DK0469410T3 - Process and plant for increasing the strength of concrete steels - Google Patents

Process and plant for increasing the strength of concrete steels

Info

Publication number
DK0469410T3
DK0469410T3 DK91112149.9T DK91112149T DK0469410T3 DK 0469410 T3 DK0469410 T3 DK 0469410T3 DK 91112149 T DK91112149 T DK 91112149T DK 0469410 T3 DK0469410 T3 DK 0469410T3
Authority
DK
Denmark
Prior art keywords
reinforcing bars
bending
lengthening
subjected
adjusted
Prior art date
Application number
DK91112149.9T
Other languages
Danish (da)
Inventor
Robert Thiesbuerger
Wolfgang Preiss
Original Assignee
Hanse Montan
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 Hanse Montan filed Critical Hanse Montan
Application granted granted Critical
Publication of DK0469410T3 publication Critical patent/DK0469410T3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F9/00—Straining wire
    • B21F9/005—Straining wire to affect the material properties of the wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
    • B21D3/05—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes rectangular to the path of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F9/00—Straining wire
    • 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/10—Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars
    • C21D7/105—Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars of concrete reinforcing bars

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Wire Processing (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Heat Treatment Of Steel (AREA)
  • Artificial Fish Reefs (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Abstract

Method for hardening reinforcing bars for concrete, in particular weldable reinforcing bars produced by hot rolling, the reinforcing bars being subjected to cold mechanical deformation in a continuous process and thereby adjusted, inter alia, in respect of their yield strength and breaking elongation. The reinforcing bars are subjected to multi-stage bending, without torsion, around a bending roller (5, 6) in various equidistant, mutually offset bending planes and thereby cold work/hardened in the bending planes along a plurality of superposed axes. In the process, a lengthening of the reinforcing rods is achieved. The yield strength and breaking elongation are adjusted by the extent of this lengthening. A device for carrying out the method is also disclosed. <IMAGE>
DK91112149.9T 1990-08-03 1991-07-20 Process and plant for increasing the strength of concrete steels DK0469410T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4024653A DE4024653C1 (en) 1990-08-03 1990-08-03

Publications (1)

Publication Number Publication Date
DK0469410T3 true DK0469410T3 (en) 1994-07-11

Family

ID=6411580

Family Applications (1)

Application Number Title Priority Date Filing Date
DK91112149.9T DK0469410T3 (en) 1990-08-03 1991-07-20 Process and plant for increasing the strength of concrete steels

Country Status (5)

Country Link
EP (1) EP0469410B1 (en)
AT (1) ATE106287T1 (en)
DE (2) DE4024653C1 (en)
DK (1) DK0469410T3 (en)
ES (1) ES2054405T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107604139A (en) * 2017-11-06 2018-01-19 舟山市7412工厂 The curing system and its method for curing of a kind of raw metal

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE626756C (en) * 1934-07-28 1936-03-02 Alfred Varley Sims Automatic valve
DE746251C (en) * 1941-05-13 1945-01-08 Kohle- Und Eisenforschung Gmbh Process for increasing the number of bends and twists of steel wires that have been spun in operation
DE1533992A1 (en) * 1967-05-16 1970-02-19 Rehm Gallus Process for increasing the elastic limit, the yield strength and, if necessary, the breaking strength of steel by cold deformation
AT339852B (en) * 1973-10-19 1977-11-10 Voest Ag DEVICE FOR CONTINUOUS COLD STRENGTHENING OF ROLLED METALLIC ROLLED, ESPECIALLY STEEL WIRE
US4216666A (en) * 1978-09-18 1980-08-12 Extruded Metals Method of relieving stress in extruded sections
EP0194478B1 (en) * 1985-03-08 1989-12-06 M.E.P. Macchine Elettroniche Piegatrici S.p.A. Device for straightening rods or wire without relative rotation of succeeding elements of material about the longitudinal axis
DE3919382A1 (en) * 1989-06-14 1991-01-03 Kt Baustahl Vertrieb DEVICE FOR INCREASING THE STRETCH LIMIT OF HOT ROLLED WIRE

Also Published As

Publication number Publication date
DE4024653C1 (en) 1991-07-25
EP0469410B1 (en) 1994-06-01
EP0469410A1 (en) 1992-02-05
ATE106287T1 (en) 1994-06-15
DE9106386U1 (en) 1991-08-08
ES2054405T3 (en) 1994-08-01

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