo Metal Ind Ltd Stainless clad steel plate for pressure vessel

Also Published As

Publication number Publication date
JPH0112814B2 (en) 1989-03-02

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