CA1262226C - Method for producing steel bars having improved low temperature toughness and steel bars produced thereby - Google Patents

Method for producing steel bars having improved low temperature toughness and steel bars produced thereby

Info

Publication number
CA1262226C
CA1262226C CA498404A CA498404A CA1262226C CA 1262226 C CA1262226 C CA 1262226C CA 498404 A CA498404 A CA 498404A CA 498404 A CA498404 A CA 498404A CA 1262226 C CA1262226 C CA 1262226C
Authority
CA
Canada
Prior art keywords
steel bars
temperature
steel
low temperature
improved low
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.)
Expired
Application number
CA498404A
Other languages
French (fr)
Other versions
CA1262226A (en
Inventor
Fukukazu Nakasato
Takahiko Adachi
Michitaka Fujita
Eisuke Kawamura
Susumu Kiyokoba
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
Priority claimed from JP27484184A external-priority patent/JPS61157629A/en
Priority claimed from JP27484284A external-priority patent/JPS61157630A/en
Application filed filed Critical
Priority to CA498404A priority Critical patent/CA1262226C/en
Application granted granted Critical
Publication of CA1262226A publication Critical patent/CA1262226A/en
Publication of CA1262226C publication Critical patent/CA1262226C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C21D8/08—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires for concrete reinforcement

Landscapes

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

Abstract

METHOD FOR PRODUCING STEEL BARS HAVING IMPROVED LOW TEMPERATURE TOUGHNESS AND STEEL BARS PRODUCED THEREBY Abstract of the Disclosure A method for producing steel bars is disclosed, which comprises the steps of: heating a steel to a temperature not exceeding 1000°C, the steel consisting essentially of : C: 0.02 - 0.10%, Si: not greater than 0.5%, Mn: 1.10 - 2.50%, Mo: 0.15 - 0.50%, Nb: 0.010 - 0.100%, Al: 0.010 - 0.100%, Cu: 0 - 0.30%, Ni: 0 - 1.20%, Cr: 0 - 1.20%, Ti: 0 - 0.05%, and B: 0 - 0.0030%, with the balance being iron and incidental impurities; hot-rolling the heated steel into a bar under such conditions that the finishing temperature is not higher than 850°C or 850 - 750°C with the total reduction during hot rolling, preferably in the temperature range between 880°C and the finishing temperature, being at least 60%, preferably the hot rolling for the last 2n passes being carried out using oval-, and round-type calibers with an equal reduction in thickness for each of the 2n passes; and cooling the hot-rolled bar to room temperature.
CA498404A 1984-12-28 1985-12-20 Method for producing steel bars having improved low temperature toughness and steel bars produced thereby Expired CA1262226C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA498404A CA1262226C (en) 1984-12-28 1985-12-20 Method for producing steel bars having improved low temperature toughness and steel bars produced thereby

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP274842/1984 1984-12-28
JP27484184A JPS61157629A (en) 1984-12-28 1984-12-28 Manufacture of steel bar having superior toughness at low temperature
JP27484284A JPS61157630A (en) 1984-12-28 1984-12-28 Manufacture of steel bar having superior toughness at low temperature
JP274841/1984 1984-12-28
CA498404A CA1262226C (en) 1984-12-28 1985-12-20 Method for producing steel bars having improved low temperature toughness and steel bars produced thereby

Publications (2)

Publication Number Publication Date
CA1262226A CA1262226A (en) 1989-10-10
CA1262226C true CA1262226C (en) 1989-10-10

Family

ID=26551214

Family Applications (1)

Application Number Title Priority Date Filing Date
CA498404A Expired CA1262226C (en) 1984-12-28 1985-12-20 Method for producing steel bars having improved low temperature toughness and steel bars produced thereby

Country Status (3)

Country Link
CA (1) CA1262226C (en)
DE (1) DE3545952A1 (en)
LU (1) LU86228A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4221497B2 (en) * 2003-05-20 2009-02-12 独立行政法人物質・材料研究機構 Warm rolling method for ultra-fine grain steel
DE102013208413B4 (en) * 2013-05-07 2019-10-10 Badische Stahlwerke Gmbh Reinforcing steel, production method for reinforcing steel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4060428A (en) * 1976-07-30 1977-11-29 Morgan Construction Company Process for forming ferrous billets into finished product
AU554218B2 (en) * 1983-11-11 1986-08-14 Sumitomo Metal Industries Ltd. Htnt low alloy steel bars for low temperature applications

Also Published As

Publication number Publication date
DE3545952A1 (en) 1986-07-10
DE3545952C2 (en) 1990-01-11
CA1262226A (en) 1989-10-10
LU86228A1 (en) 1986-10-06

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Legal Events

Date Code Title Description
MKLA Lapsed
MKLA Lapsed

Effective date: 19950410