Patents Assigned to Vacuumschmelze GmbH
  • Article for Magnetic Heat Exchange and Method for Manufacturing an Article for Magnetic Heat Exchange
    Publication number: 20120043066
    Abstract: An article (1) for magnetic heat exchange extends in a first direction (3) and in a second direction (5) generally axially perpendicular to said first direction (3). The article (1) comprises at least one magnetocalorically active phase (2). The average thermal conductivity of the article (1) is anisotropic.
    Type: Application
    Filed: May 16, 2008
    Publication date: February 23, 2012
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Georg Werner Reppel, Matthias Katter
  • Article for Magnetic Heat Exchange and a Method of Fabricating a Working Component for Magnetic Heat Exchange
    Publication number: 20120045633
    Abstract: An article for magnetic heat exchange comprises a monolithic working component comprising two or more portions. The two or more portions comprise amounts of La, Fe, Si and of one or more elements T and R suitable to produce a La1-aRa(Fe1-x-yTySix)13Hz phase, wherein T is one or more of the elements from the group consisting of Mn, Co, Ni and Cr and R is one or more of the elements from the group consisting of Ce, Nd, Y and Pr. The amount of the one or more elements T and R and the amount of Si is selected for each of the two or more portions to provide the two or more portions with differing Curie temperatures and, preferably, a density, d, within a range of ±5% of an average density, dav, of a total number of portions.
    Type: Application
    Filed: February 11, 2011
    Publication date: February 23, 2012
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Matthias KATTER, Volker Zellmann, Alexander Barcza
  • Working Component for Magnetic Heat Exchange and Method of Producing a Working Component for Magnetic Refrigeration
    Publication number: 20120043497
    Abstract: A working component for magnetic heat exchange comprises a magnetocalorically active phase comprising La1-aRa(Fe1-x-yTyMx)13Hz, a hydrogen content, z, 90% or higher of a hydrogen saturation value, zsat, and values of a, x and y selected to give a Curie temperature Tc. M is one or more of the elements from the group consisting of Al and Si, T is one or more of the elements from the group consisting of Co, Ni, Mn, Cr, Cu, Ti and V and R is one or more of the elements from the group consisting of Ce, Nd, Y and Pr. Tcmax is a Curie temperature of a La1-aRa(Fe1-x-yTyMx)13Hz phase comprising a hydrogen content z=zsat and said selected values of a, x and y. The working component comprises the Tc wherein (Tcmax?Tc)?20K.
    Type: Application
    Filed: February 11, 2011
    Publication date: February 23, 2012
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Matthias KATTER, Volker Zellmann, Alexander Barcza
  • Laminate Stack Comprising Individual Soft Magnetic Sheets, Electromagnetic Actuator, Process for Their Manufacture and Use of a Soft Magnetic Laminate Stack
    Publication number: 20120038439
    Abstract: A laminate stack having individual soft magnetic sheets. The individual sheets are involutely curved in the laminate stack. Each individual sheet has a first long side, a second long side opposite the first long side, a first short side and a second short side opposite the first short side. The first long side has a recess, said recess being rectangular and equidistant from the first short side, the second short side and the second long side when the individual sheet is in its uncurved state.
    Type: Application
    Filed: August 26, 2010
    Publication date: February 16, 2012
    Applicant: Vacuumschmelze GmbH & Co., KG
    Inventors: Joachim Gerster, Herbert Hoehn
  • Device and Method for the Production of a Metallic Strip
    Publication number: 20120040206
    Abstract: A device for the production of a metallic strip using a rapid solidification technology is specified, which device comprises 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 comprises a rolling device which can be pressed against the external surface of the movable heat sink while the heat sink is in motion.
    Type: Application
    Filed: July 13, 2011
    Publication date: February 16, 2012
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventor: Robert SCHULZ
  • Lacquer Composition and Use Thereof
    Publication number: 20120034458
    Abstract: The present invention relates to a lacquer composition, particularly an adhesive and corrosion-protective lacquer for rare earth magnets, on the basis of an epoxy resin mixture, a setting accelerator, a silane-based epoxy functional adhesion promoter and a solvent or a solvent mixture, wherein the lacquer composition includes 5 to 20 wt. %, with respect to the amount of solid resin in the base of the epoxy resin mixture, of a highly viscous epoxy resin based on bisphenol-A with an elastomer content of more than 30 wt. %.
    Type: Application
    Filed: February 2, 2011
    Publication date: February 9, 2012
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventor: Lothar Zapf
  • Non-ageing permanent magnet from an alloy powder and method for the production thereof
    Patent number: 8105443
    Abstract: A method for the production of pressed permanent magnets comprises the following steps: A mixture of at least one magnetic powder and a thermosetting binder is provided and pressed to produce a moulded body. In order to obtain a permanent and particularly reliable protection against oxidation and corrosion, the moulded body is impregnated with an acid and solvent mixture in an impregnating bath before the cure of the thermosetting binder, whereby the entire surface of the permanent magnet is coated with a reaction layer [FIG. 1].
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: January 31, 2012
    Assignee: Vacuumschmelze GmbH & Co.
    Inventors: Georg Werner Reppel, Volker Zellmann
  • Method for Producing a Current Metering Device
    Publication number: 20120013331
    Abstract: A method for producing a current metering device with current conductor optionally made of aluminum or aluminum alloy, which has a middle section in the form of a bar and two end sections with flattened areas, and is bent between one end section at a time and the middle section, a magnetic module which has a bushing which holds the current conductor, and two copper or copper alloy sleeves which are applied at least to parts of the end sections of the current conductor.
    Type: Application
    Filed: January 7, 2011
    Publication date: January 19, 2012
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventor: Markus BRUNNER
  • IRON-BASED BRAZING FOIL AND METHOD FOR BRAZING
    Publication number: 20120006522
    Abstract: Disclosed are amorphous, ductile brazing foils with a composition consisting essentially of FeRestNiaCrbSicBdPe, wherein 0 atomic %?a<25 atomic %; 0 atomic %?b?15 atomic %; 1 atomic %?c?10 atomic %; 4 atomic %?d?15 atomic %; 1 atomic %?e?9 atomic %; any impurities?0.5 atomic %; rest Fe, wherein 2 atomic %?c+e?10 atomic % and 15 atomic %?c+d+e?22 atomic %, or consisting essentially of FeRestNiaCrbMofCugSicBdPe, wherein 0 atomic %?a<25 atomic %; 0 atomic %?b?15 atomic %; 1 atomic %<c?10 atomic %; 4 atomic %?d?15 atomic %; 1 atomic %?e?9 atomic %; 0 atomic %<f?3 atomic %; 0 atomic %?g?3 atomic %; any impurities?0.5 atomic %; rest Fe, wherein 2 atomic %?c+e?10 atomic % and 15 atomic %?c+d+e?22 atomic %. Also disclosed are brazed objects formed using these foils, particularly exhaust gas recirculation coolers and oil coolers, and methods for making the brazing foils and for making the brazed parts.
    Type: Application
    Filed: September 21, 2011
    Publication date: January 12, 2012
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Thomas HARTMANN, Dieter Nuetzel
  • Iron-based brazing foil and method for brazing
    Patent number: 8052809
    Abstract: Disclosed are amorphous, ductile brazing foils with a composition consisting essentially of FeRestNiaCrbSicBdPe, wherein 0 atomic %?a<25 atomic %; 0 atomic %?b?15 atomic %; 1 atomic %?c?10 atomic %; 4 atomic %?d?15 atomic %; 1 atomic %?e?9 atomic %; any impurities?0.5 atomic %; rest Fe, wherein 2 atomic %?c+e?10 atomic % and 15 atomic %?c+d+e?22 atomic %, or consisting essentially of FeRestNiaCrbMofCugSicBdPe, wherein 0 atomic %?a<25 atomic %; 0 atomic %?b?15 atomic %; 1 atomic %<c?10 atomic %; 4 atomic %?d?15 atomic %; 1 atomic %?e?9 atomic %; 0 atomic %<f?3 atomic %; 0 atomic %?g?3 atomic %; any impurities?0.5 atomic %; rest Fe, wherein 2 atomic %?c+e?10 atomic % and 15 atomic %?c+d+e?22 atomic %. Also disclosed are brazed objects formed using these foils, particularly exhaust gas recirculation coolers and oil coolers, and methods for making the brazing foils and for making the brazed parts.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: November 8, 2011
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Thomas Hartmann, Dieter Nuetzel
  • Brazed Object and Process for Brazing Two or More Parts
    Publication number: 20110250470
    Abstract: The invention provides a process for brazing two or three parts. A braze with a composition consisting of NiresCraBbPcSid with 20 atomic percent<a<22 atomic percent; 1.2 atomic percent?b?3.6 atomic percent; 12.5 atomic percent?c?14.5 atomic percent; 0 atomic percent?d<1.5 atomic percent; incidental impurities?0.5 atomic percent; and residual Ni is inserted between two or more parts to be joined to form a joint, the parts to be joined having a higher melting temperature than the braze. The joint is heated to a temperature of between 1020° C. and 1070° C. and cooled to form a brazed joint between the parts.
    Type: Application
    Filed: April 8, 2011
    Publication date: October 13, 2011
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Thomas Hartmann, Dieter Nuetzel
  • Corrosion resistant magnetic component for a fuel injection valve
    Patent number: 8029627
    Abstract: A magnetic component for a magnetically actuated fuel injection device is formed of a corrosion resistant soft magnetic alloy consisting essentially of, in weight percent, 9%<Co<20%, 6%<Cr<15%, 0%?S?0.5%, 0%?Mn?4.5%, 0%?Al?2.5%, 0%?V?2.0%, 0%?Ti?2.0%, 0%?Mo?2.0%, 0%?Si?3.5%, 0%?C<0.05%, 0%?P<0.1%, 0%?N<0.5%, 0%?O<0.05%, 0%?B<0.01%, and the balance being essentially iron and having at least one of Al, V, Ti and Mo.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: October 4, 2011
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventor: Joachim Gerster
  • Marker for a magnetic theft protection system and method for its production
    Patent number: 8013743
    Abstract: Disclosed are markers for a magnetic theft protection system, which markers contain at least one oblong alarm strip made of an amorphous ferromagnetic alloy and at least one activation strip made of a molybdenum-free semi-hard magnetic alloy consisting essentially of NiaMbFeRest, wherein M is one or more of the elements from the group including Cr, W and V, and wherein a and b are weight percentages such that 15% by weight?a?25% by weight, and 2% by weight?b?8% by weight. The activation strip has a coercive force Hc of 10 A/cm to 25 A/cm and a remanence Br of at least 0.9 T.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: September 6, 2011
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Ottmar Roth, Hartwin Weber
  • Soft magnetic iron/cobalt/chromium-based alloy and process for manufacturing it
    Patent number: 8012270
    Abstract: A soft magnetic alloy consists essentially of 5 percent by weight?Co?30 percent by weight, 1 percent by weight?Cr?20 percent by weight, 0.1 percent by weight?Al?2 percent by weight, 0 percent by weight?Si?1.5 percent by weight, 0.017 percent by weight?Mn?0.2 percent by weight, 0.01 percent by weight?S?0.05 percent by weight where Mn/S is >1.7, 0 percent by weight?O?0.0015 percent by weight, und 0.0003 percent by weight?Ce?0.05 percent by weight, 0 percent by weight?Ca?0.005 percent by weight and the remainder iron, where 0.117 percent by weight?(Al+Si+Mn+V+Mo+W+Nb+Ti+Ni)?5 percent by weight.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: September 6, 2011
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Witold Pieper, Joachim Gerster
  • ARTICLE FOR MAGNETIC HEAT EXCHANGE AND METHOD OF FABRICATING AN ARTICLE FOR MAGNETIC HEAT EXCHANGE
    Publication number: 20110198069
    Abstract: An article for magnetic heat exchange comprising a magnetocalorically active phase with a NaZn13-type crystal structure is provided by hydrogenating a bulk precursor article. The bulk precursor article is heated from a temperature of less than 50° C. to at least 300° C. in an inert atmosphere and hydrogen gas only introduced when a temperature of at least 300° C. is reached. The bulk precursor article is maintained in a hydrogen containing atmosphere at a temperature in the range 300° C. to 700° C. for a selected duration of time, and then cooled to a temperature of less than 50° C.
    Type: Application
    Filed: May 6, 2009
    Publication date: August 18, 2011
    Applicant: Vacuumschmelze GmbH & Co., KG
    Inventors: Matthias Katter, Volker Zellmann
  • Powders for Rare Earth Magnets, Rare Earth Magnets and Methods for Manufacturing the Same
    Publication number: 20110171056
    Abstract: A powder consists essentially by weight, of 28.00?R?32.00%, where R is at least one rare earth element including Y and the sum of Dy+Tb>0.5, 0.50?B?2.00%, 0.50?Co?3.50%, 0.050?M?0.5%, where M is one or more of the elements Ga, Cu and Al, 0.25 wt %<O?0.5%, 0.15% or less of C, balance Fe.
    Type: Application
    Filed: March 24, 2011
    Publication date: July 14, 2011
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Rolf Blank, Matthias Katter, Werner Rodewald, Boris Wall
  • Corrosion Resistant Magnetic Component for a Fuel Injection Valve
    Publication number: 20110168799
    Abstract: A magnetic component for a magnetically actuated fuel injection device is formed of a corrosion resistant soft magnetic alloy consisting essentially of, in weight percent, 3%<Co<20%, 6%<Cr<15%, 0%?S?0.5%, 0%?Mo?3%, 0%?Si?3.5%, 0%?Al?4.5%, 0%?Mn?4.5%, 0%?Me?6%, where Me is one or more of the elements Sn, Zn, W, Ta, Nb, Zr and Ti, 0%?V?4.5%, 0%?Ni?5%, 0%?C<0.05%, 0%?Cu<1%, 0%?P<0.1%, 0%?N<0.5%, 0%?O<0.05%, 0%?B<0.01%, and the balance being essentially iron and the usual impurities.
    Type: Application
    Filed: January 18, 2011
    Publication date: July 14, 2011
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventor: Joachim GERSTER
  • Method for the production of an anisotropic magnetic powder and a bonded anisotropic magnet produced therefrom
    Patent number: 7972448
    Abstract: Disclosed herein is a method for the production of an anisotropic magnetic powder or a magnet produced from said powder, wherein a hydrogenating and dehydrogenating method is applied to the starting material in order to produce the powder. An anisotropic oriented magnetic material, more particularly magnetic scrap metal, is advantageously used as starting material so that the complicated use of a molten mass with isotropic distribution of the c axes of the hard metal crystals is not required. The result is an anisotropic material having a fine grain structure and a crystallographic orientation matching a TMXB phase formed during hydrogenation.
    Type: Grant
    Filed: November 27, 2003
    Date of Patent: July 5, 2011
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventor: Georg Werner Reppel
  • Article Comprising At Least One Magnetocalorically Active Phase and Method of Working an Article Comprising At Least One Magnetocalorically Active Phase
    Publication number: 20110151230
    Abstract: Article comprising at least one magnetocalorically active phase and method of working an article comprising at least one magnetocalorically active phase A method of working an article comprises providing an article comprising at least one magnetocalorically active phase having a magnetic phase transition temperature Tc and removing at least one portion of the article whilst the article remains at a temperature above the magnetic phase transition temperature Tc or below the magnetic phase transition temperature Tc.
    Type: Application
    Filed: October 1, 2008
    Publication date: June 23, 2011
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventor: Matthias Katter
  • Method for producing nanocrystalline magnet cores, and device for carrying out said method
    Patent number: 7964043
    Abstract: The invention relates to a method and to a device for carrying out a manufacturing process in which all magnet cores to be produced are first continuously crystallized. Depending on whether the required hysteresis loops should be round, flat or rectangular, the magnet cores are either immediately finished, that is enclosed in housings, conditioned to a rectangular hysteresis loop in a direct-axis magnetic field or to a flat hysteresis loop in a magnetic cross-field and then finished.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: June 21, 2011
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Jörg Petzold, Volker Kleespies, Hans-Rainer Hilzinger