DE443356C - Process for the production of subdivided cores for induction coils - Google Patents
Process for the production of subdivided cores for induction coilsInfo
- Publication number
- DE443356C DE443356C DEA41439D DEA0041439D DE443356C DE 443356 C DE443356 C DE 443356C DE A41439 D DEA41439 D DE A41439D DE A0041439 D DEA0041439 D DE A0041439D DE 443356 C DE443356 C DE 443356C
- Authority
- DE
- Germany
- Prior art keywords
- cores
- subdivided
- induction coils
- production
- magnetic material
- 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
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
- H01F1/20—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 particles, e.g. powder
- H01F1/22—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 particles, e.g. powder pressed, sintered, or bound together
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Induction Heating (AREA)
Description
Verfahren zur Herstellung unterteilter Kerne für Induktionsspulen. Kerne für Induktionsspulen sind im allgemeinen zur Vermeidung übermäßiger Wirbelstromverluste unterteilt, d. h. sie sind beispielsweise aus Blech, Band, Draht oder Pulver zusammengesetzt. Besonders beider Verwendung von Draht oder Pulver findet keine volle Ausnutzung des zur Verfügung stehenden Raumes statt. Es ist zwar möglich, durch sehr hohe Drucke das Material in kaltem Zustande zu deformieren und auf ein relativ kleines Volumen zusammenzupressen. Die Anwendung derartig hoher Drucke ist jedoch, abgesehen von den technischen Schwierigkeiten der Ausführung, sowohl für das magnetische Material wie auch für die Isolation schädlich. Ferner ist es bekannt, Kerne mit einem Bindemittel aus Harzen, aus geschmolzenem Glas oder aus anderen bei hoher Temperatur schmelzenden, isolierenden Stoffen in warmem Zustand zu pressen oder sie als zusammenhängende Masse erkalten zu lassen, um erst hiernach die gewünschten Formen herzustellen.Process for the production of divided cores for induction coils. Induction coil cores are generally used to prevent excessive eddy current losses divided, d. H. they are composed, for example, of sheet metal, strip, wire or powder. Especially when using wire or powder, it is not fully utilized of the available space. While it is possible through very high pressures to deform the material when cold and to a relatively small volume to squeeze. However, the use of such high pressures is apart from the technical difficulties of execution, both for the magnetic material as well as detrimental to isolation. It is also known to use cores with a binder from resins, from molten glass or from other high temperature melting, to press insulating fabrics in a warm state or as cohesive ones To let the mass cool down in order to produce the desired shapes only afterwards.
Gemäß der Erfindung kann dieselbe oder sogar eine bessere Raumausnutzung ohne Anwendung derartig hoher Drucke dadurch erzielt werden, daß der Kern in so hoch erhitztem Zustande, z. B. bei Glühtemperatur, gepreßt wird, daß das magnetische Material eine erhöhte Formbarkeit besitzt.According to the invention, the same or even better use of space can be achieved without applying such high pressures can be achieved by having the core in so highly heated conditions, e.g. B. at annealing temperature, is pressed that the magnetic Material has an increased formability.
Die Ausführung dieses Verfahrens wird beispielsweise ermöglicht durch Verwendung eines bei der in Frage kommenden Temperatur beständigen Materials, das die Einzelteile nach dem Erkalten mechanisch fest zusammenhält und elektrisch gut isoliert. Dieses Material kann den jeweiligen Änsprüchen entsprechend bei der Preßtemperatur fest, plastisch oder flüssig sein. Für niedrige Glühtemperaturen bilden beispielsweise die verschiedenen Glassorten, für höhere Temperaturen Porzellan oder ähnliche Stoffe eine geeignete Zwischensubstanz, die während des Pressens die Einzelteile umfließt.This method is made possible, for example, by Use of a material that is stable at the temperature in question, which holds the individual parts together mechanically and electrically well after cooling isolated. This material can be used according to the respective requirements at the pressing temperature be solid, plastic or liquid. For example, for low annealing temperatures the different types of glass, for higher temperatures porcelain or similar materials a suitable intermediate substance that flows around the individual parts during pressing.
Bei sehr hohen Temperaturen, bei denen das magnetische Material sehr weich oder flüssig wird, empfiehlt sich dagegen die Anwendung eines anderen, selbst bei diesen Temperaturen festen Bindemittels - beispielsweise Magnesia -, das dem Körper den nötigen Halt verleiht und die Einzelteile voneinander isoliert.At very high temperatures where the magnetic material is very If it becomes soft or liquid, it is advisable to use someone else, yourself at these temperatures solid binder - for example magnesia - that the Gives the body the necessary support and isolates the individual parts from each other.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA41439D DE443356C (en) | 1924-01-30 | 1924-01-30 | Process for the production of subdivided cores for induction coils |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA41439D DE443356C (en) | 1924-01-30 | 1924-01-30 | Process for the production of subdivided cores for induction coils |
Publications (1)
Publication Number | Publication Date |
---|---|
DE443356C true DE443356C (en) | 1927-04-26 |
Family
ID=6932532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA41439D Expired DE443356C (en) | 1924-01-30 | 1924-01-30 | Process for the production of subdivided cores for induction coils |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE443356C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1173196B (en) * | 1955-06-03 | 1964-07-02 | Siemens Ag | Process for the production of a soft-magnetic sintered body with high permeability and small eddy current losses |
DE1195882B (en) * | 1955-06-08 | 1965-07-01 | Siemens Ag | Process for the production of a soft magnetic sintered body |
-
1924
- 1924-01-30 DE DEA41439D patent/DE443356C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1173196B (en) * | 1955-06-03 | 1964-07-02 | Siemens Ag | Process for the production of a soft-magnetic sintered body with high permeability and small eddy current losses |
DE1195882B (en) * | 1955-06-08 | 1965-07-01 | Siemens Ag | Process for the production of a soft magnetic sintered body |
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