Vacuumschmelze Gmbh & Company Kg

Christian Polak

Giselher Herzer

Viktoria Budinsky

Jivan Kapoor

Matthias Schmidt

Mie Marsilius

Thomas Strache

A method for producing soft magnetic strip material for roll tape-wound cores with the following steps: preparing a band-shaped material, applying a heat-treatment temperature to the band-shaped material, and applying a tensile force to the temperature-applied band-shaped material in one longitudinal direction of the band-shaped material in order to produce a tensile stress in the band-shaped material, to produce the soft magnetic strip material from the band-shaped material, the method, moreover, comprising determining at least one magnetic measurement value of the soft magnetic strip material that has been produced and controlling the tensile force for setting the tensile stress in a reaction to the determined magnetic measurement value. Furthermore, a device for carrying out the method and a roll tape-wound core produced by means of the method are made available.

Method and device for producing soft magnetic strip material for strip ring cores

A method for manufacturing a shielding film is provided. The method includes providing a band of an amorphous soft magnetic alloy; thermally treating the band at a temperature of 500&#xb0; C. to 600&#xb0; C. for 1 minute to 1 hour under an N2- or H2-containing atmosphere and under the Earth's magnetic field, thereby creating a nanocrystalline soft magnetic band with a round hysteresis loop; applying an adhesive layer to at least one side of the band; and wherein the band is first applied to a substrate, then thermally treated, after which an adhesive film is applied to the band and, finally, the band is structured by breaking.

Shielding film and method for producing a shielding film

A method for the production of a metal strip is provided. The method includes providing an amorphous metal strip having a first main surface and a second, opposing main surface. The first and/or the second main surface are treated with a wet-chemical etching process and/or a photochemical etching process.

Amorphous metal strip and method for producing an amorphous metal strip

An alloy having a formula FeCoNiCuMSiBXis provided. M is at least one of V, Nb, Ta, Ti, Mo, W, Zr, Cr, Mn and Hf; a, b, c, d, e, f, g are in at. %; X denotes impurities and optional elements P, Ge and C; and a, b, c, d, e, f, g, h satisfy the following:0&#x2264;&#x2264;4,0&#x2264;&#x3c;4,0.5&#x2264;&#x2264;2,2.5&#x2264;&#x2264;3.5,14.5&#x2264;&#x2264;16,6&#x2264;&#x2264;7,&#x3c;0.5, and1&#x2264;()&#x2264;4.5, The alloy has a nanocrystalline microstructure, a saturation magnetostriction of |&#x3bb;|&#x2264;1 ppm, a hysteresis loop with a central linear part, and a permeability (&#x3bc;) of 10,000 to 15,000.

Alloy and method for producing a magnetic core

A conveyance system for tensioning to post-treat a rapidly-solidified metal strip, and a method for post-treating the metal strip with the conveyance system is provided. The conveyance system comprises a tension roller assembly and a tensioning assembly, between which the metal strip is conveyed to be continuously post-treated under a predetermined tensile stress. The tension roller assembly comprises a single drive roller and a freely-rotating pressing roller. The metal strip is conveyed over an angle of wrap &#x3b1; on the drive roller, and, with respect to the drive roller, the pressing roller is arranged at a contact point of the metal strip that defines one end of an angle of wrap &#x3b1;. The method can include bridging the distance between the tensioning assembly and the tension roller assembly amid the insertion of the metal strip into the tension roller assembly, after a post-treatment region in space and in time.

Conveyance system for tensioning in order to post-treat a rapidly-solidified metal strip, and post-treatment method

An alloy is provided which consists of FeCuNbMTSiBZand up to 1 at % impurities, M being one or more of the elements Mo, Ta and Zr, T being one or more of the elements V, Mn, Cr, Co and Ni, Z being one or more of the elements C, P and Ge, 0 at %&#x2264;a&#x3c;1.5 at %, 0 at %&#x2264;b&#x3c;2 at %, 0 at %&#x2264;(b+c)&#x3c;2 at %, 0 at %&#x2264;d&#x3c;5 at %, 10 at %&#x3c;x&#x3c;18 at %, 5 at %&#x3c;y&#x3c;11 at % and 0 at %&#x2264;z&#x3c;2 at %. The alloy is configured in tape form and has a nanocrystalline structure in which at least 50 vol % of the grains have an average size of less than 100 nm, a hysteresis loop with a central linear region, a remanence ratio Jr/Js of &#x3c;0.1 and a coercive field strength Hto anisotropic field strength Ha ratio of &#x3c;10%.

Alloy, magnetic core and process for the production of a tape from an alloy

A method producing soft magnetic strip material for roll tape-wound cores with the following steps: preparing a band-shaped material, applying a heat-treatment temperature to the band-shaped material, and applying a tensile force to the temperature-applied band-shaped material in one longitudinal direction of the band-shaped material in order to produce a tensile stress in the band-shaped material, to produce the soft magnetic strip material from the band-shaped material, the method, moreover, comprising determining at least one magnetic measurement value of the soft magnetic strip material that has been produced and controlling the tensile force for setting the tensile stress in a reaction to the determined magnetic measurement value. Furthermore, a device for carrying out the method and a roll tape-wound core produced by means of the method are made available.

Conveyance system for tensioning in order to post-treat a rapidly-solidified metal strip, and post-treatment method is provided. The invention relates to a conveyance system (to) for tensioning in order to post-treat a rapidly-solidified metal strip (), and a post-treatment method. For this purpose, the conveyance system comprises a tension roller assembly (to) and a tensioning assembly (), between which the metal strip () is conveyed in order to be continuously post-treated under a predetermined tensile stress. The tension roller assembly (to) comprises a single drive roller () and a freely-rotating pressing roller (). The metal strip () is conveyed over an angle of wrap &#x3b1; on the drive roller, and, with respect to the drive roller (), the pressing roller () is arranged at a contact point () of the metal strip () that defines one end of an angle of wrap &#x3b1;.

An alloy of FeCuNbMTSiBZand up to 1 atomic % impurities; M is one or more of Mo or Ta, T is one or more of V, Cr, Co or Ni and Z is one or more of C, P or Ge, wherein 0.0 atomic %&#x2264;a&#x3c;1.5 atomic %, 0.0 atomic %&#x2264;b&#x3c;3.0 atomic %, 0.2 atomic %&#x2264;c&#x2264;4.0 atomic %, 0.0 atomic %&#x2264;d&#x3c;5.0 atomic %, 12.0 atomic %&#x3c;x&#x3c;18.0 atomic %, 5.0 atomic %&#x3c;y&#x3c;12.0 atomic % and 0.0 atomic %&#x2264;z&#x3c;2.0 atomic %, and wherein 2.0 atomic %&#x2264;(b+c)&#x2264;4.0 atomic %, produced in the form of a strip and having a nanocrystalline structure in which at least 50% by volume of the grains have an average size of less than 100 nm, a remanence ratio J/J&#x3c;0.02, Jbeing the remanent polarization and Jbeing the saturation polarization, and a coercitive field strength Hwhich is less than 1% of the anisotropic field strength Hand/or less than 10 A/m.

Alloy, magnet core and method for producing a strip from an alloy

A shielding film for an apparatus with a device for wireless charging is provided which comprises several stacked layers. The layers each have several strips of a nanocrystalline soft magnetic alloy arranged on an adhesive layer, the nanocrystalline soft magnetic alloy having a round hysteresis loop. The strips of adjacent layers are offset with respect to one another.

A soft magnetic core is provided, in which permeabilities that occur at least two different locations of the core are different. A method for producing a soft magnetic core that has different permeabilities at at least two different locations is also provided.

Soft magnetic core with position-dependent permeability

Soft magnetic core, in which permeabilities that occur at least two different locations of the core are different.

An alloy is provided which consists of FeCuNbMTSiBZand up to 1 at % impurities, M being one or more of the elements Mo, Ta and Zr, T being one or more of the elements V, Mn, Cr, Co and Ni, Z being one or more of the elements C, P and Ge, 0 at %&#x2266;a&#x3c;1.5 at %, 0 at %&#x2266;b&#x3c;2 at %, 0 at %&#x2266;(b+c)&#x3c;2 at %, 0 at %&#x2266;d&#x3c;5 at %, 10 at %&#x3c;x&#x3c;18 at %, 5 at %&#x3c;y&#x3c;11 at % and 0 at %&#x2266;z&#x3c;2 at %. The alloy is configured in tape form and has a nanocrystalline structure in which at least 50 vol % of the grains have an average size of less than 100 nm, a hysteresis loop with a central linear region, a remanence ratio Jr/Js of &#x3c;0.1 and a coercive field strength Hto anisotropic field strength Hratio of &#x3c;10%.

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Blankenbach, Germany

Christian Polak