EP0849369A3 - Process for heat treatment of steel wire or bar winding onto coils - Google Patents

Process for heat treatment of steel wire or bar winding onto coils Download PDF

Info

Publication number
EP0849369A3
EP0849369A3 EP97122112A EP97122112A EP0849369A3 EP 0849369 A3 EP0849369 A3 EP 0849369A3 EP 97122112 A EP97122112 A EP 97122112A EP 97122112 A EP97122112 A EP 97122112A EP 0849369 A3 EP0849369 A3 EP 0849369A3
Authority
EP
European Patent Office
Prior art keywords
winding
cooling
rolling stock
rolling
heat treatment
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.)
Withdrawn
Application number
EP97122112A
Other languages
German (de)
French (fr)
Other versions
EP0849369A2 (en
Inventor
Meinert Meyer
Hans-Georg Dr. Hartung
Wolfgang Roloff
Paul-Josef Dr. Mauk
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.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag 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 SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0849369A2 publication Critical patent/EP0849369A2/en
Publication of EP0849369A3 publication Critical patent/EP0849369A3/en
Withdrawn legal-status Critical Current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
    • 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
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C21D9/5732—Continuous furnaces for strip or wire with cooling of wires; of 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
    • 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

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 Strip Materials And Filament Materials (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Metal Rolling (AREA)

Abstract

Beim Wickeln oder Windungslegen von Stabstahl oder Draht, bei dem das Walzgut aus der Walzhitze in einem Korb gehaspelt oder mit Hilfe eines Windungslegers in Form von Windungen auf ein Fördermittel abgelegt und am Ende dieses Fördermittels über einen Dorn zu einem Bund gesammelt wird, dabei abkühlt und nach dem Wickeln oder Legen in Windungen weiter gekühlt wird, wobei sich das Walzgut aus der Austenitphase in die Ferrit- bzw. Perlitphase umwandelt, ergeben sich durch anlagenbedingte unterschiedliche Abkühlbedingungen, die sich nur durch einen entsprechend großen anlagenspezifischen Aufwand vermeiden lassen, Festigkeitsunterschiede durch unterschiedliche Gefügeausbildungen. Gemäß der Erfindung wird vorgeschlagen, bereits vor dem Wickeln oder Windungslegen die Kühlung aus der Walzhitze bis in den Umwandlungsbereich zu führen, der durch die Ar3- bzw. Ar1-Linie gekennzeichnet ist, wodurch sich das Walzgut gleichmäßig über seine gesamte Walzgutlänge umwandelt und Festigkeitsschwankungen vermieden werden.When winding or winding steel bars or wire, in which the rolling stock is coiled from the rolling heat in a basket or deposited with the help of a winding layer in the form of turns on a conveyor and at the end of this conveyor is collected via a mandrel to form a bundle, thereby cooling and cooling after winding or laying in turns, whereby the rolling stock converts from the austenite phase to the ferrite or pearlite phase, resulting in different cooling conditions caused by the system, which can only be avoided by a correspondingly large system-specific effort, differences in strength due to different microstructures . According to the invention, it is proposed to carry out the cooling from the rolling heat into the conversion area, which is characterized by the Ar 3 or Ar 1 line, before the winding or winding, whereby the rolling stock is converted evenly over its entire length of rolling stock and Fluctuations in strength can be avoided.

EP97122112A 1996-12-19 1997-12-16 Process for heat treatment of steel wire or bar winding onto coils Withdrawn EP0849369A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19653062 1996-12-19
DE19653062A DE19653062A1 (en) 1996-12-19 1996-12-19 Ferritic winding of wire or bar steel

Publications (2)

Publication Number Publication Date
EP0849369A2 EP0849369A2 (en) 1998-06-24
EP0849369A3 true EP0849369A3 (en) 1998-07-08

Family

ID=7815392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97122112A Withdrawn EP0849369A3 (en) 1996-12-19 1997-12-16 Process for heat treatment of steel wire or bar winding onto coils

Country Status (3)

Country Link
US (1) US5902422A (en)
EP (1) EP0849369A3 (en)
DE (1) DE19653062A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19962801A1 (en) 1999-12-23 2001-06-28 Sms Demag Ag Process for heat treating wire
US7055244B2 (en) * 2002-03-14 2006-06-06 Anand Waman Bhagwat Method of manufacturing flat wire coil springs to improve fatigue life and avoid blue brittleness
US20040025987A1 (en) * 2002-05-31 2004-02-12 Bhagwat Anand W. High carbon steel wire with bainitic structure for spring and other cold-formed applications
JP4088220B2 (en) * 2002-09-26 2008-05-21 株式会社神戸製鋼所 Hot-rolled wire rod with excellent wire drawing workability that can omit heat treatment before wire drawing
CN102534175A (en) * 2012-02-15 2012-07-04 铃木加普腾钢丝（苏州）有限公司 Steel wire tempering process

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE698054A (en) * 1966-05-07 1967-10-16
DE1433760A1 (en) * 1962-08-24 1970-01-22 Morgan Construction Co Use of step cooling for tempering rolled steel and steel wire produced in the process
DE2414015A1 (en) * 1966-11-05 1974-10-03 Wean United Inc METHOD AND DEVICE FOR CONTROLLING THE COOLING TEMPERATURE OF HOT STEEL WIRE
GB1549125A (en) * 1976-06-09 1979-08-01 Thaelmann Schwermaschbau Veb Method of and an apparatus for the patenting of wire
EP0058324A2 (en) * 1981-02-14 1982-08-25 Sms Schloemann-Siemag Aktiengesellschaft Device for the controlled cooling of wire at rolling temperature

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS586936A (en) * 1981-07-06 1983-01-14 Sumitomo Metal Ind Ltd Production of hot-rolled high-tensile steel plate for working

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1433760A1 (en) * 1962-08-24 1970-01-22 Morgan Construction Co Use of step cooling for tempering rolled steel and steel wire produced in the process
BE698054A (en) * 1966-05-07 1967-10-16
DE2414015A1 (en) * 1966-11-05 1974-10-03 Wean United Inc METHOD AND DEVICE FOR CONTROLLING THE COOLING TEMPERATURE OF HOT STEEL WIRE
GB1549125A (en) * 1976-06-09 1979-08-01 Thaelmann Schwermaschbau Veb Method of and an apparatus for the patenting of wire
EP0058324A2 (en) * 1981-02-14 1982-08-25 Sms Schloemann-Siemag Aktiengesellschaft Device for the controlled cooling of wire at rolling temperature

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BRUNE E ET AL: "COMPUTERSIMULATION DES WALZPROZESSES ZUR QUALITATS-OPTIMIERUNG AN EINER FEINSTAHL- UND DRAHTSTRASSE", STAHL UND EISEN, vol. 114, no. 11, 7 November 1994 (1994-11-07), pages 87 - 92, 160, XP000484932 *

Also Published As

Publication number Publication date
DE19653062A1 (en) 1998-06-25
US5902422A (en) 1999-05-11
EP0849369A2 (en) 1998-06-24

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