EP0509204B1 - Einrichtung zum Walzen von Stabstahl und Draht - Google Patents

Einrichtung zum Walzen von Stabstahl und Draht Download PDF

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Publication number
EP0509204B1
EP0509204B1 EP92102242A EP92102242A EP0509204B1 EP 0509204 B1 EP0509204 B1 EP 0509204B1 EP 92102242 A EP92102242 A EP 92102242A EP 92102242 A EP92102242 A EP 92102242A EP 0509204 B1 EP0509204 B1 EP 0509204B1
Authority
EP
European Patent Office
Prior art keywords
roll
fitting
rolling
rollers
exit
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
EP92102242A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0509204A3 (en
EP0509204A2 (de
Inventor
Folker Dr. Flemming
Gerd-Jürgen Hopf
Peter Kliemann
Ernö Kovacs
Reinhard Dr. Kuhne
Fritz Reichert
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.)
Schwermaschinenbau Kombinat Ernst Thalmann VEB
SKET Schwermaschinenbau Magdeburg GmbH
Original Assignee
Schwermaschinenbau Kombinat Ernst Thalmann VEB
SKET Schwermaschinenbau Magdeburg GmbH
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 Schwermaschinenbau Kombinat Ernst Thalmann VEB, SKET Schwermaschinenbau Magdeburg GmbH filed Critical Schwermaschinenbau Kombinat Ernst Thalmann VEB
Publication of EP0509204A2 publication Critical patent/EP0509204A2/de
Publication of EP0509204A3 publication Critical patent/EP0509204A3/de
Application granted granted Critical
Publication of EP0509204B1 publication Critical patent/EP0509204B1/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
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work
    • B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
    • B21B39/165—Guides or guide rollers for rods, bars, rounds, tubes ; Aligning guides
    • 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

Definitions

  • Rolling in calibers is the most common form of rolling bars and wire. In the pre-season, the most common work is with box or spike edge calibers. Aligning the inlet fittings to the caliber is very complex. According to DE-A-32 24 022 a method is known in which worked wildly on smooth rollers only. The selected calibration can only be used if the b / h ratio is less than 1.5.
  • the design of the inlet and outlet fittings, which must extend to the middle of the roll, collide in the middle of the roll and the contour of which is precisely adapted to the roll radius, is very complex. This means that it is not possible to roll different cross-sections with one and the same pair of rollers or fittings.
  • the inlet fitting has fluted inner sides which are adapted to the width of the rolling stock and which are to be adjusted with a play of 1 to 5 mm to the rolling stock. Since different steel grades also have different widths, this setting is complicated and hardly feasible. The differentiated spread can exceed the range mentioned. So when changing the material, the valve must also be changed or its setting changed.
  • the connected inlet and outlet fittings form a "tunnel", which is heated up so much that it leads to deformations and functional impairments and the scale clogs the guides, which leads to accidents.
  • the invention specified in claims 1 to 4 is based on the problem, starting from the prior art mentioned at the outset, to develop a device which simplifies the setting of the rollers and fittings and limits the diagonal distortion of the rolling stock.
  • the invention improves the guidance of the material, minimizes the number and time for the roll change and increases the availability of the rolling mill.
  • FIG. 1 A suitable caliber sequence is shown in FIG. 1.
  • Square cross-sections Oa) or rectangular cross-sections Ob) with the same area are used for piercing.
  • the individual variants are illustrated using the example of eight roll passes.
  • the first stitch is formed by a flat stitch 1a or, if the rolling diagonals d1 / d2 ⁇ 1.02 require it, by a box caliber 1b.
  • d1 always represents the larger diagonal.
  • the rolling stock in the stands G2, G3, G4, G5, G6, G7 passes through the flat stitches 2a, 3a, 4a, 5a, 6a, 7a, and then in the stand G8 into a Swedish oval 8s.
  • the outlet cross-section from the last flat stitch is 900 mm2 ⁇ A ⁇ 15700 mm2 depending on the application cross-section.
  • the geometry for the Sweden oval 8s is shown in FIG. 2.
  • caliber 2b, 4b, 6b and flaxed 3a, 5a, 7a alternate slightly from scaffold G2, whereupon the Swedish oval 8s again runs through as a transition to the shape calibers.
  • a flat rolling sequence or the exchange of flat passes and slightly cut calibers can be guaranteed in advance.
  • the use of one or two slightly incised calibres 6b, 7b in front of the Sweden oval 8s is only selected if the other preceding stands are rolled without a caliber.
  • a further variant consists in that after stand G1, provided with uncalibrated rollers for flat stitch 1a or box caliber 1b, the flat stitches 2a and 3a follow.
  • the G7 framework can also be provided with a slightly incised 7b caliber.
  • An additional possibility is given if, after the flat stitches 1a and 2a, the slightly incised calibers 3b, 4b, followed by the flat stitches 5a, 6a, 7a or the slightly incised caliber 7b. It is also possible to design the slightly incised calibers 2b, 3b, 4b, 5b, 6b as a box caliber 1b and to design the transition to the shape caliber as a Swedish oval 8s. In reverse duos and trios, the scaffolds are identical to the sequence of stitches.
  • the ratio of the rolling stock height h 1 to the double screwing depth 2 t is in the range 2 ⁇ h 1/2 t ⁇ 10.
  • the geometrical relationships between the incoming rolling stock and the Swedish oval 8s can be seen in FIG. 2.
  • the dimensioning is chosen so that the wear occurring in the caliber is minimized as far as possible and a trouble-free rolling process is guaranteed.
  • the distance z is calculated from the caliber dimensions caliber basic width b KG , caliber depth b k , radius R, caliber height h K and roll gap s W , which indicates the distance from the intersection of the straight line of the caliber flank and caliber base - b KG - the radius R begins.
  • the caliber must be dimensioned so that the incoming dimension of the rolling stock, the rolling stock height h o , the requirement h o ⁇ b KG - 2z and the inlet fitting is positioned so that the central inlet is guaranteed in any case, ie the rolling stock is not starts up in radius R, which would result in increased wear. From the description it can be seen that, regardless of the steel grades to be rolled, after the first rolling stand has been passed, the rolling stock passes through the subsequent rolling stands in n ⁇ 1 caliber-free passes, form passes in n ⁇ 1 cut or shape calibres and this is repeated as often as required.
  • the inlet fitting 13 in the first roll stand for flat rolls is designed as a 4-roller fitting.
  • a double roller valve (not shown in more detail) is arranged in the subsequent rolling stands. Seen in the rolling direction, the rolling stock is fed to the rollers 16, 16 'via an inlet funnel 6, an inlet-side pair of rollers 5, 5', a lateral guide surface with an integrated water box 2 and a pair of rollers-side rollers 4, 4 '.
  • the setting of the roller pairs 5, 5 'and 4, 4' to the rolling stock is chosen so that b o ⁇ a ⁇ c, where b o incoming rolling stock dimension, a distance between the two rollers of the roller pair 4, 4 'to each other and c distance of the means two rollers of the pair of rollers 5, 5 'to each other.
  • Slots 3 are provided in the water box 2 for cooling the pairs of rollers 5, 5 'and 4, 4'.
  • the inlet fitting 13 is provided with guide jaws 1, 1 'which accommodate the wear plates 7, 7'.
  • the outer contour 17 of the guide jaws 1, 1 ' is not necessarily adapted to the rolling geometry and is at a distance of 3 to 40 mm from the rollers 16, 16'. Behind the rollers 16, 16 ', the scraper 14 of the outlet fitting is arranged at a distance f from the center of the roller as a function of the roller gap s w , the same conditions as above.
  • the outer contours 18 of the scraper 14 are at a distance of 3 to 5 mm from the roller surface.
  • Characteristic of the dimensioning of the scraper 14 is that its height g between the top and bottom plate 9, 10 the tapered rolling height h 1 depending on the roll gap s w and the distance i of the cheeks 8, 8 'the tapering rolling stock width b 1 depending on the rolling gap s w towers.
  • Openings 15 are provided in the stripper 14 between the upper, lower part and cheeks 8, 8 ′ in order to improve the cooling and to flush out the scale.
  • slots 11 are arranged in the lower part through which scale and water can run off.
  • the setting of the 4-roller valve is chosen so that the distance c of the inlet-side roller pair 5, 5 'is 0 to 5 mm greater than the distance a of the roller-side roller pair 4, 4', which in turn with the condition - 2 ⁇ s w ⁇ 3 mm for the incoming rolling stock dimension b.
  • the roll angle of attack ⁇ is chosen for a continuous stack so that it satisfies the condition in the mill stand G1 14 ⁇ ⁇ ⁇ 30 ° and in the subsequent mill stands G2 to G7 18 ⁇ ⁇ ⁇ 40 °. For reversal duo and trio, 14 ⁇ ⁇ ⁇ 30 ° applies. These values refer to new rollers.
  • the ratio b o / h o is ⁇ 2.3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP92102242A 1991-04-18 1992-02-11 Einrichtung zum Walzen von Stabstahl und Draht Expired - Lifetime EP0509204B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4112931 1991-04-18
DE4112931A DE4112931A1 (de) 1991-04-18 1991-04-18 Verfahren und einrichtung zum walzen von stabstahl und draht

Publications (3)

Publication Number Publication Date
EP0509204A2 EP0509204A2 (de) 1992-10-21
EP0509204A3 EP0509204A3 (en) 1992-12-16
EP0509204B1 true EP0509204B1 (de) 1995-04-19

Family

ID=6429991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92102242A Expired - Lifetime EP0509204B1 (de) 1991-04-18 1992-02-11 Einrichtung zum Walzen von Stabstahl und Draht

Country Status (6)

Country Link
EP (1) EP0509204B1 (cs)
AT (1) ATE121322T1 (cs)
CS (1) CS119192A3 (cs)
DE (2) DE4112931A1 (cs)
RU (1) RU2105619C1 (cs)
SK (1) SK279259B6 (cs)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2221654C1 (ru) * 2002-06-05 2004-01-20 Магнитогорский государственный технический университет им. Г.И.Носова Способ изготовления низкоуглеродистой арматурной проволоки
RU2349402C1 (ru) * 2007-06-22 2009-03-20 Открытое акционерное общество "Электростальский завод тяжелого машиностроения" Задний стол трубопрокатного стана
RU2354473C1 (ru) * 2007-07-16 2009-05-10 Открытое акционерное общество "Магнитогорский металлургический комбинат" Устройство для натяжения движущейся полосы
DE102010009593A1 (de) * 2010-02-26 2011-09-01 Kocks Technik Gmbh & Co. Kg Walzgerüst
RU2680336C1 (ru) * 2016-12-12 2019-02-19 федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет (национальный исследовательский университет)" Непрерывный мелкосортный стан с разделяющей раскат системой калибров
CN108405638B (zh) * 2018-03-14 2021-02-26 马鞍山钢铁股份有限公司 一种线材轧件导槽及防止线材轧件划伤的方法
CN111644461A (zh) * 2020-05-25 2020-09-11 山东莱钢永锋钢铁有限公司 一种轧制设备的轧制方法
CN112575450A (zh) * 2020-12-09 2021-03-30 申洲针织（安徽）有限公司 一种自动缝制锁眼
CN117619909B (zh) * 2024-01-25 2024-04-02 江苏盛日机械设备制造有限公司 一种角钢轧制导卫

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3600924A (en) * 1969-03-28 1971-08-24 Denzil O Martin Method of rolling titanium and other rods
AU458531B2 (en) * 1973-08-06 1975-02-27 M.I.M. Rolling Consultants (Aust.) Pty. Ltd. Rod rolling
SE399521B (sv) * 1974-09-24 1978-02-20 Metalform Ab Sett att i ett flertal stick nedvalsa ett metallemne
GB2101025B (en) * 1981-06-30 1985-10-02 Kawasaki Steel Co Rolling steel rods and wires with grooveless rolls

Also Published As

Publication number Publication date
EP0509204A3 (en) 1992-12-16
CS119192A3 (en) 1992-11-18
DE4112931A1 (de) 1992-10-22
RU2105619C1 (ru) 1998-02-27
DE59201943D1 (de) 1995-05-24
EP0509204A2 (de) 1992-10-21
SK279259B6 (sk) 1998-08-05
ATE121322T1 (de) 1995-05-15

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