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GB1452419A - Steel wire of controlled microstructure and its production - Google Patents

Steel wire of controlled microstructure and its production

Info

Publication number
GB1452419A
GB1452419A GB3955674A GB3955674A GB1452419A GB 1452419 A GB1452419 A GB 1452419A GB 3955674 A GB3955674 A GB 3955674A GB 3955674 A GB3955674 A GB 3955674A GB 1452419 A GB1452419 A GB 1452419A
Authority
GB
United Kingdom
Prior art keywords
steel wire
temperature
production
sept
cooling
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
GB3955674A
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
Priority claimed from DE19732345738 external-priority patent/DE2345738C2/en
Application filed by Stahlwerke Pein Salzgitter AG filed Critical Stahlwerke Pein Salzgitter AG
Publication of GB1452419A publication Critical patent/GB1452419A/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
    • 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
    • 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
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/009—Pearlite
    • 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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

1452419 Heat-treating steel wire STAHLWERKE PEINE-SALZGITTER AG 11 Sept 1974 [11 Sept 1973] 39556/74 Headings C7A and C7N Steel wire is produced with a pearlitic core and a surface layer of fully tempered martensite occupying not more than 33% of the cross-sectional area. Preferably the core contains not more than 1% of ferrite. The structure may be obtained by adjusting the temperature of the wire leaving the hot-rolling mill to 850-910‹C, and then water-cooling it in a multi-stage operation to below the martensite start temperature within 0À2 second, followed by coiling and cooling in the atmosphere. In a particular embodiment a steel containing in percentage by weight;- leaves the rolling mill with a surface temperature of 860‹C and is cooled to a coiling temperature of 500‹C in 0.2 sees.
GB3955674A 1973-09-11 1974-09-11 Steel wire of controlled microstructure and its production Expired GB1452419A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732345738 DE2345738C2 (en) 1973-09-11 Steel wire and process for its manufacture

Publications (1)

Publication Number Publication Date
GB1452419A true GB1452419A (en) 1976-10-13

Family

ID=5892240

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3955674A Expired GB1452419A (en) 1973-09-11 1974-09-11 Steel wire of controlled microstructure and its production

Country Status (5)

Country Link
AT (1) AT368774B (en)
BE (1) BE819463A (en)
FR (1) FR2243260B1 (en)
GB (1) GB1452419A (en)
IT (1) IT1021640B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2900271C2 (en) * 1979-01-05 1984-01-26 Stahlwerke Peine-Salzgitter Ag, 3150 Peine Weldable reinforcing steel and process for its manufacture

Also Published As

Publication number Publication date
BE819463A (en) 1974-12-31
IT1021640B (en) 1978-02-20
DE2345738B1 (en) 1974-07-11
FR2243260B1 (en) 1976-10-22
AT368774B (en) 1982-11-10
ATA671374A (en) 1978-02-15
FR2243260A1 (en) 1975-04-04

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414B Case decided by the comptroller ** grants allowed (sect. 14/1949)
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee