EP0154030B1 - Dispositif d'élargissement des extrémités de tubes - Google Patents

Dispositif d'élargissement des extrémités de tubes Download PDF

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Publication number
EP0154030B1
EP0154030B1 EP84116152A EP84116152A EP0154030B1 EP 0154030 B1 EP0154030 B1 EP 0154030B1 EP 84116152 A EP84116152 A EP 84116152A EP 84116152 A EP84116152 A EP 84116152A EP 0154030 B1 EP0154030 B1 EP 0154030B1
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EP
European Patent Office
Prior art keywords
expanding device
pipe
calibrating ring
brought
ring
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
Application number
EP84116152A
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German (de)
English (en)
Other versions
EP0154030A1 (fr
Inventor
Helmut Mechtold
Robert.Dipl.-Ing.(Fh) Weber
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.)
Siemens AG
Original Assignee
Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT84116152T priority Critical patent/ATE35921T1/de
Publication of EP0154030A1 publication Critical patent/EP0154030A1/fr
Application granted granted Critical
Publication of EP0154030B1 publication Critical patent/EP0154030B1/fr
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/02—Enlarging

Definitions

  • the invention relates to an expanding device for pipe ends with a central insert body.
  • an expanding device for pipe ends which has a central insert body and pressure pistons which are arranged on the outer circumference and can be brought into engagement with the inner circumference of the pipe to be expanded and can be synchronously adjusted.
  • These pressure stamps are designed as strips which are pressed outwards by an elastic cylindrical bellows.
  • the pressure rams mounted in the insert body are assigned a calibration ring that determines their maximum outer circumference on the outside of the pipe to be expanded.
  • the pipe end can be brought to a predetermined outer diameter, whereby a round outer surface can be achieved.
  • the inner surface of the pipe end machined with the known expanding device is out of round. The consequence of this is that the inner edges of two pipe ends to be connected to one another are offset at the joints.
  • thick-walled and highly stressed pipes of larger diameter larger than 200 mm
  • a widening device is also known in which the pipe end can be widened by means of a conical pressure stamp which can be displaced axially relative to the pipe (GB-A-2 066 122).
  • the pressure stamp has three widening jaws, each covering one third of the inner circumference of the tube to be widened.
  • This device can also be used to widen thick-walled pipe ends.
  • the device is designed as a stationary machine and is not suitable for on-site installation due to its high weight and its considerable dimensions.
  • it is a peculiarity of this device that it requires considerable experience of the operating personnel in order to expand a pipe to a certain predetermined inside diameter.
  • the invention is based on the object of developing a widening device for pipe ends which produces defined inner diameters during widening and largely avoids out-of-roundness of the inner surface.
  • the expansion device should also be easy to use. In particular, it should be possible to expand it quickly and reliably to a specific, predeterminable inner circumference. In addition, the expansion device should be manageable on site.
  • the area of application of the expansion device can be significantly expanded if the calibration ring is designed to accommodate insert rings of different inner diameters. In this case, different pipe sizes or expansion sizes can be covered with one and the same calibration ring and a set of insert rings.
  • a central expansion can be achieved if the calibration ring is centered on the insert body and this insert body can in turn be fastened centered on a previously known pipe centering device inserted in the pipe.
  • each plunger can be continuously limited by means of a wedge-shaped stop bolt, which can be adjusted transversely to its guide and axially to the insert body by means of a longitudinal slot in the plunger.
  • a particularly clean expansion form is obtained if the pressure stamps in the insert body are arranged inclined up to 10 degrees or up to the limit of the static friction angle with respect to a plane oriented perpendicular to the pipe axis. In this way, step impressions of the pressure stamp on the inner tube wall are avoided.
  • FIG. 1 and FIG. 2 the individual pressure stamps 2 to 14 of the expanding device 15, which bear against the inside wall of the pipe end 1 to be expanded, can be clearly seen.
  • the central bore 16 of the insert body 17 of the expansion device 15 carrying the pressure rams can also be clearly seen here.
  • the adjusting screws 18 to 41 protrude for the stroke limitation of the individual pressure stamps.
  • the insert body 17, as can also be seen in FIG. 2, is provided on one side with an approximately 42 mm wide gap 42. This gap is shown filled in in Figure 1 and in Figure 2 by a fitting body 43.
  • This fitting body carries a projecting connecting lug 44, with which it can be connected during axial insertion into the gap 42 via a hydraulic connector 45 to the central hydraulic line 46 running in the insert body 17 for the remaining pressure stamps.
  • This central hydraulic line can be connected to a hydraulic supply line 48 via a further hydraulic connector 47.
  • a further supply hose 49 for a pipe centering device (not shown) located deeper in the pipe is shown through the central bore 16 in the illustration in FIG. 1.
  • FIGS. 2 and 3 The internal structure of the insert body 17 is best illustrated in FIGS. 2 and 3.
  • the pressure rams 2 to 14 arranged radially on the circumference of the insert body 17 can be seen, and the bores 50 to 54 of the insert body, which are stepped in the exemplary embodiment, in the manner of a piston are radially displaceable.
  • These plungers, which are adapted to the diameter of the bores 50 to 54, have annular grooves 55 to 66, in each of which an O-ring 67 to 78 is inserted for sealing.
  • FIG. 2 also clearly shows that the pressure punches 2 to 14 have a longitudinal slot 79 to 84 in their smaller diameter, through which a stop pin 85 to 90 is passed.
  • the stroke of the pressure ram is limited in both directions by this stop bolt.
  • the stop bolts have a lower wedge-shaped edge 91 which has the same inclination to the axis of symmetry of the pressure stamp as the end of the longitudinal slot 84 in the pressure stamp 11 facing them.
  • the stop bolt 90 can be adjusted by means of an adjusting screw 26 depending on the position Screw in different lengths into the longitudinal slot 84 of the pressure stamp 11.
  • the hydraulic connector 47 for the central hydraulic line 46 is shown in section in FIG.
  • the pressure stamps 11 are not exactly radially inclined, but rather out of the section plane of FIG. 2 perpendicular to the axis of symmetry 92 of the insert body by approximately 5 degrees to the tube. Because the surfaces of the pressure stamps 2 to 14 facing the inner wall of the pipe end 1 to be expanded, as shown in FIG. 2, have a cylindrical curvature which has approximately the same radius as the inner radius of the pipe to be expanded, the consequence of this is that their pipe-facing, the Inner edges facing the inner tube wall when expanding the pipe end, do not press into the pipe inner wall. The expansion contour achieved thus remains funnel-shaped.
  • the stop pins 85 to 90 not only limit the maximum stroke of the pressure rams, but also prevent them from rotating about their longitudinal axis. As a result, the cylindrical curvature of the outer surface of the pressure stamp remains aligned with the curvature of the inner tube wall.
  • the calibration ring 93 which is pushed over the expansion device 15 in the sectional view in FIG. 3, extends with its stop surface 94 over the pressure rams 2 to 14, which project over the pipe end 1 during operation.
  • the calibration ring 93 limits the maximum stroke of the pressure stamps 2 to 14, provided that this limit was not previously made by the stop bolts 85 to 90.
  • the radius of the cylindrical curvature of the parts of the pressure stamps 2 to 14 which can be brought into engagement with the calibration ring 93 is pivoted back by that 5 degrees relative to the axis of symmetry of the pressure stamps, which pivoted them out of the plane oriented perpendicular to the axis of symmetry 92 of the insert body 17.
  • FIG. 4 shows a top view of that side of the expanding device 15 on which its gap 42 is closed by the fitting body 43 used.
  • the fitting body 43 inserted in the gap in the axial direction, the. Cross section can be seen in Figure 2, is prevented on both sides by a guide edge 95, 96, which fits into a corresponding guide groove 97, 98 of the insert body 17, to migrate radially.
  • the connecting lug 44 aligned parallel to the axis of symmetry 92 of the insert body 17 carries, as shown in FIG. 4, the hydraulic connector 45.
  • This hydraulic connector fits a corresponding connector counterpart of the insert body 17, which is connected to the central hydraulic line 46 (FIG. 3) inside the insert body connected.
  • the smaller pipe end or both pipe ends can be expanded to a predetermined size with the expansion device 15.
  • the expanding device only needs to be inserted into the pipe end to be expanded. If a pipe centering device had already been inserted in this pipe end, it can remain in the pipe and only the fitting body 43 is pulled out of the gap 42 of the insert body 17 and this is then pushed with the gap 42 over the supply hose 49 for the pipe centering device located in the pipe.
  • the fitting body 43 can be inserted parallel to the axis of symmetry 92 of the insert body 17 until the connector of the central hydraulic line of the insert body snaps into the hydraulic connector on the connecting lug 44 of the fitting body 43.
  • the pressure stamp 8 of the fitting body is connected to the central hydraulic line 46 of the insert body.
  • the pressure rams 2 to 14 are pressed against the inner wall of the pipe end 1 to be expanded by increasing the hydraulic pressure by means of a hand pump (not shown). It should be ensured that the pressure rams protrude approximately half from the pipe end in the axial direction.
  • the calibration ring 93 is placed over these above pressure stamps. This limits the stroke of the pressure ram when the pipe end is widened and ensures that the edge of the pipe end is widened to a circular radius.
  • the expansion process has become problem-free for the operating personnel, because when the hydraulic system is manually inflated, a clear resistance can be felt as soon as the pressure stamp not only comes into contact with the pipe wall but also with the calibration ring 93. Due to the large number of pressure stamps used - twenty-three in the exemplary embodiment - and the rigidity of the much thicker calibration ring 93, a completely round expansion of the pipe end 1 is ensured.
  • the pressure stamps can also be individually limited in their stroke by moving the stop bolts 85 to 90 parallel to the axis of symmetry 92 of the insert body 17.
  • the hydraulic pressure or the pump resistance increases as soon as the inner wall of the longitudinal slots 79 to 84 come to rest against the stop bolts 85 to 90.
  • the exact placement of the individual pressure stamps 2 to 14 on the inner tube wall or on the calibration ring can be aligned by means of small, if necessary embedded in the end wall of the calibration ring 93, aligned approximately parallel to its axis of symmetry Observation holes 99 (FIG. 3) can also be checked visually.
  • FIG. 5 shows a particularly expedient shape for a pressure stamp 100, which makes it easier to observe the system on the calibration ring 101.
  • the outer circumference of the pressure stamp is L-shaped, with a seat surface 102 for the installation of the pipe end 103 and an end surface 104 for contact with the calibration ring 101.
  • the difference in height between the seat surface 102 and the end surface 104 is equal to or greater than the largest tube wall thickness to be expanded with this pressure stamp.
  • the seat surface of the pressure ram 100 is intended to rest on the pipe end 103 to be widened
  • the end face 104 is intended to rest against the calibration ring 101 or to rest against an insert ring 105 to be inserted in the calibration ring.
  • the calibration ring 101 itself carries one inner circumferential shoulder 106 which fits into a corresponding extension ring 107 of the insert body 108. In the outer circumferential shoulder 109 of the calibration ring 101, insert rings 105 of the same diameter but of different thickness can be inserted.
  • this insert body is in turn centrally coupled to a guide 143 (FIG. 3) of a pipe centering device (not shown) located further inside the pipe.
  • This pipe centering device must then - after. Removal of the expanding device - remain in the two pipe ends and keep them centered until the weld is sufficiently firm. In this case, even in the case of non-round pipes and pipes with an uneven wall thickness, an expansion that is central to the pipe is forced.
  • the use of different insert rings 105 makes it possible to use one and the same calibration ring 101 by varying the insert rings 105 to widen the tube end 103 to different extents or to widen the tube ends of different widths to a certain extent.
  • the area of use of the expansion device can be considerably expanded with one and the same insert body 108 and one and the same calibration ring 101 as well as a set of insert rings 105 with different inner diameters.
  • This can also be achieved in that the pressure stamps 122 - as shown in FIG. 8 - are formed in two parts and the part 144 of the pressure stamp that can be brought into contact with the pipe is replaced by one with a different height.
  • FIG. 6 shows a section through the circumferential outer shoulder 110 of another calibration ring 111, in which the stop dimension can be determined by individually adjustable stop screws 113, which are to be secured with lock nuts 112, instead of by using insert rings of corresponding inner diameter.
  • This calibration ring 111 can also be used for special tasks in which different widening over the circumference is desired.
  • the same expansion tasks that can also be carried out with the calibration ring 101 and with an insert ring 105 in accordance with the exemplary embodiment in FIG. 5 can thus be carried out.
  • the conversion of this quay ring 111 to a new expansion diameter is, however, because of the necessary measurement of the width between the individual stop screws 113, much more complex than with a calibration ring according to FIG. 5, where only the insert ring 105 has to be replaced.
  • FIG. 7 shows a section of another insert body 114, as is indicated for expanding devices for particularly large pipe diameters.
  • the calibration ring 115 is located inside the insert body. It has sawtooth-shaped inclined surface parts 116 to 118 on its inner circumference. These parts can be brought into engagement with correspondingly inclined surface elements 119 of inward projections 120 of the individual pressure stamps 121.
  • the maximum stroke of the pressure stamp 121 and the maximum expansion size of the tube 122 determined thereby are determined according to the rotational position of the calibration ring 115 in the insert body 114. With this device, the stroke of the pressure stamp can be changed particularly quickly.
  • this insert body 114 there is also the possibility of retracting the pressure stamps 121 into their starting position after the expansion process has ended by rotating the calibration ring 115.
  • the initial setting of this calibration ring can be carried out precisely, quickly and easily if the pressure stamp 121 is pressed against a calibration ring 101 (FIG. 5) with an appropriately selected insert ring 105 and then the inner calibration ring 115 until it rests on the inclined surface elements 119 of the extensions 120 turns and locked in this position.
  • FIGS. 8 and 9 show a pressure stamp 122 with an L-shaped cross section, similar to the pressure stamp shown in FIG. 5.
  • a plastic plug 127 is inserted in order to protect the welding lips 123 of the pipe end 124 in the angular corner between the seat surface 125 and the flank leading to the end surface 126.
  • This construction is particularly advantageous when the expansion device for central expansion to the pipe, as indicated in FIG. 3, is coupled to a pipe centering device (not shown) clamped in the pipe and consequently can no longer deflect axially to the pipe.
  • each printing stamp 122 two plastic plugs 127, 131 it is particularly advantageous for each printing stamp 122 two plastic plugs 127, 131 to be arranged side by side. This prevents the pressure stamp 122 from rotating about its longitudinal axis 128 and thus ensures that the pressure stamp cannot press in the welding lip 123 with its side edges.
  • FIG. 10 shows a variant of the pressure stamp construction of FIGS. 8 and 9.
  • the pressure stamp 132 is drilled out in the area of its angle between the seat surface 133 and the flank leading to the end surface 134 and is inserted into this bore 135 by a compression spring 136 in the direction of the seat surface to pressed round material 137 used.
  • This round material has a wider collar 138, which limits the protrusion of the round material on the side of the seat surface 132 to a few millimeters.
  • a bushing 139 is welded to the side of the bore 135 facing away from the seat surface. It is provided with a screw cap 140 on which the compression spring 136 is supported.
  • the round material 137 can be pressed back against the force of the compression spring 136 when the axial compression forces increase at the end edge of the pipe end and thus protect the welding lip 142 from damage in a similar manner to the plastic plugs 127, 131 of the exemplary embodiment in FIGS. 8 and 9.

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  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Road Signs Or Road Markings (AREA)
  • Automatic Assembly (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Processing Of Terminals (AREA)
  • Processing Of Meat And Fish (AREA)
  • Insulators (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Road Paving Structures (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Tubes (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Electric Cable Installation (AREA)

Claims (28)

1. Dispositif d'élargissement des extrémités de tubes, comportant un corps formant insert central (17, 108, 114, 130), des poinçons (2 à 14, 100, 121, 122, 132), réglables de façon synchrone, disposés sur le pourtour extérieur et pouvant être amenés en prise avec le pourtour intérieur du tube devant être élargi, et dans lequel aux poinçons (2 à 14, 100, 121, 122, 132) montés dans le corps formant insert (17, 108, 114, 130) se trouve associée une bague de calibrage (93, 101, 111, 115) déterminant le pourtour extérieur maximum des poinçons, caractérisé par le fait que les poinçons (2 à 14, 100, 121, 122, 132) peuvent être appliqués, par leur pourtour extérieur, directement contre l'anneau de calibrage (93, 101, 111, 115) et contre la paroi intérieure du tube (1, 103, 122, 124, 141).
2. Dispositif d'élargissement suivant la revendication 1, caractérisé par le fait que l'anneau de calibrage (93, 101, 111) est un disque annulaire comportant des épaulements périphériques extérieurs (94, 109, 110), qui font saillie en direction du dispositif d'élargissement (15).
3. Dispositif d'élargissement suivant la revendication 1, caractérisé par le fait que la bague de calibrage (101) est conçue de manière à recevoir des bagues d'insertion (105) possédant des diamètres inférieurs différents.
4. Dispositif d'élargissement suivant la revendication 3, caractérisé par le fait que la bague de calibrage (101, 111) peut être fixée en étant centrée sur le corps formant insert (108, 130).
5. Dispositif d'élargissement suivant la revendication 1, caractérisé par le fait que la bague de calibrage (111) comporte, sur son pourtour extérieur, des butées (113) réglables de façon individuelle et pouvant être amenées en prise avec un poinçon opposé respectif (100, 122, 132).
6. Dispositif d'élargissement suivant la revendication 5, caractérisé par le fait qu'on utilise comme butées (113), des vis de réglage pouvant être bloquées par l'intermédiaire d'un contre- écrou (112).
7. Dispositif d'élargissement suivant la revendication 1, caractérisé par le fait que la bague de calibrage (115) est montée à l'intérieur du corps formant insert (114) et que les poinçons (121) peuvent être amenés en prise, par des appendices saillants (120), avec la bague de calibrage (115).
8. Dispositif d'élargissement suivant la revendication 7, caractérisé par le fait que par suite du décalage de la bague de calibrage (115) par rapport au corps formant insert (114), des zones (116, 117, 118) de la bague de calibrage (115), situées à une distance radiale différente de l'axe de symétrie (92), peuvent être amenées en prise avec les appendices saillants (120).
9. Dispositif d'élargissement suivant la revendication 8, caractérisé par le fait que les appendices .saillants (120) portent des épaulements (119), qui peuvent être amenés en prise avec la face intérieure de la bague de calibrage (115).
10. Dispositif d'élargissement suivant la revendication 9, caractérisé par le fait que les surfaces intérieures (116, 117, 118) de la bague de calibrage (115), qui peuvent être amenées en prise avec les épaulements (119) des appendices saillants (120), sont biseautées avec une forme en dents de scie.
11. Dispositif d'élargissement suivant la revendication 9, caractérisé par le fait que les surfaces intérieures (116, 117, 118), qui peuvent être amenées en prise avec les épaulements (119) des appendices saillants (120), de la bague de calibrage (115) ont des diamètres intérieurs qui varient conformément à une disposition conique dans la direction axiale, et la bague de calibrage (115) peut être déplacée axialement par rapport au corps formant insert (114).
12. Dispositif d'élargissement suivant la revendication 1, caractérisé par le fait que la bague de calibrage (93) comporte des perçages (99), à travers lesquels on peut observer la mise en place des poinçons (2 à 14) sur le tube (1) ou sur la bague de calibrage (93).
13. Dispositif d'élargissement suivant la revendication 1, caractérisé par le fait que les poinçons (2 à 14, 100, 121, 122, 132) font partie d'un piston déplaçable dans un vérin hydraulique ou pneumatique (50 à 54).
14. Dispositif d'élargissement suivant la revendication 13, caractérisé par le fait que les vérins pneumatiques ou hydrauliques (50 à 54) sont disposés en forme d'étoile dans le corps formant insert (17, 108. 114, 130).
15. Dispositif d'élargissement suivant la revendication 1, caractérisé par le fait que les poinçons situés dans chaque vérin peuvent être chargés sur leurs deux faces.
16. Dispositif d'élargissement suivant la revendication 1, caractérisé par le fait que la course de chaque poinçon (2 à 14) peut être limitée de façon continue par l'intermédiaire d'un coin (85 à 91) déplaçable axialement par rapport au corps formant insert (17), à travers une fente (79 à 84) ménagée dans le poinçon, transversalement par rapport au guidage de ce dernier.
17. Dispositif d'élargissement suivant la revendication 1, caractérisé par le fait qu'au moins un autre ensemble de poinçons possédant une hauteur différente est associé à un corps formant insert pour l'élargissement de la zone d'insertion.
18. Dispositif d'élargissement suivant la revendication 17, caractérisé par le fait que les poinçons (122) sont réalisés en deux éléments et que l'élément (144) du poinçon, qui peut être appliqué contre le tube, peut être remplacé par un même élément du poinçon possédant une autre hauteur ou un autre contour.
19. Dispositif d'élargissement suivant la revendication 1, caractérisé par le fait que les poinçons (2 à 14, 100, 121, 122, 132) sont disposés dans le corps formant insert (17, 108, 114, 130) en étant inclinés en direction du tube sur un angle allant jusqu'à 10 degrés par rapport à un plan perpendiculaire à l'axe (92) du tube.
20. Dispositif d'élargissement suivant la revendication 1, caractérisé par le fait que les surfaces extérieures des poinçons (100, 121, 122, 132) sont réalisées en forme de L, les épaulements intérieurs (102. 125, 133) pouvant être appliqués contre la paroi du tube et la surface frontale supérieure (104, 126, 134) peut être appliquée contre la bague de calibrage (101).
21. Dispositif d'élargissement suivant la revendication 1, caractérisé par le fait que le corps formant insert (17, 108, 114, 130) comporte au moins une fente (42) possédant une largeur de dix millimètres et pouvant être obturée par un corps ajusté (43) pouvant être retiré.
22. Dispositif d'élargissement suivant la revendication 21, caractérisé par le fait que le corps ajusté (43) est bloqué dans la fente (42), selon une liaison par formes complémentaires, contre tout décalage radial.
23. Dispositif d'élargissement suivant la revendication 22, caractérisé par le fait que le corps ajusté (43) porte au moins un poinçon particulier (8) pouvant être raccordé à la canalisation d'alimentation (46) des autres poinçons.
24. Dispositif d'élargissement suivant la revendication 1, caractérisé par le fait que le corps formant insert peut être constitué par la réunion de plusieurs segments qui peuvent être bloqués réciproquement contre tout déplacement radial.
25. Dispositif d'élargissement suivant la revendication 24, caractérisé par le fait que les segments du corps formant insert peuvent être bloqués contre un déplacement axial réciproque.
26. Dispositif d'élargissement suivant la revendication 1, caractérisé par le fait que la bague de calibrage est réalisée en plusieurs éléments de manière à pouvoir être emmanchée par-dessus un tuyau d'alimentation (49) et que les éléments peuvent être reliés entre eux selon une liaison par formes complémentaires en étant disposés les uns au-dessous des autres dans la direction de traction.
27. Dispositif d'élargissement suivant la revendication 1, caractérisé par le fait que le corps formant insert (17, 108, 114, 130) comporte des moyens permettant sa fixation avec centrage sur un dispositif de centrage du tube inséré dans le tube devant être élargi.
EP84116152A 1984-03-05 1984-12-21 Dispositif d'élargissement des extrémités de tubes Expired EP0154030B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84116152T ATE35921T1 (de) 1984-03-05 1984-12-21 Aufweitvorrichtung fuer rohrenden.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3408070 1984-03-05
DE19843408070 DE3408070A1 (de) 1984-03-05 1984-03-05 Aufweitvorrichtung fuer rohrenden

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP87104897A Division EP0240022A3 (fr) 1984-03-05 1984-12-21 Dispositif d'élargissement des extrémités de tubes
EP87104897.1 Division-Into 1987-04-02

Publications (2)

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EP0154030A1 EP0154030A1 (fr) 1985-09-11
EP0154030B1 true EP0154030B1 (fr) 1988-07-27

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EP87104897A Withdrawn EP0240022A3 (fr) 1984-03-05 1984-12-21 Dispositif d'élargissement des extrémités de tubes
EP84116152A Expired EP0154030B1 (fr) 1984-03-05 1984-12-21 Dispositif d'élargissement des extrémités de tubes

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EP87104897A Withdrawn EP0240022A3 (fr) 1984-03-05 1984-12-21 Dispositif d'élargissement des extrémités de tubes

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Country Link
US (1) US4667500A (fr)
EP (2) EP0240022A3 (fr)
JP (1) JPS60206543A (fr)
AT (1) ATE35921T1 (fr)
DE (2) DE3408070A1 (fr)
ES (1) ES8606034A1 (fr)
FI (1) FI844976L (fr)
NO (1) NO163476C (fr)
ZA (1) ZA851610B (fr)

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FI880529A (fi) * 1987-07-22 1989-01-23 Siemens Ag Anordning foer dragande av en roeraenda medelst kallbearbetning.
CA2419878A1 (fr) * 2002-02-25 2003-08-25 James Creed Dispositif mecanique d'evasement de piliers

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US3220719A (en) * 1962-05-02 1965-11-30 John G Luker Expansible mandrel
GB1225775A (fr) * 1967-06-02 1971-03-24
GB1201693A (en) * 1967-09-01 1970-08-12 Kocks Wermelskirchen G M B H Apparatus for calibrating pipes
US3754720A (en) * 1969-07-16 1973-08-28 Gulf & Western Ind Prod Co Expandible mandrel assembly
US3795035A (en) * 1972-04-26 1974-03-05 Texaco Inc Mechanisms for swaging the ends of pipes
AU467272B2 (en) * 1973-02-27 1975-11-27 Tubemakers Of Australia Limited Self releasing die means to swell an end portion ofa pipe
US4007622A (en) * 1975-05-01 1977-02-15 Abram Isaevich Galperin Device for bending thin-walled pipes
DE2650691C3 (de) * 1976-11-05 1980-01-24 G. Siempelkamp Gmbh & Co, 4150 Krefeld Vorrichtung zum Außenkalibrieren von Rohren
DE2654102C2 (de) * 1976-11-29 1984-01-05 Rothenberger GmbH & Co Werkzeuge-Maschinen KG, 6000 Frankfurt Expansionskopf für Rohraufweitegeräte mit auswechselbaren Expansionsbacken
US4212186A (en) * 1978-10-25 1980-07-15 Blattler Joseph F Pipe expander
US4306134A (en) * 1979-08-01 1981-12-15 Midcon Pipeline Equipment Co. Arc welding pipe apparatus
DE2944435A1 (de) * 1979-11-03 1981-05-14 Carl-Ludwig 5650 Solingen Pohler Kalibriermaschine fuer rohre
GB2066122B (en) * 1979-12-20 1983-05-18 Vickers Ltd Sizing a tube end
JPS6320423Y2 (fr) * 1981-01-29 1988-06-07
JPS583735A (ja) * 1981-06-29 1983-01-10 Nippon Kokan Kk <Nkk> 管端拡管機
JPS5897413A (ja) * 1981-12-01 1983-06-09 Nippon Steel Corp Ｈ型鋼圧延ロ−ル用三層スリ−ブ

Also Published As

Publication number Publication date
FI844976A0 (fi) 1984-12-17
ES8606034A1 (es) 1986-04-16
NO163476B (no) 1990-02-26
DE3472904D1 (en) 1988-09-01
NO850752L (no) 1985-09-06
NO163476C (no) 1990-06-06
US4667500A (en) 1987-05-26
EP0154030A1 (fr) 1985-09-11
ES540944A0 (es) 1986-04-16
ATE35921T1 (de) 1988-08-15
JPH0478370B2 (fr) 1992-12-11
ZA851610B (en) 1985-10-30
EP0240022A3 (fr) 1990-02-28
EP0240022A2 (fr) 1987-10-07
FI844976L (fi) 1985-09-06
DE3408070A1 (de) 1985-09-05
JPS60206543A (ja) 1985-10-18

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