EP1985385B1 - Rouleau a disque et procede de fabrication d'un tuyau sans soudure utilisant celui-ci - Google Patents

Rouleau a disque et procede de fabrication d'un tuyau sans soudure utilisant celui-ci Download PDF

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Publication number
EP1985385B1
EP1985385B1 EP07714293.3A EP07714293A EP1985385B1 EP 1985385 B1 EP1985385 B1 EP 1985385B1 EP 07714293 A EP07714293 A EP 07714293A EP 1985385 B1 EP1985385 B1 EP 1985385B1
Authority
EP
European Patent Office
Prior art keywords
disk roll
ridge
billet
disk
roll
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.)
Ceased
Application number
EP07714293.3A
Other languages
German (de)
English (en)
Other versions
EP1985385A4 (fr
EP1985385A1 (fr
Inventor
Kazuhiro Shimoda
Tomio Yamakawa
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel and Sumitomo Metal Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel and Sumitomo Metal Corp filed Critical Nippon Steel and Sumitomo Metal Corp
Publication of EP1985385A1 publication Critical patent/EP1985385A1/fr
Publication of EP1985385A4 publication Critical patent/EP1985385A4/fr
Application granted granted Critical
Publication of EP1985385B1 publication Critical patent/EP1985385B1/fr
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B21B27/03—Sleeved rolls
    • B21B27/035—Rolls for bars, rods, rounds, tubes, wire or the like
    • 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
    • B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling

Definitions

  • the present invention relates to a disk roll and a method of manufacturing a seamless pipe or tube using the same, and the invention more specifically relates to a disk roll for use in a piercer and a method of manufacturing a seamless pipe using the same.
  • a seamless pipe is produced by piercing and rolling a billet using a piercer.
  • the piercer 100 includes two disk rolls 200 provided one above the other around the pass center O and two inclined rolls 300 provided side by side around the pass center O.
  • the outer circumferential surface 200F of the disk roll 200 is recessed in cross section.
  • a billet 400 in the process of piercing and rolling advances as it is rotated in the circumferential direction by the inclined rolls 300.
  • the outer circumferential surface 200F of the disk roll 200 contacts and restricts the billet 400 to suppress the swinging of the billet, so that the piercing and rolling process is stabilized.
  • the outer diameter of the side surface 200SI corresponding to the inlet side of rotation of the billet 400 rotated in the circumferential direction is greater than the outer diameter of the side surface 200SO corresponding to the outlet side of rotation of the billet 400.
  • the billet 400 being rotated protrudes from the gaps G1 and G2.
  • the protrusion is called "peeling phenomenon.”
  • the outer diameter of the side surfaces 200SI on the rotation inlet side is enlarged and the gaps G1 and G2 between the surfaces and the inclined rolls 300 are narrowed, so that the peeling phenomenon is prevented.
  • the outer diameter of the side surface 200SO on the rotation outlet side is substantially equal to that of the side surface 200SI on the rotation inlet side, the billet 400 is excessively restricted by the disk rolls 200, which makes it harder for the billet to rotate in the circumferential direction. Therefore, the outer diameter of the side surface 200SO is smaller than that of the side surface 200SI.
  • the disk roll 200 includes a disk-shaped shaft member 201 having a driving shaft 203 in its center and a circular ring member 202 mounted to the outer circumference of the shaft member 201 by shrinkage fitting.
  • the outer circumferential surface 200F of the circular ring member 202 is worn as it contacts the billet 400 in the process of piercing and rolling.
  • the worn circular ring member 202 is replaced by a new one.
  • the circular ring member 202 has a large diameter about in the range from 1 m to 4 m. Therefore, the circular ring member 202 is not easy to transport, and it takes a large work load to take out the member from the shaft member 201 and mount a new one to the shaft member 201.
  • the circular ring member 202 is normally integrally molded by forging a billet. This complicates the manufacturing process and pushes up the manufacturing cost.
  • JP 5-277511 A and JP 8-215714 A both disclose invention related to a disk roll.
  • the invention disclosed by Patent Document 1 is directed to reducing the gap between the roll for piercing and the disk roll and the invention disclosed by Patent Document 2 is directed to piercing and rolling a thin hollow shell with a high pipe expansion ratio. In other words, they are not directed to a solution to the difficulty in manufacturing and transporting a disk roll.
  • JP 362-189803 U discloses a disk roll for use in a piercer comprising a disk-shaped shaft member including a driving shaft of said disk roll in its center and a circular ring member mounted to an outer circumference of said shaft member and having an outer circumferential surface recessed in cross section, said circular ring member including a plurality of arcuate members arranged in the circumferential direction.
  • a disk roll according to the invention is for use in a piercer.
  • the disk roll includes a shaft member and a circular ring member.
  • the shaft member has the driving shaft of the disk roll in its center and has a disk shape.
  • the circular ring member is mounted to the outer circumference of the shaft member and has an outer circumferential surface recessed in cross section.
  • the circular ring member includes a plurality of arcuate members arranged in the circumferential direction.
  • the circular ring member of the disk roll according to the invention includes the plurality of arcuate members arranged in the direction of the same circumference, the circular ring member does not have to be integrally molded. This can reduce the manufacturing cost.
  • the circular ring member is divided into the arcuate members and therefore can easily be transported.
  • the outer diameter of one side surface of the circular ring member is larger than the outer diameter of the other side surface.
  • the arcuate members each have an inner surface ridge formed along an edge of the inner circumferential surface on the side surface side having a larger outer diameter.
  • the shaft member has an outer surface ridge formed along one side edge of the outer circumferential surface and fitted to the inner surface ridge.
  • One of the inner and outer surface ridges has preferably a screw hole at a surface opposed to the other ridge.
  • the other of the inner and outer surface ridges has preferably a through hole in a position opposed to the screw hole, and a screw is preferably inserted into the through hole and the screw hole to securely mount the arcuate member to the shaft member.
  • the inner surface ridge of the arcuate member is fitted to the outer surface ridge of the shaft member.
  • a billet advances from the side surface of the disk roll having a larger outer diameter (hereinafter referred to as "inlet side surface”) to the side surface having a smaller outer diameter (hereinafter referred to as “outlet side surface”). Therefore, during the piercing and rolling, force directed from the inlet side surface to the outlet side surface acts upon the arcuate members, so that the inner surface ridge continues to be energized toward the outer surface ridge. Therefore, it is unlikely that the arcuate members come off from the shaft member and are damaged during the piercing and rolling.
  • One of the inner and outer surface ridges preferably has a fitting ridge formed in the circumferential direction at a surface opposed to the other ridge.
  • the other of the inner and outer surface ridges has a groove fitted to the fitting ridge in a position opposed to the fitting ridge.
  • the outer surface ridge preferably has the screw hole at a surface opposed to the inner surface ridge and the inner surface ridge has the through hole in a position opposed to the screw hole.
  • the diameter of the through hole is greater than the diameter of a screw head from the inlet side to a prescribed position deeper than the height of the screw head and smaller than the diameter of the screw head from the prescribed position to the outlet side.
  • the screw head can be fitted inside the inner surface ridge and does protrude from the inlet side surface.
  • the inlet side surface of the disk roll In order to prevent a billet in the process of piercing and rolling from being subjected to the peeling phenomenon, the inlet side surface of the disk roll must be close to the inclined rolls, so that the gaps between the disk rolls and the inclined rolls are reduced. If the screw head protrudes from the inlet side surface, the gaps cannot be reduced.
  • the screw head is fitted inside the inner surface ridge and thus prevented from protruding from the inlet side surface, so that the gaps between the disk rolls and the inclined rolls can be reduced, which suppress the generation of peeling.
  • Both end surfaces of each of the arcuate members are preferably inclined to the inner circumferential surface and adjacent arcuate members are fitted to each other by their opposed end surfaces.
  • a method of manufacturing a seamless pipe or tube according to the invention uses a piercer having inclined rolls and the above-described disk rolls.
  • the method of manufacturing a seamless pipe according to the invention includes the steps of determining whether the advancing speed of a billet determined by the number of revolutions of the inclined roll is greater than the rotation speed of the disk roll, providing, in the piercer, disk rolls in which both end surfaces of each of the arcuate members are inclined from the outer circumferential surface side opposite to the rotation direction of the disk roll towards the inner circumferential side if the advancing speed of the billet is higher than the rotation speed of the disk roll and disk rolls in which both end surfaces of each of the arcuate members are inclined from the inner circumferential surface side opposite to the rotation direction of the disk roll towards the outer circumferential side if the advancing speed of the billet is lower than the rotation speed of the disk roll, based on the determination result, and piercing and rolling the billet into a seamless pipe or tube using the piercer including the disk roll.
  • arcuate members to apply are determined in consideration of the result of comparison between the advancing speed of the billet and the rotation speed of the disk roll. Therefore, if a gap forms at the end surface contact part of adjacent arcuate members, the gap extends in the direction opposite to the relative speed of the billet to the disk roll from the outer circumferential surface to the inner circumferential surface. Consequently, a part of the billet can be prevented from coming into the gap during the piercing and rolling.
  • a disk roll 1 is provided in a piercer 100 in place of the disk roll 200 shown in Figs. 10 and 11 .
  • the disk roll 1 includes a shaft member 10 and a circular ring member 20 fitted to the outer circumference of the shaft member 10.
  • the shaft member 10 has a disk shape and has the driving shaft 16 of the disk roll 1 in its center.
  • a plurality of through holes 17 are provided at equal intervals in the circumferential direction in order to reduce the weight of the disk roll 1 as a whole.
  • the circular ring member 20 has a circular ring shape and is fitted to the shaft member 10.
  • the outer circumferential surface of the circular ring member 20 has a recessed arcuate shape in cross section. Note that the cross sectional shape may be a recessed groove shape.
  • the outer circumferential surface contacts a billet in the process of piercing and rolling and can restrict the billet to some extent, so that the surface serves as a guide.
  • inlet side surface 1SI the side surface corresponding to the rotation inlet side of the billet rotated in the circumferential direction
  • outlet side surface the side surface corresponding to the rotation outlet side of the billet
  • the circular ring member 20 includes a plurality of arcuate members 30 arranged in a line in the circumferential direction.
  • the arcuate members 30 are each secured to the outer circumference of the shaft member 10 using screws.
  • the circular ring member 20 of the disk roll 1 is made of the plurality of arcuate members 30 and therefore does not have to be integrally molded. Therefore, the manufacturing cost can be reduced. In addition, the circular ring member can be transported and mounted/detached to/from the shaft member 10 more easily as it is divided into the arcuate members 30.
  • the circular ring member 20 is divided into the arcuate members 30, each of which has arcuate side surfaces.
  • a ridge (hereinafter referred to as “inner surface ridge”) 33 is formed along the edge of the inlet side surface 30SI on the inner circumferential surface 31 of the arcuate member 30.
  • a ridge (hereinafter referred to as “fitting ridge”) 35 is formed along the edge of the inner surface ridge 33, i.e., in the circumferential direction.
  • a ridge (hereinafter referred to as "outer surface ridge") 12 is formed along one side edge and a groove 14 is formed in a position at the fitting surface 13 of the outer surface ridge 12 opposed to the fitting ridge 35.
  • the inner surface ridge 33 of the arcuate member 30 is fitted to the outer surface ridge 12 of the shaft member 10 and the fitting ridge 35 is fitted to the groove 14.
  • the inner surface ridge 33 is provided with through holes 36 that extend to the fitting surface 34 from the inlet side surface 30SI.
  • the outer surface ridge 12 has a screw hole 15 in the position of the fitting surface 13 opposed to the through hole 36. As screws 40 are inserted and threadably fitted to the screw holes 15, the arcuate members 30 are securely mounted to the shaft member 10.
  • three through holes 36 are provided at each of the arcuate members 30 in the circumferential direction of the disk roll 1 but the number of the through holes 36 may be one or more.
  • the billet 400 advances as it rotates from the inlet side surface of the disk roll 1 to the outlet side surface. Therefore, force F0 directed from the inlet side surface 30SI to the outlet side surface 30SO acts upon the arcuate members 30 during the piercing and rolling, so that the inner surface ridge 33 is pressed against the outer surface ridge 12 by the force F0. Therefore, the arcuate members 30 are more securely mounted to the shaft member 10 using the force F0 received from the billet 400 in the process of piercing and rolling. In this way, an excessive load is unlikely to be applied on the screws 40 during the piercing and rolling, and screws 40 are not easily flawed.
  • the screw head 41 of the screw 40 is inserted to the through hole 36.
  • the screw head 41 does not protrude from the inlet side surface 30SI. More specifically, at the through hole 36, the diameter D1 of the through hole 36 from the inlet side surface 30SI, from which the screw 40 is inserted, to the position of a depth L1 longer than the height L0 of the screw head 41 is greater than the diameter D0 of the screw head 41.
  • the diameter D2 of the screw hole 36 from the position of the depth L1 to the fitting surface 34 is smaller than the diameter D0 of the screw head 41.
  • the screw head 41 is fitted inside the inner surface ridge 33 and does not protrude from the inlet side surface 30SI.
  • the inlet side surface 30SI of the disk roll 1 In order to suppress the billet 400 in the process of piercing and rolling from being subjected to the peeling phenomenon, the inlet side surface 30SI of the disk roll 1 must be provided close to the inclined rolls 300, so that the gaps G1 and G2 between the disk roll 1 and the inclined rolls 300 are as small as possible. If the screw heads 41 protrude from the inlet side surface 30SI, the gaps G1 and G2 cannot be reduced for the space corresponding to the protrusion. As the screw heads 41 are fitted inside the inner surface ridge 33, the gaps G1 and G2 can be reduced, and the peeling phenomenon can be suppressed.
  • both end surfaces 37 of each of the arcuate members 30 are flat and inclined with respect to the inner circumferential surface 31.
  • Two adjacent arcuate members 30 are fitted to each other by the opposed end surfaces 37. More specifically, one end surface 37 of each of the arcuate members 30 is inclined at an angle of ⁇ ° (0° ⁇ 180°) with respect to the inner circumferential surface 31 and the other end surface 37 is inclined at an angle of 180- ⁇ ° with respect to the inner circumferential surface 31.
  • the angle of one of the end surfaces 37 is ⁇ ° and the other angle is 180- ⁇ °. Therefore, the end surfaces of adjacent arcuate members 30 are fitted to each other.
  • both end surfaces 37 are inclined with respect to the inner circumferential surface 31, so that a part of the billet 400 can be prevented from coming into the contact part 38 between arcuate members 30 adjacent to each other during the piercing and rolling as will be described.
  • a method of manufacturing a seamless pipe or tube using the disk roll 1 having the structure as described above is as follows.
  • a roll piercer 100 to be used it is determined whether the advancing speed of a billet 400 in the process of piercing and rolling is greater than the rotation speed of the disk roll 1.
  • the advancing speed of the billet 400 in the process of piercing and rolling is calculated based on the rotation speed of the inclined rolls 300. Therefore, the determination can be made before piercing and rolling is actually carried out.
  • the outer circumferential side 371 of the end surface 37 of each of the arcuate members 30 is more inclined to the rotation direction of the disk roll than the inner circumferential surface side 372. Note that the inclined rolls are not shown in Fig. 5 .
  • the billet surface and the outer circumferential surface 39 of the disk roll 1 slide against each other in the lengthwise direction of the billet 400.
  • the sliding causes a part of the billet 400 to come into the contact part 38 between arcuate members 30 adjacent to each other. If the billet 400 thus comes in, a gap forms at the contact part 38 and cracks may form at the ends of the arcuate members 30 in some cases. Furthermore, it can be expected that if the gap extends, a corner of the end of the arcuate member 30 will flaw the billet.
  • a gap forming at the contact part 38 if any extends from the outer circumferential surface 39 toward the inner circumferential surface 31 in the opposite direction to the direction of the relative speed Vr of the billet to the rotation speed of the disk roll 1. Therefore, during the piercing and rolling, it is unlikely that a part of the billet 400 comes into the gap. In this way, cracks at the end of the arcuate members 30 and flaws on the billet can be suppressed.
  • the inner circumferential surface side 372 of the end surface 37 of each of the arcuate members 30 is more inclined to the rotation direction of the disk roll 1 than the outer circumferential surface side 371 as shown in Fig. 6 .
  • the fitting ridge 35 is provided along the edge of the fitting surface 34 of the inner surface ridge 33 but the fitting ridge 35 may be formed in the circumferential direction on a surface of fitting surface 34 other than at the edge side as shown in Fig. 7 .
  • the fitting ridge 35 may be formed on the fitting surface 13 and a groove 14 corresponding to the fitting ridge 35 may be formed at the fitting surface 34.
  • a through hole 36 may be provided at the outer surface ridge 12 of the shaft member 10 and a screw hole 15 may be provided in a corresponding position of the arcuate member 30.
  • the inner surface ridge 33 may be fitted to the outer surface ridge 12 without forming the fitting ridge 35 and the groove 14.
  • two disk rolls 1 are provided one above the other around the pass center O, while they may be provided side by side.
  • the inclined rolls 300 are provided one above the other.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Metal Rolling (AREA)

Claims (6)

  1. Rouleau à disque (1) à utiliser dans un dispositif perceur (100) pour la fabrication de tubes sans soudure, comportant :
    un élément d'arbre configuré en forme de disque (10) comprenant, en son centre, un arbre d'entraînement (16) dudit rouleau à disque (1) ; et
    un élément d'anneau circulaire (20) monté sur une circonférence extérieure dudit élément d'arbre (10) et présentant une surface circonférentielle extérieure (11) évidée en coupe transversale,
    ledit élément d'anneau circulaire (20) incluant une pluralité d'éléments en forme d'arc (30) agencés dans la direction circonférentielle,
    caractérisé en ce que
    le diamètre extérieur d'une surface latérale (1SI) dudit élément d'anneau circulaire (20) est plus grand que le diamètre extérieur de l'autre surface latérale (1SO),
    lesdits éléments en forme d'arc (30) comportent, chacun, une nervure de surface intérieure (33) formée le long d'une bordure d'une surface circonférentielle intérieure (31) sur le côté de surface latérale (1SI) présentant le plus grand diamètre extérieur,
    ledit élément d'arbre (16) comprend une nervure de surface extérieure (12) formée le long d'un bord latéral de la surface circonférentielle extérieure et ajustée à ladite nervure de surface intérieure (33).
  2. Rouleau à disque (1) selon la revendication 1, dans lequel l'une desdites nervures de surface intérieure et extérieure (12 ; 33) présente un trou à vis (15) au niveau d'une surface opposée à l'autre, ladite autre nervure desdites nervures de surface intérieure et extérieure (33 ; 12) présente un trou de passage (36) dans une position opposée au dit trou à vis (15) et dans lequel une vis est insérée dans ledit trou de passage et dans ledit trou à vis afin de fixer, de façon sûre, ledit élément en forme d'arc (30) sur ledit élément d'arbre (10).
  3. Rouleau à disque (1) selon la revendication 2, dans lequel l'une desdites nervures de surface intérieure et extérieure (33 ; 12) comporte une nervure d'ajustement (35) formée dans la direction circonférentielle au niveau d'une surface opposée à l'autre, et
    ladite autre nervure desdites nervures de surface intérieure et extérieure (12 ; 33) présente une gorge (14) ajustée à ladite nervure d'ajustement (35) dans une position opposée à ladite nervure d'ajustement (35).
  4. Rouleau à disque (1) selon la revendication 2, dans lequel ladite nervure de surface extérieure (12) comporte le trou à vis (15) au niveau d'une surface opposée à ladite nervure de surface intérieure (33) et ladite nervure de surface intérieure (33) comporte le trou de passage (36) dans une position opposée au dit trou à vis (15), et
    le diamètre dudit trou de passage (36) est plus grand que le diamètre (D0) d'une tête de vis (41) allant d'un côté d'introduction jusqu'à une position prescrite plus profonde que la hauteur (L0) de ladite tête de vis (41) et plus petit que le diamètre (D0) de ladite tête de vis (41) allant de ladite position prescrite jusqu'à un côté de sortie.
  5. Rouleau à disque selon l'une quelconque des revendications 1 à 4, dans lequel les deux surfaces d'extrémité (37) de chacun desdits éléments en forme d'arc (30) sont inclinées vers la surface circonférentielle intérieure (31) et les éléments en forme d'arc adjacents (30) sont ajustés l'un à l'autre par leurs surfaces d'extrémité opposées (37).
  6. Procédé de fabrication d'un tuyau ou d'un tube sans soudure utilisant un dispositif perceur (100) doté de rouleaux inclinés (300), comportant les étapes comprenant le fait de :
    préparer un rouleau à disque comportant un élément d'arbre configuré en forme de disque (10) présentant, en son centre, un arbre d'entraînement (16), et un élément d'anneau circulaire (20) monté sur la circonférence extérieure dudit élément d'arbre (10) et présentant une surface circonférentielle extérieure (11) évidée en coupe transversale, ledit élément d'anneau circulaire (20) comportant une pluralité d'éléments en forme d'arc (30) agencés suivant la direction circonférentielle, les deux surfaces d'extrémité (37) des éléments en forme d'arc adjacents (30) étant ajustées l'une sur l'autre par leurs surfaces d'extrémité opposées (37) ;
    caractérisé par le fait de
    déterminer si la vitesse de progression d'une billette (400) déterminée par le nombre de révolutions dudit rouleau incliné (300) est plus grande que la vitesse de rotation dudit rouleau à disque (1) ;
    fournir, dans ledit dispositif perceur (100), un rouleau à disque (1) dans lequel les deux surfaces d'extrémité (37) de chaque dit élément en forme d'arc (30) sont inclinées vers sa surface circonférentielle intérieure (31) à partir du côté de la surface circonférentielle extérieure (371) opposé à la direction de rotation du rouleau à disque (1) vers le côté circonférentiel intérieur (372) si la vitesse de progression de ladite billette (400) est supérieure à la vitesse de rotation dudit rouleau à disque (1), et
    un rouleau à disque (1) dans lequel les deux surfaces d'extrémité (37) de chaque dit élément en forme d'arc (30) sont inclinées à partir du côté de la surface circonférentielle intérieure (372) opposé à la direction de rotation du rouleau à disque (1) vers le côté circonférentiel extérieur (371) si la vitesse de progression de ladite billette (400) est inférieure à la vitesse de rotation dudit rouleau à disque (1), sur la base dudit résultat de détermination ; et

    percer et laminer ladite billette (400) en un tube ou en un tuyau sans soudure en utilisant le dispositif perceur (100) comportant ledit rouleau à disque (1).
EP07714293.3A 2006-02-16 2007-02-15 Rouleau a disque et procede de fabrication d'un tuyau sans soudure utilisant celui-ci Ceased EP1985385B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006038835 2006-02-16
PCT/JP2007/052763 WO2007094424A1 (fr) 2006-02-16 2007-02-15 Rouleau a disque et procede de fabrication d'un tuyau sans soudure utilisant celui-ci

Publications (3)

Publication Number Publication Date
EP1985385A1 EP1985385A1 (fr) 2008-10-29
EP1985385A4 EP1985385A4 (fr) 2012-05-16
EP1985385B1 true EP1985385B1 (fr) 2013-07-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07714293.3A Ceased EP1985385B1 (fr) 2006-02-16 2007-02-15 Rouleau a disque et procede de fabrication d'un tuyau sans soudure utilisant celui-ci

Country Status (4)

Country Link
EP (1) EP1985385B1 (fr)
JP (1) JP4780192B2 (fr)
CN (1) CN201275544Y (fr)
WO (1) WO2007094424A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102500621A (zh) * 2011-11-26 2012-06-20 秦建平 可在线调整和更换的三辊y型轧机轧辊装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62189803A (ja) * 1986-02-14 1987-08-19 Matsushita Electric Works Ltd アンテナド−ム
JPH0357281Y2 (fr) * 1986-05-22 1991-12-26 Kawasaki Steel Co
JP3082419B2 (ja) 1992-04-03 2000-08-28 住友金属工業株式会社 傾斜圧延機
JP2996124B2 (ja) 1995-02-21 1999-12-27 住友金属工業株式会社 継目無金属管の穿孔圧延方法
JP4364064B2 (ja) * 2004-06-08 2009-11-11 住友金属工業株式会社 ディスクロール及びその製造方法

Also Published As

Publication number Publication date
WO2007094424A1 (fr) 2007-08-23
JPWO2007094424A1 (ja) 2009-07-09
JP4780192B2 (ja) 2011-09-28
EP1985385A4 (fr) 2012-05-16
EP1985385A1 (fr) 2008-10-29
CN201275544Y (zh) 2009-07-22

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