Vacuumschmelze Gmbh

Vacuumschmelze Gmbh & Company Kg

Ottmar Roth

Hartwin Weber

Gernot Hausch

Matthias Herget

Matthias Katter

Joachim Gerster

Christian Radeloff

Jens Diehl

Lutz Hinrich

The invention relates to a magnetic strip, wherein the strip has a magnetic easy axis which is axially parallel to a transverse axis of the strip. The strip is cut to length, from strip material made of a semi-hard magnetic crystalline alloy, along a transverse axis of the strip material substantially corresponding to a length (l) of the strip. The strip material has a magnetic easy axis which runs axially parallel to the transverse axis of the strip material.

Magnetic strip, sensor comprising a magnetic strip and process for the manufacture of a magnetic strip

A magnetic article comprises, in total, elements in amounts capable of providing at least one (LaM)(FeTY)Xphase and less than 0.5 Vol % impurities, wherein 0&#x2266;a&#x2266;0.9, 0&#x2266;b&#x2266;0.2, 0.05&#x2266;c&#x2266;0.2, &#x2212;1&#x2266;d&#x2266;+1, 0&#x2266;e&#x2266;3, M is one or more of the elements Ce, Pr and Nd, T is one or more of the elements Co, Ni, Mn and Cr, Y is one or more of the elements Si, Al, As, Ga, Ge, Sn and Sb and X is one or more of the elements H, B, C, N, Li and Be. The magnetic article comprises a permanent magnet.

Magnetic article and method for producing a magnetic article

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 NiMFe, 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&#x2266;a&#x2266;25% by weight, and 2% by weight&#x2266;b&#x2266;8% by weight. The activation strip has a coercive force Hof 10 A/cm to 25 A/cm and a remanence Bof at least 0.9 T.

Marker for a magnetic theft protection system and method for its production

A seamless, rotationally symmetrical hollow blank formed by a non-cutting operation from a deformable permanently magnetic alloy is provided, said alloy consisting essentially of 5.0 to 20.0 percent by weight cobalt, 20.0 to 35.0 percent by weight chromium, for the remainder iron and impurities caused by melting and/or by chance. The seamless hollow body is suitable in particular for use in hysteresis clutches, hysteresis brakes, and position measuring devices. Furthermore, non-cutting shaping processes for producing the seamless rotationally symmetrical hollow body are provided, with roller spinning being preferred.

Rotationally symmetrical hollow body made of a deformable permanently magnetic alloy and its use and production process

Disclosed are a marker for a magnetic theft protection system, comprising:

A semi-hard magnetic alloy for activation strips in magnetic anti-theft security systems is disclosed that contains 8 to 25 weight % Ni, 1.0 to 4.5 weight % Al, 0.5 to 3 weight % Ti and the balance iron.

Marker for use in a magnetic anti-theft security system

Display Element for Employment in a Magnetic Anti-theft Security System A semi-hard magnetic alloy for activation strips in magnetic anti-theft security systems is disclosed that contains 8 to 25 weight % Ni, 1.5 to 4.5 weight % Al, 0.5 to 3 weight % Ti and balance iron. The alloy is distinguished over known, employed alloys by excellent magnetic properties and a high resistance to corrosion. Further, the inventive alloy can be excellently cold-worked before the annealing.

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Gruendau, Germany

Ottmar Roth