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EP0501211B1 - Procédé pour actionner une presse à refouler - Google Patents

Procédé pour actionner une presse à refouler Download PDF

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Publication number
EP0501211B1
EP0501211B1 EP92102140A EP92102140A EP0501211B1 EP 0501211 B1 EP0501211 B1 EP 0501211B1 EP 92102140 A EP92102140 A EP 92102140A EP 92102140 A EP92102140 A EP 92102140A EP 0501211 B1 EP0501211 B1 EP 0501211B1
Authority
EP
European Patent Office
Prior art keywords
slab
upsetting
press
angle
rotation
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
EP92102140A
Other languages
German (de)
English (en)
Other versions
EP0501211A2 (fr
EP0501211A3 (en
Inventor
Gerhard Heitze
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
Publication of EP0501211A2 publication Critical patent/EP0501211A2/fr
Publication of EP0501211A3 publication Critical patent/EP0501211A3/de
Application granted granted Critical
Publication of EP0501211B1 publication Critical patent/EP0501211B1/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
    • 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
    • B21B1/02—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/02—Special design or construction
    • B21J7/18—Forging machines working with die jaws, e.g. pivoted, movable laterally of the forging or pressing direction, e.g. for swaging
    • 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
    • B21B1/02—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B21B1/024—Forging or pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/20—Drives for hammers; Transmission means therefor
    • B21J7/22—Drives for hammers; Transmission means therefor for power hammers
    • B21J7/32—Drives for hammers; Transmission means therefor for power hammers operated by rotary drive, e.g. by electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/06—Swaging presses; Upsetting presses

Definitions

  • the invention relates to a method for operating an upsetting press to reduce the width of a hot slab cast in a continuous casting installation by laterally pressing the slab between the compression tools of the upsetting press that can be moved toward and away from one another by a stroke eccentric, during which the slab moves on a roller table through the upsetting press becomes.
  • a method for operating an upsetting press to reduce the width of a hot slab cast in a continuous casting installation by laterally pressing the slab between the compression tools of the upsetting press that can be moved toward and away from one another by a stroke eccentric, during which the slab moves on a roller table through the upsetting press becomes.
  • Such a method is e.g. known from EP-A-0 400 385.
  • Upsetting presses for reducing the width of hot, continuously cast slabs are known. They are used in order to be able to carry out the most extensive rolling program possible with as few slab widths as possible. It had been shown that the adjustment of adjustable molds in continuous casting plants for the production of slabs of different widths is too slow and too expensive. Furthermore, it had been shown that the lateral upsetting of a hot, continuously cast slab between the rolls of a heavy vertical stand did not in many cases lead to the expected success, since for technical reasons the slab material bulged in the edge area of the slab during upsetting and during the flat rolling at the front end of the slab formed tongue-like areas and fishtail-like areas at the end of the rolled tape.
  • the lateral upsetting of a hot slab between the pressing tools of an upsetting press has the advantage that the slab material is compressed up to far to the middle of the slab, as a result of which the edge beads that occur during upsetting rolling are almost completely eliminated and in particular the formation of fish tails at the ends of the slab and thus also at the ends of the hot-rolled strip is significantly lower than with upsetting rolling in a vertical stand.
  • the slabs compressed by the upsetting press have an almost rectangular cross section. Due to the well-formed slab ends and the well-formed slab cross-section, less crop scrap is produced in the subsequent rolling mill than before, which increases the output of the entire rolling mill.
  • optimally designed slab edges are ensured by upsetting due to the relatively long engagement length of the pressing tools.
  • a hot continuously cast slab could be reduced in width by up to 300 mm in just one pass, i.e. the upsetting press represents a highly effective forming stage in front of the hot rolling mill.
  • the upsetting press for reducing the width of rolling stock in particular the slab width in hot wide strip roughing mills according to European patent application 0 400 385 A2 (FIG. 1), has tool carriers 2 arranged on both sides of the slab edge and receiving the pressing tools 1 that point towards each other.
  • a steering system 4 actuated by a crank mechanism 3 is provided, which can be moved essentially in the direction of the reduction.
  • the crank mechanism is arranged in a crankcase 5, which is arranged adjustable in a press frame 6 with respect to the slab width.
  • the tool carrier receiving the pressing tool engages essentially in the direction of the slab transport 8 acting feed drive 9.
  • the feed drive is designed as a hydraulic piston-cylinder unit which can be moved according to a distance / time function and which, depending on the desired feed size, enables the pressing tool to be synchronized with the moving slab.
  • the upsetting press automatically switches to stop-and-go operation. There is no feed for stop-and-go operation, ie the slab rests on the roller table during upsetting. It is only transported from the slab edge when the pressing tools move back.
  • the object of the present invention is to expand the operation of such a compression press, in particular to increase the production or throughput of slabs to be compressed with simple means, without the main drive for the crank mechanism actuating the pressing tools or the hydraulic feed drive for the pressing tool carrier in its performance must be increased.
  • This object is achieved with the measures of claim 1.
  • Claims 2 to 4 each show advantageous developments of the measures according to claim 1.
  • the slab in the time phase in which the pressing tools have no contact with the slab edge is accelerated from the predetermined throughput speed and decelerated again to this given throughput speed, the shrinkage decrease possibly being reduced beforehand; the latter in particular if the maximum compressive force would be exceeded in individual cases, e.g. for reasons of deformation resistance (material, temperature, slab thickness, etc.).
  • the throughput of the compression press or the production of compressed slabs can be increased up to 50% in a surprisingly simple manner, without the existing design of the compression press having to be changed and without the drive power for the main drive of the lifting eccentric, ie the crank drive , by which the tool carrier including the pressing tools are moved, its performance has to be increased and without the performance of the piston-cylinder unit acting on the tool carrier having to be changed.
  • the slab is moved approximately at an angle of rotation of 0 ° to 180 ° of the upsetting stroke eccentric roller table rollers at the specified throughput speed and that the slab is accelerated and decelerated again approximately at an angle of rotation of 180 ° to 360 ° by driver rollers becomes. It is expedient that the slab is accelerated in the angle of rotation of approximately 180 ° to 360 ° of the upsetting stroke eccentric to approximately twice to four times the specified throughput speed and then decelerated to it.
  • upsetting tools driven in opposite directions by eccentric shafts are arranged in pressing tool carriers which are guided displaceably in the press frame.
  • the press frame is divided into two press frame halves arranged symmetrically to the tool, which are connected to one another via four columns that run parallel to one another and in the direction of compression.
  • Devices are arranged on the columns for gradually advancing the workpiece between the upsetting steps and for holding the workpiece during the upsetting process.
  • This upsetting press is said to work in stop-and-go mode, the feed path of the workpiece being adjustable by changing the piston paths of the pressure medium cylinders of the devices for gradually advancing the tool. With what measures the throughput performance of this Upsetting press can be increased without changing the drive power is not addressed in this document.
  • a slab mold is to be produced with a compression press in a stop-and-go operation, which has a tongue-like extension both at the front end and at the rear end. If the slab thus formed is then rolled out into rolled strip in the hot rolling mill, the beginning and the end of the strip should be able to be wound directly onto a coil without a cropping with a corresponding loss of material being necessary. Measures in which the throughput of a compression press can be increased as simply as possible are not contained in this document.
  • a larger through-travel path preferably covers twice the distance as (in the same time unit) in the compression angle up to 180 ° .
  • FIG. 2 a diagram for the throughput speed of a slab through the upsetting press.
  • the ordinate of the diagram shows the throughput speed8 of the slab, based on a 360 ° rotation of the stroke eccentric of the crank mechanism, from which the pressing tools are pressed laterally against the slab edge and into the slab material.
  • the slab is at the predetermined passage speed 1y on the roller table of the upsetting press transported.
  • the slab is accelerated briefly to three times the throughput speed 3 times in the time phase in which the pressing tools have no contact with the slab edge, ie in the angle of rotation of approximately 180 ° to 360 ° of the stroke eccentric of the crank mechanism with the aid of driver rollers 10 (FIG. 1) and after reaching the maximum speed, it is immediately braked again until the originally specified throughput speed 1y of the slab is reached again at the end of the 360 ° rotation angle.
  • the distance covered by the slab in the acceleration and deceleration phase is approximately twice as large in this so-called "empty phase” (2nd x) as the path (1 x) which the slab travels in the same time unit in the so-called “upsetting phase", within which the slab is compressed by the pressing tools moved by the eccentric of the crank mechanism.
  • the slab is accelerated from the given throughput speed and decelerated again to the original throughput speed in the time phase in which the pressing tools have no contact with the edge of the slab, the shrinkage decrease being reduced beforehand, an immediate increase in production can be achieved. without constructive measures having to be carried out on the upsetting press and without the performance of the main drive for the crank drive of the upsetting press or for its hydraulic feed drive having to be increased.
  • the acceleration and deceleration of the slab shown in the diagram in the so-called "empty phase" can also take on a different course, which can be optimized for the respective operating conditions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Forging (AREA)
  • Press Drives And Press Lines (AREA)

Claims (4)

  1. Procédé pour l'actionnement d'une presse à refouler pour la réduction de la larguer d'une brame chaude coulée dans une installation de coulée continue, par compression latérale de la brame entre les outils de compression de la presse à refouler, qui sont déplaçables l'un vers l'autre ou écartables l'un de l'autre par un excentrique tandis que la brame est éventuellement déplacée par la presse àrefouler sur un train de rouleaux,
       caractérisé en ce qu'on accélère la brame à partir de la vitesse de passage prédéterminée et on la freine de nouveau, pendant la phase dans laquelle les outils de compression ne sont pas en contact avec le bord de la brame, tout en réduisant au préalable le refoulement.
  2. Procédé selon la revendication 1,
       caractérisé en ce que, dans l'angle de rotation de O° à 180° de l'excentrique, la brame est déplacée à l'aide de rouleaux entraînables du train de rouleaux à la vitesse de passage prédéterminée et en ce que, dans l'angle de rotation de 180° à 360°, la brame est accélérée et de nouveau ralentie par des rouleaux entraîneurs.
  3. Procédé selon la revendication 1 ou 2,
       caractérisé en ce que, dans l'angle de rotation de 180° à 360° de l'excentrique, la brame est accélérée à une vitesse à peu près du double au quadruple de la vitesse de passage prédéterminée et est ensuite de nouveau ramenée à celle-ci.
  4. Procédé selon la revendication 1, 2 ou 3
       caractérisé en ce que, dans l'angle de rotation de 180° à 360° de l'excentrique, la brame parcourt un trajet supérieur à celui parcourru dans l'angle de rotation allant jusqu'à 180° , de préférence un trajet double.
EP92102140A 1991-03-01 1992-02-08 Procédé pour actionner une presse à refouler Expired - Lifetime EP0501211B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4106490 1991-03-01
DE4106490A DE4106490A1 (de) 1991-03-01 1991-03-01 Verfahren zum betreiben einer stauchpresse

Publications (3)

Publication Number Publication Date
EP0501211A2 EP0501211A2 (fr) 1992-09-02
EP0501211A3 EP0501211A3 (en) 1992-10-21
EP0501211B1 true EP0501211B1 (fr) 1994-06-15

Family

ID=6426199

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92102140A Expired - Lifetime EP0501211B1 (fr) 1991-03-01 1992-02-08 Procédé pour actionner une presse à refouler

Country Status (9)

Country Link
US (1) US5331833A (fr)
EP (1) EP0501211B1 (fr)
JP (1) JP3203032B2 (fr)
KR (1) KR100216419B1 (fr)
CN (1) CN1033146C (fr)
AT (1) ATE107202T1 (fr)
DE (2) DE4106490A1 (fr)
ES (1) ES2055623T3 (fr)
RU (1) RU2096114C1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4106490A1 (de) * 1991-03-01 1992-09-03 Schloemann Siemag Ag Verfahren zum betreiben einer stauchpresse
EP1473094B1 (fr) 1997-09-16 2006-11-22 Ishikawajima-Harima Heavy Industries Co., Ltd. Presse pour la réduction d'une plaque
US7137283B2 (en) 1997-09-16 2006-11-21 Ishikawajima-Harima Heavy Industries Co., Ltd. Plate reduction press apparatus and methods
JP3991127B2 (ja) 1997-09-16 2007-10-17 株式会社Ｉｈｉ 板厚圧下方法及び装置
CN107795531A (zh) * 2017-11-13 2018-03-13 邯郸钢铁集团有限责任公司 一种保持倒角板坯二次压角液压稳定的系统及其使用方法
CN111745384B (zh) * 2020-07-09 2024-12-20 威固技术（安徽）有限公司 一种带金属支架的橡胶吊耳的装配工装

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3080782A (en) * 1958-12-23 1963-03-12 American Can Co Feeding mechanism
US3263884A (en) * 1964-06-29 1966-08-02 Detroit Gasket And Mfg Company Strip processing machine
FR2316014A1 (fr) * 1974-04-11 1977-01-28 Tadeusz Sendzimir Procede et appareil pour modifier la section transversale d'une brame
US4078416A (en) * 1976-10-07 1978-03-14 The Minster Machine Company Method and apparatus for feeding strip stock into a machine
EP0112516B1 (fr) * 1982-12-01 1988-05-11 Hitachi, Ltd. Dispositif pour réduire la largeur de brame
JPS60121001A (ja) * 1983-12-02 1985-06-28 Hitachi Ltd 幅圧延装置
EP0157575B2 (fr) * 1984-03-29 1996-04-10 Kawasaki Steel Corporation Procédé de réduction en largeur de plaques par pressage et presse à cet effet
US4653311A (en) * 1986-01-31 1987-03-31 Avondale Industries, Inc. Short stroke press with automated feed mechanism
JPH0679721B2 (ja) * 1986-12-01 1994-10-12 川崎製鉄株式会社 スラブの幅圧下方法
DE3837643A1 (de) * 1988-11-05 1990-05-10 Schloemann Siemag Ag Stauchpresse zur schrittweisen querschnittsaenderung von strangfoermigen metallkoerpern, bspw. brammen
JP2593534B2 (ja) * 1988-11-11 1997-03-26 株式会社日立製作所 熱間圧延設備
DE3900668C2 (de) * 1989-01-09 2001-01-11 Mannesmann Ag Presse zum seitlichen Stauchen von Werkstücken, insbesondere Brammenstauchpresse
DE3917398A1 (de) * 1989-05-29 1990-12-06 Schloemann Siemag Ag Fliegende stauchpresse
DE4106490A1 (de) * 1991-03-01 1992-09-03 Schloemann Siemag Ag Verfahren zum betreiben einer stauchpresse

Also Published As

Publication number Publication date
CN1033146C (zh) 1996-10-30
EP0501211A2 (fr) 1992-09-02
CN1064424A (zh) 1992-09-16
JPH0663612A (ja) 1994-03-08
JP3203032B2 (ja) 2001-08-27
US5331833A (en) 1994-07-26
KR920017745A (ko) 1992-10-21
RU2096114C1 (ru) 1997-11-20
DE4106490A1 (de) 1992-09-03
EP0501211A3 (en) 1992-10-21
DE59200233D1 (de) 1994-07-21
KR100216419B1 (ko) 1999-08-16
ES2055623T3 (es) 1994-08-16
ATE107202T1 (de) 1994-07-15

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