Patents Assigned to Vacuumschmelze GmbH & Co. KG
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Patent number: 11945033Abstract: A method is provided for the heat treatment of an object comprising at least one rare-earth element with a high vapor pressure. One or more objects comprising at least one rare-earth element with a high vapor pressure are arranged in an interior of a package. An external source of the at least one rare-earth element is arranged so as to compensate for the evaporation of this same rare-earth element from the object and/or to increase the vapor pressure of the rare-earth element in the interior of the package, and the package is heat treated.Type: GrantFiled: March 31, 2022Date of Patent: April 2, 2024Assignee: VACUUMSCHMELZE GMBH & CO. KGInventors: Kaan Üstüner, Matthias Katter, Christoph Brombacher, Daniela Benedikt
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Patent number: 11881350Abstract: A laminated core comprising a plurality of lamination sheets made of a soft magnetic alloy is provided. The lamination sheets have a main surface and a thickness d. The main surfaces of the lamination sheets are stacked one on top of another in a direction of stacking. Adjacent lamination sheets are joined to one another by a plurality of substance-to-substance joints, the joints being filler-free and entirely surrounded by the main surfaces of the adjacent lamination sheets.Type: GrantFiled: February 2, 2021Date of Patent: January 23, 2024Assignee: VACUUMSCHMELZE GMBH & CO. KGInventors: Frederic Bäcker, Jens Diehl, Dominik Fackelmann
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Patent number: 11837391Abstract: A sintered R2M17 magnet is provided that comprises at least 70 Vol % of a Sm2M17 phase, wherein R is at least one of the group consisting of Ce, La, Nd, Pr, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yt, Lu and Y, and M comprises Co, Fe, Cu and Zr. In an area of the R2M17 sintered magnet of 200 by 200 ?m viewed in a Kerr micrograph, an areal proportion of demagnetised regions after application of an internal opposing field of 1200 kA/m is less than 5% or less than 2%.Type: GrantFiled: July 26, 2022Date of Patent: December 5, 2023Assignee: Vacuumschmelze GmbH & Co. KGInventors: Kaan Üstüner, Matthias Katter, Christoph Brombacher
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Patent number: 11827961Abstract: In an embodiment a FeCoV alloy is provided with a composition consisting essentially of 30 wt %?Co?55 wt %, 0.4 wt %?V?1.5 wt %, 0 wt %?Nb?0.15 wt %, 0.0 wt %?Ta?0.20 wt %, 0.04 wt %?Nb+0.5·Ta?0.15 wt %, max. 0.02 wt % C, 0.0 wt %?Si?0.50 wt %, 0.0 wt %?Al?0.50 wt %, max. 0.5 wt % Mn, max. 0.5 wt % Cr, max. 0.5 wt % Ni, max. 0.5 wt % W, max. 0.5 wt % Mo, max. 0.5 wt % Zr, the rest Fe and up to 1 wt % of other impurities, and having a phase transition from a ferritic ?-phase region to a mixed ferritic/austenitic ?+?-region that takes place at a transition temperature T(?/?+?), where T(?/?+?)?900° C., preferably ?920° C., preferably ?940° C.Type: GrantFiled: December 17, 2021Date of Patent: November 28, 2023Assignee: VACUUMSCHMELZE GMBH & CO. KGInventors: Niklas Volbers, Michael Müller, Jan Frederik Fohr
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Patent number: 11758704Abstract: A panel for a shielding cabin having a base plate made of a non-magnetic material and at least one sheet layer made of a soft magnetic material is provided. The base plate is stuck to at least one sheet layer by a viscoelastic adhesive. The adhesive has a glass transition temperature of ?80° C. to ?60° C.Type: GrantFiled: June 11, 2019Date of Patent: September 12, 2023Assignee: VACUUMSCHMELZE GMBH & CO. KGInventors: Gerd Rauscher, Markus Hein, Maximilian Staab, Niklas Volbers
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Patent number: 11747366Abstract: A method for non-contact current measurement is described. According to one exemplary embodiment, the method comprises the alternating magnetizing of a magnetic core to a maximum value in the positive and negative directions by controlling at least one secondary conductor which is magnetically coupled to the magnetic core; generating an oscillator signal which alternates between a first state and a second state, whereby the alternating magnetization processes are indicated; and determining a first measured value for an effective primary current which flows through at least one primary conductor which is magnetically coupled to the magnetic core, based on the times that the oscillator signal dwells in the first and the second state.Type: GrantFiled: January 18, 2022Date of Patent: September 5, 2023Assignee: VACUUMSCHMELZE GMBH & CO. KGInventor: Steffen Boettcher
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Patent number: 11723182Abstract: 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° C. to 600° 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.Type: GrantFiled: October 30, 2018Date of Patent: August 8, 2023Assignee: VACUUMSCHMELZE GMBH & CO. KGInventors: Christian Polak, Matthias Schmidt
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Patent number: 11660666Abstract: A method for producing a strip using a rapid solidification technology is provided. A melt is poured onto a moving outer surface of a rotating casting wheel, the melt is solidified on the outer surface and a strip is formed. A gaseous jet is directed at the moving outer surface and the outer surface of the casting wheel is worked with the jet. The jet comprises CO2 and at least part of this CO2 strikes the moving outer surface of the casting wheel in a solid state.Type: GrantFiled: February 17, 2021Date of Patent: May 30, 2023Assignee: VACUUMSCHMELZE GMBH & CO. KGInventors: Thomas Hartmann, Robert Schulz
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Patent number: 11654498Abstract: A process for producing an amorphous ductile brazing foil is provided. According to one example embodiment, the method includes providing a molten mass, and rapidly solidifying the molten mass on a moving cooling surface with a cooling speed of more than approximately 105° C./sec to produce an amorphous ductile brazing foil. A process for joining two or more parts is also provided. The process includes inserting a brazing foil between two or more parts to be joined, wherein the parts to be joined have a higher melting temperature than that the brazing foil to form a solder joint and the brazing foil comprises an amorphous, ductile Ni-based brazing foil; heating the solder joint to a temperature above the liquidus temperature of the brazing foil to form a heated solder joint; and cooling the heated solder joint, thereby forming a brazed joint between the parts to be joined.Type: GrantFiled: June 5, 2020Date of Patent: May 23, 2023Assignee: VACUUMSCHMELZE GMBH & CO. KGInventors: Thomas Hartmann, Dieter Nuetzel
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Patent number: 11629413Abstract: 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.Type: GrantFiled: August 13, 2020Date of Patent: April 18, 2023Assignee: VACUUMSCHMELZE GMBH & CO. KGInventors: Christian Polak, Thomas Strache
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Patent number: 11623271Abstract: Amorphous metal foil and method for the production of an amorphous metal foil using a rapid solidification technology is provided. An amorphous metal foil having a width of 2 mm to 300 mm, a thickness of less than 20 ?m and a maximum of 50 holes per square metre is also provided.Type: GrantFiled: August 20, 2020Date of Patent: April 11, 2023Assignee: VACUUMSCHMELZE GMBH & CO. KGInventor: Thomas Hartmann
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Patent number: 11616183Abstract: An alloy is provided that consists essentially of (TixTayVzAcNb1-x-y-z-c)(Fe1-dMnd)a(Sb1-eSne)b, wherein 0.06?x?0.24, 0.01?y?0.06, 0/08?z?0.4, 0.9?(a, b)?1.1, 0?c?0.05, 0?d?0.05 and 0?e?0.1 and A is one or more of the elements in the group consisting of Zr, Hf, Sc, Y, La, and up to 5 atom % impurities.Type: GrantFiled: July 19, 2019Date of Patent: March 28, 2023Assignee: VACUUMSCHMELZE GMBH & CO. KGInventor: Michael Müller
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Patent number: 11573280Abstract: A device which can be used for current measurement is described hereinafter. According to one exemplary embodiment, the device comprises the following: a coil carrier extending along a longitudinal axis having a base body which in a central region has a section having reduced cross-sectional area, which is smaller than the cross-sectional area outside the central region, and a magnetic field probe having a ferromagnetic sensor strip, which is fastened to the coil carrier in the section having reduced cross-sectional area, and having a sensor coil which is wound around the coil carrier in the central region so that it encloses the sensor strip. The device also comprises a film which at least partially covers the section having reduced cross-sectional area. A secondary winding is wound around the coil carrier, wherein the secondary winding is wound around the film in the section having reduced cross-sectional area.Type: GrantFiled: October 18, 2021Date of Patent: February 7, 2023Assignee: VACUUMSCHMELZE GMBH & CO. KGInventors: Steffen Boettcher, Daniel Jordan
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Patent number: 11459635Abstract: A device for the production of a metallic strip using a rapid solidification technology is provided. The device includes a movable heat sink with an external surface onto which a melt is poured and on which the melt solidifies to produce the strip, and which device includes a rolling device which can be pressed against the external surface of the movable heat sink while the heat sink is in motion.Type: GrantFiled: January 15, 2020Date of Patent: October 4, 2022Assignee: VACUUMSCHMELZE GMBH & CO. KGInventor: Robert Schulz
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Patent number: 11456095Abstract: A sintered R2M17 magnet is provided that comprises at least 70 Vol % of a Sm2M17 phase, wherein R is at least one of the group consisting of Ce, La, Nd, Pr, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yt, Lu and Y, and M comprises Co, Fe, Cu and Zr. In an area of the R2M17 sintered magnet of 200 by 200 ?m viewed in a Kerr micrograph, an areal proportion of demagnetised regions after application of an internal opposing field of 1200 kA/m is less than 5% or less than 2%.Type: GrantFiled: May 4, 2020Date of Patent: September 27, 2022Assignee: VACUUMSCHMELZE GMBH & CO. KGInventors: Kaan Üstüner, Matthias Katter, Christoph Brombacher
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Patent number: 11450479Abstract: An alloy having a formula FeaCobNicCudMeSifBgXh is 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?b?4, 0?c<4, 0.5?d?2, 2.5?e?3.5, 14.5?f?16, 6?g?7, h<0.5, and 1?(b+c)?4.5, where a+b+c+d+e+f+g=100. The alloy has a nanocrystalline microstructure, a saturation magnetostriction of |?s|?1 ppm, a hysteresis loop with a central linear part, and a permeability (?) of 10,000 to 15,000.Type: GrantFiled: March 2, 2020Date of Patent: September 20, 2022Assignee: VACUUMSCHMELZE GMBH & CO. KGInventors: Giselher Herzer, Viktoria Budinsky, Christian Polak
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Patent number: 11383315Abstract: A method for plating a stainless steel substrate is provided. According to one embodiment, the method comprises sandblasting at least one joint surface of a stainless steel substrate and treating the joint surface of the stainless steel substrate with an aqueous solution (acid bath) which contains sulfuric acid, nitric acid and hydrofluoric acid. The stainless steel substrate is then rinsed with hydrochloric acid. The method further includes galvanic deposition of a nickel plating on the joining surface of the stainless steel substrate and the subsequent deposition of a tin layer on the nickel-coated joining surface of the stainless steel substrate.Type: GrantFiled: January 31, 2020Date of Patent: July 12, 2022Assignee: VACUUMSCHMELZE GMBH & CO. KGInventors: Lothar Zapf, Natalia Ankuda, Manfred Reuther
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Patent number: 11300591Abstract: For contactless current measurement at a first primary conductor that is configured to conduct a first primary current having a first current strength, and at a second primary conductor that is configured to conduct a second primary current having a second current strength, a ring-shaped magnetic core that encircles the first primary conductor and the second primary conductor detects the total magnetic field in the magnetic core and generates from the total magnetic field detected in the magnetic core a signal corresponding to the superposition of the first current strength and the second current strength. The first or second magnetic field component or individually both are also detected, and from the detected first or second magnetic field component or from both, a signal corresponding to the first current strength or a signal corresponding to the second current strength or both are generated.Type: GrantFiled: December 11, 2018Date of Patent: April 12, 2022Assignee: VACUUMSCHMELZE GMBH & CO. KGInventors: Steffen Boettcher, Holger Schwenk
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Patent number: 11261513Abstract: A method of producing a strip from a CoFe alloy is provided. A slab consisting substantially of 35 wt %?Co?55 wt %, 0 wt %?V?3 wt %, 0 wt %?Ni?2 wt %, 0 wt %?Nb?0.50 wt %, 0 wt %?Zr+Ta?1.5 wt %, 0 wt %?Cr?3 wt %, 0 wt %?Si?3 wt %, 0 wt %?Al?1 wt %, 0 wt %?Mn?1 wt %, 0 wt %?B?0.25 wt %, 0 wt %?C?0.1 wt %, the remainder being Fe and up to 1 wt % of impurities, is hot rolled and then quenched from a temperature above 700° C. to less than 200° C. The hot rolled strip is cold rolled. The cold rolled strip is stationary annealed to produce an intermediate strip, and the intermediate strip is continuously annealed.Type: GrantFiled: March 22, 2020Date of Patent: March 1, 2022Assignee: VACUUMSCHMELZE GMBH & CO. KGInventor: Niklas Volbers
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Patent number: 11253951Abstract: A magnetic component with a rare-earth magnet is provided. The rare-earth magnet has a bronze coating that partially or entirely covers the surface of the rare-earth magnet. Further, the tin coating partially or entirely covers the bronze coating. A production process for the magnetic component as well as a soldering method for connecting the magnetic component with a substrate is also provided.Type: GrantFiled: December 18, 2019Date of Patent: February 22, 2022Assignee: VACUUMSCHMELZE GMBH & CO. KGInventors: Lothar Zapf, Natalia Ankuda, Manfred Reuther