EP2959983A1 - Method of manufacturing seamless hollow ingot of steel - Google Patents
Method of manufacturing seamless hollow ingot of steel Download PDFInfo
- Publication number
- EP2959983A1 EP2959983A1 EP15171790.7A EP15171790A EP2959983A1 EP 2959983 A1 EP2959983 A1 EP 2959983A1 EP 15171790 A EP15171790 A EP 15171790A EP 2959983 A1 EP2959983 A1 EP 2959983A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- angle
- diameter
- rolling
- inlet
- block
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 7
- 239000010959 steel Substances 0.000 title claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 63
- 238000009499 grossing Methods 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 13
- 230000009467 reduction Effects 0.000 claims description 10
- 230000008859 change Effects 0.000 description 7
- 238000004080 punching Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000916 dilatatory effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/08—Diameter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/024—Rolls for bars, rods, rounds, tubes, wire or the like
Definitions
- the invention relates to a method for producing a seamless hollow block made of steel according to the preamble of claim 1.
- Seamless pipes, especially of steel, are generally produced in three main forming steps, namely by punching, stretching and finish rolling.
- solid round blocks are often first punched in a cross-rolling mill to form a hollow block and later introduced into the so-called dimensional or Streckreduzierwalztechnik for finish rolling.
- various methods are known, e.g. the impact bench procedure.
- the entry angle describes the angle between the roll axis and the generatrix of the roll body in the inlet region.
- the outlet angle is the angle between the roll axis and the generatrix of the roll body in the outlet region.
- the entry angle of the rolls is formed by the angle between the roll longitudinal axis and the generatrix of the roll body in the inlet region of the roll. Accordingly, the outlet angle is formed by the angle between the roll longitudinal axis and the generatrix of the roll body in the outlet region of the roll.
- the effective entry angle at which the rolling stock enters the inlet part of the rolls results from the set spread angle between the roll longitudinal axis and the longitudinal axis of the rolling stock or rolling mill center axis. At a spread angle of 0 ° then the entry angle of the rollers corresponds to the effective entry angle. The same applies to the effective outlet angle.
- inlet and outlet angle correspond to the calibrated in the roller angles. Changes in the spread angle lead to changes in the effective entry and exit angles. In the case of an equal inlet and outlet angle of 3.5 ° calibrated in the roller body, the reduction of the spread angle by 1 ° leads to the reduction of the effective inlet angle to 2.5 ° and to the increase of the effective outlet angle to 4.5 °.
- the spread angle describes the angle between the roll and rolling stock at a transport angle of zero degrees.
- the two axes intersect in front of the inlet side of the Slanting mill, resulting in a positive spread angle. If the point of intersection is on the outlet side, the spread angle is negative.
- the transport angle which specifies the feed of the rolling stock relative to the punch mandrel in the rolling mill, describes the angle by which the rolls are pivoted about a pivot axis perpendicular to the mill axis.
- the object of the invention is to provide a method for producing a seamless hollow block made of steel from a solid round block by cross rolling by means of a three-roll cross rolling mill, in which by means of a single set of rolls equally hollow blocks can be perforated strongly reducing and greatly widening.
- the hollow block diameter produced with a block diameter should be variably adjustable and differ in diameter by up to 35%. Furthermore, with the method, the changeover times and thus storage costs for additionally calibrated rolls should be significantly reduced.
- the teaching of the invention comprises a method for producing a seamless hollow block from a solid round block made of steel with a hollow block diameter, which is rolled by reducing or bulging rolling smaller or larger than the solid round block used, in which by means of a three-roll cross rolling mill via a held between the rollers, a hole part and at least one smoothing part having perforated mandrel, the hollow block is produced, wherein for the production of the hollow block with a reduced or increased compared to the inserted round block diameter, in particular the clearance of the rollers in the narrowest cross section ("high point ”) in relation to the diameter of the inserted round block and the position of Mandrel tip with respect to the high point (mandrel template) and the effective entry angle, characterized in that, using an identical rolling and reducing roll set, the settings for the rolls and piercing mandrel are determined and made by the following equations: effective entry angle: 2 ° to 7 ° Diameter high point: 75 to 90% of the block diameter Dorn template: (0.05 to
- the desired hollow block diameters in the range between the limits for the reducing and expanding rolls can then be realized without changing the roll calibration with adaptation of the mandrel template, the diameter at the high point and by varying the spread angle, resulting in other effective entry and exit angles.
- the spread angle would have to be chosen so that in the case of a same length of the inlet and outlet part on the roller and the same inlet and outlet angle of about 3.5 ° to 4 , 0 ° result.
- the diameter at the high point would be about 85%, the Dornvorlage about 0.25 x block diameter.
- the principle is that the larger the desired hollow block diameter, the larger the spread angle, the smaller the effective entry angle, the larger the exit angle, the larger the diameter at the high point and the smaller the mandrel template.
- the piercer should be recalibrated accordingly.
- a basic requirement for the application of the invention is a three-roll cross rolling mill, in which the spread angle of the rolls can be changed. This describes the angle between roll and rolling stock at a transport angle of zero degrees. If the two axes intersect in front of the inlet side of the cross rolling mill, the result is a positive spread angle. If the point of intersection is on the outlet side, the spread angle is negative.
- the great advantage of the proposed method is that it can be perforated from strongly reducing to strongly expanding with the same roll calibration, whereby the hollow block diameters achieved can differ by up to 35% with a roll calibration. This involves considerable time savings for no longer required roll change and the provision of appropriate sets of rolls. In addition, the number of required round block formats for the hollow block diameter to be produced can be reduced, which considerably reduces the logistics effort.
- the strongly expanding rolling in addition to the variation of the roll adjustment according to the invention, only one appropriately calibrated mandrel with an additional expansion part is to be used.
- a round block with 180 mm diameter can be made in this way from a round block with 180 mm diameter, a hollow block with a diameter of 155 mm or a hollow block with a diameter of 192 mm. This corresponds to a realized reduction rate of approx. 14% or an expansion factor of approx. 7%.
- the degree of expansion is defined as the difference between the diameter of hollow block and round block divided by the diameter of the round block.
- the spread angle is adjusted so that there is a correspondingly smaller angle in the inlet and a corresponding larger angle in the outlet.
- the mandrel template is to be significantly reduced during expansion compared to reducing, so that the entire expansion process takes place in the outlet part of the cross rolling mill.
- the maximum possible length of the outlet part is to be used for the forming process.
- the mandrel pattern for reducing rollers is therefore 60 to 120 mm and for expanding rollers 15 to 45 mm.
- the piercer has an additional widening part during the widening rolling between the hole part and the smoothing part, which causes a particularly large decrease in wall thickness behind the high point, which in turn can be converted into a diameter widening.
- Table 1 shows the possibilities of the method according to the invention on the example of a Rohblock fashionrs of 180 mm.
- SPW the spread angle is marked, with the initial puncture diameter of the round block, with DHP the diameter at the high point, with the end the diameter of the produced hollow block and with DM change the achieved diameter change.
- DHP the diameter at the high point
- DM the diameter at the high point
- FIG. 1 are a longitudinal section and a cross section through a three-roll cross-rolling mill shown in which a round block is perforated strongly reducing in the direction of the transport arrow.
- the three-roll cross rolling mill consists of three rollers 2, with which the round block 1 is rolled over a piercer 3a to a hollow block 4a with a relation to the initial diameter of the round block 1 greatly reduced diameter.
- the narrowest cross section between the three rollers 2 identifies the high point 6 and indicates the diameter of the hollow block 4a produced.
- the tip of the hole dome 3a is seen at a distance 7 in the rolling direction in front of the high point 6 of the rollers 2.
- the tip of the piercer 3a assumes a position that ensures that the round block 1 is perforated reducing error-free.
- the distance 7 is also referred to as a mandrel template.
- the piercing mandrel 3a used according to the invention for reducing rolls shows FIG. 2 ,
- the perforated mandrel 3 a consists of a hole part 10, a smoothing part 12 and a cylindrical part 13. Only the hole part 10 projects clearly beyond the high point 6 into the inlet area of the rollers 2. With 5 of the spreading angle of the rollers is designated, which indicates the angular position of the roller longitudinal axis 8 to the rolling mill axis 9.
- FIG. 3 For the strongly dilating punching shows FIG. 3 also on a longitudinal and cross section through a three-roll cross rolling mill, the plant configuration.
- the round block 1 is transported in the direction of the arrow through the cross-rolling mill and greatly widening perforated.
- the diameter of the round block 1 significantly enlarged diameter of the hollow block 4b produced, resulting in a significantly increased roll spacing at high point 6 and a significantly reduced spread angle 5 of the rollers 2 against the settings for reducing rolls according to FIG. 1 reflects.
- FIG. 3 shows FIG. 3 also in the first example ( FIG. 1 ) otherwise unusual position of the piercing mandrel 3b, which is set back relative to the position for reducing punching clearly in the direction of high point 6.
- the mandrel template 7 is therefore significantly reduced in expanding rollers compared to the reducing rollers, so that only a small part of the hole part 10 protrudes into the inlet region of the rollers 2.
- the piercing mandrel 3b used according to the invention for the strongly reducing punching shows FIG. 4 , Opposite the piercer 3a for reducing rolls according to FIG. 2
- the perforated mandrel 3b according to the invention has an additional expansion part 11 for expanding rolling between the hole part 10 and the smoothing part 12, which causes a particularly large decrease in wall thickness behind the high point, which in turn can be converted into a diameter expansion.
- the calibrated entry and exit angle of the rollers 2 is in FIG. 6 shown schematically.
- the entry angle 15 describes the angle between the roller axis 8 and the generatrix of the rollers 2 in the inlet region. Again, the arrow indicates the direction of entry of the round block in the rollers 2.
- the outlet angle 16 is the angle between the roller axis 8 and the generatrix of the rollers 2 in the outlet region.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Metal Rolling (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
Die Erfindung betrifft ein Verfahren zur Herstellung eines nahtlosen Hohlblockes 4a, b aus einem massiven Rundblock 1 aus Stahl mit einem Hohlblockdurchmesser, der durch reduzierendes oder aufweitendes Walzen kleiner oder größer gewalzt wird als der eingesetzte massive Rundblock 1, bei dem mittels eines Drei-Walzen-Schrägwalzwerkes über einen zwischen den Walzen 2 gehaltenen, ein Lochteil 10 und mindestens ein Glättteil 12 aufweisenden Lochdorn 3a, b der Hohlblock 4a, b erzeugt wird, wobei unter Verwendung eines identischen Walzensatzes für das reduzierende und aufweitende Walzen die Einstellung für die Walzen und den Lochdorn durch folgende Gleichungen ermittelt und vorgenommen werden:
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines nahtlosen Hohlblocks aus Stahl gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a method for producing a seamless hollow block made of steel according to the preamble of
Nahtlose Rohre insbesondere aus Stahl werden im Regelfall in drei Hauptumformschritten hergestellt und zwar durch Lochen, Strecken und Fertigwalzen. Dabei werden häufig massive Rundblöcke zunächst in einem Schrägwalzwerk zu einem Hohlblock gelocht und später in das sogenannte Maß- oder Streckreduzierwalzwerk zum Fertigwalzen eingeführt. Für das dazwischen liegende Strecken sind verschiedene Verfahren bekannt, wie z.B. das Stoßbankverfahren.Seamless pipes, especially of steel, are generally produced in three main forming steps, namely by punching, stretching and finish rolling. In this case, solid round blocks are often first punched in a cross-rolling mill to form a hollow block and later introduced into the so-called dimensional or Streckreduzierwalzwerk for finish rolling. For the intermediate route, various methods are known, e.g. the impact bench procedure.
Aus der
Bekannt ist aus der
Durch leicht aufweitendes Walzen kann mit dem bekannten Verfahren aus einem massiven Rundblock mit einem Durchmesser von 180 mm Durchmesser ein Hohlblock mit einem Durchmesser von 186 mm erzeugt werden bei einem Aufweitegrad von 3,3%. Um das erzeugbare Walzspektrum signifikant zu erhöhen, wären allerdings mindestens doppelt so große Durchmesser-Vergrößerungen oder mehr erforderlich, ohne die Walzen zu diesem Zwecke wechseln zu müssen.By slightly widening rolling a hollow block with a diameter of 186 mm can be produced with the known method of a solid round block with a diameter of 180 mm diameter at a Aufweitegrad of 3.3%. In order to increase the producible rolling spectrum significantly, however, at least twice as large diameter magnifications or more would be required without having to change the rollers for this purpose.
Während gemäß
Der Einlaufwinkel beschreibt dabei den Winkel zwischen der Walzenachse und der Mantellinie des Walzenkörpers im Einlaufbereich.The entry angle describes the angle between the roll axis and the generatrix of the roll body in the inlet region.
Der Auslaufwinkel ist der Winkel zwischen der Walzenachse und der Mantellinie des Walzenkörpers im Auslaufbereich.The outlet angle is the angle between the roll axis and the generatrix of the roll body in the outlet region.
Beim Ein- und Auslaufwinkel ist zu unterscheiden zwischen dem durch die Kalibrierung der Walzen vorgegebenen Ein- und Auslaufwinkel und dem effektiven Ein- und Auslaufwinkel mit dem das Walzgut in den Einlaufteil der Walzen einläuft.At entry and exit angles, a distinction must be made between the entry and exit angles specified by the calibration of the rolls and the effective entry and exit angles at which the rolling stock enters the entry section of the rolls.
Der Einlaufwinkel der Walzen wird gebildet durch den Winkel zwischen der Walzenlängsachse und der Mantellinie des Walzenkörpers im Einlaufbereich der Walze. Entsprechend wird der Auslaufwinkel durch den Winkel zwischen der Walzenlängsachse und der Mantellinie des Walzenkörpers im Auslaufbereich der Walze gebildet.The entry angle of the rolls is formed by the angle between the roll longitudinal axis and the generatrix of the roll body in the inlet region of the roll. Accordingly, the outlet angle is formed by the angle between the roll longitudinal axis and the generatrix of the roll body in the outlet region of the roll.
Der effektive Einlaufwinkel, mit dem das Walzgut in den Einlaufteil der Walzen einläuft, ergibt sich durch den eingestellten Spreizwinkel zwischen der Walzenlängsachse und der Längsachse des Walzgutes bzw. Walzwerksmittenachse. Bei einem Spreizwinkel von 0° entspricht dann der Einlaufwinkel der Walzen dem effektiven Einlaufwinkel. Entsprechendes gilt für den effektiven Auslaufwinkel.The effective entry angle at which the rolling stock enters the inlet part of the rolls results from the set spread angle between the roll longitudinal axis and the longitudinal axis of the rolling stock or rolling mill center axis. At a spread angle of 0 ° then the entry angle of the rollers corresponds to the effective entry angle. The same applies to the effective outlet angle.
Im Falle eines Transportwinkels von Null Grad und eines Spreizwinkels von Null Grad entsprechen die effektiv im Walzwerk wirksamen Ein- und Auslaufwinkel den in die Walze kalibrierten Winkeln. Änderungen des Spreizwinkels führen zu Änderungen der effektiven Ein- und Auslaufwinkel. Im Falle eines gleichen in den Walzenkörper kalibrierten Ein- und Auslaufwinkels von 3,5° führt die Reduzierung des Spreizwinkels um 1° zur Reduzierung des effektiven Einlaufwinkels auf 2,5° und zur Erhöhung des effektiven Auslaufwinkels auf 4,5°.In the case of a transport angle of zero degrees and a spread angle of zero degrees effectively effective in the rolling mill inlet and outlet angle correspond to the calibrated in the roller angles. Changes in the spread angle lead to changes in the effective entry and exit angles. In the case of an equal inlet and outlet angle of 3.5 ° calibrated in the roller body, the reduction of the spread angle by 1 ° leads to the reduction of the effective inlet angle to 2.5 ° and to the increase of the effective outlet angle to 4.5 °.
Der Spreizwinkel beschreibt den Winkel zwischen Walzen- und Walzgutachse bei einem Transportwinkel von Null Grad. Schneiden sich die beiden Achsen vor der Einlaufseite des Schrägwalzwerkes, ergibt sich ein positiver Spreizwinkel. Liegt der Schnittpunkt auf der Auslaufseite, so ist der Spreizwinkel negativ.The spread angle describes the angle between the roll and rolling stock at a transport angle of zero degrees. The two axes intersect in front of the inlet side of the Slanting mill, resulting in a positive spread angle. If the point of intersection is on the outlet side, the spread angle is negative.
Der Transportwinkel, der den Vorschub des Walzgutes relativ zum Lochdorn im Walzwerk vorgibt, beschreibt den Winkel, um den die Walzen um eine zur Walzwerksmittenachse senkrechte Schwenkachse verschwenkt sind.The transport angle, which specifies the feed of the rolling stock relative to the punch mandrel in the rolling mill, describes the angle by which the rolls are pivoted about a pivot axis perpendicular to the mill axis.
Sollen nach dem Stand der Technik zum Beispiel aus demselben Rundblock dickwandige Hohlblöcke mit einem Durchmesser von 155 mm bis 192 mm hergestellt werden, war es bislang notwendig, zwei verschiedene Walzensätze einzusetzen. Als dickwandig gelten Hohlblöcke mit einer Wanddicke über 25 mm. Allerdings konnte mit diesen Maßnahmen noch kein stabiler Walzprozess erreicht werden. Zudem müssen teure Walzensätze mit zwei verschiedenen Kalibrierungen vorgehalten und entsprechende Umrüstzeiten von bis zu acht Stunden für das Schrägwalzwerk in Kauf genommen werden.If, according to the state of the art, for example, thick-walled hollow blocks with a diameter of 155 mm to 192 mm are to be produced from the same round block, it has hitherto been necessary to use two different sets of rolls. Hollow blocks with a wall thickness over 25 mm are considered to be thick-walled. However, a stable rolling process could not yet be achieved with these measures. In addition, expensive roller sets have to be maintained with two different calibrations and corresponding changeover times of up to eight hours for the cross-rolling mill can be accepted.
Aufgabe der Erfindung ist es ein Verfahren zur Herstellung eines nahtlosen Hohlblocks aus Stahl aus einem massiven Rundblock durch Schrägwalzen mittels eines Drei-Walzen-Schrägwalzwerkes anzugeben, bei dem mittels eines einzigen Walzensatzes gleichermaßen Hohlblöcke stark reduzierend als auch stark aufweitend gelocht werden können. Die mit einem Blockdurchmesser erzeugten Hohlblockdurchmesser sollen variabel einstellbar sein und im Durchmesser um bis zu 35% voneinander abweichen können. Desweiteren sollen mit dem Verfahren die Umrüstzeiten und damit Lagerhaltungskosten für zusätzlich kalibrierte Walzen deutlich reduziert werden.The object of the invention is to provide a method for producing a seamless hollow block made of steel from a solid round block by cross rolling by means of a three-roll cross rolling mill, in which by means of a single set of rolls equally hollow blocks can be perforated strongly reducing and greatly widening. The hollow block diameter produced with a block diameter should be variably adjustable and differ in diameter by up to 35%. Furthermore, with the method, the changeover times and thus storage costs for additionally calibrated rolls should be significantly reduced.
Diese Aufgabe wird ausgehend vom Oberbegriff in Verbindung mit dem kennzeichnenden Teil des Anspruches 1 gelöst.This object is achieved on the basis of the preamble in conjunction with the characterizing part of
Die Lehre der Erfindung umfasst ein Verfahren zur Herstellung eines nahtlosen Hohlblocks aus einem massiven Rundblock aus Stahl mit einem Hohlblock-Durchmesser, der durch reduzierendes oder aufweitendes Walzen kleiner oder größer gewalzt wird als der eingesetzte massive Rundblock, bei dem mittels eines Drei-Walzen-Schrägwalzwerkes über einen zwischen den Walzen gehaltenen, einen Lochteil und mindestens einen Glättteil aufweisenden Lochdorn der Hohlblock erzeugt wird, wobei zur Herstellung des Hohlblocks mit einem im Vergleich zum eingesetzten Rundblock verringerten oder vergrößerten Durchmesser, insbesondere der lichte Abstand der Walzen im engsten Querschnitt ("hoher Punkt") in Relation zum Durchmesser des eingesetzten Rundblockes und die Lage der Lochdornspitze in Bezug auf den hohen Punkt (Dornvorlage) sowie der effektive Einlaufwinkel eingestellt werden, welches dadurch gekennzeichnet ist, dass unter Verwendung eines identischen Walzensatzes für das reduzierende und aufweitende Walzen die Einstellungen für die Walzen und den Lochdorn durch folgende Gleichungen ermittelt und vorgenommen werden:
reduzierendes Walzen bis -30%:
reducing rolling up to -30%:
Die gewünschten Hohlblockdurchmesser im Bereich zwischen den Grenzwerten für das reduzierende und aufweitende Walzen können dann ohne Änderung der Walzenkalibrierung unter Anpassung der Dornvorlage, des Durchmessers am hohen Punkt und durch Variation des Spreizwinkels realisiert werden, wodurch sich andere effektive Ein-und Auslaufwinkel ergeben.The desired hollow block diameters in the range between the limits for the reducing and expanding rolls can then be realized without changing the roll calibration with adaptation of the mandrel template, the diameter at the high point and by varying the spread angle, resulting in other effective entry and exit angles.
Soll beispielsweise der Durchmesser des Hohlblockes gleich dem des massiven Rundblockes sein, müsste der Spreizwinkel so gewählt werden, dass sich im Falle einer gleichen Länge des Ein- und Auslaufteils auf der Walze auch gleiche Ein- und Auslaufwinkel von ca. 3,5°bis 4,0° ergeben. Der Durchmesser am hohen Punkt würde ca. 85% betragen, die Dornvorlage ca. 0,25 x Blockdurchmesser.For example, if the diameter of the hollow block should be equal to that of the solid round block, the spread angle would have to be chosen so that in the case of a same length of the inlet and outlet part on the roller and the same inlet and outlet angle of about 3.5 ° to 4 , 0 ° result. The diameter at the high point would be about 85%, the Dornvorlage about 0.25 x block diameter.
Es gilt der Grundsatz, je größer der gewünschte Hohlblockdurchmesser, desto größer der Spreizwinkel, desto kleiner der effektive Einlaufwinkel, desto größer der Auslaufwinkel, desto größer der Durchmesser am hohen Punkt und desto kleiner die Dornvorlage.The principle is that the larger the desired hollow block diameter, the larger the spread angle, the smaller the effective entry angle, the larger the exit angle, the larger the diameter at the high point and the smaller the mandrel template.
Versuche haben überraschend gezeigt, dass nur durch eine kombinierte Veränderung des effektiven Einlaufwinkels, der Dornvorlage und des Durchmessers im hohen Punkt, ein breites Spektrum an Hohlblockdurchmessern gewalzt werden kann.Experiments have surprisingly shown that only by a combined change in the effective angle of entry, the Dornvorlage and the diameter at a high point, a wide range of hollow block diameters can be rolled.
Gegebenenfalls sind für große Durchmesser-Variationen des Hohlblockes die Lochdorne entsprechend neu zu kalibrieren.If necessary, for large diameter variations of the hollow block, the piercer should be recalibrated accordingly.
Grundvoraussetzung für die Anwendung der Erfindung ist ein Drei-Walzen-Schrägwalzwerk, in dem der Spreizwinkel der Walzen geändert werden kann. Dieser beschreibt den Winkel zwischen Walzen- und Walzgutachse bei einem Transportwinkel von Null Grad. Schneiden sich die beiden Achsen vor der Einlaufseite des Schrägwalzwerkes, ergibt sich ein positiver Spreizwinkel. Liegt der Schnittpunkt auf der Auslaufseite, so ist der Spreizwinkel negativ.A basic requirement for the application of the invention is a three-roll cross rolling mill, in which the spread angle of the rolls can be changed. This describes the angle between roll and rolling stock at a transport angle of zero degrees. If the two axes intersect in front of the inlet side of the cross rolling mill, the result is a positive spread angle. If the point of intersection is on the outlet side, the spread angle is negative.
Sämtliche vorstehenden Angaben zu Ein- und Auslaufwinkeln beziehen sich auf einen theoretischen Transportwinkel von Null Grad, der das Schwenken der Walzen um die Senkrechte zur Walzachse beschreibt. Dadurch ergeben sich im dreidimensionalen Raum nochmals veränderte (größere) Ein- und Auslaufwinkel, die aufgrund der Komplexität nicht gesondert ausgewiesen sind.All the above data on entry and exit angles refer to a theoretical transport angle of zero degrees, which describes the pivoting of the rollers about the vertical to the rolling axis. This results in three-dimensional space once again changed (larger) entry and exit angles, which are not separately identified due to the complexity.
Der große Vorteil des vorgeschlagenen Verfahrens liegt darin, dass mit der gleichen Walzenkalibrierung von stark reduzierend bis stark aufweitend gelocht werden kann, wobei die erzielten Hohlblockdurchmesser mit einer Walzenkalibrierung um bis zu 35% voneinander abweichen können. Damit verbunden sind erhebliche Zeiteinsparungen für nicht mehr benötigte Walzenwechsel sowie das Vorhalten entsprechender Walzensätze. Zudem lässt sich die Anzahl der erforderlichen Rundblockformate für die zu erzeugenden Hohlblockdurchmesser reduzieren, was den Logistikaufwand erheblich verringert.
Für das stark aufweitende Walzen ist neben der erfindungsgemäßen Variation der Walzeneinstellung nur ein entsprechend kalibrierter Dorn mit einem zusätzlichen Aufweiteteil einzusetzen.The great advantage of the proposed method is that it can be perforated from strongly reducing to strongly expanding with the same roll calibration, whereby the hollow block diameters achieved can differ by up to 35% with a roll calibration. This involves considerable time savings for no longer required roll change and the provision of appropriate sets of rolls. In addition, the number of required round block formats for the hollow block diameter to be produced can be reduced, which considerably reduces the logistics effort.
For the strongly expanding rolling, in addition to the variation of the roll adjustment according to the invention, only one appropriately calibrated mandrel with an additional expansion part is to be used.
Beispielsweise kann auf diese Weise aus einem Rundblock mit 180 mm Durchmesser ein Hohlblock mit einem Durchmesser von 155 mm oder ein Hohlblock mit einem Durchmesser von 192 mm hergestellt werden. Dies entspricht einem realisierten Reduktionsgrad von ca. 14 % bzw. einem Aufweitegrad von ca. 7%.For example, can be made in this way from a round block with 180 mm diameter, a hollow block with a diameter of 155 mm or a hollow block with a diameter of 192 mm. This corresponds to a realized reduction rate of approx. 14% or an expansion factor of approx. 7%.
Der Aufweitegrad ist dabei definiert als Differenz der Durchmesser von Hohlblock und Rundblock dividiert durch den Durchmesser des Rundblocks.The degree of expansion is defined as the difference between the diameter of hollow block and round block divided by the diameter of the round block.
Im Zuge der durchgeführten Versuche wurde erkannt, dass mit den ursprünglich für das Reduzieren vorgesehenen Walzen ein stark aufweitendes Walzen mit einem Aufweitegrad von deutlich über 5% oder sogar über 15% möglich ist, wenn der Spreizwinkel zwischen Walzenlängsachse und Walzwerksmittenachse und der Abstand der Walzen im hohen Punkt derart angepasst wird, dass sich eine deutliche Verringerung des effektiven Einlaufwinkels ergibt.In the course of the tests carried out, it was recognized that with the rolls originally intended for reduction, it is possible to have a strongly widening roll with a widening degree of significantly more than 5% or even more than 15%, if the angle of spread between the roll longitudinal axis and the rolling mill center axis and the distance of the rolls in the high point is adjusted so that there is a significant reduction in the effective angle of entry.
Beim reduzierenden Walzen ist darauf zu achten, dass der Lochdorn ohne Aufweiteteil kalibriert wird, so dass der Dorn nur einen Loch- und einen Glättteil aufweist.When reducing rolls, make sure that the piercer is calibrated without a widening part so that the mandrel has only one hole and one flattening part.
Bei der Spreizwinkeleinstellung ist darauf zu achten, dass ein großer effektiver Einlaufwinkel und eine größtmögliche Länge im Einlaufteil der Walze genutzt werden können, um eine Reduktion des Durchmessers des einlaufenden Rohblocks unter der des geforderten Hohlblockdurchmessers zu realisieren.When adjusting the spread angle, it must be ensured that a large effective entry angle and a maximum length in the inlet part of the roller can be used in order to realize a reduction in the diameter of the incoming ingot below that of the required hollow block diameter.
Im anschließenden Auslaufteil erfolgt nur noch die erforderliche Mindest-Aufweitung, um den Hohlblock sicher über den Lochdorn zu transportieren.In the subsequent outlet part is only the required minimum expansion to safely transport the hollow block on the piercer.
Beim aufweitenden Walzen ist der Spreizwinkel so einzustellen, dass sich ein entsprechend kleinerer Winkel im Einlauf- und ein entsprechender größerer Winkel im Auslauf ergeben.When expanding rollers, the spread angle is adjusted so that there is a correspondingly smaller angle in the inlet and a corresponding larger angle in the outlet.
Eigene Untersuchungen zeigten, dass die aus der
Bei der Spreizwinkeleinstellung ist darauf zu achten, dass ein kleiner Einlaufwinkel und eine möglichst kurze Länge des Einlaufteils beim Walzen genutzt werden, so dass die maximale Reduktion des einlaufenden Rohblockdurchmessers am hohen Punkt nicht unter 85% sinkt.When adjusting the spread angle, make sure that a small inlet angle and the shortest possible length of the inlet part are used during rolling, so that the maximum reduction in the incoming ingot diameter does not drop below 85% at the high point.
Die Dornvorlage ist beim Aufweiten im Vergleich zum Reduzieren deutlich zu verkleinern, so dass der gesamte Aufweiteprozess im Auslaufteil des Schrägwalzwerkes erfolgt. Hier ist die maximal mögliche Länge des Auslaufteils für den Umformprozess zu nutzen.The mandrel template is to be significantly reduced during expansion compared to reducing, so that the entire expansion process takes place in the outlet part of the cross rolling mill. Here the maximum possible length of the outlet part is to be used for the forming process.
Bei einer Walze mit einer Einlauflänge von 300 mm und einer Auslauflänge von 200 mm, beträgt damit die Dornvorlage beim reduzierenden Walzen 60 bis 120 mm und beim aufweitenden Walzen 15 bis 45 mm.In the case of a roller with an inlet length of 300 mm and an outlet length of 200 mm, the mandrel pattern for reducing rollers is therefore 60 to 120 mm and for expanding rollers 15 to 45 mm.
Erfindungsgemäß ist vorgesehen, dass der Lochdorn beim aufweitenden Walzen zwischen Lochteil und Glättteil einen zusätzlichen Aufweiteteil aufweist, der bewirkt, dass besonders viel Wanddickenabnahme hinter dem hohen Punkt erfolgt, die wiederum in eine Durchmesseraufweitung umsetzbar ist.According to the invention, the piercer has an additional widening part during the widening rolling between the hole part and the smoothing part, which causes a particularly large decrease in wall thickness behind the high point, which in turn can be converted into a diameter widening.
Besondere Anforderungen an den Transportwinkel bezüglich der Anwendung der Erfindung bestehen nicht. Dieser kann entsprechend den Möglichkeiten des Walzwerkes im Bereich von 5,5° bis 12° genutzt werden.Special requirements for the transport angle with respect to the application of the invention do not exist. This can be used according to the possibilities of the rolling mill in the range of 5.5 ° to 12 °.
Die nachfolgende Tabelle 1 zeigt die Möglichkeiten des erfindungsgemäßen Verfahrens am Beispiel eines Rohblockdurchmessers von 180 mm auf. Mit SPW ist der Spreizwinkel, mit DM Anstich ist der Anstichdurchmesser des Rundblockes, mit DHP der Durchmesser am hohen Punkt, mit DM Ende der Durchmesser des erzeugten Hohlblockes und mit DM Änderung die erzielte Durchmesseränderung gekennzeichnet. Nicht aufgeführt sind die entsprechend eingestellten Dornvorlagen für das reduzierende und aufweitende Walzen.The following Table 1 shows the possibilities of the method according to the invention on the example of a Rohblockdurchmessers of 180 mm. With SPW the spread angle is marked, with the initial puncture diameter of the round block, with DHP the diameter at the high point, with the end the diameter of the produced hollow block and with DM change the achieved diameter change. Not listed are the appropriately set mandrel templates for the reducing and expanding rollers.
Die Ergebnisse belegen eindrucksvoll das nun erzielbare sehr breite Walzspektrum, um mit einem Rundblockdurchmesser Durchmesseränderungen des Hohlblockes von -30% bis +15% zu erzeugen. Daraus ergeben sich Arbeitsbereiche für ein und denselben Walzensatz von -22%...+12%, -30%...+6° oder -20..+16% für die Durchmesseränderung.
Das erfindungsgemäße Verfahren wird nachfolgend anhand schematischer Darstellungen näher erläutert.The inventive method will be explained in more detail with reference to schematic representations.
In
Das Drei-Walzen-Schrägwalzwerk besteht aus drei Walzen 2, mit denen der Rundblock 1 über einen Lochdorn 3a zu einem Hohlblock 4a mit einem gegenüber dem Ausgangsdurchmesser des Rundblockes 1 stark reduzierten Durchmesser gewalzt wird. Der engste Querschnitt zwischen den drei Walzen 2 kennzeichnet den hohen Punkt 6 und gibt den erzeugten Durchmesser des Hohlblocks 4a vor.The three-roll cross rolling mill consists of three
Die Spitze des Lochdoms 3a steht mit einem Abstand 7 in Walzrichtung gesehen vor dem hohen Punkt 6 der Walzen 2. Die Spitze des Lochdorn 3a nimmt dabei eine Lage ein, die sicherstellt, dass der Rundblock 1 fehlerfrei reduzierend gelocht wird.The tip of the
Der Abstand 7 wird auch als Dornvorlage bezeichnet. Den zum reduzierenden Walzen erfindungsgemäß verwendeten Lochdorn 3a zeigt
Für das stark aufweitende Lochen zeigt
Erfindungsgemäß zeigt
Den erfindungsgemäß für das stark reduzierende Lochen eingesetzten Lochdorn 3b zeigt
In
Der kalibrierte Ein- und Auslaufwinkel der Walzen 2 ist in
Der Einlaufwinkel 15 beschreibt den Winkel zwischen der Walzenachse 8 und der Mantellinie der Walzen 2 im Einlaufbereich. Auch hier gibt der Pfeil die Einlaufrichtung des Rundblocks in die Walzen 2 an.The entry angle 15 describes the angle between the
Der Auslaufwinkel 16 ist der Winkel zwischen der Walzenachse 8 und der Mantellinie der Walzen 2 im Auslaufbereich.The
Bei einem Spreizwinkel von 0° entspricht dann der kalibrierte Ein- und Auslaufwinkel dem effektiven Ein- und Auslaufwinkel, mit dem das Walzgut, also der Rundblock 1, in die Walzen 2 ein- bzw. hinausläuft.
Claims (5)
dass unter Verwendung eines identischen Walzensatzes für das reduzierende und aufweitende Walzen die Einstellungen für die Walzen und den Lochdorn durch folgende Gleichungen ermittelt und vorgenommen werden:
reduzierendes Walzen bis -30%:
that , using an identical rolling and reducing roll set, the settings for the rolls and piercer are determined and made by the following equations:
reducing rolling up to -30%:
dadurch gekennzeichnet,
dass beim reduzierenden Walzen der Lochteil 10 des Lochdornes 3a im Einlaufteil der Walzen 2, also in Walzrichtung gesehen, vor dem hohen Punkt liegt und das Glättteil 12 dahinter.Method according to claim 1,
characterized,
that, so seen in the reducing rolls of the hole portion 10 of the piercing mandrel 3a in the inlet part of the rolls 2 in the rolling direction, is located before the high point and the smoothing part 12 behind it.
dadurch gekennzeichnet,
dass beim aufweitenden Walzen die Dornvorlage 7 gegenüber der Dornvorlage beim reduzierenden Walzen in Bezug zum hohen Punkt zurückversetzt ist.Method according to claim 1,
characterized,
that the mandrel template is set back relative to the mandrel 7 submission to the reducing rolls with respect to the high point in the widening rollers.
dadurch gekennzeichnet,
dass für das reduzierende Walzen eines Hohlblocks 4a, welcher im Durchmesser um bis zu 30% kleiner ist als der Durchmesser des Rundblocks 1, abhängig vom geforderten Reduktionsgrad, die Spreizwinkel 5 bei einem kalibrierten Einlaufwinkel 15 von 2° und 3° auf bis zu 4° und bei einem Einlaufwinkel 15 von 4° auf bis zu 2,5° angehoben werden, wobei sich ein effektiver Einlaufwinkel 18 von bis zu 6° bei einem kalibrierten Einlaufwinkel 15 von bis zu 2° ein effektiver Einlaufwinkel 18 von 7° bei einem Einlaufwinkel 15 von bis zu 3° und ein effektiver Einlaufwinkel 18 von bis zu 6,5° bei einem Einlaufwinkel 15 von 4° ergibt.Method according to one of claims 1 to 3,
characterized,
that for the reducing rolling of a hollow block 4a, which is smaller in diameter by up to 30% than the diameter of the round block 1, depending on the required degree of reduction, the spread angle 5 at a calibrated inlet angle 15 of 2 ° and 3 ° up to 4 ° and raised at an inlet angle 15 of 4 ° up to 2.5 °, with an effective inlet angle 18 of up to 6 ° at a calibrated inlet angle 15 of up to 2 °, an effective inlet angle 18 of 7 ° at an inlet angle 15 of up to 3 ° and an effective entry angle 18 of up to 6.5 ° at an entry angle 15 of 4 ° results.
dadurch gekennzeichnet,
dass für das aufweitende Walzen eines Hohlblocks 4b, welcher im Durchmesser um bis zu 16% größer ist als der Durchmesser des Rundblockes 1 abhängig vom geforderten Aufweitegrad, die Spreizwinkel 5 bei einem kalibrierten Einlaufwinkel 15 von 2° und 3° auf bis zu 0° und bei einem Einlaufwinkel 15 von 4° auf bis zu -2° abgesenkt werden, wobei sich ein effektiver Einlaufwinkel 18 von bis zu 2° bei einem kalibrierten Einlaufwinkel 15 von 2°, ein effektiver Einlaufwinkel 18 von bis zu 3° bei einem Einlaufwinkel 15 von 3° und ein effektiver Einlaufwinkel 18 von bis zu 2° bei einem Einlaufwinkel 15 von 4° ergibt.Method according to one of claims 1 to 4,
characterized,
that for the widening rolling a hollow block 4b, which is larger in diameter by up to 16% than the diameter of the round block 1 depending on the required Aufweitegrad, the spread angle 5 at a calibrated inlet angle 15 of 2 ° and 3 ° up to 0 ° and at an inlet angle 15 of 4 ° to be lowered to -2 °, with an effective inlet angle 18 of up to 2 ° at a calibrated inlet angle 15 of 2 °, an effective inlet angle 18 of up to 3 ° at an inlet angle 15 of 3 ° and an effective inlet angle 18 of up to 2 ° at an inlet angle 15 of 4 ° results.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014009382.4A DE102014009382B4 (en) | 2014-06-24 | 2014-06-24 | Method for producing a seamless hollow block made of steel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2959983A1 true EP2959983A1 (en) | 2015-12-30 |
EP2959983B1 EP2959983B1 (en) | 2017-01-11 |
Family
ID=53442535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15171790.7A Not-in-force EP2959983B1 (en) | 2014-06-24 | 2015-06-12 | Method of manufacturing seamless hollow ingot of steel |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2959983B1 (en) |
DE (1) | DE102014009382B4 (en) |
ES (1) | ES2621570T3 (en) |
PL (1) | PL2959983T3 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS613606A (en) * | 1984-06-15 | 1986-01-09 | Sumitomo Metal Ind Ltd | Method for controlling piercing and rolling in cross helical roll piercer |
EP1593441A1 (en) * | 2002-12-12 | 2005-11-09 | Sumitomo Metal Industries Limited | Seamless metal tube producing method |
EP2127767A1 (en) * | 2006-12-28 | 2009-12-02 | Sumitomo Metal Industries Limited | Process for producing seamless steel pipe made of high-chromium high-nickel alloy steel |
EP1901862B1 (en) | 2005-06-16 | 2011-08-03 | V & M Deutschland GmbH | Device for production of a seamless hollow body from steel |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3550415A (en) * | 1969-01-13 | 1970-12-29 | United States Steel Corp | Feed and toe angle indicator for billet-piercing mill |
IT1298331B1 (en) * | 1998-03-04 | 1999-12-20 | Mannesmann Ag | PROCEDURE FOR THE PRODUCTION OF PIPES WITHOUT WELDING |
-
2014
- 2014-06-24 DE DE102014009382.4A patent/DE102014009382B4/en not_active Expired - Fee Related
-
2015
- 2015-06-12 PL PL15171790T patent/PL2959983T3/en unknown
- 2015-06-12 EP EP15171790.7A patent/EP2959983B1/en not_active Not-in-force
- 2015-06-12 ES ES15171790.7T patent/ES2621570T3/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS613606A (en) * | 1984-06-15 | 1986-01-09 | Sumitomo Metal Ind Ltd | Method for controlling piercing and rolling in cross helical roll piercer |
EP1593441A1 (en) * | 2002-12-12 | 2005-11-09 | Sumitomo Metal Industries Limited | Seamless metal tube producing method |
EP1901862B1 (en) | 2005-06-16 | 2011-08-03 | V & M Deutschland GmbH | Device for production of a seamless hollow body from steel |
EP2127767A1 (en) * | 2006-12-28 | 2009-12-02 | Sumitomo Metal Industries Limited | Process for producing seamless steel pipe made of high-chromium high-nickel alloy steel |
Non-Patent Citations (1)
Title |
---|
SCHRIFT BÄNDER, BLECHE, ROHRE, vol. 6, no. 4, 1965, pages 184 - 189 |
Also Published As
Publication number | Publication date |
---|---|
DE102014009382A1 (en) | 2016-01-07 |
ES2621570T3 (en) | 2017-07-04 |
PL2959983T3 (en) | 2017-09-29 |
DE102014009382B4 (en) | 2017-10-19 |
EP2959983B1 (en) | 2017-01-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE112005002080T5 (en) | Method for the design of roll profile and roll for the suppression of non-square waves | |
EP1901862B1 (en) | Device for production of a seamless hollow body from steel | |
EP2877298B1 (en) | Direct or indirect metal pipe extrusion process, metal pipe extrusion press and extruded metal pipe | |
DE3128055C2 (en) | Cross mill stand without mandrel for seamless metal pipes | |
DE1752349A1 (en) | Process for the production of thin-walled pipes | |
DE747860C (en) | Roller push bench for the production of hollow bodies | |
DE102011000845B4 (en) | Method for bending and axial upsetting of a pipe and device for this purpose | |
DE2718219B2 (en) | Calibration for the work rolls of a cross roll stand | |
EP2959983B1 (en) | Method of manufacturing seamless hollow ingot of steel | |
AT393805B (en) | METHOD FOR THE PRODUCTION OF PIPE TUBES AND THORN OR PLUGLESS BEEPING ROLLING DEVICES FOR IMPLEMENTING THE METHOD | |
DE69208443T2 (en) | Cross rolling process and cross rolling mill | |
DE1427915A1 (en) | Method and device for manufacturing seamless tubes | |
EP2604351A1 (en) | Rolling of profiles | |
DE2542313A1 (en) | PROCESS FOR ROLLING METALLIC BLANKS | |
DE2261575A1 (en) | PROCESS AND DEVICE FOR ALIGNING LONG ELEMENTS | |
DE102010047868B4 (en) | Method and device for producing a hollow block from a block | |
DE102016007550B4 (en) | Method and apparatus for reducing ovality of a structural element having a substantially circular cross-section | |
DE102008061141A1 (en) | Method for producing seamless pipes by means of a three-roll bar rolling mill | |
EP1500441B1 (en) | Rolling mill for the fabrication of seamless tubes | |
DE202010004910U1 (en) | Rolling tool, in particular for a roll-segment thread rolling machine | |
DE102017115285A1 (en) | Flexible folding tool | |
EP2683506B1 (en) | Process and device for producing a metallic strip | |
DE809303C (en) | Hot forming rolling of studs or similar parts | |
DE4333284C2 (en) | Process for producing a hollow block from metal | |
DE1552178A1 (en) | Rolling reduction of ring wall thickness |
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 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
17P | Request for examination filed |
Effective date: 20160304 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B21B 19/04 20060101AFI20160715BHEP |
|
INTG | Intention to grant announced |
Effective date: 20160811 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 860785 Country of ref document: AT Kind code of ref document: T Effective date: 20170115 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: RO Ref legal event code: EPE |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502015000493 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20170111 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 3 |
|
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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170111 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2621570 Country of ref document: ES Kind code of ref document: T3 Effective date: 20170704 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170411 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170111 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170111 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170111 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170412 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170511 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170511 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170111 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170111 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170411 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502015000493 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170111 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170111 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170111 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170111 |
|
26N | No opposition filed |
Effective date: 20171012 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170111 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170111 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170612 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170612 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20170630 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 4 |
|
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: 20170630 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170111 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
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: 20180630 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180630 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20150612 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170111 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170111 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20190612 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170111 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190612 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170111 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20210618 Year of fee payment: 7 Ref country code: FR Payment date: 20210622 Year of fee payment: 7 Ref country code: IT Payment date: 20210625 Year of fee payment: 7 Ref country code: CZ Payment date: 20210610 Year of fee payment: 7 Ref country code: RO Payment date: 20210603 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: PL Payment date: 20210608 Year of fee payment: 7 Ref country code: SE Payment date: 20210618 Year of fee payment: 7 Ref country code: AT Payment date: 20210621 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20210826 Year of fee payment: 7 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502015000493 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RO Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220612 Ref country code: CZ Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220612 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: EUG |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 860785 Country of ref document: AT Kind code of ref document: T Effective date: 20220612 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220613 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220630 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220612 |
|
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: 20230103 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20230728 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220612 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220612 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220613 |