EP0492227A1 - Dispositif de refroidissement des outils de matriçage d'une presse à refouler et procédé pour son fonctionnement - Google Patents

Dispositif de refroidissement des outils de matriçage d'une presse à refouler et procédé pour son fonctionnement Download PDF

Info

Publication number
EP0492227A1
EP0492227A1 EP91121014A EP91121014A EP0492227A1 EP 0492227 A1 EP0492227 A1 EP 0492227A1 EP 91121014 A EP91121014 A EP 91121014A EP 91121014 A EP91121014 A EP 91121014A EP 0492227 A1 EP0492227 A1 EP 0492227A1
Authority
EP
European Patent Office
Prior art keywords
pressing
cooling
slab
pressing tool
tool
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
EP91121014A
Other languages
German (de)
English (en)
Other versions
EP0492227B1 (fr
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 EP0492227A1 publication Critical patent/EP0492227A1/fr
Application granted granted Critical
Publication of EP0492227B1 publication Critical patent/EP0492227B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/04—Shaping in the rough solely by forging or pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0035—Forging or pressing devices as units
    • B21B15/005—Lubricating, cooling or heating means

Definitions

  • the invention relates to a device for cooling the pressing tools of an upsetting press for reducing the width of rolling stock, in particular the width of slabs in hot wide strip roughing mills with tool carriers arranged on both sides of the slab edge, receiving the mutually facing pressing tools and moving against one another, and a method for operating the cooling device.
  • the pressing tools of an upsetting press to reduce the width of slabs in hot wide strip roughing mills are exposed to extremely high mechanical and thermal loads. Since the temperature of the hot slab entering the upsetting press is approximately 1250 o C and the pressing tool is exposed to direct thermal contact with the slab during the pressing and otherwise to the radiant heat emanating from the hot slab, the pressing tool must be cooled so that operationally acceptable tool life can be achieved will.
  • the present invention is based on the finding that the heat flow from the front edge of the pressing tool, which comes into contact with the hot slab, to the material areas of the pressing tool, where the coolant channels are embedded for reasons of strength, takes place too slowly, and therefore because of an internal circulation of one Not enough heat can be removed from the cooling medium by the pressing tool, with the result that after a certain operating time the tool temperature settles far above the maximum permissible temperatures.
  • a relocation of the coolant channels in the tool at a short distance from the pressing surfaces to be cooled has the consequence that the pressing surfaces of the pressing tool can only be reworked to a limited extent and its operating times are therefore reduced to an economically unacceptable extent.
  • the object of the invention is to design a device for cooling the pressing tools of an upsetting press, with which the pressing tool is reliably and sustainably cooled down to such maximum permissible material temperatures at which conventional temperature change-resistant materials can be used, which require multiple reworking of the highly stressed pressing surfaces of the tool allow. Inexpensive materials should also be able to be used for the pressing tool; at the same time, the service life of these tools should be increased.
  • the upsetting press has at least one coolant nozzle directed against the regions of the front edge of each pressing tool, with the aid of this coolant nozzle in a particularly expedient continuation of the invention, the area of the leading edge of each pressing tool from the outside is spray-cooled continuously with the cooling medium.
  • an almost steady temperature curve occurs after a short operating time, which remains significantly below the permissible material temperature in the area of the press surface and decreases further towards the inside of the tool.
  • a flat jet nozzle with a predetermined scattering angle has proven to be a particularly advantageous coolant nozzle, as a result of which the cooling medium can be applied uniformly to the entire front edge of the pressing tool.
  • An advantageous development of the invention provides that several flat jet nozzles are combined to form a nozzle bar which is arranged above and below the middle of the slab, advantageously between two pressure rollers holding the slab down; This makes it easier to supply and distribute the cooling medium while using the tightest of spaces. If after one Another embodiment of the invention of the nozzle bar as a structural unit can be connected to at least one coolant supply line by means of a quick-connect connection, this considerably streamlines the maintenance of the nozzles. Damage to individual nozzles can be remedied at a separate maintenance station, since the damaged nozzle bar can be exchanged for a new or repaired nozzle bar.
  • a continuation of the invention is that the axes of the flat jet nozzles are aligned with the slab width and the distance of the pressing tool from the slab center at different angles against the front edge of the pressing tool, and that each individual nozzle is designed to be switched off or on.
  • the flat jet nozzles can be fixed in the nozzle bar, so that individual nozzles are assigned to certain working positions of the pressing tools in the upsetting press and are then switched off when the pressing tools are moved to a new working position, e.g. B. due to changed slab width - be set; new, assigned nozzles are then switched on in accordance with the new working position of the pressing tools. Overall, the adaptation of the nozzles to the various working positions of the pressing tools is thereby considerably simplified.
  • the nozzle bar is equipped in sections with several rows of nozzles, each row of nozzles is connected to a separate coolant line, and each row of nozzles is designed to be switched off or on.
  • the assignment of individual rows of nozzles to different working positions of the pressing tools increases and evenens the effect of the spray cooling of these flat jet nozzles.
  • the ability to switch off or connect entire rows of nozzles in the nozzle bar also allows the area of the front edge of each pressing tool to be acted upon from the outside and past the slab with a cooling medium in the form of spray cooling during the movement phase that is lifted from the slab edge.
  • the control of the nozzle valves is expediently coupled to the control of the pressing tools.
  • the coolant is largely kept away from the slab, in particular the edge of the slab, so that the deformation energy introduced into the slab by the pressing tools is sufficient to compensate for the heat loss of the slab by heat radiation.
  • a further embodiment of the invention provides that in addition to the spray cooling of the pressing tool applied from the outside, this pressing tool is cooled internally. In this case, the coolant channels in the pressing tool can be moved back from the front edge of the tool to such an extent that multiple reworking of the pressing surfaces of the pressing tool is ensured.
  • FIG. 1 shows an upsetting press 1 with a press frame, consisting of two upper and two lower uprights 2, 3 and two crossbars 4, 5 connecting the uprights, the lower uprights 3 resting on a foundation 6.
  • the upsetting press also has two crankcases 7, in which an eccentric drive (not shown in more detail) for the translational movement of the tool carrier 8 and the pressing tool 9 are arranged.
  • the slab 10 to be compressed is located between the pressing tools 9 of the upsetting press 1.
  • the slab 10 is moved through the upsetting press on a roller table (not shown in more detail).
  • two hold-down rollers 11 In the area of the pressing tools 9, two hold-down rollers 11 (FIG. 2) are arranged above and below the slab.
  • the eccentric drive for tool carrier 8 and pressing tool 9 located in the crankcase 7 is driven by an articulated shaft 12 which is connected to a drive motor 14 via a gear 13.
  • the position of the crankcase 7 in the press frame and thus the position of the pressing tools in relation to the width of the slab is adjusted with the aid of the adjusting device 15.
  • the drive devices of the upsetting press namely drive motor 14, gear 13, cardan shaft 11 and eccentric drive in the crankcase 7, the tool carrier 8 and the pressing tool 9 are moved in the direction of arrow 16 against the edges of the slab in the horizontal direction, whereby the slab by prescribed dimensions in the width is reduced. Since the slab temperature is around 1250 o C and the pressing tool acts on the slab edge during the pressing period, it is subjected to high mechanical and thermal stress.
  • the upsetting press with a plurality of coolant nozzle 18 directed against the regions of the front edge 17 of each pressing tool 9.
  • the coolant nozzles 18 are designed as flat jet nozzles with a predetermined scattering angle 19 and a plurality of flat jet nozzles 18, 18 ', 18'',18''' are combined to form a nozzle bar 20 which is arranged above and below the slab center 21.
  • FIG. 1 A special compression position for a slab is shown in FIG. 1, the axes of the flat jet nozzles 18 being directed above and below the slab 10 against the front edge 17 of the tool. If, in some cases, wider or narrower slabs are to be pressed in a reducing manner, the flat jet nozzles 18 in the nozzle bar 20 are switched off and, for example, the flat jet nozzles 18 ', the axes of which are now aligned with the new slab width, are switched on.
  • the nozzles of the nozzle bar are supplied from a container 22 with cooling medium, preferably water, which is supplied by means of a pump 23.
  • the connection and disconnection of the flat jet nozzles in the nozzle bar is carried out with the aid of switchable valves 24 which are arranged in the individual supply line 25 assigned to the respective flat jet nozzle.
  • FIG. 2 shows the arrangement of the nozzle bar 20 above and below the slab 10 between the hold-down rollers 11.
  • the nozzle bar 20 can be seen as a unit with flat jet nozzles integrated in this unit, the nozzle bar being connected to the water supply lines 25 by means of quick-connect connections 26.
  • FIG. 3 and FIG. 4 show the nozzle bar 20 and the flat jet nozzles 18 arranged in the nozzle bar, according to which the nozzle bar is equipped in sections with several nozzle rows 18, 18 ', 18'',18''' and each row of nozzles has a separate connection bore 27, 27 '. , 27 '', 27 '''is connected.
  • each row of nozzles can be switched off or on individually.
  • the row of nozzles 18 is connected, for example, to the connection bores 27, in the nozzle bar and to the connection head 28 and the associated connection line (FIG. 4).
  • the row of nozzles 18 ''' is then connected to the connection bore 27''' and to the connection head 28 '''and the associated connection line.
  • the connecting lines 28 and 28 ''' can each be quickly coupled or uncoupled to the water supply line 25 via a flange 29, so that the nozzle bar 20 as a structural unit can be quickly replaced by a new nozzle bar.
  • the scattering angle 19 specified for each flat jet nozzle is indicated schematically, as are the axes 30 o of the flat jet nozzles aligned at different angles 1 or 2, which are fixed according to the slab width and the distance of the pressing tool from the slab center.
  • the best cooling of the pressing tools can be brought about if the area of the front edge of each pressing tool is continuously spray-cooled from the outside with the cooling medium, preferably water. After a short operating time, a thermal steady state has set in, so that the temperature of the front edge of the press tool remains below the maximum permissible material temperature. The temperature drops further inside the tool.
  • a slightly better cooling effect for the press tool can be achieved if in addition to that Spray cooling applied from the outside internally cools the press tool, for example, by means of coolant channels (not shown in detail) which are additionally arranged in the press tool at a distance from its front edge 17 and are connected to a coolant supply.
  • coolant channels not shown in detail
  • At least one coolant nozzle is arranged in a guide which can be pivoted into the region of the front edge of the press tool, or if the coolant jet tracks the movement of the front edge of the press tool in a different manner

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Metal Rolling (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Press Drives And Press Lines (AREA)
EP91121014A 1990-12-24 1991-12-07 Dispositif de refroidissement des outils de matriçage d'une presse à refouler et procédé pour son fonctionnement Expired - Lifetime EP0492227B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4041787 1990-12-24
DE4041787A DE4041787A1 (de) 1990-12-24 1990-12-24 Einrichtung zum kuehlen der presswerkzeuge einer stauchpresse und verfahren zum betreiben der einrichtung

Publications (2)

Publication Number Publication Date
EP0492227A1 true EP0492227A1 (fr) 1992-07-01
EP0492227B1 EP0492227B1 (fr) 1994-11-09

Family

ID=6421448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91121014A Expired - Lifetime EP0492227B1 (fr) 1990-12-24 1991-12-07 Dispositif de refroidissement des outils de matriçage d'une presse à refouler et procédé pour son fonctionnement

Country Status (9)

Country Link
US (1) US5349842A (fr)
EP (1) EP0492227B1 (fr)
KR (1) KR100197640B1 (fr)
CN (1) CN1034558C (fr)
AT (1) ATE113874T1 (fr)
DE (2) DE4041787A1 (fr)
ID (1) ID813B (fr)
RU (1) RU2018407C1 (fr)
TW (1) TW206169B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2833871B1 (fr) * 2001-12-20 2004-07-09 Usinor Procede et installation de fabrication de bandes metalliques a partir de bandes coulees directement a partir de metal liquide
CN113198968B (zh) * 2021-06-01 2022-05-24 河北国智机械设备制造有限公司 一种用于螺母冷镦加工的冷却油喷洒装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB858726A (en) * 1957-09-14 1961-01-11 Ges Fertigungstechnik & Maschb Improvements in and relating to machines for hot-forming bar stock
GB2040756A (en) * 1979-02-26 1980-09-03 Hatebur Umformmaschinen Ag Cross transport press
JPS6133730A (ja) * 1984-07-26 1986-02-17 Hitachi Ltd プレス工具の冷却方法及び装置
JPS635837A (ja) * 1986-06-25 1988-01-11 Kawasaki Steel Corp 熱間スラブの幅圧下プレス金型の冷却方法
JPS63132740A (ja) * 1986-11-25 1988-06-04 Kawasaki Steel Corp 金型の冷却方法
JPS63273536A (ja) * 1987-04-30 1988-11-10 Ishikawajima Harima Heavy Ind Co Ltd 幅圧下プレスの金型
JPH02192805A (ja) * 1989-01-18 1990-07-30 Sumitomo Metal Ind Ltd 熱間スラブの幅サイジング用金型
JPH03118907A (ja) * 1989-09-29 1991-05-21 Sumitomo Metal Ind Ltd 熱間スラブの幅サイジング用金型の冷却方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3116752A1 (de) * 1981-04-28 1982-11-04 Eumuco Aktiengesellschaft für Maschinenbau, 5090 Leverkusen Hubbalkenmanipulator fuer gesenkschmiedepressen u.dgl.
US4474044A (en) * 1982-09-02 1984-10-02 Mcdonnell Douglas Corporation Apparatus and process for superplastically forming metals
JP2593534B2 (ja) * 1988-11-11 1997-03-26 株式会社日立製作所 熱間圧延設備

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB858726A (en) * 1957-09-14 1961-01-11 Ges Fertigungstechnik & Maschb Improvements in and relating to machines for hot-forming bar stock
GB2040756A (en) * 1979-02-26 1980-09-03 Hatebur Umformmaschinen Ag Cross transport press
JPS6133730A (ja) * 1984-07-26 1986-02-17 Hitachi Ltd プレス工具の冷却方法及び装置
JPS635837A (ja) * 1986-06-25 1988-01-11 Kawasaki Steel Corp 熱間スラブの幅圧下プレス金型の冷却方法
JPS63132740A (ja) * 1986-11-25 1988-06-04 Kawasaki Steel Corp 金型の冷却方法
JPS63273536A (ja) * 1987-04-30 1988-11-10 Ishikawajima Harima Heavy Ind Co Ltd 幅圧下プレスの金型
JPH02192805A (ja) * 1989-01-18 1990-07-30 Sumitomo Metal Ind Ltd 熱間スラブの幅サイジング用金型
JPH03118907A (ja) * 1989-09-29 1991-05-21 Sumitomo Metal Ind Ltd 熱間スラブの幅サイジング用金型の冷却方法

Also Published As

Publication number Publication date
DE4041787A1 (de) 1992-06-25
EP0492227B1 (fr) 1994-11-09
DE59103501D1 (de) 1994-12-15
CN1062859A (zh) 1992-07-22
CN1034558C (zh) 1997-04-16
KR100197640B1 (ko) 1999-06-15
KR920011597A (ko) 1992-07-24
ID813B (id) 1996-07-17
ATE113874T1 (de) 1994-11-15
US5349842A (en) 1994-09-27
RU2018407C1 (ru) 1994-08-30
TW206169B (fr) 1993-05-21

Similar Documents

Publication Publication Date Title
EP1900449B1 (fr) Poutre de pulvérisation d'une installation de décalaminage hydraulique et procédé de fonctionnement d'une telle poutre de pulvérisation
DE19649073A1 (de) Vorrichtung zur Abkühlung von Strangpreßprofilen
DE2729187A1 (de) Kuehlvorrichtung fuer grobblech und feinblech
EP1492634B1 (fr) Dispositif de refroidissement de produits a laminer dans la voie de refroidissement d'un laminoir
EP0389914B1 (fr) Poutre d'application de pression pour une ponceuse
DE3120321C2 (de) Verfahren und Vorrichtung zum Entgraten und Putzen von gußeisernen Rohrmuffen
DE4025389C2 (de) Gekühlte Förder- bzw. Niederhaltevorrichtung für eine Stauchpresse zur Breitenreduktion von Walzgut
EP0492227B1 (fr) Dispositif de refroidissement des outils de matriçage d'une presse à refouler et procédé pour son fonctionnement
DE2424005C3 (de) Verfahren zum Entfernen eines Doms aus einem Walzwerk sowie Vorrichtung zur Durchführung dieses Verfahrens
DE2505324C2 (de) Vorrichtung an einem Walzgerüst zum Versprühen eines flüssigen Kühl- und/oder Schmiermittels
DE2208357A1 (de) Einstellbare Treibrollenvorrichtung für Stranggußkörper
DE4026827C2 (de) Befestigungsvorrichtung zur lösbaren Verbindung von Werkzeug und Werkzeugträger einer Stauchpresse
EP1186362A1 (fr) Dispositif de laminage et profilage de pièces annulaires ou en forme de disque
DE1914051A1 (de) Kantenwalzgeruest fuer Stahlbrammen od.dgl.
EP0349840A2 (fr) Laminoir pour la production des matières à laminer
DE2432765B2 (de) Anlage zum kuehlen von gussteilen
DE840537C (de) Hydraulische Hochdruckentzunderung
DE1508952A1 (de) Direktes und kontinuierliches Herstellungsverfahren fuer metallurgische Erzeugnisse
DE60111993T2 (de) Vorrichtung und Verfahren zum Kühlen von Walzringen
DE19960593C2 (de) Vorrichtung zum Kühlen eines metallischen Gussstrangs
DE19905833C2 (de) Vorrichtung zum Einbringen von Schmierstoff in den Walzspalt eines Warm-Walzwerks
DE10239149B4 (de) Vorrichtung zur Herstellung einer geradlinigen Rille in einem Werkstück aus Metall, insbesondere Stahl, und Verwendung der Vorrichtung
DE3414326A1 (de) Auswechselbare, verschleiss- und druckfeste lagerplatten im verbindungsbereich von foerdereranbauten
DE3907730A1 (de) Verfahren und vorrichtung zum schleifen der arbeitswalzen eines planetenwalzwerkes
DE2913440B1 (de) Vorrichtung an Stranggiessanlage zum Vorschub des Gussstranges

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19911230

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE ES FR GB GR IT NL SE

17Q First examination report despatched

Effective date: 19930729

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE ES FR GB GR IT NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19941109

Ref country code: GB

Effective date: 19941109

Ref country code: NL

Effective date: 19941109

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19941109

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19941109

REF Corresponds to:

Ref document number: 113874

Country of ref document: AT

Date of ref document: 19941115

Kind code of ref document: T

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19941207

REF Corresponds to:

Ref document number: 59103501

Country of ref document: DE

Date of ref document: 19941215

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19950209

ET Fr: translation filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19941109

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19980220

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981231

BERE Be: lapsed

Owner name: SCHLOEMANN-SIEMAG A.G. SMS

Effective date: 19981231

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20011211

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030901

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20110510

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59103501

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59103501

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20111208