EP0946314B1 - Four de dosage - Google Patents

Four de dosage Download PDF

Info

Publication number
EP0946314B1
EP0946314B1 EP97951076A EP97951076A EP0946314B1 EP 0946314 B1 EP0946314 B1 EP 0946314B1 EP 97951076 A EP97951076 A EP 97951076A EP 97951076 A EP97951076 A EP 97951076A EP 0946314 B1 EP0946314 B1 EP 0946314B1
Authority
EP
European Patent Office
Prior art keywords
probe
pressure
liquid metal
vessel
level
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
EP97951076A
Other languages
German (de)
English (en)
Other versions
EP0946314A1 (fr
Inventor
Klaus Malpohl
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.)
Strikowestofen GmbH
Original Assignee
Strikowestofen 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 Strikowestofen GmbH filed Critical Strikowestofen GmbH
Publication of EP0946314A1 publication Critical patent/EP0946314A1/fr
Application granted granted Critical
Publication of EP0946314B1 publication Critical patent/EP0946314B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D39/00—Equipment for supplying molten metal in rations
    • B22D39/06—Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by controlling the pressure above the molten metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
    • B22D2/003—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass for the level of the molten metal

Definitions

  • the invention relates to a dosing furnace with a Vessel for holding liquid metal and a device for detecting a level of liquid metal in a vessel.
  • Adjustment aids which have a reproducible scanning enable.
  • the needle should be accurate for a well reproducible dosage the outlet position of the liquid metal at the outlet edge of the dosing tube (needle and outlet edge must sit at the same height).
  • the capture is in practice not only by the above Maintenance and repair work on the Metal needle shifted but also through the exchange of the metering tube, the installation height of which directly Position of the outlet edge determined. Due large manufacturing tolerances in the refractory sector can the installation of a new dosing tube as well a new seal, etc. the outlet edge by up to Move 10 mm vertically.
  • the scanning position is shifted in relation to the outlet edge by the above Measures of, for example, 5 mm a change of the dosed metal weight of typically 4%. A dosing accuracy of 1 to 2% is required. Due to poor access and the heat that prevails in the scanning area, in practice Do not readjust the needle, but it will Pressure or time parameters of the dosage or with us the dosage weight, which is known according to the integral method (Pressure over time) is determined, changed, to compensate for the falsification of the dosing weight. This has the disadvantage that founders who die Dosing parameters of different castings saved have corrections to these saved again and again Must make values since the sampling ratios and so that the dosage does not remain constant.
  • DE-OS 44 20 712 is also a sensor arrangement to measure the level of liquid metal known in which the sensor made of electrically conductive There is ceramic and in the wall of the vessel or one Riser pipe is inserted flush.
  • JP-A-05099726 considered. This reveals one in the wall a tundish filled with molten metal, open to the inside of the tundish Pipe with the pipe opening below the top edge the molten metal is arranged. From the Gas is blown into the melt into the tube. The through the metal melt generated back pressure (by which the level of the molten metal can be concluded can) in the tube with a pressure measuring device detected.
  • the invention has for its object a metering oven with a vessel for holding liquid metal and a device for detecting a level to create liquid metal in a vessel, being the device has a predetermined high level Accuracy recorded.
  • the pressure measuring device as a pressure wave switch to capture a when closing the Probe opening occurring through liquid metal Pressure response wave within the probe and delivery of a corresponding signal is executed and the Probe into the wall of one provided in the vessel Riser is fixed, becomes a simple one Device for detecting the level of liquid Metal is provided that is inexpensive and still with certainty a certain one Level detected.
  • the tube or the probe can be in the Wall or the riser pipe of a dosing furnace firmly inserted be, when passing the liquid level the desired signal is given on the riser becomes.
  • the probe is made of ceramic, this leads to the possibility of metal deposits on the probe is minimized (especially with the Material combination ceramic / aluminum). Should nevertheless thin deposits (e.g. due to the roughness of the probe), this leads to the invention Probe does not lead to a functional impairment, while with measuring systems based on electrical Contacting based, already thin deposits can cause a complete failure.
  • Ceramic Probe with an inner diameter of less than 2 mm to provide. Because of the surface tensions that arise, of liquid aluminum on the Ceramic, the probe then remains (even if there is no Gas flow) not through liquid aluminum locked.
  • the pressure measuring device one in the pressure sensitivity adjustable pressure wave switch for Measurement of a pressure response wave from the probe escaping gas.
  • the pressure response wave when the probe reaches (or closes) through a mirror of liquid metal is created Example as a signal to close a feed valve used in the dosing furnace.
  • the adjustability of the Pressure wave switch enables easy, too possible adjustment to the conditions during operation of the respective installation location.
  • the Dosing furnace several devices for detecting a Level of liquid metal, each containing one Have a probe with an outlet opening. Lie these outlet openings (with respect to a resting one Level of the liquid metal) side by side, so is in the case of a moving surface of the liquid Metal level by appropriate averaging the pressures measured in the probes, are these outlet openings one above the other, is level determination possible within wide limits.
  • a dosing furnace 1 with a vessel 12, in the liquid metal, for example aluminum, in a bath 2 is added.
  • a riser pipe 3 is used, which through the wall 4th of the dosing furnace 1 is led to the outside.
  • liquid metal is metered out.
  • This can (according to a sensor device) through regulated pressurization inside the Vessel 12 is made to liquid metal through the To drive riser pipe 3 into a discharge pipe 13.
  • the drain pipe 13 fills the molten metal, preferably Aluminum, for example in molds intended for this purpose. It is important that the amount of the vessel 12 expelled molten metal on the Volume of the molds is matched. For dosing it is necessary that the height of the metal column in the dosing furnace (or in the riser 3) exactly is detected, with a pneumatic for this detection Sensor device 6 is used.
  • the pneumatic sensor device has a Tube-trained probe 5, which is preferably made of Ceramic exists, and that according to FIG. 2 in the wall 7 of the riser pipe 3 is used.
  • a Tube-trained probe 5 which is preferably made of Ceramic exists, and that according to FIG. 2 in the wall 7 of the riser pipe 3 is used.
  • This is for example in the wall 7 designed as a stepped bore Bore 8 provided, being in the bore part with a larger diameter the end of the probe 5 from pressed into the riser wall 7 and / or glued on the outside and the smaller diameter of the Stepped bore 8 approximately the inner diameter of the Tube 5 corresponds.
  • the probe 5 is via a pressure measuring device 9 connected to a gas source 10.
  • the gas source supplies gas at a certain pressure to the probe 5, which from its front end and through the hole 8 flows out.
  • Pressure curve when approaching or increasing the Level is measured and there is a pressure threshold determined at which the level a predetermined assignment to the end of the probe 5.
  • the pressure measuring device 9 then indicates a corresponding signal its output 11 to the further evaluation control / regulating devices.
  • the adjustment of the pressure sensitivity is easy by adjusting the distance of the fixed Contact to the membrane with the help of a screw, which is provided with a scale. Depending on the position the screw is the fixed contact more or less far from the membrane contact, so that more or less pressure is applied to bring both contacts into contact.
  • Probe 5 Since it, for example during a metering process from the Vessel 12 or riser pipe 3 and the discharge pipe 13 in a mold to close the bore 8 or Probe 5 can provide protection against clogging to provide these openings. This is first by a back pressure caused by the gas source given, which ensures when the bore 8 is closed, that the probe does not fill with molten metal. Moreover can with a suitable choice of materials Probe or the surrounding or enclosing components (Riser pipe, a section of the wall of the vessel) the accumulation of molten metal largely prevented become.
  • Inner diameter of the probe 5 or as a connection hole 8 holes of less than 2 mm and a suitable material combination (ceramics for the parts of the metal which come into contact with the molten metal Probe 5 and the connection hole 8 containing Component, in this case the riser 3) is a Closure made difficult by molten metal. by virtue of that occurs with certain material pairings Surface tensions, for example between the ceramics and liquid aluminum, here is a closure even excluded. This is for the present Invention of vital importance, especially at On the basis of the fact that, for example in the form of casting, even the smallest voids are filled with molten metal become.
  • In another embodiment of the present Invention can use multiple detection devices of a level of liquid metal in one Dosing furnace can be provided. Any of these devices each has its own probe with an outlet opening on. Are these outlet openings (regarding a resting level of the liquid metal) side by side, so in the case of a moving one Surface of the liquid metal (e.g. during a filling process in the dosing furnace) the level by suitable Averaging can be recorded. So that are possible Incorrect measurements due to a moving metal level largely excluded. However, it is also possible, the above-mentioned outlet openings one above the other to be arranged so as to determine the level within wide limits.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Noodles (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Commercial Cooking Devices (AREA)
  • Peptides Or Proteins (AREA)
  • Vending Machines For Individual Products (AREA)
  • Medicines Containing Plant Substances (AREA)

Claims (7)

  1. Four doseur (1) comprenant une cuve (12) pour recevoir un métal liquide et un dispositif pour repérer un niveau de métal liquide dans une cuve, dans lequel une sonde (5) réalisée sous la forme d'un tube est reliée à une source de gaz (10) pour faire circuler un gaz depuis la source de gaz au travers de la sonde et depuis son orifice d'évacuation, et un dispositif de mesure de la pression (9) pour repérer un état de la pression à l'intérieur de la sonde (5) en fonction d'une contre-pression générée par un niveau du métal liquide, caractérisé en ce que
       le dispositif de mesure de la pression (9) est conçu comme un commutateur à ondes de pression pour repérer à l'intérieur de la sonde (5) une onde de pression réponse, apparaissant lors de l'obturation de l'orifice de la sonde par le métal liquide, et émettre un signal correspondant, et en ce que la sonde (5) est disposée de manière fixe dans la paroi d'un plongeur incorporé (3) prévu dans la cuve (12).
  2. Four doseur selon la revendication 1, caractérisé en ce que la sonde et/ou le plongeur incorporé (3) sont réalisés en céramique ou essentiellement en céramique.
  3. Four doseur selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que la sonde (5) est comprimée et/ou collée dans un alésage (8).
  4. Four doseur selon la revendication 2 et/ou la revendication 3, caractérisé en ce que l'orifice d'évacuation de la sonde (5) et/ou l'alésage (8) présentent un diamètre intérieur inférieur à 5 mm, de préférence inférieur à 2 mm.
  5. Four doseur selon l'une quelconque des revendications précédentes, caractérisé en ce que le commutateur à ondes de pression est réglable quant à sa sensibilité aux ondes de pression.
  6. Four doseur selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un premier et un deuxième dispositifs sont prévus pour repérer un niveau de métal liquide, qui présentent une première sonde et une deuxième sondes avec un premier et un deuxième orifices d'évacuation.
  7. Four doseur selon la revendication 6, caractérisé en ce que le premier orifice d'évacuation concernant un niveau constant de métal liquide se trouve au-dessus ou à côté du deuxième orifice d'évacuation.
EP97951076A 1996-11-11 1997-11-10 Four de dosage Expired - Lifetime EP0946314B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19647713A DE19647713C2 (de) 1996-11-11 1996-11-11 Vorrichtung zur Erfassung eines Pegels von flüssigem Metall
DE19647713 1996-11-11
PCT/DE1997/002663 WO1998020996A1 (fr) 1996-11-11 1997-11-10 Four de dosage

Publications (2)

Publication Number Publication Date
EP0946314A1 EP0946314A1 (fr) 1999-10-06
EP0946314B1 true EP0946314B1 (fr) 2003-06-25

Family

ID=7812052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97951076A Expired - Lifetime EP0946314B1 (fr) 1996-11-11 1997-11-10 Four de dosage

Country Status (9)

Country Link
US (1) US6303073B1 (fr)
EP (1) EP0946314B1 (fr)
JP (1) JP4327908B2 (fr)
AT (1) ATE243580T1 (fr)
BR (1) BR9713002A (fr)
CA (1) CA2271207C (fr)
DE (2) DE19647713C2 (fr)
ES (1) ES2201336T3 (fr)
WO (1) WO1998020996A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2283950A1 (fr) 2009-08-12 2011-02-16 Strikowestofen Gmbh Procédé et dispositif de dosage de métal fondu
EP3189913A1 (fr) 2016-01-08 2017-07-12 StrikoWestofen GmbH Dispositif et procede de dosage de matiere fondue

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3311937A1 (fr) * 2016-10-21 2018-04-25 StrikoWestofen GmbH Configuration de colonne montante pour la détection du niveau d'un métal en fusion
CN109959421B (zh) * 2017-12-25 2023-04-07 博世热力技术（上海）有限公司 水位检测装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD135097B1 (de) * 1978-03-27 1980-08-27 Lothar Schlaupitz Vorrichtung zur ueberwachung und steuerung des fuellstandes in fluessigkeitsbehaeltern
GB1585151A (en) * 1978-05-31 1981-02-25 Westofen Gmbh Ovens
JPH01245120A (ja) * 1988-02-09 1989-09-29 Westofen Gmbh 流動可能な媒体を計量する方法及び装置
JPH0599726A (ja) * 1991-05-30 1993-04-23 Kawasaki Steel Corp タンデイツシユ溶湯面レベル検知方法
JPH06587A (ja) * 1992-06-23 1994-01-11 Nippon Steel Corp 複層鋳片の連続鋳造における溶融金属の境界層レベル測定方法および境界層レベル制御方法
DE4318252A1 (de) * 1993-06-02 1994-12-08 Friedhelm Prof Dr Ing Kahn Verfahren und Vorrichtung zum Giessen von Bauteilen
DE4420712C2 (de) * 1994-06-14 1998-07-16 Strikfeldt & Koch Vorrichtung zum Erfassen eines Pegels von flüssigem Metall

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2283950A1 (fr) 2009-08-12 2011-02-16 Strikowestofen Gmbh Procédé et dispositif de dosage de métal fondu
DE102009037368A1 (de) 2009-08-12 2011-02-17 Strikowestofen Gmbh Verfahren und Vorrichtung zum Dosieren von geschmolzenem Metall
EP3189913A1 (fr) 2016-01-08 2017-07-12 StrikoWestofen GmbH Dispositif et procede de dosage de matiere fondue
WO2017118722A1 (fr) 2016-01-08 2017-07-13 Strikowestofen Gmbh Dispositif et procédé de dosage de matière en fusion

Also Published As

Publication number Publication date
CA2271207C (fr) 2006-09-12
US6303073B1 (en) 2001-10-16
DE19647713C2 (de) 2000-01-05
DE59710352D1 (de) 2003-07-31
BR9713002A (pt) 2000-01-25
EP0946314A1 (fr) 1999-10-06
AU5476098A (en) 1998-06-03
ATE243580T1 (de) 2003-07-15
ES2201336T3 (es) 2004-03-16
AU733931B2 (en) 2001-05-31
JP4327908B2 (ja) 2009-09-09
JP2001504218A (ja) 2001-03-27
WO1998020996A1 (fr) 1998-05-22
CA2271207A1 (fr) 1998-05-22
DE19647713A1 (de) 1998-05-14

Similar Documents

Publication Publication Date Title
EP1832362B1 (fr) Installation de coulée sous pression à vide et procédé de de mise en oeuvre
DE2433060C2 (de) Verfahren zum Vergießen vorbestimmter Mengen schmelzflüssigen Metalls und Einrichtung zur Durchführung ' dieses Verfahrens
DE3416127A1 (de) Vorrichtung und verfahren zur einstellung volumetrischer hohlraeume zum gravimetrischen dosieren von fluessigkeiten
EP0946314B1 (fr) Four de dosage
DE102009014311A1 (de) Verfahren zur Überwachung und/oder Steuerung und/oder Regelung von Funktionen von und bei Spritzgiessmaschinen
EP1881316A2 (fr) Méthode et dispositif pour déterminer la densité d'un fluide
DE4402463C2 (de) Vorrichtung zur diskontinuierlichen Erfassung der Dicke einer Schicht auf einer Metallschmelze
DE102012019743B3 (de) Niederschlagssensor
EP0150670A2 (fr) Procédé et appareillage pour la détection et le réglage du niveau d'une coulée de métal
EP2018540A1 (fr) Sonde d'immersion pour dispositifs lips
DE2500161A1 (de) Elektrodeneinrichtung fuer ein geraet zur pruefung der unverletztheit einer durchgangslochplattierung bei schaltungsplatten
DE2634971A1 (de) Einrichtung zur kontinuierlichen bestimmung des kohlendioxidgehaltes einer durch eine leitung stroemenden fluessigkeit, insbesondere eines getraenkes
DE19751377C2 (de) Prüfvorrichtung
DE102018105900B4 (de) Wellenlötmaschine und Verfahren zur Bestimmung der Höhe der Lötwelle
EP1942344B1 (fr) Procédé destiné à l'examen du comportement d'un matériau dans un matériau de construction
DE9216922U1 (de) Wasserarmatur, insbesondere Wassermischarmatur
DE3025982A1 (de) Autoklav
DE3146360C2 (de) Vorrichtung zur Badspiegel-Höhenregelung in einer Stranggießkokille
DE19622291C1 (de) Verfahren und Vorrichtung zur Überfüllüberwachung
EP1602901B1 (fr) Procédé et dispositif pour la mesure de niveau de liquide dans un récipient contenant métal en fusion
DE3541445A1 (de) Stranggiesskokille mit temperaturmesseinrichtungen
DE1598471C3 (de) Verfahren und Vorrichtung zur Herstellung einer Probe bestimmter Gestalt und Dichte eines fein zerteilten Materials
DE102022214165B3 (de) Kaffeezubereitungseinrichtung und Verfahren zur Ermittlung einer Verpresskraft und eines Brühdrucks mit einer solchen Kaffeezubereitungseinrichtung
EP0009500A1 (fr) Dispositif de mesure de coquilles pour des installations metallurgiques notamment pour le traitement de l'acier
EP3810394A1 (fr) Procédé pour la détermination en ligne de la rhéologie d'un matériau thermoplastique et/ou élastomère destiné à la fabrication de pièces moulées par injection

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: 19990505

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE ES FR GB IT LI NL

17Q First examination report despatched

Effective date: 20000706

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: STRIKOWESTOFEN GMBH

AK Designated contracting states

Designated state(s): AT CH DE ES FR GB IT LI NL

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 59710352

Country of ref document: DE

Date of ref document: 20030731

Kind code of ref document: P

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: TROESCH SCHEIDEGGER WERNER AG

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2201336

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
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

Effective date: 20040326

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

Ref country code: GB

Payment date: 20071127

Year of fee payment: 11

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

Ref country code: NL

Payment date: 20081113

Year of fee payment: 12

Ref country code: CH

Payment date: 20081114

Year of fee payment: 12

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

Ref country code: AT

Payment date: 20081114

Year of fee payment: 12

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20081110

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

Ref country code: GB

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

Effective date: 20081110

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20100601

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: AT

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

Effective date: 20091110

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

Ref country code: NL

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

Effective date: 20100601

Ref country code: LI

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

Effective date: 20091130

Ref country code: CH

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

Effective date: 20091130

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 19

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 20

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

Ref country code: FR

Payment date: 20161118

Year of fee payment: 20

Ref country code: DE

Payment date: 20161129

Year of fee payment: 20

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

Ref country code: ES

Payment date: 20161114

Year of fee payment: 20

Ref country code: IT

Payment date: 20161123

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59710352

Country of ref document: DE

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20180508

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

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20171111