DE968915C - Closed ferromagnetic core with butt joints - Google Patents
Closed ferromagnetic core with butt jointsInfo
- Publication number
- DE968915C DE968915C DES27874A DES0027874A DE968915C DE 968915 C DE968915 C DE 968915C DE S27874 A DES27874 A DE S27874A DE S0027874 A DES0027874 A DE S0027874A DE 968915 C DE968915 C DE 968915C
- Authority
- DE
- Germany
- Prior art keywords
- butt joints
- ferromagnetic core
- core
- butt
- closed ferromagnetic
- 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
- 230000005294 ferromagnetic effect Effects 0.000 title claims description 5
- 210000001503 joint Anatomy 0.000 claims description 16
- 230000005291 magnetic effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
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
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
Description
Geschlossener ferromagnetischer Kern mit Stoßfugen Es ist bekannt, daß der magnetische Widerstand eines geschlossenen ferromagnetischen Kernes durch Stoßfugen vergrößert und dadurch ein erhöhter Leistungsaufwand zur Magnetisierung erforderlich wird. Abgesehen von dieser Erhöhung des Leistungsaufwandes sind aber Stoßfugen - sofern sich der magnetische Kern in einer Meßanordnung befindet - auch deswegen lästig, weil die an den Stoßfugen entstehende Streuung zu Meßfehlern führt. Um solche Wirkungen zu unterdrücken, ist es z. B. bekannt, die Kernflächen an den Stoßfugen zu schleifen: oder die Stoßfugen durch ferromagnetisches Material auszufüllen. Es ist auch bekannt, derartige Füllmaterialien aus Eisenpulver mit einem nichtplastischen Bindemittel herzustellen und im Bedarfsfalle zur Verringerung des störenden Einflusses der Stoßfuge auch über die Ränder der Fuge hervortreten zu lassen.Closed ferromagnetic core with butt joints It is known that the magnetic resistance of a closed ferromagnetic core through Enlarged butt joints and thus an increased effort for magnetization is required. Apart from this increase in the effort required, however Butt joints - if the magnetic core is in a measuring arrangement - also therefore annoying because the scattering occurring at the butt joints leads to measurement errors. To suppress such effects, it is e.g. B. known, the core surfaces of the Grinding butt joints: or filling the butt joints with ferromagnetic material. It is also known that such filler materials are made of iron powder with a non-plastic Produce binders and, if necessary, to reduce the disruptive influence to let the butt joint protrude beyond the edges of the joint.
Diese Art der Beseitigung der Wirkungen von Stoßfugen ist nicht immer leicht durchführbar, insbesondere wenn ein größeres Paket dünner Bleche die Stoßfuge bildet. Gemäß der Erfindung werden diegenanntennachteiligen WirkungenvonStoßfugen dadurch herabgesetzt, daß der Kern an den Stoßfugen mit einem magnetisch leitenden, aber elektrisch nichtleitenden Band umwickelt wird. Ein solches, aus ferromagnetischen Teilchen und einem Bindemittel bestehendes Bandmaterial ist beispielsweise in der Magnettontechnik bekannt. Es hat den Vorteil, daß es nach der Zusammensetzung der Kernteile leicht anbringbar ist und dann für die Stoßfuge eine magnetische Brücke bildet, wodurch die Wirkung der Stoßfugen aufgehoben oder vermindert wird. Die aus der Magnettontechnik bekannten magnetisch leitenden Bänder sind infolge ihrer hohen Permeabilität besonders geeignet, einen. guten magnetischen Schluß über die Stoßfuge hinweg herzustellen.This way of eliminating the effects of butt joints is not always Easily feasible, especially when a larger package of thin sheet metal is the butt joint forms. According to the invention, the aforesaid adverse effects of butt joints are eliminated reduced by the fact that the core at the butt joints with a magnetically conductive, but electrically non-conductive tape is wrapped around it. One made of ferromagnetic Particles and a binder existing tape material is for example in the Magnetic sound technology known. It has the advantage that it is based on the composition of the Core parts can be easily attached and then a magnetic bridge for the butt joint forms what the effect of the butt joints is canceled or reduced will. The magnetically conductive tapes known from magnetic sound technology are due to their high permeability particularly suitable for a. good magnetic conclusion about to make the butt joint away.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES27874A DE968915C (en) | 1952-03-29 | 1952-03-29 | Closed ferromagnetic core with butt joints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES27874A DE968915C (en) | 1952-03-29 | 1952-03-29 | Closed ferromagnetic core with butt joints |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE968915C true DE968915C (en) | 1958-04-10 |
Family
ID=7479249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES27874A Expired DE968915C (en) | 1952-03-29 | 1952-03-29 | Closed ferromagnetic core with butt joints |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE968915C (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE451544C (en) * | 1925-04-15 | 1927-10-22 | Siemens Schuckertwerke G M B H | Laminated iron core for transformers |
| DE454081C (en) * | 1925-07-26 | 1927-12-27 | Aeg | Method for increasing the permeability of subdivided magnetic cores, in particular magnetic cores made of powder, cross wire cores and the like. like |
| AT140699B (en) * | 1932-10-19 | 1935-02-25 | Siemens Ag | Magnetic bodies, in particular for high frequency purposes. |
| GB427322A (en) * | 1932-10-19 | 1935-04-15 | Siemens Ag | Improvements in and relating to magnetic bodies more especially in high frequency electrical apparatus |
| FR796262A (en) * | 1934-10-26 | 1936-04-03 | Siemens Ag | Method of adjusting the value of chokes |
| DE684228C (en) * | 1936-04-30 | 1939-11-24 | Aeg | Magnetic core for high frequency coils |
| DE717284C (en) * | 1935-10-06 | 1942-02-11 | Ig Farbenindustrie Ag | Process for the production of mass cores |
-
1952
- 1952-03-29 DE DES27874A patent/DE968915C/en not_active Expired
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE451544C (en) * | 1925-04-15 | 1927-10-22 | Siemens Schuckertwerke G M B H | Laminated iron core for transformers |
| DE454081C (en) * | 1925-07-26 | 1927-12-27 | Aeg | Method for increasing the permeability of subdivided magnetic cores, in particular magnetic cores made of powder, cross wire cores and the like. like |
| AT140699B (en) * | 1932-10-19 | 1935-02-25 | Siemens Ag | Magnetic bodies, in particular for high frequency purposes. |
| GB427322A (en) * | 1932-10-19 | 1935-04-15 | Siemens Ag | Improvements in and relating to magnetic bodies more especially in high frequency electrical apparatus |
| FR796262A (en) * | 1934-10-26 | 1936-04-03 | Siemens Ag | Method of adjusting the value of chokes |
| DE717284C (en) * | 1935-10-06 | 1942-02-11 | Ig Farbenindustrie Ag | Process for the production of mass cores |
| DE684228C (en) * | 1936-04-30 | 1939-11-24 | Aeg | Magnetic core for high frequency coils |
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