EP3688204A1 - Monolithische eisenbasierte abschirmprodukte - Google Patents
Monolithische eisenbasierte abschirmprodukteInfo
- Publication number
- EP3688204A1 EP3688204A1 EP18778414.5A EP18778414A EP3688204A1 EP 3688204 A1 EP3688204 A1 EP 3688204A1 EP 18778414 A EP18778414 A EP 18778414A EP 3688204 A1 EP3688204 A1 EP 3688204A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil
- dynamic
- material according
- shielding
- voltage
- 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.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title description 6
- 229910052742 iron Inorganic materials 0.000 title description 2
- 239000000463 material Substances 0.000 claims abstract description 80
- 230000003068 static effect Effects 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 28
- 230000005670 electromagnetic radiation Effects 0.000 claims abstract description 17
- YBJHBAHKTGYVGT-ZKWXMUAHSA-N (+)-Biotin Chemical compound N1C(=O)N[C@@H]2[C@H](CCCCC(=O)O)SC[C@@H]21 YBJHBAHKTGYVGT-ZKWXMUAHSA-N 0.000 claims description 20
- FEPMHVLSLDOMQC-UHFFFAOYSA-N virginiamycin-S1 Natural products CC1OC(=O)C(C=2C=CC=CC=2)NC(=O)C2CC(=O)CCN2C(=O)C(CC=2C=CC=CC=2)N(C)C(=O)C2CCCN2C(=O)C(CC)NC(=O)C1NC(=O)C1=NC=CC=C1O FEPMHVLSLDOMQC-UHFFFAOYSA-N 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 15
- 238000005275 alloying Methods 0.000 claims description 6
- 229910001566 austenite Inorganic materials 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 229910052785 arsenic Inorganic materials 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- 230000005672 electromagnetic field Effects 0.000 claims description 3
- 229910000734 martensite Inorganic materials 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 229910001563 bainite Inorganic materials 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 150000001247 metal acetylides Chemical class 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 229910001562 pearlite Inorganic materials 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims description 2
- 230000005684 electric field Effects 0.000 abstract 3
- 238000000576 coating method Methods 0.000 description 10
- 238000004804 winding Methods 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000006735 deficit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012777 electrically insulating material Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000006223 plastic coating Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/361—Electric or magnetic shields or screens made of combinations of electrically conductive material and ferromagnetic material
-
- 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
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/36—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
-
- 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
- H01F1/147—Alloys characterised by their composition
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/363—Electric or magnetic shields or screens made of electrically conductive material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/867—Means associated with the outside of the vessel for shielding, e.g. magnetic shields
Definitions
- the present invention relates to an electromagnetic radiation, dynamic or static electrical and / or dynamic or static magnetic field shielding, monolithic material, a method for shielding electromagnetic radiation, dynamic or static electrical and / or dynamic or static magnetic fields, and the use of material according to the invention for shielding electromagnetic radiation, dynamic or static electrical and / or dynamic or static magnetic fields.
- the influence due to electromagnetic radiation, dynamic or static electrical and / or dynamic or static magnetic fields is described as the effect of electromagnetic quantities on circuits, devices, systems and living beings.
- This interference can cause a reversible or irreversible impairment, which can lead to an intolerable malfunction of equipment and systems.
- Influencing is when the field energy from a source of interference (transmitter) reaches a susceptible sink (receiver) via a coupling, where it leads to a reduction in function or even destruction.
- Sources of interference may result as a natural or artificially generated source for intentional or unintentional generation of electromagnetic radiation, dynamic or static electrical and / or dynamic or static magnetic fields.
- Typical screen materials for the treatment of static or low-frequency magnetic fields are usually iron alloys whose main characteristics are the highest possible magnetic permeability and saturation flux density with simultaneously low coercive field strength and remanent flux density.
- Known shielding acting materials contain a high proportion of nickel, especially in the case of high demands on the shielding properties, and are thus very cost-intensive. You have In addition, usually only low mechanical strength and without additional surface treatment only a low mechanical resistance to corrosive media.
- Residual Fe and unavoidable impurities having a screen factor S (v) of 25.00 to +120.00 dB in a dynamic magnetic field or a dynamic electromagnetic field with a frequency v of 0, 1 up to 1000 kHz, the screen factor S (v) being determined from the quotient of the field strength measured at the location of the sink with or without shielding material between sink and source.
- the present invention preferably relates to the material according to the invention, wherein the screening factor S (v) is induced by detecting the voltage U 2 (v) in a second coil, which is induced by a current I 1 in a first coil, while a sample of the shielding monolithic material is located between the first and the second coil and the coils are at a distance of at most 40 mm, is determined.
- the present invention relates to the material according to the invention, wherein screen factor S (v) according to the equation of the formula (I)
- Carbon (C) is present in an amount of 0.001 to 2, 1 wt .-%, preferably 0.001 to 0.800 wt .-%, more preferably 0.002 to 0.700 wt .-%, most preferably 0.002 to 0.650 wt .-%, before ,
- Manganese (Mn) is present in an amount of 0.001 to 30.00 wt%, preferably 0.01 to 25.00 wt%, more preferably 0.1 to 23.00 wt%.
- Silicon (Si) is in an amount of 0.001 to 8.00 wt .-%, preferably 0.001 to 4.00 wt .-%, particularly preferably 0.01 to 3.5 wt .-%, most preferably 0.02 to 3.4 wt .-%, before.
- Aluminum (AI) is in an amount of 0.01 to 4.00 wt .-%, preferably 0.01 to 2.00 wt .-%, particularly preferably 0.02 to 1.8 wt .-%, very particularly preferably 0.02 to 1.6 wt .-%, before.
- Chromium (Cr) is present in an amount of 0.001 to 1, 00 wt .-%, preferably 0.01 to 0.5 wt .-%, particularly preferably 0.01 to 0.4 wt .-%, before.
- the shielding material according to the invention may have one or more alloying elements from the following group comprising As, B, Cu, Ni, Mo, Ti, V, S, P and Sn.
- the present invention therefore preferably relates to the material according to the invention, wherein it additionally contains at least one alloying element selected from the group consisting of As, B, Cu, Ni, Mo, Ti, V, S, P and Sn.
- the said additional alloying elements are present, they are furthermore preferably present in the amounts stated below:
- Unavoidable impurities in the sense of the present invention are, for example, 0, N, Nb or Sb.
- the material according to the invention has a microstructure comprising 0 to 100% by weight, preferably 5 to 95% by weight, ferrite, 0 to 95% by weight, preferably 0 to 60% by weight, bainite, 0 to 20 wt .-%, preferably 5 to 20 wt .-% pearlite, 0 to 100 wt .-%, preferably 3 to 35 wt .-%, martensite or up to 100 wt .-% martensite, 0 to 20 wt. -%, preferably 2 to 15 wt .-%, retained austenite and optionally carbides, wherein the respective sum 100 wt .-% results on.
- the material according to the invention has particularly good mechanical properties, in particular yield strength, ductility, tensile strength and / or elongation at break.
- the material of the invention contains no austenitic structure.
- this means that the material according to the invention has a microstructure which preferably contains less than 8% by weight austenite, more preferably less than 5% by weight, most preferably less than 2% by weight.
- the absence of austenite enables the good shielding properties of the present invention. It has surprisingly been found that the presence of austenite worsens the shielding properties, so that preferably no austenite is present in the material according to the invention.
- the material according to the invention has for example a yield strength of 100 to 1400 MPa.
- the material according to the invention has, for example, a tensile strength of at least 200 MPa, preferably at least 400 MPa, more preferably at least 750 M Pa.
- the material according to the invention has, for example, an elongation at break A80 of 2 to 45%.
- the material of the invention has a particle size of 2 to 200 ⁇ , preferably 2 to 100 [im, more preferably 5 to 30 ⁇ on.
- This preferred grain size according to the invention contributes, for example, to improve the magnetic properties.
- the material according to the invention can be used in all dimensions which appear suitable to the person skilled in the art for the respective application.
- the material according to the invention is present as a sheet-metal semifinished product, for example as a coil, sheet metal, sheet, plate, etc.
- the material according to the invention can furthermore be brought into all forms known to the person skilled in the art in order to be used as a shield. It is possible that corresponding shields are formed integrally from the material according to the invention. It is also possible according to the invention that a corresponding shield is constructed from a plurality of parts, wherein all or a portion of the existing parts can be formed from the material according to the invention. Methods for forming the material according to the invention and methods for joining the individual parts are known to the person skilled in the art.
- Methods for producing the material according to the invention are known per se to those skilled in the art, for example comprising the steps of producing a melt with the appropriate composition, producing slabs, hot rolling the slabs to obtain a flat steel product, optionally coating the surface of the flat steel product, optionally cold rolling.
- additional heat treatment steps in particular a recovery annealing, and / or surface treatment steps can additionally take place.
- the material according to the invention is distinguished by particularly good shielding properties.
- the material according to the invention has a screen factor S (v) of 25.00 to +120.00 dB, preferably 30.00 to 120.00 dB in the case of a dynamic, magnetic field or a dynamic, electromagnetic field at a frequency v of 0, 1 to 1000 kHz, preferably 0, 1 to 400 kHz, particularly preferably 0, 1 to 200 kHz, on.
- the shielding factor S (v) is preferably determined by measuring the voltage U 2 (v) in a second coil induced by a current li (v) in a first coil while interposing a sample of the shielding monolithic material between the first and the second coil is located and the coils are at a distance of at most 40 mm.
- the screen factor S (v) is particularly preferably calculated according to the equation of the formula (I) where U 2 (v) is the voltage induced in the second coil, 1) the current flowing in the first coil, and li 0 (v) the current in the first coil and U 2 o (v) the voltage in the second coil Coil, each without introduced sample, are.
- the screen attenuation S (v) of the material according to the invention is determined by a method, comprising at least the following steps: Providing a first coil Sl with a first inductance LI, which is connected to a first signal generator SGI and a device for current measurement l ⁇ ) to a first circuit,
- Step (A) comprises providing a first coil Sl having a first inductance LI, which is connected to a first signal generator SGI and a device for current measurement to a first circuit.
- a coil Sl is provided with an inductance LI.
- coils corresponding to coils S1 having 1 to 100, preferably 15 to 30 windings are used. More preferably, these windings are on a ring of an electrically insulating material, such as plastic, in particular polyamide, before.
- the diameter of the coil Sl is preferably 60 to 80 mm.
- the winding of the coil Sl is preferably made of an electrically conductive wire, in particular a stranded wire made of copper.
- the electrically conductive wire is electrically insulated on the outside, for example by an electrically insulating plastic coating.
- the length of the wire from which the winding of the first coil Sl is constructed, according to the invention is preferably 3 to 7 m.
- the coil Sl has an inductance LI of, for example 4 ⁇ 10 -2 to 1.5 10 3 ⁇ , preferably 30 to 60 ⁇ on.
- the coil S1 can generally be arranged in any possible way.
- the coil Sl is arranged so that the winding plane is aligned parallel to the ground or a table top on which the device is constructed.
- a first signal generator SGI is used.
- This signal generator SGI is used according to the invention to generate a magnetic field with a frequency v (measuring frequency) in the first coil S1.
- v measuring frequency
- any signal generator known to those skilled in the art can be used, which is suitable for generating a corresponding frequency, for example a "Virtual Bench” from the company National Instruments.
- the signal generator SGI is preferably a frequency v of 0, 1 to 200 kHz, for example 0, 1 kHz, 0.2 kHz, 0.5 kHz, 1, 0 kHz, 2.0 kHz, 5.0 kHz, 10, 0 kHz, 20.0 kHz, 50.0 kHz, 100.0 kHz or 200 kHz.
- a device for measuring current in the first circuit Suitable devices for current measurement are known per se to those skilled in the art, for example a Chauvin Arnoux Ma 200 current clamp. Particularly preferably, an oscilloscope is used.
- the elements present in the first circuit i. at least first coil Sl, first signal generator SGI, means for measuring current and optionally further elements are preferably connected in series to a first circuit.
- the electrical connections in the first circuit can generally be carried out in any manner known to those skilled in the art.
- the electrical connections are preferably carried out by cable connections, in particular shielded BNC connections.
- Step (B) of the method comprises providing a second coil S2 having a second inductance L2 connected to a voltage measuring device, the coils S1 and S2 being arranged spatially relative to each other so that they lie on the same axis of rotation and between them a free space is formed.
- all coils which appear suitable to the person skilled in the art can be used.
- Coils with 1 to 400, preferably 100 to 200, windings are preferably used as the coil S2. More preferably, these windings are on a ring made of an electrically insulating material, such as plastic from polyamide.
- the Diameter of the coil S2 is preferably 20 to 40 mm.
- a coil is used in which windings are wound around a fixed core, for example a ferrite core.
- the winding of the coil S2 is preferably made of an electrically conductive wire, in particular a copper wire. More preferably, the electrically conductive wire is electrically insulated on the outside, for example by an electrically insulating plastic coating.
- the length of the wire from which the winding of the first coil S2 is constructed is preferably 1 to 2 m.
- the coil S2 has an inductance L2 of, for example, 0.2 to 9.0 ⁇ 10 3 ⁇ , preferably 200 to 800 ⁇ , on.
- the inductance L2 of the coil S2 is preferably selected such that there are no resonances in the frequency range to be measured due to the intrinsic capacitance of the preferably used BNC cables.
- the coil S2 is arranged such that the coils S1 and S2 are spatially arranged relative to each other such that they lie on the same axis of rotation and a free space is formed between them.
- "on the same axis of rotation” means that the two coils are spatially positioned relative to one another so that a common axis passes through the centers of the annular coils
- the coil S1 it is further preferred for the coil S1 to be located above the coil S2, wherein a clearance is formed between the two coils, which is created such that a sample of the potentially shielding material can be introduced into it Distance, that is the free space, between the coils Sl and S2 40 to 60%, preferably 45 to 55%, for example 50%, of the diameter of the coil 1.
- the free space has a width or height of 10 to 60
- a device for voltage measurement is present in the second circuit, for example by devices known per se to the person skilled in the art, for example by means of ei n HAMEG HM022 Digital Oscilloscope.
- the elements present in the second circuit ie at least second coil S2, high-resistance terminating resistor and possibly further elements are preferably connected in series with a second circuit.
- the device for voltage measurement is preferably connected in parallel.
- the electrical connections for voltage measurement on coil 2 can generally be made in any manner known to those skilled in the art.
- the electrical connections are preferably carried out by cable connections, in particular shielded BNC connections.
- the first circuit and the voltage measurement at coil S2 are each formed by means of shielded electrical connections, preferably cable connections, in particular shielded BNC connections.
- Step (C) of the method comprises introducing a sample of the potential shielding product into the free space.
- This step (C) can generally be carried out in any manner known to those skilled in the art.
- the introduction can be done manually or automatically.
- the method is preferably performed to measure the shielding properties of flat materials, i. H .
- the materials to be tested have a much greater extension in length and width compared to their thickness.
- the sample to be examined preferably has a square base area. More preferably, the edge length of this square at least five times the diameter of the coil 1.
- the sample has a thickness of 0.01 to 6 mm.
- the potentially shielding product is a flat steel product, for example a hot or cold strip or boards obtained therefrom.
- the sample to be measured is fixed between the two coils for the measurement by methods known to those skilled in the art, for example by means of a corresponding permanently installed guide in the free space between the two coils S 1 and S 2.
- the distance between the sample and the coils S 1 and S 2 is preferably up to 40 mm in each case. It is inventively preferred that the sample to be examined is grounded during the measurement.
- Step (D) of the method comprises the generation of a sinusoidal voltage with a frequency v of 0, 1 to 1000 kHz, preferably 0, 1 to 400 kHz, more preferably 0, 1 to 200 kHz, by the first signal generator SG 1 in the first Coil Sl.
- Step (D) of the method is preferably carried out after the sample to be measured has been introduced into the free space between the two coils.
- the sinusoidal voltage generated in the coil S1 is an alternating voltage with a frequency v of preferably 0.1 to 200 kHz, see also step (A) of the method.
- step (D) is a so-called measuring frequency is generated in coil S1 at a certain current value ⁇ ⁇ v ⁇
- the second coil S2 measures the voltage U2 () generated by the resulting magnetic field by mathematically comparing these values in the presence of the sample to be measured with The values in the absence of the sample can be deduced from the screen factor of the sample.
- Step (E) of the method involves measuring the current ⁇ ⁇ ⁇ v ⁇ in the first circuit.
- Devices and methods for measuring the current strength ⁇ ⁇ ⁇ v) in the first circuit are known per se to those skilled in the art, for example a Chauvin Arnoux Ma 200 current clamp.
- the current li () is measured in the first circuit while the sample to be measured is between the coils Sl and S2.
- the obtained measured values can be noted manually.
- the device for measuring the current intensity li (v) in the first circuit is connected to a data processing system, so that the storage and processing of the data obtained is carried out electronically.
- Step (F) of the method includes measuring the voltage U2 () on coil 2.
- Devices and methods for measuring the voltage U2 () on coil 2 are known per se to the person skilled in the art, for example a HAMEG HMO2022 digital oscilloscope. It is essential to the invention that the voltage U 2 (v) at coil 2 is measured, while the sample to be measured is located between the coils S 1 and S 2. The obtained measured values can be noted manually.
- the device for measuring the voltage U 2 (v) is connected to coil 2 with a data processing system, so that the storage and processing of the data obtained is carried out electronically.
- Step (G) of the method comprises determining the screen attenuation S (v) via the equation of the formula (I) where lio () is the current in the first circuit and U20CV) is the voltage on coil 2, each without a sample inserted.
- Step (G) of the method is preferably carried out with the aid of a data processing system.
- Methods and devices for this purpose are known per se to the person skilled in the art.
- the material according to the invention is preferably used in a thickness of 0.01 to 6 mm, preferably 0.03 to 4 mm.
- the present invention therefore preferably relates to the material according to the invention, wherein it has a thickness of 0.01 to 6 mm, preferably 0.03 to 4 mm, during the measurement.
- the shielding material according to the invention can be used uncoated.
- the material according to the invention is used coated in a preferred embodiment.
- Corresponding coatings which protect against corrosion in particular, are known per se to a person skilled in the art and are, for example, inorganic coatings such as metals or ceramics or organic coatings based on polymers. Preference is given to using metallic coatings based on zinc or aluminum or zinc alloys or aluminum alloys in combination with silicon and / or magnesium.
- the present invention therefore preferably relates to the material according to the invention, wherein it has a surface coating.
- the coating can be applied to the material according to the invention in general by all methods known to the person skilled in the art, for example electrolytic coating, hot dip process or vapor deposition.
- the coating can be present on one or both sides. If the shielding material of the invention provided with a corresponding surface coating and used, it is advantageously better protected against corrosion. Furthermore, the inventive shielding material also at elevated temperatures, for example above 200 ° C and at most up to ca. 770 ° C, improved shielding compared to materials known in the art.
- the present invention also relates to a method for shielding electromagnetic radiation, dynamic or static electrical and / or dynamic or static magnetic fields, wherein the source and / or sink are at least partially surrounded by a material according to the invention.
- the source and / or sink of the electromagnetic radiation, of the dynamic or static electrical and / or dynamic or static magnetic fields is at least partially surrounded by the shielding material according to the invention at least partially.
- a partial surrounding is useful or necessary, for example, if the source and / or sink must be accessible during operation, for example, by supply and / or discharge and / or operation.
- the source and / or sink is completely surrounded by the shielding material according to the invention. Details and preferred embodiments, which have been mentioned to the material according to the invention, should also be applied here accordingly.
- the material according to the invention is used for shielding electromagnetic radiation, it has, for example, a thickness of 0.01 to 600 mm, preferably 0.01 to 150 mm, particularly preferably 0.01 to 6 mm.
- the present invention also relates to the use of the material according to the invention for shielding electromagnetic radiation, dynamic or static electrical and / or dynamic or static magnetic fields.
- Electromagnetic, dynamic or static electrical and / or dynamic or static magnetic fields are intentionally or unwillingly generated by the use and operation of certain magnetic, electrical or electronic devices.
- the present invention relates to the use according to the invention, wherein in addition a high mechanical strength of the material is given, for example expressed by a yield strength of at least 200 MPa, preferably at least 400 MPa, more preferably at least 750 MPa.
- a particular advantage of the present invention is therefore that a material can be provided which according to the invention preferably also has good mechanical properties in addition to a high shielding effect.
- the present invention relates to the use according to the invention, wherein buildings, in particular security-relevant buildings, rooms, laboratories, production facilities, server cabinets, Switch cabinets, plug connections, holders and housings, for example for power electronics, computers, communication electronics, alarm systems, security technology, fire and gas detectors, protective covers, charging stations, kitchen appliances, medical devices, electronic devices, preferably in automobiles, electronic components, radios, magnetic applications, for example Permanent magnets, electronic components and / or batteries, such as non-rechargeable batteries or accumulators, be shielded or the shielding material as ceiling and / or wall panels, as floor coverings, as cable channels, is used in metrology.
- buildings in particular security-relevant buildings, rooms, laboratories, production facilities, server cabinets, Switch cabinets, plug connections, holders and housings, for example for power electronics, computers, communication electronics, alarm systems, security technology, fire and gas detectors, protective covers, charging stations, kitchen appliances, medical devices, electronic devices, preferably in automobiles, electronic components, radios, magnetic applications, for example Permanent magnets, electronic components and / or
- FIG. 1 shows a device with which the umbrella factor S (v) according to the invention can be measured as a schematic drawing which is not true to scale.
- Inventive materials 1 to 9 are prepared from melts according to Table 1 and processed according to methods known in the art to give sheets.
- the microstructural compositions of materials 1 to 9 are shown in Table 2.
- sheets are introduced into a device according to FIG. 1 for determining the screen factor S (v).
- the screen factor S (v) is determined according to the method mentioned in the description.
- the results are shown in Table 3.
- Characteristic mechanical characteristics are shown in Table 4.
- Table 1 Melt analyzes of the materials 1 to 8 according to the invention, remainder Fe and unavoidable impurities
- Table 2 Microstructure compositions of the materials 1 to 8 according to the invention
- the shielding material according to the invention can advantageously be used for shielding electromagnetic radiation, dynamic or static electrical and / or dynamic or static magnetic fields.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dispersion Chemistry (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017216982.6A DE102017216982A1 (de) | 2017-09-25 | 2017-09-25 | Monolithische eisenbasierte Abschirmprodukte |
| PCT/EP2018/075403 WO2019057798A1 (de) | 2017-09-25 | 2018-09-20 | Monolithische eisenbasierte abschirmprodukte |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3688204A1 true EP3688204A1 (de) | 2020-08-05 |
Family
ID=63683864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18778414.5A Pending EP3688204A1 (de) | 2017-09-25 | 2018-09-20 | Monolithische eisenbasierte abschirmprodukte |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3688204A1 (de) |
| DE (1) | DE102017216982A1 (de) |
| WO (1) | WO2019057798A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110599876B (zh) * | 2019-09-11 | 2021-05-07 | 齐齐哈尔大学 | 一种演示带电体的几个基本内容的方法 |
| CN110599877B (zh) * | 2019-09-11 | 2021-06-04 | 齐齐哈尔大学 | 带电体的几个基本内容的演示装置 |
| DE102022111444A1 (de) | 2022-05-09 | 2023-11-09 | Thyssenkrupp Steel Europe Ag | Verwendung eines Kohlenstoffstahlblechs für elektromagnetische Abschirmzwecke |
| CN116043126B (zh) * | 2023-01-09 | 2024-06-18 | 鞍钢股份有限公司 | 一种高强高韧高熵钢及制造方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5019191A (en) * | 1988-12-22 | 1991-05-28 | Sumitomo Metal Industries, Ltd. | Magnetic steel plate for use as a magnetic shielding member and a method for the manufacture thereof |
| EP0854669B1 (de) * | 1997-01-20 | 2003-03-26 | Daido Steel Company Limited | Weichmagnetisches Pulver für electromagnetische und magnetische Abschirmung und Abschirmungen mit dieses Pulver |
| JPH1192886A (ja) * | 1997-09-19 | 1999-04-06 | Nippon Steel Corp | Tvブラウン管用磁気シールド鋼板およびその製造方法 |
| JP2001107201A (ja) * | 1999-10-14 | 2001-04-17 | Nippon Steel Corp | 磁気シールド構造用鋼板およびその製造方法 |
| JP4047502B2 (ja) * | 1999-10-14 | 2008-02-13 | 新日本製鐵株式会社 | 磁気シールド構造用鋼板およびその製造方法 |
| US20050000596A1 (en) * | 2003-05-14 | 2005-01-06 | Ak Properties Inc. | Method for production of non-oriented electrical steel strip |
| TWI248977B (en) * | 2003-06-26 | 2006-02-11 | Nippon Steel Corp | High-strength hot-rolled steel sheet excellent in shape fixability and method of producing the same |
| KR20070084133A (ko) * | 2004-11-11 | 2007-08-24 | 닛테쓰 스미킨 고한 가부시키가이샤 | 컬러 음극선관용 자기 실드 강판 |
-
2017
- 2017-09-25 DE DE102017216982.6A patent/DE102017216982A1/de active Pending
-
2018
- 2018-09-20 WO PCT/EP2018/075403 patent/WO2019057798A1/de not_active Ceased
- 2018-09-20 EP EP18778414.5A patent/EP3688204A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102017216982A1 (de) | 2019-03-28 |
| WO2019057798A1 (de) | 2019-03-28 |
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