DE977648C - Process for improving the properties of magnetically stressed objects made of iron-silicon alloys - Google Patents
Process for improving the properties of magnetically stressed objects made of iron-silicon alloysInfo
- Publication number
- DE977648C DE977648C DES10670D DES0010670D DE977648C DE 977648 C DE977648 C DE 977648C DE S10670 D DES10670 D DE S10670D DE S0010670 D DES0010670 D DE S0010670D DE 977648 C DE977648 C DE 977648C
- Authority
- DE
- Germany
- Prior art keywords
- iron
- properties
- silicon
- improving
- silicon alloys
- 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
Links
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 title claims description 8
- 229910000676 Si alloy Inorganic materials 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 4
- 238000000137 annealing Methods 0.000 claims description 21
- 230000035699 permeability Effects 0.000 claims description 13
- 238000001953 recrystallisation Methods 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000005097 cold rolling Methods 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
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
- C21D8/1272—Final recrystallisation annealing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
Description
Verfahren zur Verbesserung der Eigenschaften von magnetisch beanspruchten Gegenständen aus Eisen-Silizium-Legierungen Für Übertrager der Schwachstromtechnik werden Legierungen benötigt, welche eine möglichst hohe Permeabilität bei 2o mOe und gleichzeitig einen kleinen Anstieg der Permeabilität aufweisen. Der Erfindung liegt die Aufgabe zugrunde, diese Forderungen mit geringstem Einsatz an Sparmetallen und möglichst niedrigem Energieaufwand zu erfüllen.Process for improving the properties of magnetically stressed Objects made of iron-silicon alloys For transmitters of low-voltage technology alloys are required which have the highest possible permeability at 2o mOe and at the same time have a small increase in permeability. The invention The underlying task is to meet these requirements with the least amount of saving metals and to meet the lowest possible energy expenditure.
Man hat zwar bereits nickelfreie Werkstoffe entwickelt, die für Übertrager der Schwachstromtechnik geeignet sind, doch erfordern diese Werkstoffe unter anderem zu ihrer Herstellung einen sehr hohen letzten Kaltverformungsgrad, reines Ausgangsmaterial und/oder ein Erschmelzen in kleineren Chargen im Vakuum. Nur dann erfüllen sie die Bedingungen, welche an Legierungen für hochwertige Übertrager der Schwachstromtechnik gestellt werden müssen. Infolge des hohen Arbeitsaufwandes sind die Herstellungskosten dieser Legierungen recht bedeutend.Nickel-free materials have already been developed for transformers the low-current technology are suitable, but require these materials, among other things a very high final degree of cold deformation for their production, pure starting material and / or melting in smaller batches in a vacuum. Only then will they meet them Conditions which alloys have to offer for high-quality transmitters for low-voltage technology must be asked. As a result of the high workload, the manufacturing costs are of these alloys quite significant.
Die Erfindung verwendet als Ausgangsmaterial Eisen-Silizium-Legierungen mit etwa 2 bis q.0/0, beispielsweise 3,5% Silizium, das in großen Chargen bis zu 2o t offen erschmolzen wird. Diese Legierungen werden nach der üblichen Warmwalzung in mehreren Stufen mit einer Dickenabnahme von 40 bis 75 % und Zwischenglühungen bei 60o bis iooo° C kaltgewalzt. Erfindungsgemäß schließt sich an diese Behandlung eine Schlußglühung in reduzierender Atmosphäre an, vorzugsweise in angefeuchtetem Wasserstoff knapp oberhalb der Rekristallisationstemperatur, jedoch nicht oberhalb 62o° C.The invention uses iron-silicon alloys as the starting material with about 2 to q.0 / 0, for example 3.5% silicon, which in large batches up to 2o t is melted openly. These alloys are made after the usual hot rolling in several stages with a decrease in thickness of 40 to 75% and intermediate anneals Cold rolled at 60o to 100o ° C. This treatment follows according to the invention a final annealing in a reducing atmosphere, preferably in a humidified atmosphere Hydrogen just above the recrystallization temperature, but not above 62o ° C.
Siliziumhaltige Eisenlegierungen, welche nach mehrfacher Kaltverformung und Zwischenglühungen einer Schlußglühung bei iooo° C und mehr unterworfen wurden, sind in der Technik bereits zur Anwendung gekommen. Durch diese mehrfache Kaltverformung, die eingeschalteten Zwischenglühungen und die Schlußglühung bei über iooo° C werden Silizium-Eisen-Bleche erhalten, die die sogenannte Goss-Textur aufweisen. Sie sind ausgezeichnet durch niedrige Wattverluste und 'hohe Werte der Maximalpermeabilität und werden für Starkstromzwecke sehr geschätzt. Ferner wurden auch schon Versuche vorgenommen, kaltverformte Bleche durch Glühen bei mehr als 1200° C in reinstem Wasserstoff, der besonders stickstoff- und kohlenstofffrei sein muß, so zu beeinflussen, daß besondere magnetische Eigenschaften erzielt werden. So behandelte Bleche ergeben hohe Werte der Permeabilität bei 20 m0e, zeigen aber einen sehr hohen Anstieg der Permeabilität von mehr als 5o %, der die Verwendung dieser Bleche für hochwertige Übertrager der Schwachstromtechnik verbietet.Silicon-containing iron alloys, which after multiple cold forming and intermediate anneals were subjected to a final annealing at 100 ° C and more, have already been used in technology. Through this multiple cold deformation, the switched-on intermediate annealing and the final annealing are over 100 ° C Silicon-iron sheets are obtained, which have the so-called Goss texture. they are distinguished by low watt losses and high values of maximum permeability and are highly valued for heavy current purposes. There have also been attempts made, cold-formed sheets by annealing at more than 1200 ° C in the purest To influence hydrogen, which must be particularly free of nitrogen and carbon, that special magnetic properties are achieved. Panels treated in this way result high values of permeability at 20 m0e, but show a very high increase in Permeability of more than 5o%, which makes the use of these sheets for high quality Transmitters of the weak current technology forbids.
Es wurden auch warmgewalzte Bleche einer Wärmebehandlung in reduzierender Atmosphäre unterzogen. Damit ließen sich aber ebenfalls nicht die geforderten Werte erreichen.Hot-rolled sheets have also been subjected to a reducing heat treatment Atmosphere. However, this also does not allow the required values reach.
Es sind weiterhin in älteren Patenten Maßnahmen für die Schlußglühung von Eisen-Silizium-Legierungen angegeben, die eine hohe Anfangspermeabilität mit einem flachen Anstieg der Permeabilität mit wachsender Feldstärke hervorrufen sollten. In diesen älteren, nicht zum Stand der Technik gehörenden Vorschlägen waren verschiedene Temperaturbereiche für die Schlußglühung angegeben. Es fand sich aber nirgends ein Hinweis, daß die Höhe der Schlußglühtemperätur knapp oberhalb der Rekristallisationstemperatur, jedoch nicht höher als 62o° C, liegen solle.There are still measures for the final annealing in older patents indicated by iron-silicon alloys, which have a high initial permeability should cause a flat increase in permeability with increasing field strength. There were several in these older, non-prior art proposals Temperature ranges given for the final annealing. But it was nowhere to be found Note that the final annealing temperature is just above the recrystallization temperature, but not higher than 62o ° C, should be.
Bei einem der älteren Vorschläge wurde von einer Schlußglühung bei Temperaturen oberhalb 65o° C bis höchstens 80o° C gesprochen. Es war dort nicht angegeben worden, wie die Atmosphäre bei der Schlußglühung beschaffen sein sollte.One of the older proposals had a final glow at Temperatures above 65o ° C to a maximum of 80o ° C are spoken. It wasn't there how the atmosphere should be made for the final glow.
In einem anderen, ebenfalls nicht zum Stand der Technik gehörenden älteren Recht ist ebenfalls ohne Bezugnahme auf die Rekristallisationstemperatur angegeben, daß die Schlußglühung bei 60o bis 75o° C erfolgen soll. Es sind aber für die vorausgehende Verarbeitung keine näheren Angaben gemacht.In another, also not belonging to the state of the art older law is also without reference to the recrystallization temperature indicated that the final annealing should take place at 60o to 75o ° C. But there are no further information was given for the previous processing.
Das gleiche gilt auch für einen anderen Vorschlag, die Schlußglühtemperatur zwischen 50o und 80o° C zu wählen.The same applies to another suggestion, the final annealing temperature to choose between 50o and 80o ° C.
Schließlich ist aus einem weiteren älteren Recht, das eine Schlußglühtemperatur von 35o bis 65o° C nennt, nicht zu entnehmen, daß die Schlußglühung in reduzierender Atmosphäre ausgeführt werden soll und daß sich diese Schlußglühung unmittelbar an eine mehrfache Kaltverformung anschließen soll, ohne daß zwischen dem letzten Kaltverformungsschritt und der Schlußglühung noch eine Glühung bei höherer Temperatur eingeschaltet wird.Finally, from another older law, that is a final annealing temperature from 35o to 65o ° C, it cannot be inferred that the final annealing is in reducing Atmosphere is to be carried out and that this final annealing immediately follows a multiple cold deformation should follow without any between the last cold deformation step and an annealing at a higher temperature is switched on after the final annealing.
Es war überraschend, daß erfindungsgemäß durch eine Schlußglühung
von mehrfach mit je 4o bis 75'10
Dickenabnahme und Zwischenglühungen bei 60o
bis 100o° C hergestellten Silizium-Eisen-Legierungen mit 2 bis q.0/0 Silizium durch
eine Schlußglühung bei Temperaturen knapp oberhalb der Rekristallisationstemperatur
in reduzierender Atmosphäre bei verhältnismäßig hoher Permeabilität in schwachen
Feldern ein geringer Permeabilitätsanstieg erzeugt wird. Aus der nachfolgenden Tabelle
ergibt sich, daß durch eine Glühung bei 60o° C Bleche erhalten werden, die die Bedingungen
der Klasse A 1 des Normblattes DIN E 41301 (,u20 = 850 ± 150, 8190 kleiner
als 5 0e-1) sehr sicher erfüllen. Aus dem Verlauf der Permeabilitätskurve bei abnehmender
Glühtemperatur hätte man bei 60o° C einen besonders niedrigen Wert der Permeabilität
nahe bei 60o° C erwartet; statt dessen wurde ein neues Anwachsen der Permeabilität,
verknüpft mit einem starken Abfall des Anstieges; gefunden.
Das erfindungsgemäße Verfahren bietet nicht nur die Möglichkeit, einen nickelfreien Werkstoff für hochwertige Fernmeldeübertrager zu schaffen, sondern ist auch in der Durchführung so einfach, daß die Herstellungskosten der erfindungsgemäß erzeugten Eisen-Silizium-Bleche nur etwa ein Viertel derjenigen betragen, die bisher für hochwertige nickelfreie Übertragerbleche aufgewendet werden mußten.The inventive method not only offers the possibility of a to create nickel-free material for high-quality telecommunication transmitters, rather is also so simple to carry out that the manufacturing costs of the invention The iron-silicon sheets produced are only about a quarter of those produced so far had to be used for high-quality nickel-free transfer plates.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES10670D DE977648C (en) | 1944-04-07 | 1944-04-07 | Process for improving the properties of magnetically stressed objects made of iron-silicon alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES10670D DE977648C (en) | 1944-04-07 | 1944-04-07 | Process for improving the properties of magnetically stressed objects made of iron-silicon alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE977648C true DE977648C (en) | 1967-11-30 |
Family
ID=7473396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES10670D Expired DE977648C (en) | 1944-04-07 | 1944-04-07 | Process for improving the properties of magnetically stressed objects made of iron-silicon alloys |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE977648C (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1965559A (en) * | 1933-08-07 | 1934-07-03 | Cold Metal Process Co | Electrical sheet and method and apparatus for its manufacture and test |
| US2042124A (en) * | 1934-03-05 | 1936-05-26 | Wheeling Steel Corp | Electric sheet |
| AT147148B (en) * | 1934-01-04 | 1936-10-10 | Krupp Ag | Process for improving the magnetic properties, in particular the permeability of iron-silicon alloys. |
| US2158065A (en) * | 1935-01-09 | 1939-05-16 | American Rolling Mill Co | Art of producing magnetic materials |
| US2173240A (en) * | 1936-03-06 | 1939-09-19 | Siemens Ag | Method for manufacturing magnetic material of high permeability in sheet form |
| GB536119A (en) * | 1939-01-31 | 1941-05-02 | British Thomson Houston Co Ltd | Improvements in and relating to the manufacture of silicon steel strip |
| US2287467A (en) * | 1940-01-03 | 1942-06-23 | American Rolling Mill Co | Process of producing silicon steel |
| DE742930C (en) * | 1940-05-22 | 1943-12-14 | Heraeus Vacuumschmelze Ag | Process to achieve a slight increase in the initial permeability with the field strength for pure iron |
| DE763989C (en) * | 1933-08-07 | 1952-08-21 | Cold Metal Process Company | Process for improving the properties of transformer or dynamo sheets made from hot-rolled silicon steel |
| DE880595C (en) * | 1941-06-27 | 1953-06-22 | Eisen & Stahlind Ag | Process for the production of magnetically stressed objects |
| DE884812C (en) * | 1942-01-27 | 1953-07-30 | Aeg | Process for producing magnetic material from iron-silicon or iron-silicon-aluminum alloys with a small increase in permeability at low field strengths |
| DE927692C (en) * | 1940-10-08 | 1955-05-16 | Eisen & Stahlind Ag | The use of iron-silicon alloys as a material for magnetically stressed objects |
| DE968711C (en) * | 1941-06-29 | 1958-03-20 | Vacuumschmelze Ag | Process for treating iron-silicon and iron-aluminum alloys |
-
1944
- 1944-04-07 DE DES10670D patent/DE977648C/en not_active Expired
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE763989C (en) * | 1933-08-07 | 1952-08-21 | Cold Metal Process Company | Process for improving the properties of transformer or dynamo sheets made from hot-rolled silicon steel |
| US1965559A (en) * | 1933-08-07 | 1934-07-03 | Cold Metal Process Co | Electrical sheet and method and apparatus for its manufacture and test |
| AT147148B (en) * | 1934-01-04 | 1936-10-10 | Krupp Ag | Process for improving the magnetic properties, in particular the permeability of iron-silicon alloys. |
| US2042124A (en) * | 1934-03-05 | 1936-05-26 | Wheeling Steel Corp | Electric sheet |
| US2158065A (en) * | 1935-01-09 | 1939-05-16 | American Rolling Mill Co | Art of producing magnetic materials |
| US2173240A (en) * | 1936-03-06 | 1939-09-19 | Siemens Ag | Method for manufacturing magnetic material of high permeability in sheet form |
| GB536119A (en) * | 1939-01-31 | 1941-05-02 | British Thomson Houston Co Ltd | Improvements in and relating to the manufacture of silicon steel strip |
| US2287467A (en) * | 1940-01-03 | 1942-06-23 | American Rolling Mill Co | Process of producing silicon steel |
| DE742930C (en) * | 1940-05-22 | 1943-12-14 | Heraeus Vacuumschmelze Ag | Process to achieve a slight increase in the initial permeability with the field strength for pure iron |
| DE927692C (en) * | 1940-10-08 | 1955-05-16 | Eisen & Stahlind Ag | The use of iron-silicon alloys as a material for magnetically stressed objects |
| DE880595C (en) * | 1941-06-27 | 1953-06-22 | Eisen & Stahlind Ag | Process for the production of magnetically stressed objects |
| DE968711C (en) * | 1941-06-29 | 1958-03-20 | Vacuumschmelze Ag | Process for treating iron-silicon and iron-aluminum alloys |
| DE884812C (en) * | 1942-01-27 | 1953-07-30 | Aeg | Process for producing magnetic material from iron-silicon or iron-silicon-aluminum alloys with a small increase in permeability at low field strengths |
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