EP0156151B1 - Laminoir du type planétaire universel pour produits longs - Google Patents

Laminoir du type planétaire universel pour produits longs Download PDF

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Publication number
EP0156151B1
EP0156151B1 EP85101613A EP85101613A EP0156151B1 EP 0156151 B1 EP0156151 B1 EP 0156151B1 EP 85101613 A EP85101613 A EP 85101613A EP 85101613 A EP85101613 A EP 85101613A EP 0156151 B1 EP0156151 B1 EP 0156151B1
Authority
EP
European Patent Office
Prior art keywords
rolling
rolling mill
rollers
rolls
axis
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 - Lifetime
Application number
EP85101613A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0156151A1 (fr
Inventor
Bernard Fazan
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.)
Institut de Recherches de la Siderurgie Francaise IRSID
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
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 Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Priority to AT85101613T priority Critical patent/ATE51168T1/de
Publication of EP0156151A1 publication Critical patent/EP0156151A1/fr
Application granted granted Critical
Publication of EP0156151B1 publication Critical patent/EP0156151B1/fr
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
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/18—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories for step-by-step or planetary rolling; pendulum mills
    • B21B13/20—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories for step-by-step or planetary rolling; pendulum mills for planetary rolling

Definitions

  • the present invention relates to rolling mills of the universal planetary type for the rolling of long products, such as metal billets, in particular steel, in which a rolling action is exerted by rollers equiangularly at the periphery of four rotary rolling units. distributed symmetrically around the product to be laminated, the axes of the rollers being parallel to the axis of the unit carrying them. (See DE-A-1 452143)
  • the rolling mills of the type under consideration comprise rotary two-by-two symmetrical rolling units arranged around the product to be rolled and each carrying evenly distributed working rollers on the periphery.
  • These rolling units can be of two types, namely a first type in which the working rollers roll on a support cylinder and are journalled in rings rotating concentrically with the support cylinder, we will then speak of the type with support cylinder, and a second type without support cylinder in which the rollers are directly journalled in a rotor and which will be called rotor type.
  • rollers of each unit are forced to move in synchronization with that of the other assemblies so as to ensure rolling by successive contact of the rollers with the product to be laminated.
  • the first group is integral with two rotors 2 and 2 'driven in synchronous rotation around parallel axes 3 and 3'.
  • the rotor 2 carries a set of rollers 4a, 4b ... 4n distributed equiangularly on its periphery, while the rotor 2 'likewise carries an identical set of rollers 4 ⁇ , 4b' ... 4n ', arranged in antagonism with the previous, the axes of all the rollers being parallel to the axes 3 and 3 'of the rotors.
  • the second group is integral with two other rotors 5 and 5 'identical to the previous ones, and offset angularly by 90 ° around the axis of the billet 1 - 1'.
  • rollers 6 and 6 'carried by these rotors are similar in number and arrangement to the rollers 4 and 4', but arranged so as to exert their action on the two other faces of the billet 1 - l 'in the interval which separates the respective actions of two successive pairs of rollers of the rotors 2 and 2 ', for example the pairs 4a, 4a' and 4b, 4b '.
  • the section of the billet 1 is thus progressively reduced by the action of the pairs of opposing rollers alternately on a pair of opposite faces, then on the other.
  • 1b shows the shape taken by the rolled bar in the area where it is in contact with the rollers traversing their respective orbits.
  • This zone is called “grip” and one can also designate under the same name the part of the bar which is there and which extends from the place where the deformation begins to the plane of cross section P ' from which the cross section of the billet has reached the desired dimensions and called for this reason "exit plane.
  • the rollers have a straight generator, so that the rolling is done in "free” enlargement: the effect of fins due to the screw angles A (fig. 1 c) resulting from the significant surface enlargement caused by this deformation mode, results in a very significant cooling of the angles of the billet, the formation of angle cracks and surface defects detrimental to the quality of the finished product.
  • the present invention aims to eliminate all of these difficulties while ensuring that a product with rounded angles is obtained by rolling by means of a simple and compact mechanism in which the axes of the rollers remain parallel to those of the rotors.
  • the invention relates to a rolling mill of the universal planetary type for the rolling of long products as defined in claim 1 for the rolling of products with a quadrangular cross section, or as defined in claim 7 for the rolling of products with rounded straight section.
  • the rotors carrying the rollers are rotated and synchronized by means known in themselves.
  • the rollers may or may not themselves be rotated and synchronized as will be explained below.
  • the shape of the final cross section is obtained by the successive actions of pairs of opposing rollers in two directions perpendicular to each other. During each of these actions, each roller is in contact with two adjacent faces of the billet and this contact can take place over the entire width of the face of the billet or over only part of this width.
  • FIG. 2 illustrates in principle that of the solutions proposed according to the present invention which corresponds to the first possibility envisaged above in which the contact between at least one of the flanks of the roller and the billet is made over the entire width of the face corresponding to the billet and that gold will call in variant I below.
  • the invention consists in giving each roller 10 and 11 rotatably mounted about its axis 10 '(11') the shape of a solid of revolution obtained by assembling two coaxial cone trunks 12, 13 (17 , 18) of different heights, joined by their small base so as to form a rounded groove in the plane V perpendicular to the axis of the rollers and to that of the rotor which carries them and containing a diagonal of the billet, the flank most along one of the rollers facing the longest side of the other roller which is antagonistic to it.
  • the rectilinear central part of the sidewall 14 of the truncated cone 12 of the roller 10 is long enough for there to be contact with the corresponding face of the billet over its entire width so as to give a regular and well defined shape to this face.
  • the two rectilinear central parts of the contours or curves generating the sides of the truncated cones are inclined, as indicated above, at 45 ° on the axis of the rollers.
  • one of the rollers (for example 11) is deduced from that which is paired with it (here 10) by a rotation of 180 ° around the longitudinal axis XX 'of the billet perpendicular to the plane of Figure 2.
  • the invention consists in reversing, from one roller to another, the arrangement of the two truncated cones.
  • the large truncated cone is on the right and the small one on the left
  • c is the small trunk of cone which is on the right and the large one on the left.
  • the invention provides for place on these rotors with vertical axes rollers of similar size, shape and distribution, acting in pairs of antagonistic rollers and the contours of which are deduced, for each pair of antagonistic rollers, from those of the pair of anta rollers gonists of the other pair of rotors which preceded it in the successive rolling actions, by first carrying out a symmetry with respect to the vertical axial plane of the billet, then a rotation of 90 ° around the axis of the billet.
  • FIG. 3 shows the block diagram of the entire installation according to the invention, the pair of rollers of Figure 2, with the same references for the same elements: rollers 10 and 11 rotating around axes 10 'and 11' rotatable in bearings at the periphery of rotors 30 and 31 carrying, diametrically opposite, rollers 32 and 33 respectively.
  • two other rotors 34 and 35 rotatably mounted perpendicular to the previous ones carry pairs of rollers 36 - 37 and 38 - 39 offset by 90 ° relative to rollers 10 - 32 and 11 - 33 to ensure synchronization of the rolling process.
  • the operation of the assembly is ensured from the transmission shafts 40 and 50 actuated by motors not shown.
  • the shaft 40 directly drives the rotor 30 and the adjustment of the speed of rotation of the rollers on themselves can be done as shown in FIG. 3 from the shaft 50 by means of the toothed wheels 51, 52 , 53 - 53 '.
  • the double toothed wheel 52 rotates freely on the shaft 40 and the synchronization of the three other rotors and of the rollers which they carry is ensured by the conical references 42, 43, 44 and 45.
  • the synchronization of the shaft 50 with the three other similar trees of the other three rotors have not been shown so as not to overly complicate the figure.
  • this mode of adjusting the speed of rotation of the rollers is only a nonlimiting example and it can be achieved by any other means known in itself without departing from the scope of the invention.
  • the shape of the pairs of opposing rollers 10 - 11 and 32 - 33 conforms to the characteristics set out with reference to FIG. 2.
  • the other two rotor-roller assemblies 36 to 39, with vertical axes, are entirely similar to each other, except for the angular offset of the rollers, to assemblies 10 -11 and 32 - 33.
  • Figure 4a corresponds to the overall position of the elements shown in Figure 3.
  • the billet 1 undergoes the action of the rollers 10 and 11.
  • the flanks 14 and 19 of the large truncated cones 12 and 17 of the rollers exert the main rolling action over the entire width of the faces of the billet interested in this action, while that of the shorter sides 15 and 20 is felt only over part of the width of the other two faces and that the grooves 9 and 22 of the rollers 10 and 11 remain in contact with the corresponding angles of the billet giving them the desired rounded shape.
  • the action of the longest flanks 14 'and 20' has, among other things, the effect of regularizing the shape of the faces of the billet which, during the actions of the two previous passes of opposing rollers represented in FIGS. 4a and 4b n ' were not rolled uniformly over their entire width, as will be seen in more detail later.
  • each rotor comprises only two diametrically opposite rollers.
  • each rotor comprises an integer number of pairs of successive rollers, the rollers being individually distributed equiangularly on the periphery of each rotor, and the two rollers of a pair reproducing the shape and arrangement with respect to the billet at the time when the deformation takes place as described in the simplest installation with two rollers per rotor, while the shape and arrangement of the rollers are repeated from one pair of pebbles to the next.
  • the invention is in no way limited to the rolling of square billets, but extends to long products of circular, rectangular or polygonal cross section, in so far as the characteristics set out in the appended claims are respected.
  • Figures 5a, 5b, 5c, 5d illustrate precisely the rolling of a bar of circular section 1 'from a bar whose initial section shown in broken lines 1 has been shown in circular form for the simplicity of the drawing, but which could have another shape.
  • Figure 6 details the shape of the rollers which has an asymmetry with respect to the plane V passing through the axis of the rolled bar and perpendicular to the axis of the rollers.
  • This plan divides each roller into two parts of unequal heights, for example H1 and H2 for the roller 60.
  • the contact sector AB which coincides, in this case, with the rounded groove of circular shape, must extend over a angle a greater than 90 degrees to ensure the necessary overlap between the successive contact contours of the different pairs of opposing rollers, and preferably have an offset with respect to the trace V of the vertical axial plane so as to promote the continuity of the deformation in the vicinity from its ends A and B, thanks to the flares 61 and 62 through which the flanks of the roller continue beyond A and B.
  • FIG. 7 illustrates in principle the other variant proposed according to the present invention which will be called variant II which corresponds to the second possibility envisaged in the general presentation of this invention and in which the contact between the two sides of the roller and the two corresponding faces of the square billet is made only over part of the width of these faces.
  • the invention consists in giving each roller 71 and 72 rotatably mounted around its axis 71 '(72') the shape of a solid of revolution obtained by assembling two truncated cones 73 and 74 equal coaxials , connected by their small base so as to form a rounded groove situated in a diagonal "V" plane of the billet 1, 1 'and perpendicular to the axes 71', 72 'of the rollers.
  • These truncated cones are extended beyond their large base by rounded flares 75 and 76 connecting to cylindrical parts 77 and 78, each roller thus having a shape symmetrical with respect to the plane "V".
  • the rectilinear part 79 of the generating curve, or contour, of each cone, inclined at 45 ° on the axis of the roller, must extend beyond the middle of the face of the billet so that there overlap between the part of the face of the billet in contact with the roller 71 (for example) during the time when the pair of rollers 71 - 72 traverses the working arc and that in contact with the roller 81 (FIG. 8) of the pair of opposing rollers integral with the other group of rollers mounted on the other two rotors, which immediately after will come to traverse the working arc.
  • the two variants according to which the invention can be implemented are therefore distinguished by the shape of the rollers, their distribution and their arrangement on the periphery of the rotors which carry them and finally by the nature and symmetry of the contacts between the rollers and the billet in the grip.
  • two of the opposite faces of the billet for example the faces a, b, f, e and d, cg, h to use the notations of FIG. 1a, have been in contact throughout their width with the rollers which have just traversed the right-of-way, at least on the part of the right-of-way which is on the side of the exit plane P ', while the other two faces a, d, h, e and b, c , g, f have been in contact with these same rollers only over part of their width, so that a cross section of the laminated bar, made in the right-of-way, has, in accordance with FIG.
  • the size of the bead depends on the distance, or advance, of which the billet has moved in the rolling direction between two successive contacts between the rolled product and the pairs of successive opposing rollers which carry out the shaping work.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Crushing And Grinding (AREA)
  • Tires In General (AREA)
  • Disintegrating Or Milling (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
EP85101613A 1984-02-22 1985-02-14 Laminoir du type planétaire universel pour produits longs Expired - Lifetime EP0156151B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85101613T ATE51168T1 (de) 1984-02-22 1985-02-14 Universal-planetenwalzwerk fuer langprodukte.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8402803 1984-02-22
FR8402803A FR2559689B1 (fr) 1984-02-22 1984-02-22 Laminoir du type planetaire universel pour produits longs

Publications (2)

Publication Number Publication Date
EP0156151A1 EP0156151A1 (fr) 1985-10-02
EP0156151B1 true EP0156151B1 (fr) 1990-03-21

Family

ID=9301345

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85101613A Expired - Lifetime EP0156151B1 (fr) 1984-02-22 1985-02-14 Laminoir du type planétaire universel pour produits longs

Country Status (7)

Country Link
US (1) US4715205A (es)
EP (1) EP0156151B1 (es)
JP (1) JPS60203312A (es)
AT (1) ATE51168T1 (es)
DE (1) DE3576658D1 (es)
ES (1) ES8700091A1 (es)
FR (1) FR2559689B1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4995252A (en) * 1989-03-06 1991-02-26 Carrier Corporation Method and apparatus for internally enhancing heat exchanger tubing
IT1267270B1 (it) * 1994-07-11 1997-01-28 Simac Spa Gruppo di laminazione per alte riduzioni
LT5623B (lt) 2008-04-30 2010-01-25 Biotechnologijos Institutas, , 5-aril-4-(5-pakeistieji 2,4-dihidroksifenil)-1,2,3-tiadiazolai kaip hsp90 šaperono slopikliai ir tarpiniai junginiai jiems gauti
DE102020209135A1 (de) 2020-07-21 2022-01-27 Sms Group Gmbh Planetenwalzwerk

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1452143A1 (de) * 1965-05-19 1969-01-02 Wissenschaftlich Tech Zentrum Planetenwalzwerk zum Walzen von Stabmaterial aus Bloecken oder Knueppeln
DE1452157A1 (de) * 1965-12-17 1968-12-19 Wissenschaftlich Tech Zentrum Planetenwalzwerk zum Auswalzen schmalen Ausgangsmaterials
DE1652559A1 (de) * 1967-12-27 1971-08-05 Schloemann Ag Vorrichtung zum Verformen von Metallen
DE1813331A1 (de) * 1968-12-07 1970-06-25 Siemag Siegener Maschinenebau Universal-Planetenwalzwerk
DE1816915A1 (de) * 1968-12-24 1970-07-02 Schloemann Ag Planetenwalzwerk mit zwei angetriebenen Stuetzwalzen
CA1079098A (en) * 1977-07-01 1980-06-10 Alexander I. Wilson Rolling machine

Also Published As

Publication number Publication date
EP0156151A1 (fr) 1985-10-02
US4715205A (en) 1987-12-29
ES8700091A1 (es) 1986-10-01
DE3576658D1 (de) 1990-04-26
FR2559689A1 (fr) 1985-08-23
JPS60203312A (ja) 1985-10-14
FR2559689B1 (fr) 1987-05-15
ATE51168T1 (de) 1990-04-15
ES540579A0 (es) 1986-10-01

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