EP0185341A3 - Method of increasing the strength of reinforcing steels - Google Patents

Method of increasing the strength of reinforcing steels Download PDF

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Publication number
EP0185341A3
EP0185341A3 EP85116005A EP85116005A EP0185341A3 EP 0185341 A3 EP0185341 A3 EP 0185341A3 EP 85116005 A EP85116005 A EP 85116005A EP 85116005 A EP85116005 A EP 85116005A EP 0185341 A3 EP0185341 A3 EP 0185341A3
Authority
EP
European Patent Office
Prior art keywords
reinforcing steels
strength
increasing
temperature
transformation
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
EP85116005A
Other languages
German (de)
Other versions
EP0185341B2 (en
EP0185341A2 (en
EP0185341B1 (en
Inventor
Ernst Dr.-Ing. Gunther
Klaus Dipl.-Ing. Fischer
Jochen Dipl.-Ing. Schmidt
Norbert Dr.-Ing. Brennecke
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.)
SKET Walzwerkstechnik GmbH
Original Assignee
VEB STAHL- und WALZWERK BRANDENBURG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=5563382&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0185341(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by VEB STAHL- und WALZWERK BRANDENBURG filed Critical VEB STAHL- und WALZWERK BRANDENBURG
Priority to AT85116005T priority Critical patent/ATE67793T1/en
Publication of EP0185341A2 publication Critical patent/EP0185341A2/en
Publication of EP0185341A3 publication Critical patent/EP0185341A3/en
Application granted granted Critical
Publication of EP0185341B1 publication Critical patent/EP0185341B1/en
Publication of EP0185341B2 publication Critical patent/EP0185341B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Landscapes

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

Abstract

The invention aims to reduce the use of alloys for the manufacture of reinforcing steels of higher strength, in particular of ribbed reinforcing steels which are produced as rolled wire in the form of ringed bundles on continuous high-output wire mills. A process for increasing the strength, in particular the yield strength, of reinforcing steels is to be developed while simultaneously ensuring good weldability and good plastic properties. According to the invention, the rolled wire is deformed in the end phase of the hot-rolling process within a preset time by a defined change in shape (reduction in cross-section) and, immediately after the deformation, very rapidly quenched to a temperature below the austenite recrystallisation temperature, but above the Ar1 transformation temperature, so that there is a very fine or incompletely recrystallised austenite structure at the start of the gamma - alpha -transformation.
EP85116005A 1984-12-17 1985-12-16 Method of increasing the strength of reinforcing steels Expired - Lifetime EP0185341B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85116005T ATE67793T1 (en) 1984-12-17 1985-12-16 METHOD OF INCREASING THE STRENGTH OF REINFORCING STEELS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DD270878 1984-12-17
DD84270878A DD231577B1 (en) 1984-12-17 1984-12-17 METHOD FOR INCREASING THE STRENGTH OF REINFORCING STEELS

Publications (4)

Publication Number Publication Date
EP0185341A2 EP0185341A2 (en) 1986-06-25
EP0185341A3 true EP0185341A3 (en) 1988-10-05
EP0185341B1 EP0185341B1 (en) 1991-09-25
EP0185341B2 EP0185341B2 (en) 1999-02-10

Family

ID=5563382

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85116005A Expired - Lifetime EP0185341B2 (en) 1984-12-17 1985-12-16 Method of increasing the strength of reinforcing steels

Country Status (4)

Country Link
EP (1) EP0185341B2 (en)
AT (1) ATE67793T1 (en)
DD (1) DD231577B1 (en)
DE (1) DE3584235D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT501551B1 (en) * 2005-03-07 2008-03-15 Evg Entwicklung Verwert Ges METHOD AND APPARATUS FOR PRODUCING HIGH-DUCTILE STEEL WIRE FROM HOT-ROLLED ROLLING WIRE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1433757A1 (en) * 1961-01-23 1968-11-28 Matuschka Dr Mont Dipl Ing Ber Fine-grain structural steel and process for its manufacture
DD149943A1 (en) * 1980-03-31 1981-08-05 Ernst Guenther PROCESS FOR PRODUCING HIGH-WELD WELDABLE CONCRETE STEELS
DE2900271C2 (en) * 1979-01-05 1984-01-26 Stahlwerke Peine-Salzgitter Ag, 3150 Peine Weldable reinforcing steel and process for its manufacture

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1433757A1 (en) * 1961-01-23 1968-11-28 Matuschka Dr Mont Dipl Ing Ber Fine-grain structural steel and process for its manufacture
DE2900271C2 (en) * 1979-01-05 1984-01-26 Stahlwerke Peine-Salzgitter Ag, 3150 Peine Weldable reinforcing steel and process for its manufacture
DD149943A1 (en) * 1980-03-31 1981-08-05 Ernst Guenther PROCESS FOR PRODUCING HIGH-WELD WELDABLE CONCRETE STEELS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
STEEL IN THE USSR, Band 7, Nr. 8, August 1977, Seiten 464-466, London, GB; V. Y. SAVENKOV et al.: "Quenching and tempering of reinforcing steel rod at krivoi rog works" *

Also Published As

Publication number Publication date
DE3584235D1 (en) 1991-10-31
ATE67793T1 (en) 1991-10-15
EP0185341B2 (en) 1999-02-10
EP0185341A2 (en) 1986-06-25
EP0185341B1 (en) 1991-09-25
DD231577A1 (en) 1986-01-02
DD231577B1 (en) 1987-09-09

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