EP0540405A1 - Verfahren zur Herstellung von magnetischen Stahlbändern durch Direktgiessen - Google Patents
Verfahren zur Herstellung von magnetischen Stahlbändern durch Direktgiessen Download PDFInfo
- Publication number
- EP0540405A1 EP0540405A1 EP92402903A EP92402903A EP0540405A1 EP 0540405 A1 EP0540405 A1 EP 0540405A1 EP 92402903 A EP92402903 A EP 92402903A EP 92402903 A EP92402903 A EP 92402903A EP 0540405 A1 EP0540405 A1 EP 0540405A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- less
- skin
- cylinder
- solidified
- 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
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular fabrication or treatment of ingot or slab
- C21D8/1211—Rapid solidification; Thin strip casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- C21D8/1233—Cold rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1266—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest between cold rolling steps
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1272—Final recrystallisation annealing
Definitions
- the present invention relates to a process for producing a magnetic grain oriented steel strip having a thickness of less than 5 mm and containing in composition by weight more than 2% of silicon, less than 0.1% of carbon, inhibiting elements. secondary recrystallization, the rest being iron, by direct casting on a cylinder or between two cylinders to obtain it.
- Oriented grain magnetic sheets are used for the manufacture of large size magnetic circuits, transformers and rotating machines.
- the crystallographic direction ⁇ 001> which is the direction of easy magnetization, must be parallel to the rolling direction.
- the continuously cast slabs are hot rolled on a belt train and seeds of GOSS orientation ⁇ 110 ⁇ ⁇ 001> according to the crystallographic notation of MILLER are generated during this time. rolling operation.
- inhibitors such as MnS, AlN, BN and / or Sn and Sb which are partially precipitated or segregated in the hot-rolled strip or precipitate during subsequent heat treatments (annealing of the hot-rolled strip and / or intermediate annealing between two rolling cold). If the previous thermal cycles are adequate, the dimensions of a quantity sufficient precipitates are less than 100 nanometers after decarburization.
- the final static annealing in coils allows the selective growth of GOSS germs inherited from hot rolling thanks to the inhibition, by the precipitates, of the normal growth of grains not having the desired orientation. This is the phenomenon known as secondary recrystallization, the primary recrystallization taking place during the decarburization operation.
- a new process for directly obtaining a thin strip with a thickness of less than 5mm by pouring liquid metal between two cylinders or on a cylinder eliminates hot rolling so that the germs of GOSS can no longer be generated by hot rolling as in conventional processes. It is therefore essential to determine new casting conditions which favor the existence of GOSS germs in the thin strip in the raw casting state.
- the strip in the raw casting state, which has undergone recrystallization after solidification is isotropic, that is to say of random texture, the grains having no orientation preferential. Secondary recrystallization is obtained, after a cold reduction rate greater than 80%, during a secondary recrystallization annealing.
- the objective of the invention is to propose a method making it possible to obtain GOSS germs in a thin strip without it being necessary to provide for a specific secondary heat treatment.
- the subject of the invention is a process for producing a magnetic steel strip with a thickness of less than 5 mm, containing in its composition by weight more than 2% of silicon, less than 0.1% of carbon, and elements which inhibit secondary recrystallization in suitable quantity, the rest being iron, this preparation being carried out by direct casting on a cylinder or between two cylinders, characterized in that it causes the formation of grains oriented ⁇ 110 ⁇ ⁇ 001> in skin , on the surface of at least one quenching zone, by subjecting the steel to brutal cooling by bringing the steel into contact with the or each cylinder, the surface temperature of which is less than 400 ° C.
- the invention also relates to an oriented grain sheet obtained from a strip produced by the process and which is characterized in that it comprises a columnar structure in the quenching zone and a non-columnar basalt structure comprising grains of the GOSS type. in skin.
- It also includes a central area with an equiaxed structure.
- FIG. 1 shows the variation of the temperature of the surface of the strip in contact with the cylinders and the temperature cycle of the skin at the outlet of the mold.
- Figs. 2A and 2B show in section two strip structures at the outlet of the ingot mold, corresponding respectively to a speed of cylinders allowing the casting of a strip comprising a central molten zone at the outlet of the ingot mold (2A), and at a lower speed allowing the casting of a strip without liquid central zone at the outlet of the mold (2B).
- the control of the solidification conditions makes it possible to obtain GOSS seeds in a thin strip obtained by direct casting in the case of natural cooling, that is to say without using a specific secondary cooling involving, for example, a spraying of water.
- a possible secondary cooling can take place but it is not then intended to solve a metallurgical problem related to the structure. It can for example be imposed by technological constraints of winding or by the concern of avoiding a surface oxidation, and can be carried out for example by sweeping of neutral gas.
- the seeds of GOSS are created in the mold by contact of the cast metal with the cylinders by optimizing the heat exchange conditions between the liquid metal and the surface of the cylinders and these germs are preserved. , under the center distance, and at the outlet of the ingot mold, without using a specific secondary cooling system, by controlling a specific parameter of the continuous casting process, for example the casting speed.
- the casting devices between two cylinders are not equipped with additional cooling systems, the cooling of the solidified strip taking place in ambient air.
- Fig. 1 shows the temperature of the surface of the strip in contact with the cylinder during the passage of the metal between the two cylinders of the mold in continuous casting and the cooling cycle of the skin of the band at the outlet of the mold.
- the core having a higher temperature than that of the quenching zone raises the temperature of said skin (zone II).
- zone III the skin is subjected to natural cooling with ambient air which does not require the use of an accelerated cooling device such as by spraying with water.
- Curve C1 corresponds to a casting speed V1 and curve C2 to a casting speed V2> V1.
- Figs. 2A and 2B are two diagrams representing two strip structures at the outlet of the cylinders 5 and 6, comprising respectively on the one hand a central zone 7 liquid between two quenching zones 8 and 9 (2A) and on the other hand two zones of quenching 8 and 9 juxtaposed, the central zone 7 being solidified at the outlet of the mold (2B).
- the observation of the microstructure of the Fe-Si band in the raw state of casting between two cylinders was carried out on samples so as to reveal germs of GOSS.
- the polished samples were subjected to a first attack with dilute nitric acid to reveal the grain boundaries, then to a second attack using a reagent containing hydrofluoric acid and hydrogen peroxide.
- the corrosion figures thus obtained were used for the determination of the crystal orientations of the grains and the location of the GOSS grains. It is noted that the germs of GOSS are located in the extreme skin, on the surface of the quenching zone in contact with the surface of the cylinder. It is the part solidified according to a non-columnar basaltic mode. To have GOSS grains at room temperature in the raw casting products, generate their formation during the first contact with the surface of the cylinder and preserve them by avoiding the enlargement of the adjacent columnar grains and by promoting their growth before the strip loses contact with the cylinders at the outlet of the mold.
- the metal on the strip surface undergoes rapid cooling and at the outlet of the mold the skin is subjected to heating by the core containing, if necessary, more or less liquid steel.
- the minimum temperature T min reached by the skin at the outlet of the ingot mold is less than 1400 ° C.
- the speed of natural cooling of the strip substantially equal in skin and at heart is not greater than 100 ° C / s.
- the originality of the present invention lies in the demonstration of the creation of GOSS germs in the mold, during the first contact of the liquid with the surface of the cylinder.
- Table 3 gives the experimental conditions and the structural characteristics of the strip cast between two cylinders.
- Table 4 describes the different stages of transformation of the pickled strip. Table 4 - Reduction rate of the first cold rolling 79% - Intermediate annealing 980 ° C, 1 min 30 - Reduction rate of the second cold rolling 55% - Decarburization annealing Mgo coating 870 ° C, 3 min - High temperature annealing 1200 ° C, 8 p.m.
- the quantity and the size of the manganese and copper sulphides resulting from the cooling of the strip with calm ambient air are compatible with the existence of a satisfactory inhibitory power.
- numerous precipitates identified by transmission electron microscopy have a spherical shape of approximately 10 to 100 nm in diameter.
- the inhibiting power can be reinforced by adding inhibitors, to the magnesia which is used as an annealing separator to avoid sticking of the turns of the coil during the secondary recrystallization annealing.
- the invention is applicable to the methods of direct casting of thin strips between two rolls and on a roll with a view to obtaining oriented grain sheets of conventional permeability or with high permeability. It is applicable whatever the mode of inhibition (sulphides, selenides, nitrides, segregated elements) of the normal growth of the primary recrystallization grains favoring the selective growth of the GOSS grains and whatever the downstream treatment of the band obtained by direct casting of liquid metal on a cylinder or between two cylinders.
- This downstream treatment can comprise a single cold rolling with a high reduction rate (greater than 80%) to obtain a high performance sheet or consist of a treatment classic two or more cold rolling with intermediate annealing (s).
- the strip in the raw casting state may be annealed before cold rolling, in particular with a view to optimizing the size of the inhibitors.
- Cold rolling is followed by on-line treatment, primary recrystallization and decarburization.
- the final annealing of the coils after coating with a milk of magnesia to avoid sticking of the turns, in a static oven promotes the phenomenon of secondary recrystallization which leads to the selective formation of orientation grains ⁇ 110 ⁇ ⁇ 001>.
- the conditions for obtaining the strip between two cylinders can be adapted in the case of casting on a cylinder or by lateral supply of a cylinder with liquid metal.
- the ⁇ 110 ⁇ ⁇ 001> orientation grains are obtained under the same conditions, the pressure applied per millimeter of band width being zero.
- the grains of GOSS are then only present on the face of the strip in contact with the cylinder.
- Table 5 gives an example of the number of grains of GOSS per cm of skin and the percentage of grain of GOSS on the single face of contact with the cylinder as a function of the experimental conditions of casting on a single cylinder.
- Table 5 Cylinder surface temperature (° C) 280 Casting speed (m / mm) 30 Strip thickness (mm) 1.38 Percentage of central area 0 % carbon of solidified metal 0.016 % of GOSS grains on the surface 5.8
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- Electromagnetism (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
- Coating With Molten Metal (AREA)
- Control And Safety Of Cranes (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9113499A FR2683229B1 (fr) | 1991-10-31 | 1991-10-31 | Procede d'elaboration d'une bande d'acier magnetique par coulee directe. |
FR9113499 | 1992-10-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0540405A1 true EP0540405A1 (de) | 1993-05-05 |
EP0540405B1 EP0540405B1 (de) | 1997-01-22 |
Family
ID=9418534
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92402903A Expired - Lifetime EP0540405B1 (de) | 1991-10-31 | 1992-10-26 | Verfahren zur Herstellung von magnetischen Stahlbändern durch Direktgiessen |
Country Status (16)
Country | Link |
---|---|
US (1) | US5417772A (de) |
EP (1) | EP0540405B1 (de) |
JP (1) | JP2863679B2 (de) |
AT (1) | ATE148175T1 (de) |
CZ (1) | CZ284160B6 (de) |
DE (2) | DE69216994T2 (de) |
DK (1) | DK0540405T3 (de) |
ES (1) | ES2099233T3 (de) |
FR (1) | FR2683229B1 (de) |
GR (1) | GR3023079T3 (de) |
HU (1) | HU214854B (de) |
PL (1) | PL171088B1 (de) |
RO (1) | RO114349B1 (de) |
RU (1) | RU2105074C1 (de) |
SK (1) | SK281332B6 (de) |
UA (1) | UA26031C2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002050318A1 (en) * | 2000-12-18 | 2002-06-27 | Thyssenkrupp Acciai Speciali Terni S.P.A. | Process for the production of grain oriented electrical steel |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19745445C1 (de) * | 1997-10-15 | 1999-07-08 | Thyssenkrupp Stahl Ag | Verfahren zur Herstellung von kornorientiertem Elektroblech mit geringem Ummagnetisierungsverlust und hoher Polarisation |
US7059384B2 (en) * | 2001-06-15 | 2006-06-13 | National Research Council Of Canada | Apparatus and method for metal strip casting |
EP1436432B1 (de) * | 2001-09-13 | 2006-05-17 | AK Steel Properties, Inc. | Verfahren zum kontinuierlichen giessen von elektrostahlband mit kontrollierter sprühkühlung |
AU2008100847A4 (en) * | 2007-10-12 | 2008-10-09 | Bluescope Steel Limited | Method of forming textured casting rolls with diamond engraving |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3061486A (en) * | 1957-12-30 | 1962-10-30 | Armco Steel Corp | Non-directional oriented silicon-iron |
US3115430A (en) * | 1960-09-20 | 1963-12-24 | Armco Steel Corp | Production of cube-on-edge oriented silicon iron |
EP0095352A2 (de) * | 1982-05-24 | 1983-11-30 | Kawasaki Steel Corporation | Verfahren und Vorrichtung zum Herstellen von schnell erhärteten Stahlbändern durch ein Doppelrollensystem |
EP0390160A1 (de) | 1989-03-30 | 1990-10-03 | Nippon Steel Corporation | Verfahren zur Herstellung kornorientierter Elektrostahlbleche mittels rascher Abschreckung und Erstarrung |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6179724A (ja) * | 1984-09-28 | 1986-04-23 | Nippon Kokan Kk <Nkk> | 高珪素鉄合金の薄板製造方法 |
US5259443A (en) * | 1987-04-21 | 1993-11-09 | Nippon Yakin Kogyo Co., Ltd. | Direct production process of a length of continuous thin two-phase stainless steel strip having excellent superplasticity and surface properties |
DE8816779U1 (de) * | 1988-08-13 | 1990-08-16 | Kiekert GmbH & Co KG, 5628 Heiligenhaus | Kraftfahrzeug-Türverschlußvorrichtung |
JPH02258149A (ja) * | 1989-03-30 | 1990-10-18 | Nippon Steel Corp | 一方向性高磁束密度電磁鋼板の製造方法 |
US5259439A (en) * | 1990-04-04 | 1993-11-09 | Ishikawajima-Harima Heavy Industries Company Limited | Strip casting |
-
1991
- 1991-10-31 FR FR9113499A patent/FR2683229B1/fr not_active Expired - Fee Related
-
1992
- 1992-10-26 DK DK92402903.6T patent/DK0540405T3/da active
- 1992-10-26 ES ES92402903T patent/ES2099233T3/es not_active Expired - Lifetime
- 1992-10-26 DE DE69216994T patent/DE69216994T2/de not_active Expired - Fee Related
- 1992-10-26 EP EP92402903A patent/EP0540405B1/de not_active Expired - Lifetime
- 1992-10-26 AT AT92402903T patent/ATE148175T1/de not_active IP Right Cessation
- 1992-10-28 DE DE4236359A patent/DE4236359A1/de not_active Ceased
- 1992-10-28 US US07/967,439 patent/US5417772A/en not_active Expired - Lifetime
- 1992-10-29 PL PL92296412A patent/PL171088B1/pl not_active IP Right Cessation
- 1992-10-30 RU RU92004372A patent/RU2105074C1/ru not_active IP Right Cessation
- 1992-10-30 RO RO92-01362A patent/RO114349B1/ro unknown
- 1992-10-30 SK SK3279-92A patent/SK281332B6/sk unknown
- 1992-10-30 CZ CS923279A patent/CZ284160B6/cs not_active IP Right Cessation
- 1992-10-30 HU HU9203426A patent/HU214854B/hu not_active IP Right Cessation
- 1992-11-02 JP JP4294481A patent/JP2863679B2/ja not_active Expired - Fee Related
-
1993
- 1993-06-15 UA UA93002909A patent/UA26031C2/uk unknown
-
1997
- 1997-04-08 GR GR970400747T patent/GR3023079T3/el unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3061486A (en) * | 1957-12-30 | 1962-10-30 | Armco Steel Corp | Non-directional oriented silicon-iron |
US3115430A (en) * | 1960-09-20 | 1963-12-24 | Armco Steel Corp | Production of cube-on-edge oriented silicon iron |
EP0095352A2 (de) * | 1982-05-24 | 1983-11-30 | Kawasaki Steel Corporation | Verfahren und Vorrichtung zum Herstellen von schnell erhärteten Stahlbändern durch ein Doppelrollensystem |
EP0390160A1 (de) | 1989-03-30 | 1990-10-03 | Nippon Steel Corporation | Verfahren zur Herstellung kornorientierter Elektrostahlbleche mittels rascher Abschreckung und Erstarrung |
Non-Patent Citations (2)
Title |
---|
IRON AND STEEL ENGINEER. vol. 67, no. 7, Juillet 1990, PITTSBURGH US pages 51 - 55 J.A.BURGO ET AL 'Thermal design and analysis of a twin-roll caster' * |
PATENT ABSTRACTS OF JAPAN vol. 15, no. 6 (M-1066)8 Janvier 1991 & JP-A-2 258 149 ( NIPPON STEEL ) 18 Octobre 1990 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002050318A1 (en) * | 2000-12-18 | 2002-06-27 | Thyssenkrupp Acciai Speciali Terni S.P.A. | Process for the production of grain oriented electrical steel |
US7198682B2 (en) | 2000-12-18 | 2007-04-03 | Thyssenkrupp Acciai Speciali Terni S.P.A. | Process for the production of grain oriented electrical steel |
Also Published As
Publication number | Publication date |
---|---|
SK281332B6 (sk) | 2001-02-12 |
DE69216994D1 (de) | 1997-03-06 |
UA26031C2 (uk) | 1999-02-26 |
US5417772A (en) | 1995-05-23 |
CZ327992A3 (en) | 1994-03-16 |
HU9203426D0 (en) | 1993-03-01 |
PL296412A1 (en) | 1993-07-12 |
JPH06142851A (ja) | 1994-05-24 |
RU2105074C1 (ru) | 1998-02-20 |
RO114349B1 (ro) | 1999-03-30 |
GR3023079T3 (en) | 1997-07-30 |
CZ284160B6 (cs) | 1998-09-16 |
SK327992A3 (en) | 1995-07-11 |
PL171088B1 (pl) | 1997-03-28 |
ES2099233T3 (es) | 1997-05-16 |
FR2683229A1 (fr) | 1993-05-07 |
ATE148175T1 (de) | 1997-02-15 |
DE69216994T2 (de) | 1997-06-12 |
DE4236359A1 (de) | 1993-05-06 |
DK0540405T3 (da) | 1997-02-10 |
HU214854B (hu) | 1998-06-29 |
EP0540405B1 (de) | 1997-01-22 |
JP2863679B2 (ja) | 1999-03-03 |
HUT71567A (en) | 1995-12-28 |
FR2683229B1 (fr) | 1994-02-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2459471C (en) | Method of continuously casting electrical steel strip with controlled spray cooling | |
KR940000596A (ko) | 알루미늄 합금 캔 본체 시이트의 제조방법 | |
CN104364409A (zh) | 改进的铝合金及其生产方法 | |
AU2002326892A1 (en) | Method of continuously casting electrical steel strip with controlled spray cooling | |
FR2533586A1 (fr) | Procede de fabrication d'une tole d'acier electrique a grain oriente ayant une haute densite de flux magnetique | |
EP1466024A1 (de) | Verfahren zur herstellung eines eisenhüttenprodukts aus unlegiertem stahl mit hohem kupfergehalt und danach erhaltenes eisenhüttenprodukt | |
JP2004515362A (ja) | 高いマンガン含有量を有する鋼からの熱間ストリップの製造方法 | |
EP0540405B1 (de) | Verfahren zur Herstellung von magnetischen Stahlbändern durch Direktgiessen | |
JPH032932B2 (de) | ||
KR930007312B1 (ko) | 큐브-온-에지 방위(cube-on-edge orientaion)를 가지는 규소강 스트립 및 시이트의 제조방법 | |
FR2496706A1 (fr) | Procede de fabrication d'acier au silicium oriente | |
FR2511046A1 (fr) | Procede pour la production de tole ou de bande en acier electromagnetique a grain oriente et tole ou bande ainsi obtenue | |
BE897817A (fr) | Procede de production de toles d'acier electrique a grains orientes et toles ainsi obtenues | |
FR2472020A1 (fr) | Procede de chauffage d'une brame d'acier de coulee continue pour la production de toles d'acier au silicium a grains orientes | |
US7736444B1 (en) | Method and system for manufacturing electrical silicon steel | |
JPH075379U (ja) | 解凍装置 | |
JPH0713268B2 (ja) | 連続鋳造一方向性電磁鋼スラブの熱間圧延方法 | |
JPS61143524A (ja) | 薄板状鋳片の製造方法 | |
JPH03146646A (ja) | りん青銅合金の熱間圧延方法 | |
JPH0430458B2 (de) | ||
JPH0124207B2 (de) | ||
BE555766A (de) | ||
JPH02263927A (ja) | 方位制御鋼帯の製造方法 | |
JPH0366455A (ja) | 薄肉鋳片の連続鋳造装置用冷却ドラム | |
JPH01230712A (ja) | 加工用薄鋼板の一貫製造法 |
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 |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE |
|
17P | Request for examination filed |
Effective date: 19930812 |
|
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 |
|
17Q | First examination report despatched |
Effective date: 19960401 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: THYSSEN STAHL AKTIENGESELLSCHAFT Owner name: USINOR SACILOR SOCIETE ANONYME |
|
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 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE |
|
REF | Corresponds to: |
Ref document number: 148175 Country of ref document: AT Date of ref document: 19970215 Kind code of ref document: T |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
ITF | It: translation for a ep patent filed |
Owner name: BUGNION S.P.A. |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19970203 |
|
REF | Corresponds to: |
Ref document number: 69216994 Country of ref document: DE Date of ref document: 19970306 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: 71693 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2099233 Country of ref document: ES Kind code of ref document: T3 |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: SC4A Free format text: AVAILABILITY OF NATIONAL TRANSLATION Effective date: 19970226 |
|
REG | Reference to a national code |
Ref country code: GR Ref legal event code: FG4A Free format text: 3023079 |
|
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 | ||
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TQ Ref country code: FR Ref legal event code: CD |
|
BECH | Be: change of holder |
Free format text: 19991116 S.A. *UGO;*THYSSEN STAHL A.G. |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: PD4A Free format text: USINOR FR Effective date: 20000216 Ref country code: PT Ref legal event code: PC4A Free format text: UGO, SOCIETE ANONYME FR Effective date: 20000216 |
|
NLS | Nl: assignments of ep-patents |
Owner name: THYSSEN STAHL AKTIENGESELLSCHAFT;UGO |
|
NLT1 | Nl: modifications of names registered in virtue of documents presented to the patent office pursuant to art. 16 a, paragraph 1 |
Owner name: THYSSEN STAHL AKTIENGESELLSCHAFT;USINOR |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PUEA Free format text: THYSSEN STAHL AKTIENGESELLSCHAFT;USINOR TRANSFER- THYSSEN STAHL AKTIENGESELLSCHAFT;UGO Ref country code: CH Ref legal event code: PFA Free format text: USINOR SACILOR SOCIETE ANONYME;THYSSEN STAHL AKTIENGESELLSCHAFT TRANSFER- THYSSEN STAHL AKTIENGESELLSCHAFT;USINOR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DK Payment date: 20070918 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IE Payment date: 20070927 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20070917 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20070919 Year of fee payment: 16 Ref country code: NL Payment date: 20070618 Year of fee payment: 16 Ref country code: LU Payment date: 20071119 Year of fee payment: 16 Ref country code: ES Payment date: 20071017 Year of fee payment: 16 Ref country code: DE Payment date: 20071010 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20070917 Year of fee payment: 16 Ref country code: IT Payment date: 20071020 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20071105 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20071016 Year of fee payment: 16 Ref country code: FR Payment date: 20071016 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GR Payment date: 20070928 Year of fee payment: 16 |
|
BERE | Be: lapsed |
Owner name: *THYSSEN STAHL A.G. Effective date: 20081031 Owner name: S.A. *UGO Effective date: 20081031 |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: MM4A Free format text: LAPSE DUE TO NON-PAYMENT OF FEES Effective date: 20090427 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |
|
EUG | Se: european patent has lapsed | ||
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20081026 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20090501 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20090630 |
|
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: 20090501 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090427 Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081026 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090501 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081026 |
|
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: 20081031 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081031 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081027 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081031 Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081031 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081031 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090505 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081026 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: PT Payment date: 20070914 Year of fee payment: 16 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20081027 |
|
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 NON-PAYMENT OF DUE FEES Effective date: 20081027 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081026 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081027 |