EP0340505A2 - Mode opératoire et train de laminoirs pour laminer continuellement une matière à laminer profilée en une section transversale de dimensions exactes et données - Google Patents

Mode opératoire et train de laminoirs pour laminer continuellement une matière à laminer profilée en une section transversale de dimensions exactes et données Download PDF

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Publication number
EP0340505A2
EP0340505A2 EP89106675A EP89106675A EP0340505A2 EP 0340505 A2 EP0340505 A2 EP 0340505A2 EP 89106675 A EP89106675 A EP 89106675A EP 89106675 A EP89106675 A EP 89106675A EP 0340505 A2 EP0340505 A2 EP 0340505A2
Authority
EP
European Patent Office
Prior art keywords
rolling
caliber
rollers
mill according
roller mill
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
EP89106675A
Other languages
German (de)
English (en)
Other versions
EP0340505B1 (fr
EP0340505A3 (en
Inventor
Hugo Dr. Feldmann
Günter Kirchmann
Hubert Müller
Paul Kreisel
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.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
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 SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Priority to AT89106675T priority Critical patent/ATE102086T1/de
Publication of EP0340505A2 publication Critical patent/EP0340505A2/fr
Publication of EP0340505A3 publication Critical patent/EP0340505A3/de
Application granted granted Critical
Publication of EP0340505B1 publication Critical patent/EP0340505B1/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
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
    • B21B31/24—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal by screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
    • 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
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/12—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process axes being arranged in different planes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B21B31/04—Rolling stand frames or housings; Roll mountings ; Roll chocks with tie rods in frameless stands, e.g. prestressed tie rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting
    • 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
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/36—Spacers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/02—Speed
    • B21B2275/04—Roll speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/48—Tension control; Compression control
    • B21B37/52—Tension control; Compression control by drive motor control

Definitions

  • the invention relates to a working method for the continuous rolling of a profiled rolling stock onto a predetermined, dimensionally accurate (finished) profile cross-section by means of successively arranged roll stands with pairs of rollers, the pairs of axes of which are perpendicular to one another, and which have caliper channels which are opposite one another and determine the respective cross-sectional profile of the continuous rolling profile strand and on a roller mill to carry out this working process.
  • a strand of rolled material emerging from a continuous rolling mill for example approximately 20-25 mm in diameter, generally has tolerance deviations of +/- 0.5 mm.
  • the tolerance deviations should only be 0.05 mm and less. Since the rolling stock is also subject to temperature fluctuations over its length and due to other influencing factors such as material quality, tension and swirl between the rolling stands of the rolling mill etc., a cross section of the rolling stock emerging from the last rolling stand results, the shape and behavior of which are not precise for further rolling is predeterminable, also arise when rolling, for example with a a pair of rollers forming a self-contained, closed roll caliber, under the pre-tensioning force which substantially exceeds the rolling force, difficulties which entail a number of disadvantages.
  • the invention has for its object to improve the generic working method so that the difficulties and disadvantages mentioned are avoided or eliminated and to create suitable devices for performing this working method.
  • the solution to this problem according to the invention is based on the knowledge that a uniform design of the cross-sectional shape and the structure of the rolling stock emerging from the rolling mill is achieved by distributing the decreases as evenly as possible, i.e. little increase in width and uniform structure compaction, and by uniform control of the rolling temperatures over the length of a rolling stock and is reached over its cross section.
  • the deformation occurs from the decrease in height caused by the passage of the rolling stock through the rolling caliber. This results in an increase in length and an increase in width.
  • an increase in length is primarily desired.
  • the increase in width generally represents a less desirable appearance.
  • the cross-sectional sections which are displaced in the course of this process decrease little or not at all in height and thus experience only inadequate or no extension.
  • the relationship between the individual cross-sectional sections means that the widening sections, which experience only a slight decrease in height, are taken along and stretched over the tensile forces that occur. These widening edge sections are exposed to a risk of edge tearing. If such a spreading occurs, this requires a correspondingly greater decrease in height in the next rolling caliber and thus greater rolling forces, greater deformation moments and thus a higher expenditure of power. Spreading does not only require greater performance, rather, there must either be larger decreases per rolling caliber or a larger number of rolling calibres that take effect one after the other must be provided.
  • roll deformation should therefore be aimed for, with the smallest possible spreading.
  • the size of such spreads is influenced by the temperature of the rolling stock, the friction behavior between the roll and the rolling stock, the rolling speed, the shape of the caliber and the roll diameter.
  • the rolling stock temperature is predetermined by the rolling mill and cannot be influenced in this respect.
  • the friction behavior between the roller and the rolling stock can be designed favorably by appropriately designing the surface.
  • the rolling speed is also given by the rolling train.
  • the caliber shape is intended to largely avoid spreading and to achieve the most even possible decrease across the width of the rolling stock.
  • the roll diameter which can best be influenced in the context in question, should be kept as small as possible, since this also means that the width is small and, with a constant decrease in height, the number of roll calibers to be traversed is smaller and the resistance to deformation is low. In addition, smaller rolling forces and smaller torques occur, so that only smaller drive powers have to be provided. In addition, the tendency to spread is kept small, roller wear is reduced and the desired narrow tolerances can be better maintained. It is also important that favorable forming conditions arise in the rolling caliber and that the surface of the rolling stock is also improved by the short contact distances between the roll and the rolling stock.
  • the solution of the above-mentioned object is therefore characterized in that the roll track in one or more roughing stands runs locally in the circumferential area of its cross-section which, after leaving the last roughing stand in the subsequent main stand, into the region of the line of contact of both rolls of this main stand, so that it is precalibrated in each case the entire material of the rolling stock entering the main stand fills the caliber of this main stand without significantly deforming this contact area of the rolling line.
  • the speed of the pairs of rolls of the main stand can be regulated as a function of the speed of the rolls of the last roughing stand by applying a very slight pull on the rolling stock and the speed of the rolls of the roughing stand can also be regulated while allowing a slight slip between these rolls and the rolling stock be managed.
  • a roller train for carrying out this working method can have at least two successive dimensional rolling stands, in which the rollers of the roller pairs can be positioned against one another with a pre-tensioning force that significantly exceeds the rolling force, and in which the geometric shape of the course of the circumferential lines of the respective caliber formed in the upstream Dimensional mill stands at least in the wall area of the bottom of both caliber channels and in the downstream dimension mill stands essentially in the entire wall area of both caliber channels correspond to the geometric shape of the profile of the circumferential line of the predetermined finished profile cross section.
  • the distance between the centers of the bottom regions of the caliber of the upstream dimensional rolling stands is slightly less than or equal to the predetermined finished diameter of the profile cross section formed in this region.
  • At least the rollers of the roller pairs of the downstream ones can also be used.
  • Made-to-measure roll stands have peripheral sections which are known and run laterally outside the caliber channels, lie on top of one another during the rolling and are pressed against one another with the prestressing force.
  • the rollers of the roller pairs can be positioned away from each other within the elastic range of the superimposed circumferential sections so that they can be controlled and positioned against the pretensioning force, and the edge edges of the caliber channels expediently have a rounding that has a slight, laterally outward symmetrical bulge in the course of the circumferential line of the caliber bring in, the rounding may have the shape of a radius which is, for example. 1 to 2 mm.
  • the wall area of the bottom of the caliber channels of the upstream measuring mill stand which corresponds to the geometric shape of the circumferential line of the predetermined finished profile cross section, is dimensioned such that it covers the area of the symmetrical bulge of the circumferential line of the caliber of the downstream measuring mill stand.
  • the dimensional roll stands explained can also be arranged in a roll train instead of the roughing, intermediate and / or final stand sections of this roll train. There is also the possibility of rolling an intended intermediate profile cross-section to arrange such measuring roll stands within the successive roll stands of a roll train.
  • One or more of the roller pairs can also be supported by backup rollers and the drive can be effected directly or via these backup rollers.
  • the pairs of rollers can also be carried by the support rollers and guided radially and / or axially by them.
  • the prestressing force can also be transmitted from the support rollers to the roller pairs and two support rollers supporting the respective rollers of the roller pair can be provided.
  • the pre-rolling calibers and the roller pairs forming self-contained rolling calibres behind the first finishing relay can be positioned on a roller mill that has a first finishing relay of independent rolling stands arranged one behind the other and a second finishing relay that is arranged after this and consists of a plurality of rolling stands combined in a finishing block without the second finishing line or between the first and second finishing lines or behind the second finishing line.
  • the diameter ratio of the rolls of the pairs of rolls forming the pre-roll calibres and of the rolls of the last roll stand of the continuous rolling train feeding the rolling stock can reach a value of 0.7 and less.
  • the diameters of the pre-rolling caliber and the pairs of rolls forming the self-contained rolling caliber can be approximately the same among themselves and can have a diameter of approximately 250 mm and less, designed as rolling disks.
  • the distance between the respective common axis planes of the axes of the pairs of rollers forming the pre-rolling caliber and the self-contained rolling caliber corresponds approximately to the sum of the diameter halves of the two roller pairs in such a dimensioning of the roller diameter, then there is such a short distance between the two roller calibers that the temperature changes or swirl tendencies influencing the rolling stock strand cannot occur or can only occur to a barely measurable extent.
  • the pair of rollers forming the pre-rolling caliber can be stored in bearing pieces which are connected to one another by adjustable traction spindles and which are supported against the tensioning force of these traction spindles by pistons which can be pressurized with fluid and against which interchangeable stop pieces of different heights can be placed.
  • This arrangement allows it, the rollers of the roller pairs forming the pre-roll caliber against the clamping force exerted by the tension spindles, which acts here as a preload, within the elastic range of the tension spindles by means of precisely metered changes in the pressure of the pressure medium acting on the pistons, with extremely small adjustment paths. In practice it has been shown that travel ranges of 0.01 mm and less can be set.
  • the pre-rolled caliber can be quickly and precisely adapted to the prevailing circumstances within a few rolling stock test runs, and readjustments are also possible during the rolling stock run under rolling pressure. Further training and application possibilities of the devices according to the invention are set out in the subclaims.
  • the deformation of the profile cross section of the rolling stock strand in the front and the main stand arranged closely behind it has features which are reminiscent of the deformation profile of a strand in the caliber of a drawing die.
  • the results obtained also correspond to those that can be achieved when pulling strands, namely in addition to a surprisingly large decrease, which can amount to 10 to 15%, a rolling stock strand is produced, the finished profile of which is only slight deviations in both round and square cross sections shows the specified target values and in particular maintains this cross-sectional constancy over the entire rod length.
  • the pair of vertical rolls 1 forming an open pre-rolling caliber and the pair of horizontal rolls 2 forming the self-contained rolling caliber are arranged closely one behind the other in the direction of the rolling stock movement line indicated by an arrow W; here with a distance D between the two respective common axial planes of the roller pairs 1 and 2, which is slightly larger than the sum of the two diameter halves M1 and M2 of these two roller pairs 1 and 2.
  • the device is located behind the vertical roller pair, designated 3, of the last stand 4 a continuous profile rolling train, not shown, from which the profiled rolling stock exits in the direction of the rolling stock movement line W and enters the device.
  • the pair of horizontal rolls 2 is supported in a braced roll stand 5, which is not part of the invention, and which the rolls of this pair of horizontal rolls 2 have the one expected Rolling force pushing against each other significantly exceeding.
  • This pair of horizontal rollers 2 is driven by a motor 6 via an intermediate gear 7 and articulated spindles 8.
  • the pair of vertical rollers 1 is driven by a motor 9 via an articulated spindle 10 and an angular gear 11 in a manner to be explained in more detail later on by means of a toothed belt 12.
  • the pair of vertical rollers 1 are each mounted in a bearing piece 13 and 14, respectively. Both bearing pieces are displaceable in V-grooves 15a on a support plate 15 and can be fixed thereon with clamping means 16.
  • the support plate 15 stands on a support box 17, which is supported together with the horizontal roll stand 5 by a base plate 18, which in turn can be pulled off in the direction of arrow A from the common sole plate 19.
  • the base plate 18 can be fixed relative to the sole plate 19 with clamping devices 20 (FIGS. 1 and 4).
  • the articulated spindle 10 is released from the angular gear 11, while the articulated spindles 8 for the drive transmission to the horizontal roll stand 5 are released from the intermediate gear 7 and from an extension piece 18a the base plate 18 can be pulled out of the rolling line with this and the units standing thereon; as well as the angular gear 11 also carried by the base plate 18.
  • pairs of tension spindles 21 and 22 are guided through the two bearing pieces 13, 14 of the rollers of the pair of vertical rollers 1 above and below these rollers. Toothed projecting thread end of these spindles 21, 22 are toothed belt pinions 23, 24 screws, while ratchet wheels 25 are non-rotatably placed on the other ends, which can be fixed against rotation relative to the bearing pieces 13 and 14 by means of locking rods 26.
  • a toothed belt 27 is guided around the toothed belt pinion 23, 24 (cf. FIG. 7).
  • a toothed belt pinion 23 is equipped with a square drive 28.
  • the toothed belt pinions 23 and 24 are mounted in bearing plates 29, which together with spacers 30 form a bearing housing, which can be pressed against the bearing piece 14 against it.
  • This threaded stud extension 32a is guided in a longitudinally displaceable manner in an annular piece 33, which is fixedly connected to the support plate 15 via a holding plate 34.
  • adjusting nuts 35 are screwed onto the threaded stud attachment.
  • a pot piston 36 and an exchangeable stop piece 37 are arranged opposite each other in corresponding bore recesses above and below the vertical rollers 1.
  • Toothed belt wheels 16 are seated on the downward-facing axial shoulders 1a of the vertical rollers 1, which are looped around by the already mentioned toothed belt 12 with a reversible loop.
  • This toothed belt 12 is guided around a drive pinion 38 seated on the angular gear 11 and a tensioning roller 39.
  • the axis 39a of this tensioning roller (FIG. 3) is mounted in the carrying case 17 in an elastically supported guide 40 so that it can be moved and locked.
  • the two bearing pieces 13, 14, after they have been placed on the support plate 15, can be guided in a longitudinally displaceable manner in the V-grooves 15a via the toothed belt pinion 23 Rotating the square drive 28 and transmitting this rotary movement through the toothed belt 27 to all four toothed belt sprockets 23, 24 and applying a corresponding train on the traction spindles 21, 22 are moved against each other, the pot pistons 36 in one bearing piece 14 on the stop pieces 37 in the other Support bearing piece 13.
  • a selectable stop piece 37 with the appropriate height must be used.
  • the handlebar 32 is fixed relative to the ring piece 33 with the adjusting nuts 35 and one of the two bearing pieces 13, 14, here the bearing piece 13, is fixed on the support plate 15 with the aid of the clamping means 16.
  • the other bearing piece 14 must remain movable on the support plate 15, because the fine stone setting of the caliber K is brought about by the fact that the desired change in width within the elastic range of the tensioning spindles 21, 22 against the clamping pressure of the tensioning spindles 21, 22 is controlled by small, controlled pressure additions of the caliber K is effected in the smallest sections of fractions of mm necessary for the implementation of the working method, and this requires a corresponding transverse displaceability of the bearing piece 14.
  • the vertical rolling device consisting of support plate 15, bearing pieces 13, 14 with vertical rollers 1, toothed belt wheels 1b and tensioning roller 39 are removed with the support plate 15 upwards; the toothed belt drive pinion 38 remains with the toothed belt 12 in the carrier box 17.
  • the support plate 15 represents a kind of interchangeable plate with which a prepared second set of these parts can be exchanged for the first.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
EP89106675A 1988-05-05 1989-04-14 Mode opératoire et train de laminoirs pour laminer continuellement une matière à laminer profilée en une section transversale de dimensions exactes et données Expired - Lifetime EP0340505B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89106675T ATE102086T1 (de) 1988-05-05 1989-04-14 Arbeitsverfahren und walzenstrasse zum kontinuerlichen walzen eines profilierten walzgutstranges auf einen vorgegebenen, massgenauen (fertig-) profilquerschnitt.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3815312 1988-05-05
DE3815312 1988-05-05

Publications (3)

Publication Number Publication Date
EP0340505A2 true EP0340505A2 (fr) 1989-11-08
EP0340505A3 EP0340505A3 (en) 1990-05-23
EP0340505B1 EP0340505B1 (fr) 1994-03-02

Family

ID=6353701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89106675A Expired - Lifetime EP0340505B1 (fr) 1988-05-05 1989-04-14 Mode opératoire et train de laminoirs pour laminer continuellement une matière à laminer profilée en une section transversale de dimensions exactes et données

Country Status (7)

Country Link
US (1) US5000023A (fr)
EP (1) EP0340505B1 (fr)
JP (1) JP2685892B2 (fr)
CN (1) CN1038954A (fr)
AT (1) ATE102086T1 (fr)
DE (1) DE58907057D1 (fr)
RU (1) RU2062672C1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0476467A2 (fr) * 1990-09-20 1992-03-25 Sms Schloemann-Siemag Aktiengesellschaft Procédé pour la fabrication de barres d'acier rondes claires
EP0560115A1 (fr) * 1992-03-07 1993-09-15 Sms Schloemann-Siemag Aktiengesellschaft Procédé et laminoir pour le laminage de précision de fil respectivement de produit laminé à section circulaire
EP0726100A1 (fr) 1995-02-03 1996-08-14 Morgan Construction Company Unité de laminage
US6035685A (en) * 1995-01-30 2000-03-14 Morgan Construction Company Rolling unit
CN103274880A (zh) * 2013-05-24 2013-09-04 天津市天锻压力机有限公司 精密数控双向压药液压机

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Publication number Priority date Publication date Assignee Title
IT1252165B (it) * 1991-12-04 1995-06-05 Giulio Properzi Procedimento e gruppo di laminazione di metalli per la produzione di una barra o vergella tonda da una barra o vergella tonda di maggiore diametro
CN103350114B (zh) * 2013-07-19 2015-09-16 莱芜钢铁集团有限公司 履带型钢轧辊双孔型及轧制方法
CN105499267A (zh) * 2016-02-15 2016-04-20 中钢集团郑州金属制品研究院有限公司 一种活塞环用刮片环扁钢带的成型方法
DE102017215713A1 (de) * 2017-09-06 2019-03-07 Sms Group Gmbh Verfahren zum Betrieb einer walz- oder hüttentechnischen Anlage

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US3194044A (en) * 1958-03-14 1965-07-13 Lasalle Steel Co Rolled bars and method for manufacturing
DE2732496A1 (de) * 1977-07-19 1979-02-01 Kocks Gmbh Friedrich Walzwerk zum einadrigen walzen von runden, sechseckigen oder quadratischen staeben
DE3025655A1 (de) * 1979-08-22 1981-03-26 SKET Schwermaschinenbau Magdeburg GmbH, 39112 Magdeburg Verfahren zum umformen von walzgut
JPS58135707A (ja) * 1982-02-08 1983-08-12 Daido Steel Co Ltd 精密圧延方法
JPS60152302A (ja) * 1984-01-19 1985-08-10 Daido Steel Co Ltd 棒鋼の精密圧延方法
JPS61229403A (ja) * 1985-04-03 1986-10-13 Shigenobu Ueno 自送式ロ−ラ−ダイス

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Publication number Priority date Publication date Assignee Title
US3194044A (en) * 1958-03-14 1965-07-13 Lasalle Steel Co Rolled bars and method for manufacturing
DE2732496A1 (de) * 1977-07-19 1979-02-01 Kocks Gmbh Friedrich Walzwerk zum einadrigen walzen von runden, sechseckigen oder quadratischen staeben
DE3025655A1 (de) * 1979-08-22 1981-03-26 SKET Schwermaschinenbau Magdeburg GmbH, 39112 Magdeburg Verfahren zum umformen von walzgut
JPS58135707A (ja) * 1982-02-08 1983-08-12 Daido Steel Co Ltd 精密圧延方法
JPS60152302A (ja) * 1984-01-19 1985-08-10 Daido Steel Co Ltd 棒鋼の精密圧延方法
JPS61229403A (ja) * 1985-04-03 1986-10-13 Shigenobu Ueno 自送式ロ−ラ−ダイス

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PATENT ABSTRACTS OF JAPAN, Band 9, Nr. 316 (M-438)(2039) 12 Dezember 1985; & JP-A-60 152 302 (DAIDO TOKUSHUKO K.K.) 10-08-1985 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0476467A2 (fr) * 1990-09-20 1992-03-25 Sms Schloemann-Siemag Aktiengesellschaft Procédé pour la fabrication de barres d'acier rondes claires
EP0476467A3 (en) * 1990-09-20 1993-03-03 Sms Schloemann-Siemag Aktiengesellschaft Method for manufacturing bright round steel bars
EP0560115A1 (fr) * 1992-03-07 1993-09-15 Sms Schloemann-Siemag Aktiengesellschaft Procédé et laminoir pour le laminage de précision de fil respectivement de produit laminé à section circulaire
US6035685A (en) * 1995-01-30 2000-03-14 Morgan Construction Company Rolling unit
EP0726100A1 (fr) 1995-02-03 1996-08-14 Morgan Construction Company Unité de laminage
CN103274880A (zh) * 2013-05-24 2013-09-04 天津市天锻压力机有限公司 精密数控双向压药液压机

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DE58907057D1 (de) 1994-04-07
JPH01313101A (ja) 1989-12-18
CN1038954A (zh) 1990-01-24
JP2685892B2 (ja) 1997-12-03
EP0340505B1 (fr) 1994-03-02
ATE102086T1 (de) 1994-03-15
RU2062672C1 (ru) 1996-06-27
EP0340505A3 (en) 1990-05-23
US5000023A (en) 1991-03-19

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