EP0738361B1 - Acier d'armature lamine a froid et son procede de production - Google Patents

Acier d'armature lamine a froid et son procede de production Download PDF

Info

Publication number
EP0738361B1
EP0738361B1 EP95906956A EP95906956A EP0738361B1 EP 0738361 B1 EP0738361 B1 EP 0738361B1 EP 95906956 A EP95906956 A EP 95906956A EP 95906956 A EP95906956 A EP 95906956A EP 0738361 B1 EP0738361 B1 EP 0738361B1
Authority
EP
European Patent Office
Prior art keywords
rod
reinforcing steel
recesses
rolled
cold
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 - Lifetime
Application number
EP95906956A
Other languages
German (de)
English (en)
Other versions
EP0738361B2 (fr
EP0738361A1 (fr
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.)
Institut fur Stahlbeton Bewehrung Ev
Original Assignee
Institut fur Stahlbeton Bewehrung Ev
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=6507949&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0738361(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Institut fur Stahlbeton Bewehrung Ev filed Critical Institut fur Stahlbeton Bewehrung Ev
Publication of EP0738361A1 publication Critical patent/EP0738361A1/fr
Application granted granted Critical
Publication of EP0738361B1 publication Critical patent/EP0738361B1/fr
Publication of EP0738361B2 publication Critical patent/EP0738361B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/163—Rolling or cold-forming of concrete reinforcement bars or wire ; Rolls therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
    • E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete

Definitions

  • Reinforcing steel (prestressing steel) for the reinforcement of steel (prestressed) concrete has ribs in order to achieve a sufficient bond between the steel and the concrete. This ensures the power transmission between the steel and the concrete and vice versa so that short anchoring or transmission lengths are achieved in the state of use.
  • reinforcing bars in particular cold-formed reinforcing bars, such as those e.g. used for reinforcing steel mesh or reinforcing steel in the ring.
  • These include e.g. new insights into non-linear design methods in reinforced concrete construction.
  • the combination of reinforcing steel has so far only been considered in the elastic range of the stress-strain line of the steel.
  • the use of non-linear design also includes the composite effect in the plastic area of steel (DE-A1-4011486). It has been shown here that a bond that is too “hard” on ribs on the concrete crack releases too little steel expansion. The aim is to achieve a bond that allows the previous structural regulations in use, but is softer in the plastic area of the stress-strain line of the reinforcing steel.
  • a large part of the reinforcing steel is produced by hot or cold working as reinforcing steel in the ring and processed into steel bars or reinforcing steel mesh.
  • it In order to shape the steel into a form that can serve as reinforcement, it must be straightened using suitable machines. Ribbed steels are always out of round. Furthermore, the ribs are usually heavily removed during the straightening process. The ribs on the circumference of the bar also ignite considerable noise during the straightening process. In the case of reinforcing steels that are manufactured in the ring, the aim is to improve the straightening properties and reduce the noise during straightening.
  • Reinforcing steel mesh is welded in systems that run at up to 120 cycles / min. Achieving consistently good welded joints is only possible if the out-of-roundness caused by the ribs is kept as small as possible. This applies especially to the welding of double bars. In view of this, rods with a surface that come as close as possible to smooth round steel should be aimed for.
  • a reinforcing steel of this type is known from DE-AS 10 84 464.
  • This document describes a reinforcement wire or rod, in particular for prestressed concrete, the surface of which has regularly repeated recesses on both sides, the recesses being elliptical and taking up almost half the circumference of the rod.
  • the depressions are separated in the area of their short axis by narrow ridges that are oblique to the rod axis. Similar to bevelled ribs, these beads are formed by milling in the embossing roll, into which the material is displaced during rolling.
  • the flanks of the depressions are formed symmetrically and the flank angle is limited to 50 °.
  • FR-A-1 207 928 discloses a reinforcing steel in which a surface shape with a smooth surface is aimed at in order to improve the weldability when manufacturing reinforcing steel mats. Three or more rows of shallow depressions of low constant depth are rolled into a rectangular or parallelogram-like shape in a reinforcing steel of round cross-section.
  • a method for producing a ribbed reinforcing steel in which a round wire rod is converted in a cold drawing process with a cross-section reduction of approximately 20% into a round steel of reduced diameter.
  • the round steel is then rolled into a cross section in the form of a triangle with rounded corners, and indentations are rolled into the rounded corners to form the ribs.
  • the cold deformation for producing the ribs is of the order of 20%.
  • the invention has for its object to form the surface shape of a reinforcing steel according to the preamble of claim 1 so that despite a lower deformation effort, the better ductility parameters Agt and Rm / Re, a sufficient bond is guaranteed. If plastic deformations of the reinforcing steel are included (non-linear design), a soft bond should large relative shifts between steel and concrete allows. At the same time, the surface shape of the reinforcing steel should, if possible, be adjusted to that of a round rod with a smooth surface with a view to good straightening ability and improved weldability. With a view to a high fatigue strength, notch stresses should be kept as low as possible. Furthermore, a method for producing a reinforcing steel with the properties mentioned is to be specified.
  • the reinforcing steel according to the invention is characterized by the features of claim 1.
  • Advantageous embodiments of this reinforcing steel can be found in claims 2 to 12.
  • the method according to the invention is characterized by the features of claim 13.
  • Advantageous refinements of the method can be found in the remaining claims.
  • a graduated "failure mode" is achieved through the formation of the depressions with different depths and through the formation of projections or depressions in the bottom surface of the depressions.
  • the concrete bracket shears off on a large recess, it shears off on a small recess, thereby opening up an expansion path.
  • a protrusion or trough is formed in the bottom surface of a recess. This mechanism enables larger ones Relative shifts between steel and concrete.
  • the reinforcing steel according to the invention is therefore particularly suitable as a reinforcement element for reinforced concrete components that are dimensioned using local plastic deformations of the reinforcement.
  • the boundary line of the depressions is formed from arcs and straight sections in which notch stresses can be concentrated are avoided, and the flanks of the depressions are rounded and merge into the floor surfaces, so that stresses on the reinforcing steel that affect the fatigue strength are largely avoided.
  • the surface portions of the smooth surface are enlarged compared to that of the depressions in comparison to, for example, a round shape of the depression with a given composite effect, whereby straightening ability and weldability are improved.
  • the depressions of adjacent longitudinal rows should be offset from one another in the longitudinal direction of the rod.
  • a multi-stage process is used to produce the rolled reinforcing steel.
  • a wire rod is rolled into a round bar in a first cold-forming process with a cross-sectional reduction of 8 to 15%, and the recesses are rolled in a further cold-forming process with a cross-sectional reduction of 2 to 7%.
  • the first deformation process two or even three cold deformation processes, each with a correspondingly smaller cross-sectional reduction, can be provided, in which the rod is brought to a round cross-section before the depressions are rolled in.
  • the section of a reinforcing steel shown in the development in FIG. 1 has three longitudinal rows 1, 2, 3 of depressions 4.
  • the longitudinal rows are evenly distributed over the circumference of the bar.
  • the depressions of adjacent longitudinal rows are offset from one another in the longitudinal direction of the rod.
  • the degree of displacement corresponds to approximately one third of the distance between two adjacent depressions in a longitudinal row.
  • the rod surface 5 is smooth, i.e. it corresponds to that of a smooth round rod.
  • the boundary line of a depression is formed by circular arcs 6 and 7 which have different radii and are each arranged axially symmetrically with respect to the depression 4.
  • the arcs 6 with a smaller radius are symmetrical to the axis of symmetry 8 and the arcs with a larger radius are arranged symmetrically to the axis of symmetry 9.
  • the axis of symmetry 9 the circular arc 7 with a larger radius runs in the exemplary embodiment according to FIG. 1 at 90 ° to the rod axis, ie transverse to the rod axis, the axis of symmetry 8 runs parallel to the rod axis.
  • the proportion of the total area of the depressions to the total area of the rod is approximately 40%.
  • FIG. 2 shows the cross section of a depression in the longitudinal direction of the rod. From this it can be seen that the depression is flat, rolled into the rod surface 5 at a constant depth t and is delimited by steep flanks 10. The flanks 10 merge into the bottom surface 12 via roundings 11 with a small radius.
  • the surface design of the reinforcing steel according to the invention is for design methods in which locally plastic deformations of the reinforcement, i.e. a joint rotation is used, more suitable than rods with ribs or ridges applied to the surface, since a "soft" bond is made possible by the surface design according to the invention.
  • FIG. 3 shows a section of a row of ribs of a further embodiment of a reinforcing steel according to the invention.
  • oval depressions are arranged obliquely to the rod axis.
  • the angle relative to the rod axis is labeled ⁇ and should be in the range between 60 ° and 90 °.
  • An angle ⁇ 90 ° corresponds to the embodiment according to FIG. 1.
  • B means the extent of the depression in the longitudinal direction of the rod, measured in the middle of the transverse extent D, i.e. measured along the center line of the relevant longitudinal row of depressions.
  • parameter s i.e. the distance between the boundary lines of adjacent depressions in the longitudinal direction of the rod.
  • the method according to the invention for producing the reinforcing steel described differs from the known methods in that a round wire rod is first cold-rolled into a round bar in a first cold-forming process and the shallow depressions are rolled in in a further cold-forming process.
  • the first cold forming process which can also be divided into two or three cold forming processes, primarily serves to increase the strength of the reinforcing steel. Depending on the starting material - this can be wire rods 380 to 420 of BSTM quality - a cross-sectional deformation of 10 to 20% will be required here, which can be reduced accordingly when dividing into 2 or 3 cold-forming processes. If 3rd Cold forming processes are provided, these enable the production of an exact round cross section of the desired dimension. In the case of several cold-forming processes for the production of the round steel, the reduction in cross-section in the first deformation step should be greater than in the subsequent steps for the production of the round steel.
  • the cross-section of the round wire rod is initially evenly reduced by a cold path, stress peaks can be avoided in this deformation process.
  • the reduction in cross-section is limited to 7%, preferably 5%, the steel being stressed relatively evenly in this cold-forming operation by stamping only shallow depressions.
  • the total deformation, including the rolling in of the depressions, is carried out evenly and gently in two or more steps, which, in conjunction with the surface geometry of the reinforcing steel, enables excellent ductility parameters Agt and Rm / Re to be achieved. In conjunction with the softer bond that can be achieved through the surface geometry of the reinforcing steel, this leads to a particular suitability when using the reinforcing steel using local plastic deformations (joint rotation) of the reinforcement.
  • the process according to the invention was carried out in a first shaping process a smooth round wire rod with a diameter of 8.0 mm is rolled into a round wire with a diameter of 7.5 mm.
  • the cross-sectional reduction was 11%.
  • the result of the wire according to the invention is denoted by I u and I o, respectively, the indices u and o signifying below and above, respectively.
  • the comparison wire is designated II u or II o .
  • the extension path s, measured at the tension-free rod end, is plotted on the abscissa and the related bond stress is plotted on the ordinate.
  • the reinforcing steel according to the invention is thus characterized by a composite which is approximately the same size in use, but which permits considerably greater displacements.
  • the illustration corresponds to that of FIG. 2, ie it is a longitudinal section of the rod through the center of the depressions - the depressions are formed at different depths t1 and t2. If there is a load, the concrete bracket is sheared off in the area of the small depression t2 before it Area of the large depressions t1 is sheared off. As a result, a greater elongation value is released and a softer bond is achieved.
  • a graded "failure mode” is also achieved if the recesses 4 have different transverse dimensions D (see FIG. 3), measured perpendicular to the longitudinal axis of the rod between the tangents parallel to the longitudinal axis at the boundary line of the relevant recess.
  • FIGS. 6 and 7 which correspond to FIGS. 2 and 3, at least some of the depressions have projections 13.
  • troughs could also be provided within the bottom surface of the depressions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Heat Treatment Of Steel (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Metal Rolling (AREA)
  • Wire Processing (AREA)

Claims (15)

  1. Acier d'armature laminé à froid qui comporte des renfoncements (4) laminés dans une barre en acier d'une section transversale approximativement circulaire, lesquels sont répartis de façon régulière sous forme de 2 à 6, de préférence 3 rangées longitudinales sur la périphérie de la barre, et dans lequel la ligne de délimitation de chaque renfoncement dans le développé de l'acier d'armature est formée par des arcs de cercle (6, 7) de différents rayons qui sont agencés à symétrie axiale par rapport au renfoncement, caractérisé en ce que des renfoncements peu profonds (4) sont laminés dans la surface de barre (5), lesquels sont délimités respectivement par un flanc raide (10) qui enferme, au niveau de sa ligne de délimitation (6, 7) conjointement avec la tangente de la surface de barre, un angle (β) de 60° à 80°, et en ce que la profondeur (4) des renfoncements est déterminée par une réduction de section transversale de 2 à 7 % au maximum lors du laminage des renfoncements dans un acier de section transversale ronde.
  2. Acier d'armature selon la revendication 1, caractérisé en ce que la ligne de délimitation d'un renfoncement (4) est formée par deux arcs de cercle (7) en vis-à-vis l'un de l'autre présentant un rayon plus grand, et par deux arcs de cercle (6) en vis-à-vis l'un de l'autre reliant ceux-ci et présentant un rayon plus petit.
  3. Acier d'armature selon la revendication 2, caractérisé en ce que l'axe de symétrie (9) des arcs de cercle (7) présentant le rayon plus grand s'étend sous un angle de 60° à 90° par rapport à l'axe de barre.
  4. Acier d'armature selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'il est prévu trois rangées longitudinales (1, 2, 3) de renfoncements (4).
  5. Acier d'armature selon l'une quelconque des revendications 1 à 4, caractérisée en ce que les renfoncements (4) de rangées longitudinales voisines (1/2, 2/3, 3/1) sont décalés les uns par rapport aux autres en direction longitudinale de la barre.
  6. Acier d'armature selon l'une quelconque des revendications 1 à 5, caractérisé en ce que dans le développé de l'acier d'armature, la proportion de la surface totale des renfoncements (4) par rapport à la surface totale de la barre est de 20 % à 50 %.
  7. Acier d'armature selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les renfoncements (4) présentent différentes profondeurs (tl, t2) et/ou différentes extensions transversales (D), mesurées normalement par rapport à l'axe longitudinal entre les tangentes parallèles à l'axe longitudinal sur la ligne de délimitation.
  8. Acier d'armature selon l'une quelconque des revendications 1 à 7, caractérisée en ce que les renfoncements (4) sont pourvus de saillies (13) et/ou de creux dans leur surface de fond (12).
  9. Acier d'armature selon l'une quelconque des revendications 1 à 8, caractérisé en ce que dans une barre présentant deux à six rangées longitudinales de renfoncements, la taille et la distance des renfoncements sont déterminées comme suit :
    b =   (0,15 à 0,45) • ds
    D =   (1,12 à 1,42) • ds, pour n = 2
    =(0,6 à 0,90) • ds, pour n = 3
    = (0,3 à 0,65) • ds, pour n = 4
    = (0,1 à 0,35) • ds, pour n = 6
    B =   (0,30 à 0,85) • ds
    s =   (0,1 à 1,5) • ds
    t =   (0,025 à 0,08) • ds
    dans laquelle
    ds représente le diamètre nominal de la barre,
    D l'extension du renfoncement en direction périphérique de la barre, mesurée perpendiculairement par rapport à l'axe longitudinal entre les tangentes parallèles à l'axe longitudinal sur la ligne de délimitation,
    B l'extension du renfoncement en direction longitudinale de la barre, mesurée au milieu de l'extension transversale D,
    s la distance entre les lignes de délimitation des renfoncements voisins en direction longitudinale de la barre, mesurée au milieu de l'extension transversale D,
    b la distance entre les lignes de délimitation de rangées longitudinales voisines de renfoncements en direction transversale de la barre,
    t la profondeur du renfoncement, et
    n le nombre des rangées longitudinales de renfoncements.
  10. Acier d'armature selon la revendication 9, caractérisé en ce que la taille et la distance des renfoncements pour n = 3 sont déterminées comme suit :
    D ≈   0,75 • ds
    B ≈   0,72 • ds
    s ≈   0,25 • ds
    b ≈   0,80 • ds
    t ≈   0,06 • ds
  11. Acier d'armature selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la taille et la distance des renfoncements sont choisies de telle sorte que la surface nervurée respective fR de l'acier d'armature est comprise entre 0,02 et 0,07.
  12. Acier d'armature selon la revendication 11, caractérisé en ce que la surface nervurée respective fR est comprise entre 0,02 et 0,045.
  13. Procédé pour réaliser un acier d'armature laminé à froid selon l'une quelconque des revendications 1 à 12, dans lequel un fil de laminage est laminé en un acier rond dans au moins une première opération de déformation à froid avec une réduction de section transversale de 8 à 20 %, et dans lequel des renfoncements peu profonds (4) sont laminés dans une opération de déformation à froid finale, lesquels sont délimités par un flanc raide (10) qui enferme au niveau de sa ligne de délimitation un angle (β) de 60° à 80° conjointement avec la tangente de la surface de barre, et qui sont répartis sous forme de 2 à 6, de préférence 3 rangées longitudinales de façon régulière sur la périphérie de la barre, et dans lequel le laminage des renfoncements (4) s'effectue avec une réduction de section transversale de 2 à 7 %, et la ligne de délimitation de chaque renfoncement dans le développé de l'acier d'armature est formée par des arcs de cercle présentant différents rayons, qui sont agencés à symétrie axiale par rapport au renfoncement.
  14. Procédé selon la revendication 13, caractérisé en ce que l'on prévoit, à la place de la première opération de déformation à froid, deux ou trois opérations de déformation à froid, dans lesquelles le fil de laminage est laminé en un acier rond, avec une réduction de section transversale totale de 20 % au maximum.
  15. Procédé selon l'une ou l'autre des revendications 13 ou 14, caractérisé en ce que l'analyse de la fonte du fil de laminage contient :
    0,04 à 0,14 de C
    0,35 à 0,70 de Mn
    0,20 à 0,30 de Si,
    ainsi que des éléments d'alliage et impuretés habituelles, le reste étant du fer.
EP95906956A 1994-01-14 1995-01-16 Acier d'armature lamine a froid et son procede de production Expired - Lifetime EP0738361B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4400974 1994-01-14
DE4400974A DE4400974A1 (de) 1994-01-14 1994-01-14 Betonstahl
PCT/EP1995/000154 WO1995019480A1 (fr) 1994-01-14 1995-01-16 Acier d'armature lamine a froid et son procede de production

Publications (3)

Publication Number Publication Date
EP0738361A1 EP0738361A1 (fr) 1996-10-23
EP0738361B1 true EP0738361B1 (fr) 1997-09-24
EP0738361B2 EP0738361B2 (fr) 2005-04-06

Family

ID=6507949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95906956A Expired - Lifetime EP0738361B2 (fr) 1994-01-14 1995-01-16 Acier d'armature lamine a froid et son procede de production

Country Status (10)

Country Link
EP (1) EP0738361B2 (fr)
AT (1) ATE158634T1 (fr)
CZ (1) CZ289576B6 (fr)
DE (2) DE4400974A1 (fr)
DK (1) DK0738361T4 (fr)
HU (1) HU217903B (fr)
LT (1) LT4139B (fr)
PL (1) PL177898B1 (fr)
SK (1) SK282802B6 (fr)
WO (1) WO1995019480A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002300805B2 (en) * 2001-08-28 2007-02-15 The Australian Steel Company (Operations) Pty Ltd Metal mesh and method for producing a wire component therefor
DE102007027015A1 (de) * 2007-06-08 2008-12-11 Schöck Bauteile GmbH Bewehrungsstab

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE499128A (fr) * 1949-11-04
CH313327A (de) * 1953-02-14 1956-04-15 Tektonik Ag Armierungsnetz für Eisenbeton
DE1084464B (de) * 1953-09-03 1960-06-30 Moossche Eisenwerke Ag Bewehrungsdraht oder -stab, insbesondere fuer Spannbeton, sowie Verfahren und Vorrichtung zu seiner Herstellung
FR1089781A (fr) * 1953-12-21 1955-03-22 Moossche Eisenwerke Ag Armature pour béton
US2821727A (en) * 1955-05-16 1958-02-04 John C Corckran Corrugated nail making machine having a combined wire feeding and rolling means
BE563074A (fr) * 1957-01-22
BE569732A (fr) * 1957-09-28
LU37094A1 (fr) * 1958-04-12
FR1207928A (fr) * 1958-05-05 1960-02-19 Mauser Kg Natte d'armature pour béton, à barres d'armature nervurées
FR1240643A (fr) * 1959-07-29 1960-09-09 Barre d'acier pour armature de béton
CA725390A (en) * 1960-06-21 1966-01-11 Gillberg Johannes Method and apparatus for the manufacture of reinforcing bars
US3256727A (en) * 1965-07-21 1966-06-21 Takaishi Yoshio Method and apparatus for producing deformed steel bars
FR2080184A5 (fr) * 1970-02-26 1971-11-12 Scholtes Ets Eugen
US3928998A (en) * 1973-11-28 1975-12-30 Aurelio Leonardo Francisco Metal rod for reinforced concrete and process for producing said rod
SU1025832A1 (ru) * 1982-02-15 1983-06-30 Научно-Исследовательский Институт Бетона И Железобетона Госстроя Ссср Арматурна проволока периодического профил
SU1364675A1 (ru) * 1986-07-16 1988-01-07 Магнитогорский горно-металлургический институт им.Г.И.Носова Арматурна проволока периодического профил
DE4011486A1 (de) * 1990-04-09 1991-10-10 Inst Stahlbeton Bewehrung Ev Betonrippenstahl mit kaltgewalzten schraegrippen und dessen verwendung
DE4011487A1 (de) 1990-04-09 1991-10-10 Henkel Kgaa Tensidmischung fuer die verwendung in wasch- und reinigungsmitteln

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Deutsche DIN-Norm 488, Teil 4, Titelblatt sowie Seiten 4 und 5; Juni 1986 *

Also Published As

Publication number Publication date
HU9601912D0 (en) 1996-09-30
CZ9602010A3 (en) 1996-10-16
EP0738361B2 (fr) 2005-04-06
EP0738361A1 (fr) 1996-10-23
WO1995019480A1 (fr) 1995-07-20
LT4139B (en) 1997-04-25
PL177898B1 (pl) 2000-01-31
CZ289576B6 (cs) 2002-02-13
DK0738361T4 (da) 2005-04-25
ATE158634T1 (de) 1997-10-15
DE59500715D1 (de) 1997-10-30
HUT76083A (en) 1997-06-30
LT96105A (en) 1996-11-25
SK282802B6 (sk) 2002-12-03
DE4400974A1 (de) 1995-07-20
DK0738361T3 (da) 1998-02-16
HU217903B (hu) 2000-05-28
SK90996A3 (en) 1997-01-08

Similar Documents

Publication Publication Date Title
DE10323693B3 (de) Blechelemente aus flexibel gewalztem Bandmaterial
EP0425059B1 (fr) Profilé en acier de forme tubulaire pour renforcer les portes de véhicules
DE69909487T2 (de) Metallspundwand
EP1479842B1 (fr) Profilé creux
DE60222300T2 (de) Röhrenförmiger türbalken mit variabler dicke
DE10014078C5 (de) Verfahren zur Herstellung eines Schweißbolzens
DE69211869T2 (de) Verfahren zum Walzen von Stahlprofilen
EP1346861B1 (fr) Poutre de choc pour véhicule
WO1998009745A1 (fr) Procede et dispositif de fabrication d'une tole metallique ondulee presentant une microstructure dans le sens transversal de l'ondulation
DE2723382A1 (de) Verfahren zur herstellung von stahlfasern fuer stahlbeton
DE4315270A1 (de) Stahlfaserverstärkter Beton mit hoher Biegefestigkeit
DE69708164T2 (de) Spannband mit ineinandergreifenden Enden
DE60023820T2 (de) Verfahren zur Herstellung von gebogenen und deformierten metallischen Teilen
DE102016103539A1 (de) Verfahren zur Herstellung eines mehrdimensional gefügestrukturierten, tiefziehfähigen Metallflachprodukts und Metallflachprodukt
EP0451798B1 (fr) Armature de béton nervurée à nervures obliques laminées à froid
DE69007677T2 (de) Rippenstahl mit hoher Haftfestigkeit und dessen Herstellungsverfahren.
EP0738361B1 (fr) Acier d'armature lamine a froid et son procede de production
DE102022126492A1 (de) Verfahren zur herstellung eines karosseriestrukturbauteils mit verstärkten bereichen
DE2936680C2 (de) Verfahren und Vorrichtung zum Warmwalzen von Doppel-T-Trägern
EP1332262B2 (fr) Treillis d'armature pour beton arme
EP2177282A1 (fr) Elément structurel en métal adapté au chargement pour un échangeur thermique, procédé de fabrication d'un élément structurel adapté au chargement
EP1231331B1 (fr) Acier à béton nervuré et béton armé
DE4232115A1 (de) Hochbelastbares Befestigungselement und Verfahren zu dessen Herstellung
DE8333361U1 (de) Betonbewehrungsstahlstab
EP0504219B1 (fr) Cable en acier pour le renforcement de materiaux d'enrobage, notamment de beton, et procede de fabrication de ce cable

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19960620

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK FR GB IT LI NL

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19970128

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

ITF It: translation for a ep patent filed
GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK FR GB IT LI NL

REF Corresponds to:

Ref document number: 158634

Country of ref document: AT

Date of ref document: 19971015

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: E. BLUM & CO. PATENTANWAELTE

Ref country code: CH

Ref legal event code: EP

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970925

REF Corresponds to:

Ref document number: 59500715

Country of ref document: DE

Date of ref document: 19971030

ET Fr: translation filed
REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: VALSABBIA DEUTSCHLAND GMBH

Effective date: 19980624

NLR1 Nl: opposition has been filed with the epo

Opponent name: VALSABBIA DEUTSCHLAND GMBH

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

APAE Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOS REFNO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

APBU Appeal procedure closed

Free format text: ORIGINAL CODE: EPIDOSNNOA9O

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 20050406

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT BE CH DE DK FR GB IT LI NL

REG Reference to a national code

Ref country code: DK

Ref legal event code: T4

REG Reference to a national code

Ref country code: CH

Ref legal event code: AEN

Free format text: AUFRECHTERHALTUNG DES PATENTES IN GEAENDERTER FORM

NLR2 Nl: decision of opposition

Effective date: 20050406

GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)
NLR3 Nl: receipt of modified translations in the netherlands language after an opposition procedure
APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

ET3 Fr: translation filed ** decision concerning opposition
REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: INSTITUT FUER STAHLBETON BEWEHRUNG E.V.

Free format text: INSTITUT FUER STAHLBETON BEWEHRUNG E.V.#LANDSBERGER STRASSE 408#81241 MUENCHEN (DE) -TRANSFER TO- INSTITUT FUER STAHLBETON BEWEHRUNG E.V.#LANDSBERGER STRASSE 408#81241 MUENCHEN (DE)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20100125

Year of fee payment: 16

Ref country code: CH

Payment date: 20100125

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20100125

Year of fee payment: 16

Ref country code: FR

Payment date: 20100209

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20100121

Year of fee payment: 16

Ref country code: DE

Payment date: 20100129

Year of fee payment: 16

Ref country code: BE

Payment date: 20100125

Year of fee payment: 16

Ref country code: AT

Payment date: 20100120

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20100121

Year of fee payment: 16

BERE Be: lapsed

Owner name: *INSTITUT FUR STAHLBETON BEWEHRUNG E.V.

Effective date: 20110131

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20110801

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20110116

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110131

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110131

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110131

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110116

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110801

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110116

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59500715

Country of ref document: DE

Effective date: 20110802

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110802