EP0090761A1 - Rinne für eine Metallschmelze - Google Patents
Rinne für eine Metallschmelze Download PDFInfo
- Publication number
- EP0090761A1 EP0090761A1 EP83630051A EP83630051A EP0090761A1 EP 0090761 A1 EP0090761 A1 EP 0090761A1 EP 83630051 A EP83630051 A EP 83630051A EP 83630051 A EP83630051 A EP 83630051A EP 0090761 A1 EP0090761 A1 EP 0090761A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- channel according
- refractory
- thermal conductivity
- channel
- 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
Links
- 239000002184 metal Substances 0.000 title claims description 9
- 229910052751 metal Inorganic materials 0.000 title claims description 9
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 14
- 239000010439 graphite Substances 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910001338 liquidmetal Inorganic materials 0.000 claims abstract description 8
- 239000011819 refractory material Substances 0.000 claims abstract description 7
- 239000012809 cooling fluid Substances 0.000 claims abstract description 6
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 3
- 229910001018 Cast iron Inorganic materials 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 229910001208 Crucible steel Inorganic materials 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 229910003481 amorphous carbon Inorganic materials 0.000 abstract 1
- 239000011449 brick Substances 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000011150 reinforced concrete Substances 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 239000004567 concrete Substances 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/14—Discharging devices, e.g. for slag
Definitions
- the present invention relates to a pouring channel intended to receive liquid metals from a furnace and in particular from the cast iron of a blast furnace.
- Trenches comprising a wear refractory layer, in contact with the molten metal, enveloped by a permanent movement which is housed directly in the reinforced concrete slab of the pouring floor.
- the channel fills with cast iron and slag which floats.
- a baffle system allows density separation of the pig iron and the slag.
- the channel is emptied and repair work must be carried out.
- the accessibility of the hot channel as well as the duration of these works prevent a rapid re-use of the channel, which is incompatible with the rate of casting of modern blast furnaces.
- Rehabilitation involves a large volume of strenuous work. Consequently, the technique of using the channel has been modified in order to permanently store in it a bath of liquid iron covered with a more or less significant layer of slag.
- the temperature of the cast iron can drop after around 1,500 ° C to around 1,300 ° C.
- the permanent presence of liquid iron in the channel results in a continuous thermal flow towards the reinforced concrete of the slab of the pouring floor which heats up in its mass, which causes stresses of expansion, bursts and cracks.
- the support sheet and the refractory lining undergo differential expansion, which does not fail to cause stresses and cracks in the refractory lining, especially when the thermal regime to which the channel is subjected is variable p .ex. in case of occasional emptying of the channel during a shutdown of the blast furnace. These cracks allow the cast iron to infiltrate the refractory lining and this results in breakthroughs in the channel.
- the object of the present invention is to propose a channel which does not have the defects described above and which is capable of being installed directly in the reinforced concrete structures of the pouring floor.
- the channel according to the invention the refractory material of which is surrounded by a practically isothermal layer in which prevails a temperature preferably less than 100 ° C.
- a practically isothermal layer in which prevails a temperature preferably less than 100 ° C.
- the advantages of the channel are due to the presence of a layer of material maintained at low temperature and practically isothermal, which limits the heating of the support structures of the channel, which by its great capacity of distribution and evacuation of calories freezes all liquid metal infiltration into the permanent refractory lining of the channel.
- the overall cooling rate is always quite low, so that the cast iron remains liquid even if the interval between two successive flows is 5 to 8 hours.
- a cast iron bath 1, carrying a layer of slag 2, is in contact with a wear layer 3, the cross section of which is U-shaped.
- This wear layer 3, formed by an unshaped material, is produced on a permanent covering 4, which in the present case consists of two layers of overlapping bricks.
- the outer layer of bricks rests against graphite blocks 7 and cooling elements 10.
- These elements 10 disposed both in the side walls and in the bottom of the channel are formed by sealed longitudinal conduits 5, in which circulates water, sandwiched between flat graphite bricks 6 and 8.
- the bricks 8 are in contact with the permanent coating 4.
- the space 9 between the conduits 5, the bricks 6 and 8 as well as the graphite blocks 7, is filled with an unshaped material, good conductor of heat, ensuring good thermal contact with the cooling tubes.
- the unshaped material also allows expansion of the conduits caused by small temperature variations.
- the channel is housed in a reinforced concrete slab 12.
- An equalizing layer 11 eliminates the roughness of the concrete.
- the graphite blocks 6,7,8 excellent heat conductors create a practically uniform temperature zone around the permanent coating 4. This temperature is controlled essentially by the flow and the temperature of the cooling water. The assembly is adjusted so as to make the temperature at the reinforced concrete - cooling layer interface prevail below 100 ° C and preferably around 60 ° C.
- the permanent coating 4 made of bricks capable of withstanding the direct action of cast iron constitutes a thermal barrier which prevents the cooling system from drawing too much heat from the liquid cast iron.
- the material of the bricks resp. the number of brick layers to be superimposed is chosen in accordance with the desired degree of thermal insulation. Prehistoric cooling of certain highly stressed areas can be achieved by a judicious choice of the quality of the bricks of the refractory lining of the permanent layer. To drastically reduce the erosion of the wear layer, at the points where it is particularly stressed, one can replace some of the bricks of the coating 4 by bricks with high thermal conductivity 4a, which are preferably made of semi-graphite .
- conduits guiding the cooling fluid may be advantageous to fix the conduits guiding the cooling fluid to the outside thereon, eg by welding.
- the channel Since it is easy to maintain a temperature below 80 ° C in the isothermal zone, the channel is particularly suitable for being housed directly in the concrete structure. from the casting floor.
- the conduits guiding the coolant outside the construction can be arranged. ex. by welding U irons along the sheet. heat between the low temperature zone and the cooling system in this case passes through the support sheets that there is significant heating (temperature below 100 ° C).
- the spacing, shape and arrangement of the conduits must be chosen as a function of the thermal conductivity and the thickness of the layer constituting the low temperature zone as well as the desired temperature profile in the refractory lining.
- the conduits can be supplied in parallel or in series. To optimize the operation of the channel, the temperature of the coolant can be monitored and the flow rate can be varied depending on the temperature.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Blast Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Ceramic Products (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT83630051T ATE32350T1 (de) | 1982-03-26 | 1983-03-15 | Rinne fuer eine metallschmelze. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU84042 | 1982-03-26 | ||
| LU84042A LU84042A1 (fr) | 1982-03-26 | 1982-03-26 | Rigole de coulee pour metaux liquides |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0090761A1 true EP0090761A1 (de) | 1983-10-05 |
| EP0090761B1 EP0090761B1 (de) | 1988-02-03 |
Family
ID=19729848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP83630051A Expired EP0090761B1 (de) | 1982-03-26 | 1983-03-15 | Rinne für eine Metallschmelze |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US4508323A (de) |
| EP (1) | EP0090761B1 (de) |
| JP (1) | JPS58181812A (de) |
| KR (1) | KR910001483B1 (de) |
| AR (1) | AR230579A1 (de) |
| AT (1) | ATE32350T1 (de) |
| AU (1) | AU554627B2 (de) |
| BR (1) | BR8301539A (de) |
| CA (1) | CA1210583A (de) |
| DE (1) | DE3375582D1 (de) |
| ES (1) | ES8407101A1 (de) |
| LU (1) | LU84042A1 (de) |
| MX (1) | MX158032A (de) |
| PT (1) | PT76439B (de) |
| ZA (1) | ZA832009B (de) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0143971A1 (de) * | 1983-10-28 | 1985-06-12 | Betriebsforschungsinstitut VDEh Institut für angewandte Forschung GmbH | Abstichrinne für einen Schachtofen |
| EP0404212A1 (de) * | 1989-06-21 | 1990-12-27 | Hoogovens Groep B.V. | Rinne für eine Roheisenschmelze |
| US5088695A (en) * | 1991-03-05 | 1992-02-18 | Hoogovens Groep Bv | Iron runner |
| EP0501045A1 (de) * | 1991-02-27 | 1992-09-02 | Hoogovens Groep B.V. | Roheisen-Abstichrinne |
| NL1003885C2 (nl) * | 1996-08-27 | 1998-03-03 | Hoogovens Tech Services | Goot voor een hete smelt en gootsysteem. |
| LU90195B1 (de) * | 1998-01-15 | 1999-07-16 | Wurth Paul Sa | Abstichrinne fuer eine Eisenschmelze |
| CN101934434A (zh) * | 2010-09-26 | 2011-01-05 | 大庆市锐虹机械制造有限公司 | 铸铁热补焊工艺及装置 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8803103A (nl) * | 1988-12-19 | 1990-07-16 | Hoogovens Groep Bv | Ijzergoot. |
| NL1007881C2 (nl) * | 1997-12-23 | 1999-06-24 | Hoogovens Tech Services | Goot voor het geleiden van een stroom vloeibaar metaal. |
| JP5546874B2 (ja) * | 2010-01-13 | 2014-07-09 | 東京窯業株式会社 | 溶銑・ノロ樋 |
| CA2876518C (en) * | 2012-06-14 | 2017-03-28 | Les Produits Industriels De Haute Temperature Pyrotek Inc. | Receptacle for handling molten metal, casting assembly and manufacturing method |
| CN106270475B (zh) * | 2016-11-10 | 2018-11-06 | 芜湖新兴铸管有限责任公司 | 浇注包定型包嘴 |
| CN110331247A (zh) * | 2019-08-21 | 2019-10-15 | 北京瑞尔非金属材料有限公司 | 一种冷却型铁水主沟和冷却方法 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB257261A (en) * | 1925-08-20 | 1927-07-21 | Carborundum Co | Improvements in or relating to furnaces |
| FR2066312A5 (de) * | 1969-11-12 | 1971-08-06 | Demag Ag | |
| FR2243404A1 (de) * | 1973-09-12 | 1975-04-04 | Hoogovens Ijmuiden Bv | |
| EP0023716A1 (de) * | 1979-08-03 | 1981-02-11 | Nippon Steel Corporation | Hochofen und Verfahren zum Betrieb |
| EP0040440A2 (de) * | 1980-03-21 | 1981-11-25 | Hoogovens Groep B.V. | Schachtofen, insbesondere die feuerfeste Konstruktion dessen Gestellbodens |
| EP0060239A1 (de) * | 1981-03-04 | 1982-09-15 | VOEST-ALPINE Aktiengesellschaft | Rinne für eine Metallschmelze |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS422321Y1 (de) * | 1964-09-03 | 1967-02-13 | ||
| SU392093A1 (ru) * | 1971-05-14 | 1973-07-27 | Всесоюзный научно исследовательский , проектный институт очистке технологических газов, сточных вод , использованию вторичных энергоресурсов предпри тий черной металлургии | Желоб для выпуска чугуна |
-
1982
- 1982-03-26 LU LU84042A patent/LU84042A1/fr unknown
-
1983
- 1983-02-22 CA CA000422135A patent/CA1210583A/fr not_active Expired
- 1983-03-10 ES ES520463A patent/ES8407101A1/es not_active Expired
- 1983-03-15 AT AT83630051T patent/ATE32350T1/de not_active IP Right Cessation
- 1983-03-15 EP EP83630051A patent/EP0090761B1/de not_active Expired
- 1983-03-15 DE DE8383630051T patent/DE3375582D1/de not_active Expired
- 1983-03-21 AR AR292458A patent/AR230579A1/es active
- 1983-03-22 ZA ZA832009A patent/ZA832009B/xx unknown
- 1983-03-22 AU AU12690/83A patent/AU554627B2/en not_active Ceased
- 1983-03-23 US US06/478,064 patent/US4508323A/en not_active Expired - Fee Related
- 1983-03-24 BR BR8301539A patent/BR8301539A/pt not_active IP Right Cessation
- 1983-03-24 KR KR1019830001196A patent/KR910001483B1/ko not_active Expired
- 1983-03-24 PT PT76439A patent/PT76439B/pt unknown
- 1983-03-25 MX MX196718A patent/MX158032A/es unknown
- 1983-03-25 JP JP58049067A patent/JPS58181812A/ja active Granted
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB257261A (en) * | 1925-08-20 | 1927-07-21 | Carborundum Co | Improvements in or relating to furnaces |
| FR2066312A5 (de) * | 1969-11-12 | 1971-08-06 | Demag Ag | |
| FR2243404A1 (de) * | 1973-09-12 | 1975-04-04 | Hoogovens Ijmuiden Bv | |
| EP0023716A1 (de) * | 1979-08-03 | 1981-02-11 | Nippon Steel Corporation | Hochofen und Verfahren zum Betrieb |
| EP0040440A2 (de) * | 1980-03-21 | 1981-11-25 | Hoogovens Groep B.V. | Schachtofen, insbesondere die feuerfeste Konstruktion dessen Gestellbodens |
| EP0060239A1 (de) * | 1981-03-04 | 1982-09-15 | VOEST-ALPINE Aktiengesellschaft | Rinne für eine Metallschmelze |
Non-Patent Citations (2)
| Title |
|---|
| PATENTS ABSTRACTS OF JAPAN, vol. 4, no. 166(C-31)(648), 18 novembre 1980, page 51C31 & JP-A-55 107 707 (SUMITOMO KINZOKU KOGYO K.K.) 19-08-1980 * |
| PATENTS ABSTRACTS OF JAPAN, vol. 5, no. 156(C-74)(828), 6 octobre 1981 & JP-A-56 087612 (SHIN NIPPON SEITETSU K.K.) 16-07-1981 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0143971A1 (de) * | 1983-10-28 | 1985-06-12 | Betriebsforschungsinstitut VDEh Institut für angewandte Forschung GmbH | Abstichrinne für einen Schachtofen |
| EP0404212A1 (de) * | 1989-06-21 | 1990-12-27 | Hoogovens Groep B.V. | Rinne für eine Roheisenschmelze |
| US5031882A (en) * | 1989-06-21 | 1991-07-16 | Hoogovens Groep B.V. | Channel structure for flow of molten pig iron |
| EP0501045A1 (de) * | 1991-02-27 | 1992-09-02 | Hoogovens Groep B.V. | Roheisen-Abstichrinne |
| US5088695A (en) * | 1991-03-05 | 1992-02-18 | Hoogovens Groep Bv | Iron runner |
| NL1003885C2 (nl) * | 1996-08-27 | 1998-03-03 | Hoogovens Tech Services | Goot voor een hete smelt en gootsysteem. |
| WO1998008982A1 (en) * | 1996-08-27 | 1998-03-05 | Hoogovens Technical Services Europe B.V. | Runner for a hot melt, runner system and method for conveying a hot melt |
| US6090340A (en) * | 1996-08-27 | 2000-07-18 | Hoogovens Technical Services Europe Bv | Runner for a hot melt, runner system and method for conveying a hot melt |
| LU90195B1 (de) * | 1998-01-15 | 1999-07-16 | Wurth Paul Sa | Abstichrinne fuer eine Eisenschmelze |
| WO1999036580A1 (de) * | 1998-01-15 | 1999-07-22 | Paul Wurth S.A. | Abstichrinne für eine eisenschmelze |
| CN101934434A (zh) * | 2010-09-26 | 2011-01-05 | 大庆市锐虹机械制造有限公司 | 铸铁热补焊工艺及装置 |
| CN101934434B (zh) * | 2010-09-26 | 2012-10-03 | 大庆市锐虹机械制造有限公司 | 铸铁热补焊工艺及装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE32350T1 (de) | 1988-02-15 |
| ES520463A0 (es) | 1984-08-16 |
| LU84042A1 (fr) | 1983-11-17 |
| DE3375582D1 (en) | 1988-03-10 |
| AR230579A1 (es) | 1984-05-31 |
| ES8407101A1 (es) | 1984-08-16 |
| CA1210583A (fr) | 1986-09-02 |
| MX158032A (es) | 1988-12-18 |
| JPH0225962B2 (de) | 1990-06-06 |
| ZA832009B (en) | 1983-11-30 |
| PT76439A (fr) | 1983-04-01 |
| BR8301539A (pt) | 1983-12-06 |
| KR840003970A (ko) | 1984-10-06 |
| US4508323A (en) | 1985-04-02 |
| AU554627B2 (en) | 1986-08-28 |
| AU1269083A (en) | 1983-09-29 |
| KR910001483B1 (ko) | 1991-03-09 |
| EP0090761B1 (de) | 1988-02-03 |
| PT76439B (fr) | 1985-12-20 |
| JPS58181812A (ja) | 1983-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0090761B1 (de) | Rinne für eine Metallschmelze | |
| EP0616982B1 (de) | Verfahren und Vorrichtung zum Schmelzen von Glas | |
| JP4653758B2 (ja) | 溶融金属のための加熱樋 | |
| FR2493871A1 (fr) | Plaques de refroidissement pour hauts fourneaux | |
| FR2554024A1 (fr) | Busette de coulee a immersion | |
| RU99128091A (ru) | Конструкция стены из огнеупорного кирпича | |
| US4060692A (en) | Induction melting furnace | |
| EP0430740B1 (de) | Plattenkühler für Hochöfen und eine aus solchen Kühlelementen zusammengesetzte Einrichtung | |
| Smith et al. | Toward understanding pore formation and mobility during controlled directional solidification in a microgravity environment investigation (PFMI) | |
| EP0012132A1 (de) | Metallische Kühlelemente für Industrieöfen | |
| FR2354525A1 (fr) | Appareillage de fusion et de coulee | |
| FR2537261A1 (fr) | Procede et dispositif pour l'utilisation d'un four a arc a courant continu | |
| BE897590A (fr) | Elements moules d'isolation destines au revetement de conduits refroidis de chaufferies | |
| JP4655301B2 (ja) | 金属の溶解出湯装置 | |
| FR2707272A1 (fr) | Perfectionnements apportés aux rouleaux refroidis pour la manutention de produits notamment métallurgiques et sidérurgiques. | |
| NO771583L (no) | Lysbueovn. | |
| EP0043329B1 (de) | Elektrischer Lichtbogenofen mit gesteuertem Betrieb | |
| JP2010280552A (ja) | シリコン融液の搬送部材及びシリコン融液の搬送方法 | |
| FR2520101A1 (fr) | Recipients metallurgiques revetus d'un garnissage refractaire a tenue amelioree | |
| FR2530325A1 (fr) | Dispositif pour refroidissement de la paroi de four metallurgique | |
| WO1991018250A1 (fr) | Procede et four de graphitisation | |
| EP0410829A1 (de) | Verfahren zum Heizen eines Metallbades | |
| BE413573A (de) | ||
| JPH11257873A (ja) | 熱間押出ビレット用低周波誘導加熱炉ライニング方法とその炉壁構造 | |
| FR2663951A1 (fr) | Cuve de convertisseur pour l'elaboration de metal liquide. |
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 |
|
| AK | Designated contracting states |
Designated state(s): AT BE DE FR GB IT NL SE Kind code of ref document: A1 Designated state(s): AT BE DE FR GB IT NL SE |
|
| 17P | Request for examination filed |
Effective date: 19840321 |
|
| 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 FR GB IT NL SE |
|
| REF | Corresponds to: |
Ref document number: 32350 Country of ref document: AT Date of ref document: 19880215 Kind code of ref document: T |
|
| ITF | It: translation for a ep patent filed | ||
| REF | Corresponds to: |
Ref document number: 3375582 Country of ref document: DE Date of ref document: 19880310 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
| 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: FR Payment date: 19910206 Year of fee payment: 9 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19910209 Year of fee payment: 9 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19910219 Year of fee payment: 9 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19910304 Year of fee payment: 9 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19910313 Year of fee payment: 9 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19910320 Year of fee payment: 9 |
|
| ITTA | It: last paid annual fee | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19910331 Year of fee payment: 9 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19920315 Ref country code: AT Effective date: 19920315 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19920316 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Effective date: 19920331 |
|
| BERE | Be: lapsed |
Owner name: S.A. ARBED Effective date: 19920331 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19921001 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19921130 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19921201 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| EUG | Se: european patent has lapsed |
Ref document number: 83630051.7 Effective date: 19921005 |