DE1072949B - Process for the production of reinforcing steel with transversely grooved parts of its circumference - Google Patents
Process for the production of reinforcing steel with transversely grooved parts of its circumferenceInfo
- Publication number
- DE1072949B DE1072949B DENDAT1072949D DE1072949DA DE1072949B DE 1072949 B DE1072949 B DE 1072949B DE NDAT1072949 D DENDAT1072949 D DE NDAT1072949D DE 1072949D A DE1072949D A DE 1072949DA DE 1072949 B DE1072949 B DE 1072949B
- Authority
- DE
- Germany
- Prior art keywords
- wire
- grooves
- cross
- section
- oval
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Crystallography & Structural Chemistry (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Metal Extraction Processes (AREA)
- Metal Rolling (AREA)
- Reinforcement Elements For Buildings (AREA)
- Wire Processing (AREA)
Description
DEUTSCHESGERMAN
Zur Bewehrung hochbeanspruchter Stahl- und Spannbetonbauteile verwendet man Bewehrungsstahl in Form von Stäben oder Drähten, die an ihrer Oberfläche Vorsprünge, Rippen oder Rillen aufweisen. Solche Bewehrungsdrähte werden in der Regel dadurch hergestellt, daß in der Wärme rundgewalzter Draht zunächst auf kreisrunden Querschnitt gezogen wird, wobei sich eine Kaltverfestigung ergibt, und dann der gezogene Draht durch Kaltwalzen mit Rillen versehen wird. Bei diesem Verfahren ergibt sich bei dem Herstellen der Rillen ein hoher Verschleiß an Walzen, da die Walzen die Rillen in ein bereits kalt verfestigtes Material eindrücken müssen. Ein weiterer Nachteil dieses Verfahrens liegt darin, daß die mit Rillen versehenen Drähte nicht mehr kreisrund sind, sondern durch das Einwalzen der Rillen eine leicht ovale Form erhalten. Das wirkt sich insbesondere bei der Bestimmung des Drahtdurchmessers bzw. des Drahtquerschnitts nachteilig aus.Reinforcing steel is used to reinforce highly stressed steel and prestressed concrete components in the form of rods or wires which have projections, ribs or grooves on their surface. Such reinforcing wires are usually produced by hot-rolled wire is first drawn to a circular cross-section, resulting in work hardening, and then the drawn wire is grooved by cold rolling. This method results in the manufacture of the grooves a high level of wear and tear on the rollers, since the rollers form the grooves in an already work-hardened Have to press in the material. Another disadvantage of this method is that the grooved Wires are no longer circular, but a slightly oval shape due to the rolling in of the grooves obtain. This is particularly important when determining the wire diameter or the wire cross-section disadvantageous.
Man hat bereits versucht, die Nachteile dieses Verfahrens dadurch zu beseitigen, daß man einen weiteren Arbeitsgang anschließt, in dem der Draht zwischen glatten, unprofilierten Walzen kalt gewalzt wird, die um 90° gegenüber den Walzen, mit denen die Rillen eingewalzt worden sind, versetzt sind. Durch diesen Arbeitsgang soll das leicht oval gepreßte Profil wieder auf einen kreisrunden Querschnitt gebracht werden. Dieser zusätzliche Arbeitsgang kann auch vor dem Rillenwalzen angewandt werden; dann wird durch ihn der Draht vor dem Einwalzen der Rillen in einer Richtung und in einem Maße oval kalt gewalzt, wie ein runder Draht durch das Einwalzen der Rillen in einer um 90° gedrehten Richtung voll gewalzt werden würde. Wenn auch ein nach diesen Verfahren hergestellter Draht hinsichtlich seiner Form und Gleichmäßigkeit befriedigt, so haben diese Verfahren doch den erheblichen Nachteil eines hohen Verschleißes der Walzen und der Notwendigkeit, mindestens vier Walzen verwenden zu müssen.Attempts have already been made to eliminate the disadvantages of this method by adding another This is followed by an operation in which the wire is cold-rolled between smooth, unprofiled rollers are offset by 90 ° with respect to the rollers with which the grooves have been rolled. Through this Operation is to bring the slightly oval pressed profile back to a circular cross-section. This additional operation can also be used before grooving; then will through him the wire before rolling the grooves in one direction and to an extent oval cold rolled, such as a round wire can be fully rolled by rolling the grooves in a direction rotated by 90 ° would. Even if it is a wire produced by this method in terms of its shape and uniformity satisfied, these methods have the significant disadvantage of high wear of the Rollers and the need to use at least four rollers.
Durch einen Vorschlag des Erfinders ist ein Verfahren bekanntgeworden, die Nachteile, die das Eindrücken der Rillen in bereits kalt verfestigten Draht verursacht, dadurch zu vermeiden, daß man in den weichen Walzdraht Rillen eindrückt und dann den so gerillten Draht, der dabei leicht ovale Form angenommen hat, durch eine kreisrunde Ziehdüse auf den endgültigen kreisrunden Querschnitt zieht, wobei eine Kaltverfestigung in einem vorbestimmten gewünschten Maße eintritt. Dieses an sich befriedigende Verfahren erfordert eine sorgfältige Anpassung des Walzendruckes auf den meist nicht ganz gleichmäßigen Ausgangsdurchmesser des Walzdrahtes und auf die öffnungsweite der Ziehdüse.A method has become known through a suggestion by the inventor, the disadvantages, the indentation of the grooves in already work-hardened wire can be avoided by getting into the soft wire rod grooves and then the grooved wire, which thereby assumed a slightly oval shape has, pulls through a circular drawing nozzle onto the final circular cross-section, with a Work hardening occurs to a predetermined desired extent. This in itself satisfactory process requires a careful adjustment of the roller pressure to the usually not quite uniform starting diameter of the wire rod and the opening width of the drawing nozzle.
Die Erfindung bezweckt ein Verfahren zum Herstel-The invention aims at a method for producing
Verfahren zum Herstellen
von an Teilen seines Umfanges
quergerilltem BewehrungsstahlMethod of manufacture
from in parts of its extent
cross-grooved reinforcing steel
Anmelder:Applicant:
Bau-Stahlgewebe G.m.b.H.,
Düsseldorf-Oberkassel, Burggrafenstr. 5Construction steel mesh GmbH,
Düsseldorf-Oberkassel, Burggrafenstr. 5
Oskar Palmer, Düsseldorf,
ist als Erfinder genannt wordenOskar Palmer, Düsseldorf,
has been named as the inventor
len solchen kreisrunden, gerillten, in einem erwünschten nicht zu hohem Maße kalt verformten Betonbewehrungsstahls, das keinen hohen Walzen verschleiß, keine zusätzlichen Walzen und keine schwierige Einstellung des Walzendruckes mit sich bringt.len such circular, grooved, in a desirable not too high a degree of cold-deformed concrete reinforcement steel that does not wear high rollers, none additional rollers and no difficult adjustment of the roller pressure with it.
Gemäß der Erfindung wird zum Herstellen von an Teilen seines Umfanges quer gerilltem Bewehrungsstahl Walzdraht mit kreisrundem Querschnitt durch eine ovale Ziehdüse gezogen, und dann wird der Querschnitt des Drahtes durch Einwalzen von Rillen in die Schmalseiten des Ovals wiederum zu einem Kreisquerschnitt geformt.According to the invention, wire rod with a circular cross-section is used to produce reinforcing steel that is cross-grooved on parts of its circumference an oval drawing nozzle is drawn, and then the cross-section of the wire is made by rolling grooves into it the narrow sides of the oval in turn formed into a circular cross-section.
Die Erfindung wird im folgenden an Hand der Zeichnungen erläutert. Es zeigenThe invention is explained below with reference to the drawings. Show it
Fig. 1 bis 3 in Ansicht einen Draht vor und unmittelbar nach dem Ziehen durch eine ovale Düse und nach dem Einwalzen der Rillen,1 to 3 show a view of a wire before and immediately after being drawn through an oval nozzle and after rolling in the grooves,
Fig. 4 eine Vorrichtung zur Ausübung des erfinderischen Verfahrens,4 shows a device for carrying out the inventive method,
Fig. 5 einen Schnitt nach der Linie V-V der Fig. 4, Fig. 6 einen Schnitt nach der Linie VI-VI der Fig. 4.Fig. 5 is a section along the line V-V of Fig. 4, Fig. 6 is a section along the line VI-VI of the Fig. 4.
Fig. 1 zeigt einen üblichen Walzdraht von kreisrundem Profil mit einem Durchmesser D. Der Walzdraht hat beispielsweise eine der Handelsgüte entsprechende Festigkeit von 40 kg/mm2. Dieser Walzdraht wird durch eine ovale Ziehdüse gezogen, so daß sich ein gezogener Draht gemäß Fig. 2 ergibt, dessen Profil oval ist, mit einer langen Achse a, die etwa um 10 bis 12% größer ist als die kurze Achse b. Die lange Achse α ist 8 bis 10% kleiner als der Durchmesser D des Walzdrahtes (Fig. 1). Infolge des Ziehens wird die Festigkeit des Walzdrahtes an den Längsseiten des Ovals so erhöht, daß der Draht fast die Festigkeit besitzt, die er endgültig haben soll. Wenn die endgültig1 shows a conventional wire rod with a circular profile and a diameter D. The wire rod has, for example, a strength of 40 kg / mm 2 corresponding to the commercial grade. This wire rod is drawn through an oval drawing nozzle, so that there is a drawn wire according to FIG. 2, the profile of which is oval, with a long axis a, which is about 10 to 12% larger than the short axis b. The long axis α is 8 to 10% smaller than the diameter D of the wire rod (Fig. 1). As a result of the drawing, the strength of the wire rod is increased on the long sides of the oval so that the wire has almost the strength that it should finally have. When the final
S09'70ff/1Q3S09'70ff / 1Q3
Claims (2)
Der Walzdraht 1 wird in Richtung des Pfeiles P durch eine Ziehdüse 2 gezogen, die einen ovalen Querschnitt besitzt, deren Längsachse in Fig. 4 in der Zeichenebene zu denken ist, während die kurze Achse senkrecht zur Zeichenebene steht. Dadurch erhält der Draht 1 einen Querschnitt, wie ihn Fig. 5 zeigt. Der Draht entspricht dann der Fig. 4 shows the basic arrangement of a device for carrying out the method.
The wire rod 1 is drawn in the direction of the arrow P through a drawing nozzle 2 which has an oval cross section, the longitudinal axis of which is to be thought of in the plane of the drawing in FIG. 4, while the short axis is perpendicular to the plane of the drawing. This gives the wire 1 a cross section as shown in FIG. 5. The wire then corresponds to Fig.
Patentanspruch: p
Claim:
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT211767D | |||
DEB46234A DE1058004B (en) | 1957-09-28 | 1957-09-28 | Process for the production of reinforcing steel with transversely grooved parts of its circumference, for example by grooving by means of form rolling and then drawing wire rod |
DE211767T | 1957-09-28 | ||
DEB0048946 | 1958-05-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1072949B true DE1072949B (en) | 1960-01-14 |
Family
ID=29716168
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT1072949D Pending DE1072949B (en) | 1957-09-28 | Process for the production of reinforcing steel with transversely grooved parts of its circumference | |
DEB46234A Pending DE1058004B (en) | 1957-04-20 | 1957-09-28 | Process for the production of reinforcing steel with transversely grooved parts of its circumference, for example by grooving by means of form rolling and then drawing wire rod |
DE19581408258 Pending DE1408258A1 (en) | 1957-09-28 | 1958-05-14 | Process for the manufacture of reinforcing steel with transversely grooved parts of its circumference |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB46234A Pending DE1058004B (en) | 1957-04-20 | 1957-09-28 | Process for the production of reinforcing steel with transversely grooved parts of its circumference, for example by grooving by means of form rolling and then drawing wire rod |
DE19581408258 Pending DE1408258A1 (en) | 1957-09-28 | 1958-05-14 | Process for the manufacture of reinforcing steel with transversely grooved parts of its circumference |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE569732A (en) |
DE (3) | DE1058004B (en) |
FR (1) | FR1202576A (en) |
GB (1) | GB854492A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3262300A (en) * | 1963-09-10 | 1966-07-26 | Cincinnati Milling Machine Co | Process and tool for precision slot finishing |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4027182A (en) * | 1975-10-28 | 1977-05-31 | The United States Of America As Represented By The Secretary Of The Interior | Rate independent pulse generator |
DE4400974A1 (en) * | 1994-01-14 | 1995-07-20 | Inst Stahlbeton Bewehrung Ev | Reinforcing steel |
BR112020004335A2 (en) * | 2017-09-04 | 2020-09-08 | Obschestvo S Ogranichennoi Otvetstvennostyu ''armastil'' | reinforcement wire with spiral profile |
-
0
- DE DENDAT1072949D patent/DE1072949B/en active Pending
- BE BE569732D patent/BE569732A/xx unknown
-
1957
- 1957-09-28 DE DEB46234A patent/DE1058004B/en active Pending
-
1958
- 1958-05-14 DE DE19581408258 patent/DE1408258A1/en active Pending
- 1958-08-29 GB GB27873/58A patent/GB854492A/en not_active Expired
- 1958-09-15 FR FR1202576D patent/FR1202576A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3262300A (en) * | 1963-09-10 | 1966-07-26 | Cincinnati Milling Machine Co | Process and tool for precision slot finishing |
Also Published As
Publication number | Publication date |
---|---|
DE1408258A1 (en) | 1968-10-03 |
DE1058004B (en) | 1959-05-27 |
GB854492A (en) | 1960-11-23 |
FR1202576A (en) | 1960-01-12 |
BE569732A (en) |
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