FR2445858A1 - WELDABLE CONCRETE STEEL AND PROCESS FOR OBTAINING SAME - Google Patents

WELDABLE CONCRETE STEEL AND PROCESS FOR OBTAINING SAME

Info

Publication number
FR2445858A1
FR2445858A1 FR8000255A FR8000255A FR2445858A1 FR 2445858 A1 FR2445858 A1 FR 2445858A1 FR 8000255 A FR8000255 A FR 8000255A FR 8000255 A FR8000255 A FR 8000255A FR 2445858 A1 FR2445858 A1 FR 2445858A1
Authority
FR
France
Prior art keywords
steel
weldable
perlite
ferrite
degrees
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
FR8000255A
Other languages
French (fr)
Other versions
FR2445858B1 (en
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.)
Stahlwerke Pein-Salzgitter AG
Original Assignee
Stahlwerke Pein-Salzgitter AG
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 Stahlwerke Pein-Salzgitter AG filed Critical Stahlwerke Pein-Salzgitter AG
Publication of FR2445858A1 publication Critical patent/FR2445858A1/en
Application granted granted Critical
Publication of FR2445858B1 publication Critical patent/FR2445858B1/fr
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
    • C21D8/06—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
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Steel (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Heat Treatment Of Articles (AREA)
  • Laminated Bodies (AREA)

Abstract

Cet acier présente, outre une bonne résistance à la traction et une limite d'étirage favorable, peu de risques de fissuration et un meilleur allongement de rupture. Cet acier ne comprend que deux couches concentriques : un noyau exclusivement en perlite et ferrite et une couche extérieure en martensite adoucie. On y arrive par un refroidissement partant par exemple de 550 degrés , pour atteindre la température de, par exemple, 500 degrés pour laquelle il ne peut pas se former de baïnite B et pour laquelle l'austénite se transforme en perlite P et ferrite F tandis que la couche extérieure refroidie et ensuite réchauffée par la chaleur de transformation se transforme elle-même en martensite adoucie, comme il apparaît sur le graphique ci-joint. Cet acier ainsi obtenu économiquement est destiné à servir d'armature pour le béton en différents diamètres.This steel has, in addition to good tensile strength and a favorable draw limit, little risk of cracking and better elongation at break. This steel has only two concentric layers: a core exclusively in perlite and ferrite and an outer layer in soft martensite. This is achieved by cooling starting for example from 550 degrees, to reach the temperature of, for example, 500 degrees for which it is not possible to form baynite B and for which the austenite is transformed into perlite P and ferrite F while that the outer layer cooled and then reheated by the heat of transformation itself turns into soft martensite, as shown in the accompanying graph. This steel thus obtained economically is intended to serve as reinforcement for concrete in different diameters.

FR8000255A 1979-01-05 1980-01-03 WELDABLE CONCRETE STEEL AND PROCESS FOR OBTAINING SAME Granted FR2445858A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2900271A DE2900271C2 (en) 1979-01-05 1979-01-05 Weldable reinforcing steel and process for its manufacture

Publications (2)

Publication Number Publication Date
FR2445858A1 true FR2445858A1 (en) 1980-08-01
FR2445858B1 FR2445858B1 (en) 1984-05-04

Family

ID=6060073

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8000255A Granted FR2445858A1 (en) 1979-01-05 1980-01-03 WELDABLE CONCRETE STEEL AND PROCESS FOR OBTAINING SAME

Country Status (13)

Country Link
JP (1) JPS55115949A (en)
AU (1) AU534561B2 (en)
BE (1) BE881003A (en)
CA (1) CA1129312A (en)
DE (1) DE2900271C2 (en)
ES (1) ES8107320A1 (en)
FI (1) FI69120C (en)
FR (1) FR2445858A1 (en)
GB (1) GB2047270B (en)
IT (1) IT1164547B (en)
LU (1) LU82058A1 (en)
NL (1) NL8000059A (en)
SE (1) SE451020B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0169827A1 (en) * 1984-07-23 1986-01-29 Arbed S.A. Method for producing high-carbon steel wire rod
FR2684691A1 (en) * 1991-12-04 1993-06-11 Unimetall Sa Process for the continuous manufacture of a travelling steel wire, especially of a wire for reinforcing concrete
EP1111075A1 (en) * 1999-12-23 2001-06-27 SMS Demag AG Wire heat treating process

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3431008C2 (en) 1984-08-23 1986-10-16 Dyckerhoff & Widmann AG, 8000 München Heat treatment of hot rolled bars or wires
DD231577B1 (en) * 1984-12-17 1987-09-09 Brandenburg Stahl Walzwerk METHOD FOR INCREASING THE STRENGTH OF REINFORCING STEELS
DD234281B1 (en) * 1984-12-21 1989-06-21 Florin Stahl Walzwerk METHOD FOR PRESSURE WATER TREATMENT OF ROLLING STEEL PRODUCTS
DD239805B1 (en) * 1985-07-29 1988-06-22 Thaelmann Schwermaschbau Veb METHOD FOR PRODUCING A CONCRETE STEEL
US4786338A (en) * 1985-10-31 1988-11-22 Norio Anzawa Method for cooling rolled steels
US6395109B1 (en) 2000-02-15 2002-05-28 Cargill, Incorporated Bar product, cylinder rods, hydraulic cylinders, and method for manufacturing
IT1391760B1 (en) * 2008-11-11 2012-01-27 Danieli Off Mecc THERMAL TREATMENT PROCESS OF LAMINATES
KR101787287B1 (en) * 2016-10-21 2017-10-19 현대제철 주식회사 High strength steel deformed bar and method of manufacturing the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2204693A1 (en) * 1972-10-31 1974-05-24 Centre Rech Metallurgique
DE2426920A1 (en) * 1973-06-04 1974-12-19 Hoogovens Ijmuiden Bv PROCESS FOR MANUFACTURING REINFORCEMENT STEELS
DE2439784A1 (en) * 1973-09-24 1975-04-03 Qualitaets Und Edelstahl Kom V Concrete reinforcing rods - are quenched after hot rolling and profiling
FR2243260A1 (en) * 1973-09-11 1975-04-04 Salzgitter Peine Stahlwerke
FR2299409A1 (en) * 1975-01-29 1976-08-27 Centre Rech Metallurgique PROCESS FOR MAKING LAMINATED STEEL PRODUCTS

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2204693A1 (en) * 1972-10-31 1974-05-24 Centre Rech Metallurgique
DE2426920A1 (en) * 1973-06-04 1974-12-19 Hoogovens Ijmuiden Bv PROCESS FOR MANUFACTURING REINFORCEMENT STEELS
FR2231758A1 (en) * 1973-06-04 1974-12-27 Hoogovens Ijmuiden Bv
FR2243260A1 (en) * 1973-09-11 1975-04-04 Salzgitter Peine Stahlwerke
DE2439784A1 (en) * 1973-09-24 1975-04-03 Qualitaets Und Edelstahl Kom V Concrete reinforcing rods - are quenched after hot rolling and profiling
FR2299409A1 (en) * 1975-01-29 1976-08-27 Centre Rech Metallurgique PROCESS FOR MAKING LAMINATED STEEL PRODUCTS

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0169827A1 (en) * 1984-07-23 1986-01-29 Arbed S.A. Method for producing high-carbon steel wire rod
FR2684691A1 (en) * 1991-12-04 1993-06-11 Unimetall Sa Process for the continuous manufacture of a travelling steel wire, especially of a wire for reinforcing concrete
EP1111075A1 (en) * 1999-12-23 2001-06-27 SMS Demag AG Wire heat treating process
US6682612B2 (en) 1999-12-23 2004-01-27 Sms Demag Ag Method of heat treatment of wire

Also Published As

Publication number Publication date
NL8000059A (en) 1980-07-08
AU534561B2 (en) 1984-02-09
GB2047270B (en) 1982-12-15
FI69120B (en) 1985-08-30
CA1129312A (en) 1982-08-10
FI69120C (en) 1987-05-05
ES487449A0 (en) 1980-12-16
SE8000069L (en) 1980-07-06
LU82058A1 (en) 1980-04-23
GB2047270A (en) 1980-11-26
FR2445858B1 (en) 1984-05-04
ES8107320A1 (en) 1980-12-16
IT1164547B (en) 1987-04-15
BE881003A (en) 1980-05-02
IT7928312A0 (en) 1979-12-21
AU5428780A (en) 1980-07-10
FI794092A (en) 1980-07-06
DE2900271A1 (en) 1980-07-17
JPS55115949A (en) 1980-09-06
DE2900271C2 (en) 1984-01-26
SE451020B (en) 1987-08-24

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Legal Events

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