EP1192287B1 - Verfahren zum herstellen von nicht kornorientiertem elektroblech - Google Patents
Verfahren zum herstellen von nicht kornorientiertem elektroblech Download PDFInfo
- Publication number
- EP1192287B1 EP1192287B1 EP00918861A EP00918861A EP1192287B1 EP 1192287 B1 EP1192287 B1 EP 1192287B1 EP 00918861 A EP00918861 A EP 00918861A EP 00918861 A EP00918861 A EP 00918861A EP 1192287 B1 EP1192287 B1 EP 1192287B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- rolling
- hot
- annealing
- ferrite
- 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
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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
- C21D8/1244—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
- C21D8/1261—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 following hot 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- 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
- C21D8/1222—Hot 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
- C21D8/1216—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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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 invention relates to a method for producing not grain-oriented electrical sheet, in which from a made of a steel material, such as cast Slabs, bands, curtains or thin slabs, a Hot strip is made, the electric sheet a low turnover loss and a high turnover Polarization and good mechanical properties has.
- a steel material such as cast Slabs, bands, curtains or thin slabs
- a Hot strip is made, the electric sheet a low turnover loss and a high turnover Polarization and good mechanical properties has.
- Such non-grain oriented electrical sheets are mainly used as nuclear material in electrical Machines, such as motors and generators, with rotating magnetic flux direction used.
- non-grain oriented electrical sheet are here under the DIN EN 10106 ("final annealed Electrical sheet ”) and DIN EN 10165 (" not final annealed Electrical sheet ”) falling electric sheets understood. In addition, also become more anisotropic varieties as long as they are not grain-oriented Electric sheets apply.
- Non-grain oriented Electrical sheet metal not only affects Non-grain oriented electrical sheets with high losses (P1.5 ⁇ 5 - 6 W / kg), but also sheets with medium (3.5 W / kg ⁇ P1.5 ⁇ 5.5 W / kg) and low losses (P1.5 ⁇ 3.5). Therefore one strives, the entire spectrum the weak, medium and highly silicated Electrotechnical steels in terms of its to improve magnetic polarization values.
- the object of the invention is a inexpensive way to produce electrical sheets indicate with improved properties.
- a method for producing non-grain oriented electrical steel in which from a starting material, such as cast slabs, strips or thin slabs, made of a steel with (in wt .-%) 0.001 - 0.05% C, ⁇ 1 , 5% Si, ⁇ 0.4% Al, with Si + 2 Al ⁇ 1.7%, 0.1-1.2% Mn, optionally up to a total of 1.5% of alloying additives, such as P, Sn, Sb, Zr, V, Ti, N, Ni, Co, Nb and / or B, and the remainder being iron and conventional accompanying elements, a hot strip is produced by directing the starting material directly from the casting heat or after a previous reheating to at least 1000 ° C and at most 1180 ° C reheating temperature hot rolled in several forming passes and then coiled, wherein during the hot rolling at least the first forming pass in Austenit with at least one further forming pass in the two-phase mixing area austenite / ferrite is
- the magnetic Properties of an electrical sheet by deformation during the individual in the course of hot rolling continuous forming passes depending on respective structural state influenced.
- Crucial part has thereby the rolling in Two-phase mixed area, whereas the proportion of deformation should be as low as possible in the ferrite region.
- the inventive method is therefore particularly for the processing of such Fe-Si alloys suitable, which is a pronounced two-phase mixed region between have the austenite and the ferrite region.
- the hot rolling according to the invention is usually in one formed of several rolling stands Finishing roll completed.
- those traversed in the austenitic area serve Umformstiche to, the thickness of the hot strip before the Start of rolling in the two-phase mixed area so to adjust that during the im Two-phase mixing zone rolling ("Mixing rollers") desired overall shape change safely is reached.
- the mixing rolls also include at least one forming pass. However, preferably several forming passes in the mixed area austenite / ferrite go through to those required in this mixing rollers Overall shape change of at least 35% sure to reach and so the desired attitude of the To obtain hot strip microstructure.
- total change in shape ⁇ h is understood here to mean the ratio of the decrease in thickness during rolling in the respective phase region to the thickness of the strip when entering the relevant phase region.
- a hot strip produced according to the invention has, for example, a thickness h 0 after rolling in the austenite region. In the course of the subsequent rolling in the two-phase mixing zone, the thickness of the hot strip is reduced to h 1 .
- the total deformation ⁇ h during rolling in the two-phase mixed area austenite / ferrite should reach at least 35% in order to set the desired magnetic and technological properties favorable state of the hot-rolled strip in terms of grain size, texture and precipitates or prepare for subsequent processing steps.
- Optimal processing results can be achieved if the total deformation in the biphasic mixed area austenite / ferrite is limited to a maximum of 60%.
- the inventive method allows by a both in terms of temperature control as also with regard to the staggering of the transformations optimized rolling strategy in combination with a suitably selected reel temperature the most cost-effective Production of a high-quality electrical steel material.
- An advantageous embodiment of the invention is characterized in that the hot strip is finished rolled after forming in the austenite exclusively in the two-phase mixed area austenite / ferrite.
- the total change in shape ⁇ h achieved during rolling in the two-phase mixed region austenite / ferrite should amount to at least 50%.
- rolling in the ferrite state of the hot strip is completely avoided.
- tapes made from Fe-Si steels which have a pronounced two-phase mixed region of austenite / ferrite in the transition from austenite to ferrite. This can be avoided by a suitable choice of the ratio of deformation and forming rate, ie utilization of the heat generated during the forming, an optimal temperature control in terms of avoiding cooling of the rolling stock and thus a complete conversion into ferrite.
- At least one forming pass in the ferrite region is carried out following the rolling in the two-phase mixed region austenite / ferrite.
- the total deformation ⁇ h achieved during rolling in the ferrite region should be at least 10% and at most 33%.
- the rolling in the ferrite is limited to a minimum, so that the center of gravity of the deformation is unchanged in the mixed area austenite / ferrite despite the final rolling in the ferrite.
- the Hot strip is already softened in the coil, with his Characteristics determining characteristics, such as grain size, Texture and excretions are positively affected.
- Such an "in-line" running Annealing of the coiled at high temperature, in the coil not substantially cooled hot strip can a otherwise necessary Completely replace hot band bake annealing. Let it be Annealed hot strips with particularly good magnetic and technological properties produce. The required time and Energy expenditure is considerably lower than with the conventionally for improving the properties hot strip annealing performed by electrical steel.
- the hot strip after rolling in the finishing scale at a reel temperature of less than 600 ° C, in particular less than 550 ° C, reeled.
- the reeling at these temperatures results in the concerned Alloys to a solidified hot strip state.
- At least one of the last Forming passes in the ferrite area with lubrication hot rolled.
- hot rolling with lubrication occur on the one hand lower shear deformations, so that the rolled Band in the result a more homogeneous structure over the Cross section receives.
- the Lubrication reduces the rolling forces, so that over the each rolling pass a higher reduction in thickness possible is. Therefore it can, depending on the desired Characteristics of the electric sheet to be produced, be advantageous if all in the ferrite occurring forming passes with a rolling lubrication be performed.
- the hot strip after reeling and Cooling additionally at an annealing temperature of annealed at least 740 ° C.
- This glow can be in the Hood furnace or in a continuous furnace
- Thin slabs or cast strips when cast as a starting material Thin slabs or cast strips are used, can produce hot strips whose thickness ⁇ 1.5 mm is.
- the production of high quality Bands can be characterized in this context accomplish that the cast starting material in a Cast rolling mill has been produced and coming from this is passed directly into the rolling mill.
- Hot rolled strips produced according to the invention have such good properties Characteristics that they are suitable for a variety of Use applications directly as electrical sheets let, without the need for another cold rolling requires one about a smoothing or a passing going out cold deformation is made. Therefore there is a preferred embodiment of the invention in that the hot strip is made up and as Electrical sheet is delivered.
- Hot strip is processed, especially good magnetic Properties can be achieved when hot rolling in Mixed austenite / ferrite is terminated. It has shown that in particular so under avoidance of the Ferrit capablees hot rolled hot strips suitable are without further deformation in the course of a Cold rolling to be delivered to the end user.
- the magnetic Characteristics of the according to the invention produced hot-rolled Bandes be improved by the fact that the stained Hot strip at a degree of deformation of more than 3 to no more than 15% temper rolling. This too Reworking does not lead to typical thickness reduction, which would be comparable to the typical cold rolling achieved because of the achieved high degrees of deformation Change in strip thickness. Rather, additional Deformation energy introduced into the band, which a positive influence on the later processability of the Dressing rolled strip has.
- the invention delivered as a hot strip Electrical sheet can in the usual way before his Assembly and delivery at one Annealing temperature> 740 ° C final annealing. Becomes on the other hand, the final annealing was carried out at the processor, so can a non-annealed electric hot strip for be provided by the hot strip before his Assembly and delivery at annealing temperatures > 650 ° C recrystallizing to a non-annealed electrical steel is annealed.
- the hot strip produced in accordance with the invention is but also because of its mechanical properties particularly suitable, in a conventional manner einoder to be cold-rolled in several stages to a final thickness. If the cold rolling is carried out in several stages, should follow at least one of the cold rolling stages an intermediate annealing done to the good mechanical Maintain properties of the band.
- a "fully-finished" -Ebandroband produced be then joins the cold rolling Final annealing at an annealing temperature, which preferably> 740 ° C.
- Cold-rolled electrical steel produced according to the invention is excellent cutting and punching and is suitable as such, especially to components such as Slats or blanks to be processed.
- components such as Slats or blanks to be processed.
- the final annealing of the cold-rolled electric sheet preferably in one decarburizing atmosphere.
- the invention is based on Embodiments explained in more detail.
- J2500 refers to the following the magnetic polarization at magnetic Field strengths of 2500 A / m, 5000 A / m or 10000 A / m.
- P 1.0 or P 1.5 is the Loss of magnetization at a polarization of 1.0 T or 1.5 T and a frequency of 50 Hz understood.
- the Finishing roll is at least the first forming pass exclusively in Austenitic area.
- Table 2 shows the magnetic properties J 2500 , J 5000 , J 10000 , P 1.0 and P 1.5 for two electrical sheets B1, B2 produced from steels A and B, respectively.
- the respective hot-rolled strips intended for the production of the electrical sheets B1, B2 have been rolled to completion in the austenitic area at a total degree of deformation ⁇ h of 66% in the two-phase mixed area austenite / ferrite.
- the rolled hot strips were then rewound at a reel temperature of 750 ° C. Immediately thereafter, the coiled hot strips were cooled and fed to further processing.
- Table 3 shows the magnetic properties J 2500 , J 5000 , J 10000 , P 1.0 and P 1.5 for electrical sheets B3, B4, B5.
- the sheet B3 has been produced using the steel A, the sheet B4 using the steel B and the sheet B5 using the steel C.
- the hot strips intended for the production of the electrical steel sheets B3, B4, B5 have also been converted exclusively in the austenite / ferrite two-phase mixed region after the transformation in the austenite region.
- the total conversion ⁇ h achieved during rolling in the mixing area was 66%. Subsequently, the hot strips were rewound at a temperature of 750 ° C.
- Table 4 shows the magnetic properties J 2500 , J 5000 , J 10000 , P 1.0 and P 1.5 for electrical sheets B6, B7, B8, which, in the order given, are also based on steels A, B and C have been generated.
- the hot strips intended for the production of the electric sheets B6, B7, B8 have been formed after the transformation in the austenite area in the two-phase mixed area austenite / ferrite.
- the total conversion ⁇ h achieved in the two-phase mixed area was 50%.
- the hot-rolled strip has undergone several forming passes in the ferrite area.
- the total conversion ⁇ h achieved in the ferrite region was less than 30%.
- the thus finished rolled hot strip was coiled at a temperature of 750 ° C.
- Table 5 shows the magnetic properties J 2500 , J 5000 , J 10000 , P 1.0 and P 1.5 for electrical sheets B9, B10, B11.
- the sheet B9 has been produced using the steel A, the sheet B10 using the steel B and the sheet B11 using the steel C.
- the hot strips intended for the production of the electrical steel sheets B9, B10, B11 have been subjected to the same transformations in the finishing roll scale as the strips intended for the production of the metal sheets B6, B7, B8.
- the thus finished rolled hot strip was coiled at a temperature of 750 ° C.
- Tables 8a-8c show the magnetic properties J 2500 , J 5000 , J 10000 , P 1.0 and P 1.5 for the three electrical sheets C1-C3 and D1-D3, respectively, produced from steels C and D, respectively ,
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- Crystallography & Structural Chemistry (AREA)
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- Manufacturing & Machinery (AREA)
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- Preparation Of Compounds By Using Micro-Organisms (AREA)
Description
Stahl | C | Si | Al | Mn |
A | 0,008 | 0,1 | 0,12 | 0,34 |
B | 0,008 | 0,33 | 0,25 | 0,81 |
C | 0,007 | 1,19 | 0,13 | 0,23 |
Blech | J2500 [T] | J5000 [T] | J10000 [T] | P1,0 [W/kg] | P1,5 [W/kg] |
B1 | 1,739 | 1,813 | 1,9091 | 3,594 | 7,130 |
B2 | 1,724 | 1,802 | 1,896 | 3,002 | 5,959 |
Blech | J2500 [T] | J5000 [T] | J10000 [T] | P1,0 [W/kg] | P1,5 [W/kg] |
B3 | 1,755 | 1,828 | 1,920 | 3,258 | 6,522 |
B4 | 1,737 | 1,812 | 1,909 | 3,075 | 6,101 |
B5 | 1,689 | 1,765 | 1,859 | 2,596 | 5,304 |
Blech | J2500 [T] | J5000 [T] | J10000 [T] | P1,0 [W/kg] | P1,5 [W/kg] |
B6 | 1,748 | 1,822 | 1,916 | 3,564 | 7,121 |
B7 | 1,721 | 1,797 | 1,893 | 2,935 | 5,868 |
B8 | 1,709 | 1,791 | 1,884 | 2,630 | 5,246 |
Blech | J2500 [T] | J5000 [T] | J10000 [T] | P1,0 [W/kg] | P1,5 [W/kg] |
B9 | 1,746 | 1,819 | 1,914 | 3,305 | 6,657 |
B10 | 1,731 | 1,805 | 1,901 | 2,909 | 5,811 |
B11 | 1,690 | 1,765 | 1,858 | 2,587 | 5,304 |
Blech | J2500 [T] | J5000 [T] | J10000 [T] | P1,0 [W/kg] | P1,5 [W/kg] |
B12 | 1,724 | 1,800 | 1,894 | 2,577 | 5,105 |
Stahl | C | Si | Al | Mn |
C | 0,008 | 0,10 | 0,12 | 0,34 |
D | 0,007 | 1,19 | 0,13 | 0,23 |
Blech | J2500 [T] | J5000 [T] | J10000 [T] | P1,0 [W/kg] | P1,5 [W/kg] |
C1 | 1,646 | 1,729 | 1,522 | 5,941 | 13,276 |
D1 | 1,642 | 1,716 | 1,548 | 4,095 | 9,647 |
Blech | J2500 [T] | J5000 [T] | J10000 [T] | P1,0 [W/kg] | P1,5 [W/kg] |
C2 | 1,661 | 1,735 | 1,577 | 5,409 | 13,285 |
D2 | 1,621 | 1,699 | 1,535 | 3,716 | 8,776 |
Blech | J2500 [T] | J5000 [T] | J10000 [T] | P1,0 [W/kg] | P1,5 [W/kg] |
C3 | 1,642 | 1,716 | 1,548 | 4,095 | 9,647 |
D3 | 1,608 | 1,686 | 1,529 | 3,023 | 7,447 |
Claims (27)
- Verfahren zum Herstellen von nicht kornorientiertem Elektroblech, bei dem aus einem Vormaterial, wie gegossenen Brammen, Bändern, Vorbändern oder Dünnbrammen, das aus einem Stahl mit (in Gewichts-%)C: 0,001 - 0,05 %Si: ≤ 1,5 %Al: ≤ 0,4 %Mn: 0,1 - 1,2 %
als Rest Eisen sowie üblichen Begleitelementen
hergestellt ist, ein Warmband erzeugt wird, indem das Vormaterial direkt aus der Gießhitze oder nach einem vorhergehenden Wiedererwärmen auf eine mindestens 1000 °C und höchstens 1180 °C betragende Wiedererwärmungstemperatur in mehreren Umformstichen warmgewalzt und anschließend gehaspelt wird, wobei während des Warmwalzens mindestens der erste Umformstich im Austenitgebiet und mindestens ein weiterer Umformstich im Zweiphasenmischgebiet Austenit / Ferrit durchgeführt wird und wobei während des Walzens im Zweiphasenmischgebiet eine Gesamtformänderung εh von mindestens 35 % erreicht wird. - Verfahren nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Gesamtformänderung εh höchstens 60 % beträgt.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Warmband nach der Umformung im Austenitgebiet ausschließlich im Zweiphasenmischgebiet Austenit / Ferrit fertig gewalzt wird.
- Verfahren nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die während des Walzens im Zweiphasenmischgebiet Austenit / Ferrit erreichte Gesamtformänderung εh mindestens 50 % beträgt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß im Anschluß an das Walzen im Zweiphasenmischgebiet Austenit / Ferrit mindestens ein Umformstich im Ferritgebiet durchgeführt wird.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die während des Walzens im Ferritgebiet erreichte Gesamtformänderung εh mindestens 10 % und höchstens 33 % beträgt.
- Verfahren nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Haspeltemperatur mindestens 700 °C beträgt.
- Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß das gehaspelte Warmband aus der Coilhitze einer direkten Glühung unterzogen wird und d a ß die Glühzeit bei einer Glühtemperatur oberhalb 700 °C mindestens 15 Minuten beträgt.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß der Stahl einen Si-Gehalt von mindestens 0,7 Gewichts-% aufweist.
- Verfahren nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Haspeltemperatur weniger als 600 °C, insbesondere weniger als 550 °C, beträgt.
- Verfahren nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß das Warmband in unmittelbarem Anschluß an das Haspeln im Coil beschleunigt abgekühlt wird.
- Verfahren nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß während des Warmwalzens im Ferritgebiet mindestens ein Umformstich mit Schmierung durchgeführt wird.
- Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß alle Umformstiche im Ferritgebiet mit einer Walzenschmierung durchgeführt werden.
- Verfahren nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß das Warmband nach dem Haspeln bei einer Glühtemperatur von mindestens 740 °C geglüht wird.
- Verfahren nach Anspruch 14, dadurch gekennzeichnet, daß das Glühen des zu einem Coil gehaspelten Warmbands im Haubenofen durchgeführt wird.
- Verfahren nach Anspruch 14, dadurch gekennzeichnet, daß das Glühen im Durchlaufofen durchgeführt wird.
- Verfahren nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Dicke des Warmbandes ≤ 1,5 mm ist.
- Verfahren nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß das Warmband konfektioniert und als Elektroblech ausgeliefert wird.
- Verfahren nach Anspruch 18, dadurch gekennzeichnet, daß das Warmband vor seiner Konfektionierung und Auslieferung bei einem Umformgrad von ≤ 3 % glattgewalzt wird.
- Verfahren nach Anspruch 18, dadurch gekennzeichnet, daß das Warmband vor seiner Konfektionierung und Auslieferung bei einem Umformgrad von > 3 - 15 % dressiergewalzt wird.
- Verfahren nach einem der Ansprüche 18 bis 20, dadurch gekennzeichnet, daß das Warmband vor seiner Konfektionierung und Auslieferung bei einer Glühtemperatur > 740 °C schlußgeglüht wird.
- Verfahren nach einem der Ansprüche 18 bis 20, dadurch gekennzeichnet, daß das Warmband vor seiner Konfektionierung und Auslieferung bei Glühtemperaturen > 650 °C rekristallisierend zu einem nichtschlußgeglühten Elektroband geglüht wird.
- Verfahren nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, daß das Warmband ein- oder mehrstufig auf eine Enddicke kaltgewalzt wird.
- Verfahren nach Anspruch 23, dadurch gekennzeichnet, daß das Kaltwalzen mehrstufig durchgeführt wird und d a β im Anschluß an mindestens eine der Kaltwalzstufen ein Zwischenglühen erfolgt.
- Verfahren nach einem der Ansprüche 23 oder 24, dadurch gekennzeichnet, daß das Kaltband im Anschluß an das Kaltwalzen bei einer Glühtemperatur > 740 °C schlußgeglüht wird.
- Verfahren nach einem der Ansprüche 23 oder 24, dadurch gekennzeichnet, daß das Kaltband nach dem Kaltwalzen in einem Haubenoder Durchlaufofen bei Glühtemperaturen > 650 °C rekristallisierend zu einem nicht schlußgeglühten Elektroband geglüht und im Anschluß daran gerichtet und nachgewalzt wird.
- Verfahren nach einem der Ansprüche 21, 22, 25 oder 26, dadurch gekennzeichnet, daß die Glühung in einer entkohlenden Atmosphäre durchgeführt wird.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI200030038T SI1192287T1 (en) | 1999-07-05 | 2000-04-07 | Method for producing non-grain oriented electric sheet steel |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19930519 | 1999-07-05 | ||
DE19930519A DE19930519C1 (de) | 1999-07-05 | 1999-07-05 | Verfahren zum Herstellen von nicht kornorientiertem Elektroblech |
PCT/EP2000/003125 WO2001002610A1 (de) | 1999-07-05 | 2000-04-07 | Verfahren zum herstellen von nicht kornorientiertem elektroblech |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1192287A1 EP1192287A1 (de) | 2002-04-03 |
EP1192287B1 true EP1192287B1 (de) | 2003-01-08 |
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Application Number | Title | Priority Date | Filing Date |
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EP00918861A Expired - Lifetime EP1192287B1 (de) | 1999-07-05 | 2000-04-07 | Verfahren zum herstellen von nicht kornorientiertem elektroblech |
Country Status (12)
Country | Link |
---|---|
US (1) | US6773514B1 (de) |
EP (1) | EP1192287B1 (de) |
JP (2) | JP2003504508A (de) |
KR (1) | KR100707503B1 (de) |
AT (1) | ATE230803T1 (de) |
AU (1) | AU3965500A (de) |
BR (1) | BR0012227A (de) |
DE (2) | DE19930519C1 (de) |
ES (1) | ES2189751T3 (de) |
MX (1) | MXPA02000156A (de) |
PL (1) | PL194908B1 (de) |
WO (1) | WO2001002610A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4303431B2 (ja) * | 2000-12-11 | 2009-07-29 | 新日本製鐵株式会社 | 超高磁束密度無方向性電磁鋼板およびその製造方法 |
DE10153234A1 (de) * | 2001-10-31 | 2003-05-22 | Thyssenkrupp Stahl Ag | Für die Herstellung von nichtkornorientiertem Elektroblech bestimmtes, warmgewalztes Stahlband und Verfahren zu seiner Herstellung |
DE10221793C1 (de) * | 2002-05-15 | 2003-12-04 | Thyssenkrupp Electrical Steel Ebg Gmbh | Nichtkornorientiertes Elektroband oder -blech und Verfahren zu seiner Herstellung |
DE102005063058B3 (de) * | 2005-12-29 | 2007-05-24 | Thyssenkrupp Nirosta Gmbh | Verfahren zum Herstellen eines Kaltbands mit ferritischem Gefüge |
US8333923B2 (en) * | 2007-02-28 | 2012-12-18 | Caterpillar Inc. | High strength gray cast iron |
CN102839266B (zh) * | 2012-09-21 | 2015-07-22 | 马钢(集团)控股有限公司 | 屈服强度为250MPa级冷轧磁极钢的生产方法 |
WO2016063098A1 (en) * | 2014-10-20 | 2016-04-28 | Arcelormittal | Method of production of tin containing non grain-oriented silicon steel sheet, steel sheet obtained and use thereof |
WO2016079565A1 (en) | 2014-11-18 | 2016-05-26 | Arcelormittal | Method for manufacturing a high strength steel product and steel product thereby obtained |
JP6048699B2 (ja) | 2015-02-18 | 2016-12-21 | Jfeスチール株式会社 | 無方向性電磁鋼板とその製造方法ならびにモータコア |
CN107849632A (zh) * | 2015-08-04 | 2018-03-27 | 杰富意钢铁株式会社 | 磁特性优异的无方向性电磁钢板的制造方法 |
KR102175064B1 (ko) * | 2015-12-23 | 2020-11-05 | 주식회사 포스코 | 무방향성 전기강판 및 그 제조방법 |
KR102109241B1 (ko) * | 2017-12-26 | 2020-05-11 | 주식회사 포스코 | 형상 품질이 우수한 무방향성 전기강판 및 그 제조방법 |
KR102045655B1 (ko) * | 2017-12-26 | 2019-12-05 | 주식회사 포스코 | 자기적 특성 및 형상이 우수한 박물 무방향성 전기강판 및 그 제조방법 |
CN113481435B (zh) * | 2021-06-29 | 2022-09-16 | 鞍钢股份有限公司 | 一种900MPa级热轧复相钢及其生产方法 |
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US4177091A (en) * | 1978-08-16 | 1979-12-04 | General Electric Company | Method of producing silicon-iron sheet material, and product |
JP2501219B2 (ja) * | 1987-12-25 | 1996-05-29 | 川崎製鉄株式会社 | 無方向性電磁鋼板の製造方法 |
JPH0723509B2 (ja) * | 1988-10-13 | 1995-03-15 | 新日本製鐵株式会社 | 優れた鉄損特性を有する無方向性電磁鋼板の製造方法 |
FR2665181B1 (fr) * | 1990-07-30 | 1994-05-27 | Ugine Aciers | Procede de fabrication de tole d'acier magnetique a grains non orientes et tole obtenue par ce procede. |
JP2700505B2 (ja) * | 1991-10-22 | 1998-01-21 | ポハング アイアン アンド スチール カンパニイ リミテッド | 磁気特性の優れた無方向性電気鋼板およびその製造方法 |
JPH05156359A (ja) * | 1991-12-06 | 1993-06-22 | Sumitomo Metal Ind Ltd | 小型トランス用電磁鋼板の製造方法 |
JPH05287382A (ja) * | 1992-04-09 | 1993-11-02 | Nippon Steel Corp | 全周特性の優れた無方向性電磁鋼板の製造法 |
JP3375998B2 (ja) * | 1993-01-26 | 2003-02-10 | 川崎製鉄株式会社 | 無方向性電磁鋼板の製造方法 |
JP3331401B2 (ja) * | 1993-03-31 | 2002-10-07 | 新日本製鐵株式会社 | 全周磁気特性の優れた無方向性電磁鋼板の製造方法 |
JP3348802B2 (ja) * | 1993-06-30 | 2002-11-20 | 新日本製鐵株式会社 | 磁束密度が高く、鉄損の低い無方向性電磁鋼板の製造方法 |
US5803989A (en) | 1994-06-24 | 1998-09-08 | Nippon Steel Corporation | Process for producing non-oriented electrical steel sheet having high magnetic flux density and low iron loss |
JPH1150209A (ja) * | 1997-08-05 | 1999-02-23 | Kawasaki Steel Corp | 無方向性電磁鋼熱延板 |
KR100340503B1 (ko) * | 1997-10-24 | 2002-07-18 | 이구택 | 무방향성전기강판의제조방법 |
DE19807122C2 (de) * | 1998-02-20 | 2000-03-23 | Thyssenkrupp Stahl Ag | Verfahren zur Herstellung von nichtkornorientiertem Elektroblech |
-
1999
- 1999-07-05 DE DE19930519A patent/DE19930519C1/de not_active Expired - Fee Related
-
2000
- 2000-04-07 BR BR0012227-0A patent/BR0012227A/pt not_active Application Discontinuation
- 2000-04-07 WO PCT/EP2000/003125 patent/WO2001002610A1/de active IP Right Grant
- 2000-04-07 ES ES00918861T patent/ES2189751T3/es not_active Expired - Lifetime
- 2000-04-07 AT AT00918861T patent/ATE230803T1/de active
- 2000-04-07 AU AU39655/00A patent/AU3965500A/en not_active Abandoned
- 2000-04-07 KR KR1020027000106A patent/KR100707503B1/ko active IP Right Grant
- 2000-04-07 JP JP2001508381A patent/JP2003504508A/ja active Pending
- 2000-04-07 PL PL353181A patent/PL194908B1/pl unknown
- 2000-04-07 MX MXPA02000156A patent/MXPA02000156A/es not_active Application Discontinuation
- 2000-04-07 EP EP00918861A patent/EP1192287B1/de not_active Expired - Lifetime
- 2000-04-07 DE DE50001064T patent/DE50001064D1/de not_active Expired - Lifetime
- 2000-04-07 US US10/030,259 patent/US6773514B1/en not_active Expired - Lifetime
-
2009
- 2009-02-04 JP JP2009024285A patent/JP5529418B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1192287A1 (de) | 2002-04-03 |
DE50001064D1 (de) | 2003-02-13 |
KR20020035827A (ko) | 2002-05-15 |
PL194908B1 (pl) | 2007-07-31 |
WO2001002610A1 (de) | 2001-01-11 |
US6773514B1 (en) | 2004-08-10 |
JP2003504508A (ja) | 2003-02-04 |
KR100707503B1 (ko) | 2007-04-16 |
AU3965500A (en) | 2001-01-22 |
ES2189751T3 (es) | 2003-07-16 |
PL353181A1 (en) | 2003-11-03 |
ATE230803T1 (de) | 2003-01-15 |
DE19930519C1 (de) | 2000-09-14 |
MXPA02000156A (es) | 2002-07-30 |
BR0012227A (pt) | 2002-04-02 |
JP5529418B2 (ja) | 2014-06-25 |
JP2009149993A (ja) | 2009-07-09 |
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