EP0550256A1 - Schrägwalzverfahren und Schrägwalzwerk - Google Patents

Schrägwalzverfahren und Schrägwalzwerk Download PDF

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Publication number
EP0550256A1
EP0550256A1 EP92311765A EP92311765A EP0550256A1 EP 0550256 A1 EP0550256 A1 EP 0550256A1 EP 92311765 A EP92311765 A EP 92311765A EP 92311765 A EP92311765 A EP 92311765A EP 0550256 A1 EP0550256 A1 EP 0550256A1
Authority
EP
European Patent Office
Prior art keywords
rolls
piercing
disk
roll
rolling
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
Application number
EP92311765A
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English (en)
French (fr)
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EP0550256B1 (de
Inventor
Masayoshi Akiyama
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
Sumitomo Metal Industries Ltd
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
Priority claimed from JP3359775A external-priority patent/JP2754999B2/ja
Priority claimed from JP04112153A external-priority patent/JP3082419B2/ja
Application filed by Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Publication of EP0550256A1 publication Critical patent/EP0550256A1/de
Application granted granted Critical
Publication of EP0550256B1 publication Critical patent/EP0550256B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B21B19/06—Rolling hollow basic material, e.g. Assel mills

Definitions

  • the present invention is regarding an inclined-rolling method for manufacturing pierced shells and similar products and an apparatus for use therewith.
  • Fig. 1 is a plan view showing an arrangement of a pair of piercing rolls in an inclined-rolling/piercing appa!atus
  • Fig. 2 is a cross section taken along the line II-II in Fig. 1.
  • Fig. 3 is a plan view showing an outlet face angle ⁇ of each piercing roll without a feed angle being given.
  • the pair of cone-shaped piercing rolls 1R, 1L are axisymmetrically disposed in such a manner that their axes respectively make a cross angle ⁇ to a pass center m.
  • the piercing rolls 1R, 1L are respectively inclined at a feed angle ⁇ , being in a twist positional relation.
  • a plug 7 for piercing a billet 6 is so disposed between the piercing rolls 1R, 1L that its center axis corresponds to the pass center m, and its tip portion is located in the vicinity of the gorge portions of the piercing rolls 1R, 1L.
  • the position of the plug 7 is firmly by means of a mandrel 8 which is placed onto a mandrel support device (not shown in the drawings).
  • the piercing rolls 1R, 1L are coupled to driving power sources 3R, 3L by means of driving shafts 2R, 2L respectively, so that the piercing rolls 1R, 1L rotate around their axes in the direction as shown in Fig. 1.
  • the revolutions of the piercing rolls 1R, 1L in the direction indicated by the arrow in Fig. 1 allow the billet 6 to be entangled in the piercing rolls 1R, 1L so that the billet 6 is pierced while rotating around the pass center m clockwise when viewing from the outlet side.
  • the billet 6 is accordingly pierced by the plug 7, while being pressed from both sides by the central portions of the piercing rolls 1R, 1L, whereby a pierced shell 9 is formed.
  • the billet 6 being thus pierced vibrates in the vertical plane because the piercing rolls 1R, 1L give work to the billet 6 from both sides.
  • a pair of disk rolls are provided between the piercing rolls 1R, 1L so as to have the billet 6 therebetween (i.e., the disk rolls are aligned in the direction orthogonal to the plane of Fig. 1).
  • Fig. 4 is a plan view showing the structure of the above-mentioned inclined-rolling/piercing apparatus
  • Fig. 5 is an elevation of the apparatus shown in Fig. 4, when viewing from the outlet side.
  • a pair of disk rolls 10U, 10D for preventing the vibration of the billet 6 from occurring, the disk rolls 10U, 10D being vertically symmetrically arranged with the billet 6 between, in the vicinity of the piercing rolls 1R, 1L.
  • the disk rolls 10U, 10D are in the form of a disk of which outer circumferential face is concaved, and are rotated about by the disk roll shafts 12U, 12D respectively in the rolling direction. This prevents the vibration of the billet 6 from occurring, and therefore the rolling operation is smoothly performed.
  • the above described apparatus has a problem in that: since each of the piercing rolls 1R, 1L has the outlet face angle ⁇ and makes the cross angle ⁇ to the pass center m, as pointed out above, during the time the piercing rolls 1R, 1L rotate and the billet 6 proceeds rotating around the pass center m, the metal of the pierced shell which is in contact with the surfaces of the disk rolls 10U, 10D is fed toward the gaps G1, G2 formed between the disk rolls 10U, 10D and the piercing rolls 1R, 1L, toward the same direction as the rotating direction of the billet 6, with the result that the metal is entrapped into the gaps G1, G2, thereby causing the peeling phenomena.
  • Fig. 6 is a plan view showing the structure of the inclined-rolling/piercing apparatus disclosed in the above application.
  • the parts indicated by the same reference numerals as used for those in Figs. 4 and 5 are substantially identical to the latter.
  • the piercing roll 1R is inclined with its inlet side at an upper position and its outlet side at a lower position, while the piercing roll 1L is inclined with its inlet side and outlet side positioned in the opposite way.
  • the disk roll 10U is positioned over the billet 6 whereas the disk roll 10D is under the billet 6 so that they are symmetrical each other.
  • the disk rolls 10U, 10D are so arranged that the angles formed by their respective side faces with respect to the pass line are equal to their respective outlet face angles.
  • the disk roll 10U has a skew angle of disk roll ⁇ against the pass center m and, likewise, the disk roll 10D has a skew angle of disk roll ⁇ in the opposite direction.
  • the billet 6 is rolled, rotating clockwise when viewing from the outlet side.
  • the disk rolls 10U, 10D prevent the metal from being caught into the gaps G1, G2, and therefore the entrapping of the metal can be avoided.
  • the gaps G1, G2 into which the billet 6 will be forced and entrapped are the clearances defined between the disk rolls 10U, 10D and the piercing rolls 1R, 1L. This will be explained, taking the gap G1 defined between the piercing roll 1R and the disk roll 10U for example. Since the piercing roll 1R is inclined with the inlet side at an upper position and the outlet side at a lower position, the peripheral edge of the piercing roll 1R that forms an outlet face angle is located lower than the disk roll 10U.
  • One of the objects of the invention is to provide an inclined-rolling method and inclined-rolling apparatus that are capable of making the gaps between the piercing rolls and the disk rolls close to zero, thereby preventing the tube material from being entrapped into the gaps.
  • Another object of the invention is to provide an inclined-rolling method and inclined-rolling apparatus wherein the possible set range of the effective roll length, (i.e., the possible set range of the distance from the opposite gorge portion at which piercing/drawing is performed) can be made as wide as possible so that the amount of processing per unit length of the effective roll Length can be reduced, thereby enabling a stable piercing operation for thin-wall materials.
  • the possible set range of the effective roll length i.e., the possible set range of the distance from the opposite gorge portion at which piercing/drawing is performed
  • a further object of the invention is to provide an inclined-rolling method and inclined-rolling apparatus that are capable of preventing the interference from occurring between the piercing rolls and the disk rolls, thereby making the gaps therebetween close to zero as much as possible.
  • a tube material is rolled in such condition that the respective images of the shaft center lines of a pair of disk rolls projected on the plane which includes the roll shafts of a pair of piercing rolls to which no feed angle is given are not orthogonal to the pass line, and the respective shaft center lines intersect the plane.
  • each disk roll is provided with a circular groove at the peripheral edge of one side face thereof so that the side face can avoid contacting to the piercing roll.
  • This arrangement enables the disk rolls to be inclined at a greater angle, thereby making the gaps between the piercing rolls and the disk rolls close to zero as much as possible.
  • Fig. 7 is an elevation of an inclined-rolling/piercing apparatus according to the invention, when viewing from its outlet side.
  • Fig. 8 is an elevation of the same apparatus to which an inclination angle of disk roll alone is given, and Fig. 9 is also an elevation of the same apparatus to which a skew angle of disk roll alone is given.
  • the parts that are substantially equivalent to those in the examples of prior art are indicated by the same reference numerals as used for the latter.
  • the pair of piercing rolls 1R, 1L which are respectively placed at the feed angle ⁇ .
  • the piercing rolls 1R, 1L are axisymmetrically arranged with their axes each forming the cross angle ⁇ to the pass center m (see Figs. 1 and 2). Their outlet face angles are represented by ⁇ (see Fig. 3).
  • the disk rolls 10U, 10D each of which has different edge diameters on the right and left, are respectively disposed over and under the billet 6 to be pierced.
  • the disk roll 10U is located over the billet 6 with its edge of a smaller diameter on the side of the piercing roll 1R while the disk roll 10D is under the billet 6 with its edge of a smaller diameter on the side of the piercing roll 1L, so that at the upper stream of the rotation of the billet 6 is provided to the smaller-diameter edge and at the lower stream of the rotation of the billet 6 is provided to the larger-diameter edge.
  • the arrangement may be made, unlike the above embodiment, such that the smaller-diameter edge of the disk roll 10U is on the side of the piercing roll 1L and the smaller-diameter edge of the disk roll 10D is on the side of the piercing roll 1R.
  • the disk rolls 10U, 10D may be respectively formed such that both edges have the same diameter.
  • the disk roll 10U is inclined at an angle of ⁇ (inclination angle of disk roll) towards the piercing roll 1R.
  • the disk roll 10D is inclined at ⁇ towards the piercing roll IL.
  • the disk roll shafts are arranged horizontally with respect to the center of the disk rolls and a skew angle of disk roll ⁇ is given to make the disk rolls inclined at their outlet side in a direction opposite to the rotating direction of the billet 6.
  • High efficiency of inclined-rolling/piercing apparatus as shown in Fig. 7 can be achieved by adding the inclination angle of disk roll ⁇ and the skew angle of disk roll ⁇ .
  • the billet 6 to be pierced is rolled while rotating around O in a clockwise direction when viewing from the outlet side.
  • the billet 6 is pierced by a plug, while being pressed from both sides by the gorge portions of the piercing rolls 1R, 1L. In this way, a pierced shell is formed.
  • This rolling operation is the same as that of the prior art.
  • the billet 6 was pierced in each case so as to have an outer diameter of 90mm and a wall thickness of 2mm.
  • the maximum inclination angle ⁇ m is specified by the value ⁇ of a limit beyond which the disk roll is brought into physical contact with the side face of the piercing roll. Accordingly, piercing was carried out and the distance from the opposite gorge portion to the position at which the gap G1(G2) exceeds 2mm was measured in each case. The results are shown in Table 1.
  • the entrapping of metal takes place when the gaps G1, G2 are 2mm or more. Therefore, the above distance is equal to the distance from the opposite gorge portion after the plug 7 has started to pierce the billet 6 until the formation of a pierced shell is completed, i.e., the possible set range of the effective roll length. As the effective roll length is shorter, the amount of processing per unit effective roll length becomes larger and the load on the billet 6 increases so that stable rolling/piercing operation cannot be easily performed.
  • the greater the cross angle ⁇ the wider the possible set range of the effective roll length.
  • the cross angle ⁇ By increasing the cross angle ⁇ with the outlet face angle ⁇ fixed, the gorge diameter and the outlet diameter of the piercing roll can be increased so that the outlet face of the piercing roll becomes closer to a flat surface. Since the gap becomes more unlikely to expand towards the outlet as the outlet face is closer to a flat surface, the possible set range of the effective roll length can be made wider. Practical considerations of the diameter of the piercing roll require that ⁇ should be approximately in the range of 5° to 30°.
  • a great effect which cannot be expected by a simple algebraic addition is obtainable particularly when the skew angle of disk roll ⁇ is not less than the outlet face angle ⁇ .
  • multiple effects for preventing the entrapping of the billet from occurring can be expected by giving both the skew angle of disk roll ⁇ and the inclination angle of disk roll ⁇ .
  • Fig. 10 is a plan view of a mechanism capable of giving the skew angle ⁇ of a desired value with the screw method.
  • the vertical direction in the drawing is the direction of the pass line.
  • the upper part is the inlet side of rolling and the lower part is the outlet side of rolling.
  • 13R and 13L denote casings for the disk roll 10U, within which chocks 14R, 14L each having a face in the form of a spherical seat are supported on spherical seat supporting tables 18R, 18L. Passing through the chocks 14R, 14L is the disk roll shaft 12U.
  • screws 16R, 16L, 17R, 17L for setting a skew angle, and their traveling direction is the same as the direction of the pass line.
  • the respective tips of the screws 16R, 16L, 17R, 17L are in contact with the chocks 14R, 14L.
  • screws 15R, 15L for adjusting the right-to-left position of the disk roll 10U, in such a manner that the tips of them are in contact with the spherical seat supporting tables 18R, 18L.
  • the positions of the screws 16R, 16L, 17R, 17L can be adjusted manually or non-manually, thereby giving the skew angle ⁇ of a desired value the vertex of which is the center A of the disk roll 10U.
  • Fig. 11 is a plan view showing a mechanism for giving the skew angle ⁇ of a desired value with the liner exchange method.
  • the parts indicated by the same reference numerals as used for those in Fig. 10 have the same functions as those of the latter.
  • the plurality of pairs of liners having different face configurations (angular configurations) are thus prepared and either pair is selectively used, whereby the skew angle ⁇ the value of which is arbitrarily determined to some extent can be given to the disk roll 10U.
  • Fig. 12 is a plan view of a mechanism for giving the fixed skew angle ⁇ with the fixed method.
  • the parts indicated by the same reference numerals as used for those in Fig. 10 have the same functions as the latter.
  • Chocks 21R, 21L of a specified shape are securely fitted within the casings 13R, 13L.
  • the fixed skew angle ⁇ is given to the disk roll 10U.
  • the degree of freedom for setting the skew angle ⁇ is the highest in the screw method shown in Fig. 10, and the lowest in the fixed method shown in Fig. 12.
  • the medium degree of freedom is obtainable in the liner exchange method shown in Fig. 11.
  • One of the mechanisms for giving the skew angle ⁇ to the disk rolls may be arbitrarily selected or alternatively, a plurality of mechanisms selected from those may be used in combination.
  • Fig. 13 is an elevation of a mechanism for giving the inclination angle ⁇ of a desired value with the screw method, when viewing from the outlet side of rolling.
  • the direction of the pass line corresponds to a direction orthogonal to the plane of the drawing.
  • the front side of the plane is the outlet side of rolling and the rear side of it is the inlet side of rolling.
  • 22R and 22L denote housings within which screws 23R, 23L for adjusting the opening of the disk roll 10U are so disposed as to be in contact with the casings 13R, 13L.
  • screws 24R, 24L, 25R, 25L for setting the inclination angle.
  • Those screws 24R, 24L, 25R, 25L are disposed in such a manner that their traveling direction is vertical and their tips are in contact with the chocks 14R, 14L.
  • the positions of the screws 24R, 24L, 25R, 25L are manually or non-manually adjusted, thereby giving the inclination angle ⁇ of a desired value to the disk roll 10U.
  • Fig. 14 is an elevation of a mechanism for giving the inclination angle ⁇ of a desired value with the liner exchange method, when viewing from the outlet side of rolling.
  • the parts indicated by the same reference numerals as used for those in Fig. 13 are substantially identical to the latter.
  • Liners 26R, 26L, 27R, 27L for setting an inclination angle are fitted between the chocks 14R, 14L and the inner walls of the casings 13R, 13L.
  • one pair of liners is used being selected from the above plurality of pairs, whereby the inclination angle ⁇ of a desired value can be given to the disk roll 10U.
  • Fig. 15 is an elevation of a mechanism for giving the fixed inclination angle ⁇ with the fixed method, when viewing from the outlet side of rolling.
  • the parts indicated by the same reference numerals as used for those in Fig. 13 are substantially identical to the latter.
  • Chocks 28R, 28L of a specified shape are firmly fitted in the casings 13R, 13L.
  • the fixed inclination angle ⁇ is given to the disk roll 10U.
  • the degree of freedom for setting the inclination angle ⁇ in the screw method is the highest, with the liner exchange method (Fig. 14) and the fixed method (Fig. 15) following in that order.
  • a desired mechanism may be selected from those in accordance with situations, or alternatively a plurality of mechanisms may be used in combination.
  • the skew angle ⁇ and the inclination angle ⁇ are given to the disk rolls by the use of the above-described mechanisms, whereby the positional arrangement of the piercing rolls and the disk rolls as shown in Fig. 7 becomes feasible.
  • the positional relation with the piercing rolls is only a significant matter, so that the arrangement shown in Fig. 7 can be also achieved by giving a feed angle ⁇ ' to the piercing rolls whereas the disk rolls are not inclined and giving the skew angle ⁇ to the disk rolls.
  • Fig. 16 is an elevation of a mechanism for giving the feed angle ⁇ ' of a desired value to the piercing rolls with the screw method, when viewing from the outlet side of rolling.
  • the direction orthogonal to the plane of the drawing is the direction of the pass line, and the front side of the plane is the outlet side of rolling and the rear side of the plane is the inlet side of rolling.
  • 31R and 31L denote cradles for the piercing rolls 1R, 1L.
  • yokes 33R, 33L are supported by spherical seat supporting tables 32R, 32L, either face of the respective yokes 33R, 33L being a spherical seat.
  • the cradles 31R, 31L are provided with screws 29R, 29L, 30R, 30L for setting a feed angle which are so disposed that their traveling direction is a vertical direction and their tips are in contact with the yokes 33R, 33L. Also, the cradles 31R, 31L are provided with screws 34R, 34L for adjusting the openings of the piercing rolls 1R, 1L, the tips of the screws 34R, 34L being in contact with the spherical seat supporting tables 32R, 32L. The positions of the screws 29R, 29L, 30R, 30L are manually or non-manually adjusted, thereby giving the feed angle ⁇ ' of a desired value to the piercing rolls 1R, 1L.
  • the above-described arrangement of the disk rolls and the piercing rolls allows the gaps between the piercing rolls and the disk rolls to be narrower, thereby preventing the bulged-out metal of the pierced shell from being entrapped into the gaps.
  • the gaps will be narrower.
  • the piercing rolls are in the form of a cone, those angles cannot be set more than their respective angle limits (i.e., a maximum skew angle of disk roll ⁇ m and a maximum inclination angle of disk roll ⁇ m ) beyond which the side faces of the disk rolls come in contact with the side rolling surface of the piercing rolls.
  • the size of the circular groove to be formed is dependent on the magnitude of indentation of the side face of the disk roll into the piercing roll.
  • This magnitude of indentation varies according to the inclination of the disk roll, namely, the skew angle of disk roll ⁇ and the inclination angle of disk roll ⁇ .
  • various gap distances and various magnitudes of the contact of the side face of the disk roll with the piercing roll, those variations being caused by changes in the inclination of the disk roll will be explained in detail.
  • the parameters for the piercing roll and the disk roll were set as follows.
  • the piercing roll having an outlet face angle ⁇ of 4° and a gorge diameter of 410mm was disposed with a gorge spacing of 62mm, a cross angle ⁇ of 30° and a feed angle ⁇ of 12° , while the disk roll having an edge diameter of 1,200mm was spaced with a disk edge spacing of 70mm.
  • the skew angle of disk roll ⁇ was varied to 0° , 2° , 4° and 6° and the inclination angle of disk roll ⁇ was varied to 0° , 10° and 20° .
  • the length of the gap and the magnitude of indentation of the side face of the disk roll with the piercing roll are calculated with the inclination angle of disk roll ⁇ being varied to 0° , 10° and 20° .
  • Fig. 21 is a diagram illustrating the arrangement of the piercing roll and the disk roll, using an orthogonal coordinate system.
  • the piercing point by the gorge portion of the piercing roll is represented by the origin, although the origin in Fig. 21 is illustrated differently from this definition for the convenience of illustration, the direction towards the center of the gorge portion of the piercing roll by the X-axis, the perpendicular direction by the Y-axis, and the direction of the pass center by the Z-axis.
  • Another piercing roll symmetrically disposed to the above piercing roll is located in the plane in the negative direction of the Y-axis. The piercing direction corresponds to the positive direction of the Z-axis.
  • the graphs of Figs. 17 through 20 show the value of the gap between the piercing roll and the disk roll in the rolling direction.
  • the length of the gap has a negative value. This indicates that the edge of the disk roll is in contact with the piercing roll.
  • the abscissa represents the rolling direction while the ordinate represents the perpendicular direction.
  • Symbol ⁇ denotes a position at where the amount of indentation has a maximum depth
  • the numeric value in the symbol ⁇ is the maximum depth of indentation.
  • the position of the disk edge is plotted in the same coordinates.
  • Fig. 22 is a cross section of the disk roll 10U(10D) according to another embodiment.
  • the hatched part represents a circular groove 40.
  • the side face of the disk roll 10U(10D) is circular and has edge diameters of 1,200mm and 1,240mm.
  • the thickness, i.e., the distance between the two side faces is 55mm.
  • the periphery of the side face of smaller diameter (i.e., 1,200mm) is provided with the circular groove 40 having a width of 100mm (the groove extends by 100mm from the edge towards the center of the side face).
  • the groove 40 has a maximum depth of 6mm and its bottom takes the form of a circle.
  • the location and amount of indentation is a distance of about 75mm from the pass center in the perpendicular direction. In the case of the actual disk roll surface, this corresponds to a distance of about 80mm from the pass center in the perpendicular direction.
  • the maximum depth of indentation is 5mm. It is understood from the above facts that the circular groove 40 of the above-described embodiment is formed at a position where the contact with the piercing roll takes place and has a size large enough to acommodate the indentation amount.
  • the gap exceeded 2mm at a position 75mm apart from the gorge portion of the piercing roll in the rolling direction and the peeling phenomena occurred at the position of 80mm. It is appreciated from the above tests that the provision of the circular groove 40 is able to further narrow the gaps so that rolling/piercing can be performed without occurring the entrapping of the pierced shell into those gaps.
  • This embodiment is also effective when wide tube piercing operation is effected, in which the ratio of outer diameter after the piercing operation to outer diameter before the operation is 1.3, 1.5, 2.0 etc.
  • a rolling/piercing apparatus for billets has been described hereinabove, but it is also possible to apply the invention to a drawing/rolling apparatus for elongating hollow shells.
  • cone type piercing rolls for example, but other types such as the barrel type may be used as far as the piercing rolls have an inlet face angle and an outlet face angle with respect to the pass line.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Metal Rolling (AREA)
EP92311765A 1991-12-28 1992-12-23 Schrägwalzverfahren und Schrägwalzwerk Expired - Lifetime EP0550256B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP3359775A JP2754999B2 (ja) 1991-12-28 1991-12-28 傾斜圧延方法及びその装置
JP359775/91 1991-12-28
JP112153/92 1992-04-03
JP04112153A JP3082419B2 (ja) 1992-04-03 1992-04-03 傾斜圧延機

Publications (2)

Publication Number Publication Date
EP0550256A1 true EP0550256A1 (de) 1993-07-07
EP0550256B1 EP0550256B1 (de) 1996-02-21

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EP92311765A Expired - Lifetime EP0550256B1 (de) 1991-12-28 1992-12-23 Schrägwalzverfahren und Schrägwalzwerk

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EP (1) EP0550256B1 (de)
AT (1) ATE134321T1 (de)
DE (1) DE69208443T2 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19516595A1 (de) * 1993-11-02 1996-11-14 Sumitomo Metal Ind Lochwalzverfahren und Lochwalzvorrichtung für nahtlose Stahlrohre
WO2004112978A1 (en) * 2003-06-23 2004-12-29 Anthony Kastropil Apparatus for rectifying round pipe and tubing
WO2008142803A1 (ja) 2007-05-21 2008-11-27 Sumitomo Metal Industries, Ltd. 継目無管の穿孔圧延方法及び装置
ES2392913A1 (es) * 2012-09-05 2012-12-14 La Farga Tub, S.L. Conjunto conformador de hileras para el conformado de las hileras utilizadas en la extrusión de metales
CN112275801A (zh) * 2020-11-04 2021-01-29 中兴能源装备有限公司 一种管件斜轧式环辊旋压机
CN115608784A (zh) * 2022-12-16 2023-01-17 太原理工大学 大长径比异质金属复合薄壁管渐进斜轧复合设备及其方法
CN116550758A (zh) * 2023-07-06 2023-08-08 太原理工大学 一种无缝金属波纹复合管高效定径调整斜轧设备及方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2156595B2 (de) * 1971-11-11 1979-04-19 Mannesmannroehren-Werke Ag, 4000 Duesseldorf
GB2096505A (en) * 1981-04-10 1982-10-20 Sumitomo Metal Ind Piercing in seamless tube manufacturing
EP0156922A1 (de) * 1983-09-24 1985-10-09 Kawasaki Steel Corporation Roehrenwalzwerk mit schraubenfoermigem bearbeitungsweg durch quergestellte walzen.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2156595B2 (de) * 1971-11-11 1979-04-19 Mannesmannroehren-Werke Ag, 4000 Duesseldorf
GB2096505A (en) * 1981-04-10 1982-10-20 Sumitomo Metal Ind Piercing in seamless tube manufacturing
EP0156922A1 (de) * 1983-09-24 1985-10-09 Kawasaki Steel Corporation Roehrenwalzwerk mit schraubenfoermigem bearbeitungsweg durch quergestellte walzen.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 321 (M-736)1988 & JP-A-63 090 306 ( KAWASAKI STEEL ) *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19516595A1 (de) * 1993-11-02 1996-11-14 Sumitomo Metal Ind Lochwalzverfahren und Lochwalzvorrichtung für nahtlose Stahlrohre
US5636542A (en) * 1993-11-02 1997-06-10 Sumitomo Metal Industries, Ltd. Piercing-rolling method and piercing/rolling apparatus for seamless steel tube
DE19516595C2 (de) * 1993-11-02 1999-10-07 Sumitomo Metal Ind Lochwalzverfahren und Lochwalzvorrichtung für nahtlose Stahlrohre
US7600406B2 (en) 2003-06-23 2009-10-13 Stainless Tube Mills (Australia) Ltd. Apparatus for rectifying round pipe and tubing
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WO2008142803A1 (ja) 2007-05-21 2008-11-27 Sumitomo Metal Industries, Ltd. 継目無管の穿孔圧延方法及び装置
EP2050518A1 (de) * 2007-05-21 2009-04-22 Sumitomo Metal Industries, Ltd. Verfahren und vorrichtung zum durchbohren und rollen eines nahtlosen rohrs
EP2050518A4 (de) * 2007-05-21 2013-07-10 Nippon Steel & Sumitomo Metal Corp Verfahren und vorrichtung zum durchbohren und rollen eines nahtlosen rohrs
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CN112275801A (zh) * 2020-11-04 2021-01-29 中兴能源装备有限公司 一种管件斜轧式环辊旋压机
CN115608784A (zh) * 2022-12-16 2023-01-17 太原理工大学 大长径比异质金属复合薄壁管渐进斜轧复合设备及其方法
CN116550758A (zh) * 2023-07-06 2023-08-08 太原理工大学 一种无缝金属波纹复合管高效定径调整斜轧设备及方法
CN116550758B (zh) * 2023-07-06 2023-09-12 太原理工大学 一种无缝金属波纹复合管高效定径调整斜轧设备及方法

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DE69208443T2 (de) 1996-09-26
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DE69208443D1 (de) 1996-03-28

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