FIELD: electricity.
SUBSTANCE: invention may be used to manufacture permanent magnets in the form of ferromagnetic toroids with high coercive force, vectors of magnetisation of which are slant-circular, for magnetic shock absorbers instead of piston shock absorbers of oscillating motions on the basis of two matched homonymic magnetic poles of toroids with slant-circular magnetisation, rotation of one of which relative to another one in one direction is executed easily, and in the opposite one - with efforts. Method consists in placement of toroid into solenoid, axis of which matches axis of toroid symmetry, and sending a pulse of unidirectional current via solenoid, value of which corresponds to magnetic saturation of toroid. Inductance coil, which is serially connected to solenoid and source of magnetisation current pulse is wound onto toroid until its material is saturated, afterwards winding is removed from the latter. Variation of angle value between vector of magnetisation outgoing from arbitrary point of toroid surface and vertically restored from such a point is set by ratio of intensities of magnetic fields created in solenoid and coil wound onto toroid.
EFFECT: invention provides for slant-circular magnetisation of toroid and setting of required angle of magnetisation vector for any point of surface of toroid end relative to vertical line pulled from such a point on surface of toroid end.
2 cl, 5 dwg
Authors
Dates
2010-06-10—Published
2008-12-23—Filed