Vacuumschmelze Gmbh & Company Kg

Vacuumschmelze Gmbh

Jörg Petzold

Volker Kleespies

Johannes Binkofski

Giselher Herzer

Johannes Beichler

Detlef Otte

Hans-Rainer Hilzinger

Wulf Günther

Roman Klinger

Werner Loges

Volker Kieespies

Luigi Caprarella

Oliver Friedrich

Holger Wink

Hans-Rainier Hilzinger

Günther Wulf

A method is provided for the production of a wound nanocrystalline magnetic core in which a nanocrystalline metal strip made of (FeM)CuSiBM'Xis pre-wound to form a first coil. An insulating foil is provided that is coated with an adhesive on at least one side. An adhesive is applied to the nanocrystalline metal strip to laminate the insulating foil onto the metal strip and thereby to stabilise the metal strip as it is wound off the coil. The laminated nanocrystalline metal strip and the insulating foil are bifilar wound to form a bifilar, layer-insulated coil.

Bifilar layer-insulated magnetic core and method for the production of a wound nanocrystalline magnetic core

A magnet core for low-frequency applications and method for producing a magnet core for low-frequency applications is provided. The magnet core is made of a spiral-wound, soft-magnetic, nanocrystalline strip. The strip essentially has the alloy composition FeCoCuNbSiBC, wherein a, b, c, d, e and f are stated in atomic percent and 0&#x2264;a&#x2264;1; 0.7&#x2264;b&#x2264;1.4; 2.5&#x2264;c&#x2264;3.5; 14.5&#x2264;d&#x2264;16.5; 5.5&#x2264;e&#x2264;8 and 0&#x2264;f&#x2264;1, and cobalt may wholly or partially be replaced by nickel. The magnet core has a saturation magnetostriction &#x3bb;of &#x3bb;&#x3c;2 ppm, a starting permeability &#x3bc;of &#x3bc;&#x3e;100 000 and a maximum permeability &#x3bc;of &#x3bc;&#x3e;400 000. In addition, a sealing metal oxide coating is provided on the surfaces of the strip.

Magnet core for low-frequency applications and method for producing a magnet core for low-frequency applications

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.

Method for producing nanocrystalline magnet cores, and device for carrying out said method

The invention relates to a transductor regulator with a magnetic core which is made up of a nanocrystalline alloy which is almost free of magnetorestriction. The core has as low cyclic magnetization losses as possible and as rectangular a hysterisis cycle as possible. Said alloy has the composition: FeaCobCucM'dSixByM&#x2033;z, M&#x2032; representing an element from the group V, Nb, Ta, Ti, Mo, W, Zr, Hf or a combination of these and M&#x2033; representing an element from the group C, P, Ge, As, Sb, In, O, N or a combination of these and the following conditions applying: a+b+c+d+x+y+z=100%, with a=100%&#x2212;b&#x2212;c&#x2212;d&#x2212;x&#x2212;y&#x2212;z, 0&#x2266;b&#x2266;15, 0.5&#x2266;c&#x2266;2, 0.1&#x2266;d&#x2266;6, 2&#x2266;x&#x2266;20, 2&#x2266;y&#x2266;18, 0&#x2266;z&#x2266;10 and x+y&#x3e;18. The inventive transductor regulators are particularly advantageously used in motor vehicle voltage supplies, rail power supplies or in aircraft power supplies.

Magnetic amplifier choke (magamp choke) with a magnetic core, use of magnetic amplifiers and method for producing softmagnetic cores for magnetic amplifiers

Pulse transformer for a u-interface operating according to the echo

Growing community of inventors

Bruchköbel, Germany

Jörg Petzold