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A method for the production of ueberzuegen a helicoidal guide on the substrate surface by applying a mixture of a particulate non-magnetic coating agent and a particulate magnetic material in a magnetic field
A method for the production of ueberzuegen a helicoidal guide on the substrate surface by applying a mixture of a particulate non-magnetic coating agent and a particulate magnetic material in a magnetic field
Particulate material is coated onto a solid substrate surface by exposing the surface in a confined volume containing small magnet elements mixed with the particulate material, and establishing within an effective distance of the confined volume, a magnetic field varying in direction with time. The magnetic field is of sufficient intensity to propel the magnet elements and the particulate material at a velocity which causes the mixture to impinge upon the surface and the particulate material to adhere thereto as a layer.
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