DE1266334B - Process for straightening soft magnetic rolled products in the form of thin sheets - Google Patents

Process for straightening soft magnetic rolled products in the form of thin sheets

Info

Publication number
DE1266334B
DE1266334B DE1964C0034424 DEC0034424A DE1266334B DE 1266334 B DE1266334 B DE 1266334B DE 1964C0034424 DE1964C0034424 DE 1964C0034424 DE C0034424 A DEC0034424 A DE C0034424A DE 1266334 B DE1266334 B DE 1266334B
Authority
DE
Germany
Prior art keywords
straightening
sheets
soft magnetic
rolled products
thin sheets
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.)
Withdrawn
Application number
DE1964C0034424
Other languages
German (de)
Inventor
Jean-Auguste Demeaux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cie Des Ateliers & Forges de l
Original Assignee
Cie Des Ateliers & Forges de l
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cie Des Ateliers & Forges de l filed Critical Cie Des Ateliers & Forges de l
Publication of DE1266334B publication Critical patent/DE1266334B/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/16—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F9/00—Straining wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F9/00—Straining wire
    • B21F9/002—Straining wire to maintain tension in the wire, e.g. to pull the wire taut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F9/00—Straining wire
    • B21F9/007—Straining wire to induce a plastic deformation of the wire
    • 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
    • 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
    • C21D8/125—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 with application of tension

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnetism (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Laminated Bodies (AREA)

Description

BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY

DEUTSCHESGERMAN

PATENTAMTPATENT OFFICE

AUSLEGESCHRIFTEDITORIAL

Int. Cl.:Int. Cl .:

C21dC21d

Deutsche Kl.: 18 c-9/46 German class: 18 c -9/46

Nummer: 1266 334Number: 1266 334

Aktenzeichen: C 34424 VI a/18 cFile number: C 34424 VI a / 18 c

Anmeldetag: 20. November 1964 Filing date: November 20, 1964

Auslegetag: 18. April 1968Open date: April 18, 1968

Die Erfindung betrifft ein Verfahren zum Richten von in Form von dünnen Blechen vorliegenden weichmagnetischen Walzerzeugnissen durch eine in einem im Durchzie'hverfahren arbeitenden Rollenherdofen durchgeführte Wärmebehandlung, bei der die magnetischen Eigenschaften der Bleche nicht verändert werden.The invention relates to a method for straightening soft magnetic rolled products present in the form of thin sheets by one in one Heat treatment carried out in the roller hearth furnace operating through the pull-through process, in which the magnetic Properties of the sheets are not changed.

Es ist bekannt, daß zu Bunden gewickelte dünne Bleche, die einer im Ruhezustand erfolgten thermischen Behandlung unterzogen worden sind, mit gewissen Verformungen vorliegen und daß sich, wenn diese Bunde abgerollt werden, ein Erzeugnis mit einer erheblichen Restrundung ergibt, deren Radius grundsätzlich gleich dem Durchmesser der Aufwicklung vor dem Glühen ist.It is known that thin sheets wound into coils, the thermal Have undergone treatment, present with certain deformations and that if these bundles are unrolled, a product with a considerable residual rounding results, the radius of which is basically the same as the diameter of the winding before annealing.

Unter dünnen Blechen werden im Rahmen der Erfindung solche von einer Dicke von 1 mm und weniger verstanden.In the context of the invention, thin sheets are those with a thickness of 1 mm and less Understood.

In der Mehrzahl der Fälle ist das in dieser Weise erhaltene Erzeugnis von dem Verbraucher in diesem Zustand nicht verwendbar und muß deshalb gerichtet werden, wobei man unter »Richten« die vollständige Abwicklung des auf einen Bund aufgewickelten dünnen Bleches in eine Ebene versteht.In the majority of cases, the product obtained in this way is in the consumer State cannot be used and must therefore be judged, whereby under "judging" the complete Understand the development of the thin sheet metal wound on a bundle in one plane.

Dieses Ergebnis kann mittels verschiedenartiger Behandlungsmethoden, beispielsweise mechanisch (durch Hindurchlaufenlassen der Bleche durch mit Walzen ausgerüstete Planiervorrichtungen, abwechselndes Abwickeln und Aufrollen unter zweckmäßig gewählter Spannung, Kalt-Dressierwalzen), herbeigeführt werden.This result can be achieved by means of various treatment methods, for example mechanically (by letting the sheets pass through leveling devices equipped with rollers, alternately Unwinding and rolling up under appropriately selected tension, cold skin-pass rollers) will.

Diese Methoden können sich zur Behandlung von Erzeugnissen als brauchbar erweisen, bei welchen lediglich ihre mechanischen Eigenschaften von Bedeutung sind. Handelt es sich jedoch um Erzeugnisse für magnetische Verwendungszwecke (wie orientiertes oder vor allem nicht orientiertes Silizium und/oder Aluminium enthaltende Stahlbleche, überhaupt jede andere Art von Blechen für elektrische Verwendungszwecke), dann sind diese Behandlungsmethoden nicht anwendbar, weil sie gleichzeitig eine sehr starke Verschlechterung der magnetischen Eigenschaften (Wattverluste und Permeabilitätsverluste) herbeiführen.These methods may prove useful for treating articles where only their mechanical properties are important. However, if they are products for magnetic uses (such as oriented or especially non-oriented silicon and / or Steel sheets containing aluminum, in general any other type of sheet metal for electrical purposes), then these treatment methods are not applicable because they simultaneously cause a very severe deterioration the magnetic properties (watt losses and permeability losses).

Diese Verschlechterung der magnetischen Eigenschaften wird deutlich durch einen Vergleich der Eigenschaften von in flachem bzw. plattem Zustand behandelten Erzeugnissen und solchen, die zu Bunden aufgewickelt sind und dann gerichtet werden.This deterioration in magnetic properties is evident by comparing the Properties of products treated in the flat or flattened state and those that are to be bound are wound up and then straightened.

Aufgabe der Erfindung ist daher die Schaffung eines Richtverfahrens, welches sowohl in Form von aufgewickelten Bunden oder in Form von Flachblechen vorliegende weichmagnetische Walzerzeug-Verfahren zum Richten von in Form
von dünnen Blechen vorliegenden
weichmagnetischen WalzerzeugnissenThe object of the invention is therefore to create a straightening process which uses soft magnetic rolling processes for straightening in the form of coiled coils or flat sheets
of thin sheet metal present
soft magnetic rolled products

Anmelder:Applicant:

Compagnie des Ateliers & Forges de la Loire,Compagnie des Ateliers & Forges de la Loire,

St. Chamond-Firminy-St.-Etienne-Jacob Holtzer, ParisSt. Chamond-Firminy-St.-Etienne-Jacob Holtzer, Paris

Vertreter:Representative:

Dipl.-Ing. R. H. BahrDipl.-Ing. R. H. Bahr

und Dipl.-Phys. E. Betzier, Patentanwälte,and Dipl.-Phys. E. Betzier, patent attorneys,

4690 Herne, Freiligrathstr. 194690 Herne, Freiligrathstr. 19th

Als Erfinder benannt:Named as inventor:

Jean-Auguste Demeaux,Jean-Auguste Demeaux,

St-Chely d'Apcher, Lozere (Frankreich)St-Chely d'Apcher, Lozere (France)

Beanspruchte Priorität:Claimed priority:

Frankreich vom 22. November 1963 (954 670)France of November 22, 1963 (954 670)

nisse vollkommen planiert, ohne daß eine nachteilige Beeinträchtigung ihrer magnetischen Eigenschaften erfolgt.nits perfectly leveled without adversely affecting their magnetic properties he follows.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Bleche unter einer Zugspannung von 0,3 bis 3 kg/cm2 und einer Durchlaufzeit von 10 Sekunden bis 1 Minute durch den Ofen gezogen werden, in dem eine Temperatur von 650 bis 850° C aufrechterhalten wird.This object is achieved according to the invention in that the sheets are pulled through the furnace under a tensile stress of 0.3 to 3 kg / cm 2 and a cycle time of 10 seconds to 1 minute, in which a temperature of 650 to 850 ° C. is maintained .

Diese Bedingungen müssen so eingestellt werden, daß die sich ergebende Längung verhältnismäßig gering ist und zwischen 0,01 und 0,05% liegt.These conditions must be set so that the resulting elongation is relatively small and is between 0.01 and 0.05%.

Zum Beispiel werden bei Blechen von 0,35 mm Dicke durch Innehaltung der folgenden Bedingungen ausgezeichnete Ergebnisse erhalten:For example, in the case of sheets of 0.35 mm thick, by observing the following conditions get excellent results:

Temperatur 800° CTemperature 800 ° C

Ausgeübte Spannung 0,6 kg/cm2 Tension applied 0.6 kg / cm 2

Durchlaufzeit durch den Ofen .. 40 Sekunden
Längung größenordnungsmäßig 0,2%Passage time through the oven .. 40 seconds
Elongation of the order of 0.2%

Die vorteilhafte Wirkung des erfindungsgemäßen Verfahrens läßt sich feststellen, wenn man die magnetischen Eigenschaften eines Bleches, welches z. B. in Form eines von einem Bund vor der Wärme-The advantageous effect of the method according to the invention can be determined if the magnetic Properties of a sheet which z. B. in the form of a federal government

809 533/289809 533/289

behandlung heruntergeschnittenen Bleches gerichtet wurde, und diejenigen eines Bleches mißt, welches der Wärmebehandlung in zu einem Bund aufgewickelter Form unterworfen und erst dann nach dem erfindungsgemäßen Verfahrens gerichtet wurde.treatment of cut-off sheet, and that of a sheet measures which subjected to the heat treatment in a form wound into a bundle and only then after method according to the invention was directed.

Es ergibt sich keinerlei Unterschied hinsichtlich der magnetischen Eigenschaften der beiden Bleche.There is no difference whatsoever with regard to the magnetic properties of the two sheets.

Wird dagegen das Richtverfähren der in Bundform wärmebehandelten Blechprobe nicht erfindungsgemäß durchgeführt, so ergibt sich ein wesentlicher Unterschied in den magnetischen Eigenschaften im Verhältnis zu der in gerichtetem Zustand wärmebehandelten Blechprobe, der um so größer wird, je mehr das angewendete Verfahren von dem erfindungsgemäßen Verfahren abweicht.If, on the other hand, the straightening method of the sheet metal sample heat-treated in the form of a coil is not according to the invention carried out, there is a significant difference in the magnetic properties of the Relation to the sheet metal sample heat-treated in the straightened state, which becomes larger, the more the more the method used deviates from the method according to the invention.

Durch das erfindungsgemäße Verfahren verbilligt sich die Herstellung magnetischer Bleche, da sowohl der Materialverschnitt bei dem sonst zur Wärmebehandlung notwendigen Zuschnitt der Bleche zu Tafeln als auch der für diesen Zuschnitt notwendiger Arbeitsaufwand wegfallen.The inventive method makes the production of magnetic sheets cheaper, since both the material scrap in the sheet metal otherwise necessary for heat treatment Boards as well as the work required for this cut are omitted.

Claims (1)

Patentanspruch:Claim: Verfahren zum Richten von in Form von dünnen Blechen vorliegenden weichmagnetischen Walzerzeugnissen durch eine in einem im Durchziehverfahren arbeitenden Rollenherdofens durchgeführte Wärmebehandlung, bei der die magnetischen Eigenschaften der Bleche nicht verändert werden, dadurch gekennzeichnet, daß die Bleche unter einer Zugspannung von 0,3 bis 3 kg/cm2 und einer Durchlaufzeit von 10 Sekunden bis 1 Minute durch den Ofen gezogen werden, in dem eine Temperatur von 650 bis 850° C aufrechterhalten wird.Process for straightening soft magnetic rolled products in the form of thin sheets by means of a heat treatment carried out in a roller hearth furnace operating in the pull-through process, in which the magnetic properties of the sheets are not changed, characterized in that the sheets are subjected to a tensile stress of 0.3 to 3 kg / cm 2 and a cycle time of 10 seconds to 1 minute through the furnace, in which a temperature of 650 to 850 ° C is maintained. In Betracht gezogene Druckschriften:
Deutsche Patentschrift Nr. 890 804.Considered publications:
German patent specification No. 890 804. 809 539/289 4.68 © Bundesdruckerei Berlin809 539/289 4.68 © Bundesdruckerei Berlin
DE1964C0034424 1963-11-22 1964-11-20 Process for straightening soft magnetic rolled products in the form of thin sheets Withdrawn DE1266334B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR954670A FR1426093A (en) 1963-11-22 1963-11-22 Process for leveling magnetic products rolled in the form of thin sheets

Publications (1)

Publication Number Publication Date
DE1266334B true DE1266334B (en) 1968-04-18

Family

ID=8817172

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1964C0034424 Withdrawn DE1266334B (en) 1963-11-22 1964-11-20 Process for straightening soft magnetic rolled products in the form of thin sheets

Country Status (6)

Country Link
BE (1) BE656052A (en)
DE (1) DE1266334B (en)
ES (1) ES306148A1 (en)
FR (1) FR1426093A (en)
LU (1) LU47373A1 (en)
NL (1) NL6413519A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE890804C (en) * 1942-08-25 1953-09-21 Westfalenhuette Dortmund Ag Method and device for hardening and tempering metal strips and sheets

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE890804C (en) * 1942-08-25 1953-09-21 Westfalenhuette Dortmund Ag Method and device for hardening and tempering metal strips and sheets

Also Published As

Publication number Publication date
FR1426093A (en) 1966-01-28
NL6413519A (en) 1965-05-24
BE656052A (en) 1965-05-20
ES306148A1 (en) 1965-04-01
LU47373A1 (en) 1965-11-18

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