IE821651L - Steel reinforcements for concrete. - Google Patents

Steel reinforcements for concrete.

Info

Publication number
IE821651L
IE821651L IE821651A IE165182A IE821651L IE 821651 L IE821651 L IE 821651L IE 821651 A IE821651 A IE 821651A IE 165182 A IE165182 A IE 165182A IE 821651 L IE821651 L IE 821651L
Authority
IE
Ireland
Prior art keywords
phi
expressed
log
denoted
concrete
Prior art date
Application number
IE821651A
Other versions
IE53019B1 (en
Inventor
M Economopoulos
N Lambert
Original Assignee
Centre Rech Metallurgique
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 Centre Rech Metallurgique filed Critical Centre Rech Metallurgique
Publication of IE821651L publication Critical patent/IE821651L/en
Publication of IE53019B1 publication Critical patent/IE53019B1/en

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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
    • 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

Abstract

According to the process for the manufacture of reinforcements for concrete made of steel which has an elasticity limit of between 400 and 600 MPa and an elongation of at least 14 %, the steel reinforcing rod is cooled abruptly during or immediately after the rolling. The control parameters of the abrupt cooling, namely the mean heat flow density between 800 and 600 DEG C, denoted by phi and expressed in MW/m<2>, and the cooling time, denoted by t and expressed in seconds, simultaneously satisfy the following conditions: 0.45 d - 0.4 < phi .t < 0.82 d + 0.6 log phi >/= - 0.964 log d + 2.098 in which d denotes the diameter of the rod, expressed in mm. [CH639137A5]
IE1651/82A 1981-07-09 1982-07-08 Method of manufacturing steel reinforcements for concrete, having improved properties IE53019B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE6/47492A BE889575A (en) 1981-07-09 1981-07-09 PROCESS FOR THE MANUFACTURE OF STEEL CONCRETE REINFORCEMENTS WITH IMPROVED PROPERTIES.

Publications (2)

Publication Number Publication Date
IE821651L true IE821651L (en) 1983-01-09
IE53019B1 IE53019B1 (en) 1988-05-11

Family

ID=3874897

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1651/82A IE53019B1 (en) 1981-07-09 1982-07-08 Method of manufacturing steel reinforcements for concrete, having improved properties

Country Status (21)

Country Link
JP (1) JPS589920A (en)
KR (1) KR870001090B1 (en)
AT (1) AT375401B (en)
AU (1) AU536703B2 (en)
BE (1) BE889575A (en)
BR (1) BR8108179A (en)
CA (1) CA1201960A (en)
CH (1) CH639137A5 (en)
DD (1) DD202309A5 (en)
DK (1) DK152691C (en)
ES (1) ES513811A0 (en)
FI (1) FI72748C (en)
GR (1) GR77249B (en)
IE (1) IE53019B1 (en)
IN (1) IN154221B (en)
LU (1) LU84263A1 (en)
MX (1) MX159859A (en)
NO (1) NO156903C (en)
SE (1) SE462853B (en)
YU (1) YU42779B (en)
ZA (1) ZA818244B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6066099A (en) * 1983-09-21 1985-04-16 Hitachi Ltd Temperature balance control of multistage heat exchanger
CH681603A5 (en) * 1984-05-30 1993-04-30 Von Roll Ag
JPS61110897A (en) * 1984-11-06 1986-05-29 Toshiba Corp Flow rate control method of heat exchanger
DD234281B1 (en) * 1984-12-21 1989-06-21 Florin Stahl Walzwerk METHOD FOR PRESSURE WATER TREATMENT OF ROLLING STEEL PRODUCTS
KR101225251B1 (en) * 2010-09-29 2013-01-22 현대제철 주식회사 Apparatus for manufacturing high-strength steel bars in adjusting metallugical transformation and the method thereof
RU2583554C1 (en) * 2015-01-22 2016-05-10 Акционерное общество "Научно-исследовательский центр "Строительство" (АО "НИЦ "Строительство") Method for production of hardened reinforcing bar of periodic profile

Also Published As

Publication number Publication date
NO156903B (en) 1987-09-07
IN154221B (en) 1984-10-06
DD202309A5 (en) 1983-09-07
FI822426L (en) 1983-01-10
MX159859A (en) 1989-09-21
JPS6219488B2 (en) 1987-04-28
ES8401530A1 (en) 1983-12-01
NO822384L (en) 1983-01-10
AT375401B (en) 1984-08-10
ATA265382A (en) 1983-12-15
SE8204207L (en) 1983-01-10
CH639137A5 (en) 1983-10-31
BR8108179A (en) 1983-04-12
NO156903C (en) 1987-12-16
KR840000653A (en) 1984-02-25
JPS589920A (en) 1983-01-20
AU536703B2 (en) 1984-05-17
LU84263A1 (en) 1983-02-07
DK455481A (en) 1983-01-10
SE462853B (en) 1990-09-10
ES513811A0 (en) 1983-12-01
AU7862481A (en) 1983-01-13
GR77249B (en) 1984-09-11
FI72748C (en) 1987-07-10
YU149782A (en) 1985-04-30
IE53019B1 (en) 1988-05-11
ZA818244B (en) 1983-04-27
DK152691B (en) 1988-04-18
FI72748B (en) 1987-03-31
SE8204207D0 (en) 1982-07-07
CA1201960A (en) 1986-03-18
DK152691C (en) 1988-08-29
KR870001090B1 (en) 1987-06-04
BE889575A (en) 1982-01-11
FI822426A0 (en) 1982-07-08
YU42779B (en) 1988-12-31

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Legal Events

Date Code Title Description
MM4A Patent lapsed