Abstract

The invention relates to a method for producing pressed permanent magnets, comprising the following steps: providing a mixture of at least one magnetic powder and one duroplastic binder and pressing said mixture to form a moulding body. In order to obtain a durable and particularly reliable protection against oxidation and corrosion, the moulding body is impregnated with an acid-solvent mixture in an impregnation bath before hardening of the duroplastic binder, whereby the entire surface of the permanent magnet is covered with a reaction layer.

IPC Classes  ?

• H01F 1/053 - Alloys characterised by their composition containing rare earth metals
• H01F 1/08 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
• H01F 1/09 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials mixtures of metallic and non-metallic particlesMagnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metallic particles having oxide skin
• H01F 1/113 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites in the form of particles in a bonding agent

Abstract

The invention relates to a magnetic core made from a wound soft magnetic strip, for low frequency applications designed to have an increased relative permeability &mgr;r by means of reduced mechanical tensions. The above is achieved by means of coating at least one side of the soft magnetic strip with a static friction reducing material which is partly burnt off during the thermal treatment of the magnetic core. The residue thereof remains such that in cross-section the magnetic core has an alternating layer of soft magnetic material and a layer of residue of a static friction reducing material.

IPC Classes  ?

• H01F 1/147 - Alloys characterised by their composition
• H01F 3/02 - Cores, yokes or armatures made from sheets
• H01F 3/04 - Cores, yokes or armatures made from strips or ribbons

Abstract

A magnetic component for a magnetically actuated fuel injection device is provided. The magnetic component is formed of a corrosion resistant soft magnetic alloy consisting essentially of, in weight percent, 3%< Co <20%, 6%

IPC Classes  ?

• C22C 38/10 - Ferrous alloys, e.g. steel alloys containing cobalt
• C22C 38/18 - Ferrous alloys, e.g. steel alloys containing chromium
• C22C 38/30 - Ferrous alloys, e.g. steel alloys containing chromium with cobalt
• H01F 1/12 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
• F01L 25/08 - Drive, or adjustment during operation, of distribution or expansion valves by non-mechanical means by electric or magnetic means
• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet
• F02D 41/00 - Electrical control of supply of combustible mixture or its constituents
• F02M 37/00 - Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatusArrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
• F02P 1/00 - Installations having electric ignition energy generated by magneto- or dynamo-electric generators without subsequent storage