DE737555C - Process for the production of a coarse-grained, silicon-containing iron sheet, strip or wire with up to 5% silicon - Google Patents

Process for the production of a coarse-grained, silicon-containing iron sheet, strip or wire with up to 5% silicon

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Publication number
DE737555C
DE737555C DEH146415D DEH0146415D DE737555C DE 737555 C DE737555 C DE 737555C DE H146415 D DEH146415 D DE H146415D DE H0146415 D DEH0146415 D DE H0146415D DE 737555 C DE737555 C DE 737555C
Authority
DE
Germany
Prior art keywords
silicon
annealing
containing iron
grained
coarse
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
Application number
DEH146415D
Other languages
German (de)
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.)
Hoesch AG
Original Assignee
Hoesch AG
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 Hoesch AG filed Critical Hoesch AG
Priority to DEH146415D priority Critical patent/DE737555C/en
Application granted granted Critical
Publication of DE737555C publication Critical patent/DE737555C/en
Expired legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B3/02—Rolling special iron alloys, e.g. stainless steel
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/78—Combined heat-treatments not provided for above
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Power Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Soft Magnetic Materials (AREA)

Description

Verfahren zum Herstellen eines grobkörnigen, siliciumhaltigen Eisenbleches, -bandes oder -drahtes mit bis zu 5/o Silicium Es ist bekannt, für elektrische Zwecke bestimmte siliciumhaltige Eisenbleche, -bänder oder -drähte beim letzten Kaltverformungsstich kritisch zu verformen und anschließend bei einer solchem Temperatur zu glühen, daß das Korn eine starke Vergröberung erfährt.Process for the production of a coarse-grained, silicon-containing iron sheet, tape or wire with up to 5 / o silicon It is known for electrical purposes certain silicon-containing iron sheets, strips or wires in the last cold forming pass to deform critically and then to anneal at such a temperature that the grain experiences a strong coarsening.

Dieses Verfahren wird erfindungsgemäß dadurch verbessert, daß die siliciumhaltigen Eisenbleche, -bänder und -drähte -mit Siliciumgehalten bis 5% nach der dem Siliciumgehalt angepaßten kritischen Verformung einer Glühung unterzogen werden, die bei Siliciumgehalten -zwischen o,5 bis i 0/1o oberhalb von 85o° und bei Siliciumgehalten von 2 und mehr Prozent oberhalb von 95o° selbstverständlich immer noch im Rekristallisationsgebiet und nicht im Gammagebiet liegt. An diese Glühung schließt sich eine Nachglühung bei Temperaturen zwischen 7oo und 85o° an. Die Nachglühungstemperaturen richten sich gleichfalls nach dem Siliciumgehalt, und zwar in dem Sinne, daß für die niedrigen Siliciumgehalte der untere Bereich und für die höheren Siliciumgehatte der obere Bereich der genannten Temperaturspanne gewählt wird. Die Nachglühung kann unmittelbar im Anschluß an die erste Glühung vorgenommen werden. Es ist aber auch möglich, den erfindungsgemäß zu behandelnden Werkstoff zwischen beiden Glühungen erst bis auf die Raumtemperatur erkalten zu lassen und hung dauert ungefähr 3 Stunden, die Nachglühung Io Stunden. Die Glühung selbst erfolgt nach den angegebenen Vorschriften und in den gebräuchlichen Wärmöfen, Durchziehöfen oder auch Glühöfen.This process is improved according to the invention in that the silicon-containing iron sheets, strips and wires with silicon contents of up to 5% after the critical deformation adapted to the silicon content are subjected to an annealing which, with silicon contents between 0.5 and 10/10 above 85o ° and with silicon contents of 2 and more percent above 95o ° is of course still in the recrystallization area and not in the gamma area. This annealing is followed by an afterglow at temperatures between 700 and 85o °. The afterglow temperatures are also based on the silicon content, in the sense that the lower range is selected for the low silicon content and the upper range of the stated temperature range is selected for the higher silicon content. The afterglow can be carried out immediately after the first annealing. However, it is also possible to first allow the material to be treated according to the invention to cool down to room temperature between the two anneals and The afterglow lasts about 3 hours and the afterglow takes about 3 hours. The annealing itself takes place according to the specified regulations and in the usual heating furnaces, pull-through furnaces or annealing furnaces.

Mit dem erfindungsgemäßen Verfahren lassen sich die durch das bekannte- Verfahren erreichten elektrischen Werte und Eigenschaften bedeutend verbessern. Ein 2%iger Siliciumstahl ergibt bei kritischer Verformung und kritischer Glühung eine Maximalpermeabilität von Io ooo Gauß/Oersted. Wird dieser Werkstoff kritisch verformt, bei 98o° C geglüht und Io Stunden bei 8oo° C nachgeglüht, so erreicht die Maximalpermeabilität den Wert von 17 8oo Gauß/Oersted.With the method according to the invention, the known- Processes achieved significantly improve electrical values and properties. A 2% silicon steel yields critical deformation and critical annealing a maximum permeability of Io ooo Gauss / Oersted. This material becomes critical deformed, annealed at 98o ° C and post-annealed for 10 hours at 800 ° C, so achieved the maximum permeability is 17,8oo Gauss / Oersted.

Es ist ferner an sich bekannt, siliciumhaltigen Stahl zwischen 9oo und iIoo° C zu erhitzen, vorzugsweise schnell abkühlen zu lassen und dann wieder bis auf ungefähr 700 bis 85o° C zu erhitzen, um die elektrischen Eigenschaften dieses Stahles und ebenfalls die magnetischen- Eigenschaften zu verbessern. Dieses bekannte Verfahren sieht jedoch nicht die Vereinigung von der dem Siliciumgehalt angepaßten kritischen Verformung, ersten Glühung und Nachwarmbehandlung vor und gibt somit auch keine klare Regel zur Erzielung der gleichen vorteilhaften magnetischen Eigenschaften, wie dies mit dem erfindungsgemäßen Verfahren erfolgt. Wenn man einer üblichen Kaltverformung von ungefähr 3o% bei 98o- C glüht und Io Stunden bei 8oo° C nachglüht, so besitzt dieser Stahl nur eine - Maximalpermeabilität von nur 66oo Gauß/Oersted.It is also known per se to heat silicon-containing steel between 900 and 100 ° C., preferably to let it cool down quickly and then to heat it again to about 700 to 85 ° C. in order to improve the electrical properties of this steel and also the magnetic properties to enhance. However, this known method does not provide for the combination of the critical deformation adapted to the silicon content, first annealing and post-heating treatment and thus does not provide a clear rule for achieving the same advantageous magnetic properties as is done with the method according to the invention. If a usual cold deformation of about 30% anneals at 98oC and after-annealing for 10 hours at 800oC, this steel has only a maximum permeability of only 66oo Gauss / Oersted.

Claims (1)

PATENTANSPRUCH: Verfahren zum Herstellen eines grobkörnigen, siliciumhaltigen Eisenbleches, -bandes oder -drahtes mit bis zu 5010 Silicium durch kritisches Kaltverformen und kritisches Glühen, wobei die Glühtemperatur mit steigendem Siliciumgehalt ansteigt, dadurch gekennzeichnet, daß das Glühgut nach der kritischen Verformung bei Siliciumgehalten von o,5 bis I,o% oberhalb von 85o' und bei Siliciumgehalten von z und mehr Prozent oberhalb von 95o" geglüht wird und daß sich an diese Glühung ein Nachglühen bei Temperaturen zwischen 700 und 85o' anschließt.PATENT CLAIM: A method for producing a coarse-grained, silicon-containing iron sheet, strip or wire with up to 5010 silicon by critical cold forming and critical annealing, the annealing temperature increasing with increasing silicon content, characterized in that the annealing material after the critical deformation with silicon contents of o , 5 to 1.0% is annealed above 85o 'and with silicon contents of z and more percent above 95o "and that this annealing is followed by an afterglow at temperatures between 700 and 85o'.
DEH146415D 1936-02-01 1936-02-01 Process for the production of a coarse-grained, silicon-containing iron sheet, strip or wire with up to 5% silicon Expired DE737555C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH146415D DE737555C (en) 1936-02-01 1936-02-01 Process for the production of a coarse-grained, silicon-containing iron sheet, strip or wire with up to 5% silicon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH146415D DE737555C (en) 1936-02-01 1936-02-01 Process for the production of a coarse-grained, silicon-containing iron sheet, strip or wire with up to 5% silicon

Publications (1)

Publication Number Publication Date
DE737555C true DE737555C (en) 1943-07-19

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DEH146415D Expired DE737555C (en) 1936-02-01 1936-02-01 Process for the production of a coarse-grained, silicon-containing iron sheet, strip or wire with up to 5% silicon

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE968711C (en) * 1941-06-29 1958-03-20 Vacuumschmelze Ag Process for treating iron-silicon and iron-aluminum alloys
DE1259367B (en) * 1957-06-11 1968-01-25 Forsch Metallische Spezialwerk Process for the production of a magnetizable material with a rectangular hysteresis loop and preferably high initial permeability from Ni-Fe alloys
DE1272948B (en) * 1956-10-15 1968-07-18 Hans Eberhard Moebius Dipl Ing Process for the production of a distinctive cube layer in high-quality magnetizable strips and sheets made of alloys, which contain silicon as a main component and the usual impurities

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE968711C (en) * 1941-06-29 1958-03-20 Vacuumschmelze Ag Process for treating iron-silicon and iron-aluminum alloys
DE1272948B (en) * 1956-10-15 1968-07-18 Hans Eberhard Moebius Dipl Ing Process for the production of a distinctive cube layer in high-quality magnetizable strips and sheets made of alloys, which contain silicon as a main component and the usual impurities
DE1272948C2 (en) * 1956-10-15 1974-02-14 Hans Eberhard Moebius Dipl Ing Process for the production of a distinctive cube layer in high-quality magnetizable strips and sheets made of alloys which contain silicon as the main component and the usual impurities
DE1259367B (en) * 1957-06-11 1968-01-25 Forsch Metallische Spezialwerk Process for the production of a magnetizable material with a rectangular hysteresis loop and preferably high initial permeability from Ni-Fe alloys

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