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GB1392269A - Rolled steel rod or bar - Google Patents

Rolled steel rod or bar

Info

Publication number
GB1392269A
GB1392269A GB5052873A GB5052873A GB1392269A GB 1392269 A GB1392269 A GB 1392269A GB 5052873 A GB5052873 A GB 5052873A GB 5052873 A GB5052873 A GB 5052873A GB 1392269 A GB1392269 A GB 1392269A
Authority
GB
United Kingdom
Prior art keywords
steel rod
oct
surface layer
bar
rolled steel
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
GB5052873A
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.)
METALLURG CT CENTRE RECH
Centre de Recherches Metallurgiques CRM ASBL
Original Assignee
METALLURG CT CENTRE RECH
Centre de Recherches Metallurgiques CRM ASBL
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 METALLURG CT CENTRE RECH, Centre de Recherches Metallurgiques CRM ASBL filed Critical METALLURG CT CENTRE RECH
Publication of GB1392269A publication Critical patent/GB1392269A/en
Expired 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
    • 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
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/002—Bainite
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite
    • 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
    • C21D2221/00—Treating localised areas of an article
    • C21D2221/10—Differential treatment of inner with respect to outer regions, e.g. core and periphery, respectively

Landscapes

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

Abstract

1392269 Heat treating steel rod CENTRE DE RECHERCHES METALLURGIQUES - CENTRUM VOOR RESEARCH IN DE METALLURGIE 31 Oct 1973 [31 Oct 1972] 50528/73 Headings C7A and C7N Rod leaving the finishing stand of hot mill is superficially quenched so that the core remains austenitic preferably having a temperature of 850‹C at the end of the quenching step, while the surface layer is transformed to austenite or bainite; it is then allowed to cool at such a rate that the core transforms to ferrite and carbides while the transferred heat tempers the surface layer. Quenching may be by water or a solution or suspension of a mineral salt or surface active agent.
GB5052873A 1972-10-31 1973-10-31 Rolled steel rod or bar Expired GB1392269A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE790867 1972-10-31

Publications (1)

Publication Number Publication Date
GB1392269A true GB1392269A (en) 1975-04-30

Family

ID=3860370

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5052873A Expired GB1392269A (en) 1972-10-31 1973-10-31 Rolled steel rod or bar

Country Status (9)

Country Link
US (1) US3926689A (en)
JP (1) JPS49134513A (en)
BE (1) BE790867A (en)
FR (1) FR2204693B1 (en)
GB (1) GB1392269A (en)
IT (1) IT1004614B (en)
LU (1) LU68624A1 (en)
MY (1) MY8800139A (en)
NL (1) NL168001C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2350402A1 (en) * 1976-05-08 1977-12-02 Aeg Elotherm Gmbh THERMAL TREATMENT OF THICK WALL STEEL TUBES

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL170159C (en) * 1973-06-04 1982-10-01 Estel Hoogovens Bv METHOD FOR MANUFACTURING WELDABLE LOW CARBON STEEL MATERIAL BY CONTROLLED COOLING
DD106661A1 (en) * 1973-09-24 1974-06-20
BE839080A (en) * 1976-03-01 1976-07-01 PROCESS FOR MANUFACTURING REINFORCING BARS
IT1107284B (en) * 1977-05-13 1985-11-25 Centre Rech Metallurgique PROCEDURE FOR THE PRODUCTION OF IMPROVED QUALITY STEEL PROFILES
GB1587215A (en) * 1977-11-03 1981-04-01 British Steel Corp Manufacture of welded steel mesh
DE2844331A1 (en) * 1977-10-14 1979-04-19 Centre Rech Metallurgique METHOD FOR TREATMENT OF TUBULAR STEEL PROFILES
US4242153A (en) * 1978-10-16 1980-12-30 Morgan Construction Company Methods for hot rolling and treating rod
DE2900271C2 (en) * 1979-01-05 1984-01-26 Stahlwerke Peine-Salzgitter Ag, 3150 Peine Weldable reinforcing steel and process for its manufacture
US4527408A (en) * 1983-10-31 1985-07-09 Morgan Construction Company Method and Apparatus for cooling and handling hot rolled steel rod in direct sequence with a high speed rolling operation
DE3431008C2 (en) * 1984-08-23 1986-10-16 Dyckerhoff & Widmann AG, 8000 München Heat treatment of hot rolled bars or wires
US4786338A (en) * 1985-10-31 1988-11-22 Norio Anzawa Method for cooling rolled steels
US4824492A (en) * 1987-12-23 1989-04-25 Chaparral Steel Company Method for producing a precipitation hardenable martensitic low alloy steel forging
DD268258A1 (en) * 1988-01-08 1989-05-24 Florin Stahl Walzwerk HOEHERFESTER STAHL, ESPECIALLY CONCRETE STEEL BZW. DRAWERIVORMATERIAL, WITH IMPROVED MATERIAL PROPERTIES AND BETTER PROCESSABILITY
BE1005964A6 (en) * 1992-06-29 1994-04-05 Centre Rech Metallurgique Protection method of hot rolled steel product.
US6330903B1 (en) * 1997-02-05 2001-12-18 Steve Weinreich Mechanism for constant balance with method for manufacture of variable pitch screw
US8122580B2 (en) * 2008-06-26 2012-02-28 American Railcar Industries, Inc. Methods for manufacturing an axle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111436A (en) * 1961-01-17 1963-11-19 Mills James Ltd Method of hardening plain carbon and low alloy steels
BE762838A (en) * 1971-02-11 1971-08-11 Centre Rech Metallurgique PROCESS AND DEVICE FOR THE MANUFACTURING OF CONCRETE RODS,
US3756870A (en) * 1971-05-10 1973-09-04 Park Ohio Industries Inc Induction heating method of case hardening carbon steel rod

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2350402A1 (en) * 1976-05-08 1977-12-02 Aeg Elotherm Gmbh THERMAL TREATMENT OF THICK WALL STEEL TUBES

Also Published As

Publication number Publication date
JPS49134513A (en) 1974-12-25
NL7314593A (en) 1974-05-02
IT1004614B (en) 1976-07-20
MY8800139A (en) 1988-12-31
BE790867A (en) 1973-02-15
LU68624A1 (en) 1973-12-27
NL168001B (en) 1981-09-16
FR2204693B1 (en) 1976-06-18
NL168001C (en) 1982-02-16
US3926689A (en) 1975-12-16
FR2204693A1 (en) 1974-05-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19931030