A magnetization device includes an outer casing, a base, a rotatable hood, an object-carrying seat, and a drive mechanism. The rotatable hood includes a receiving space. The rotatable hood has a circumferential wall that includes a pair of magnets mounted thereto, with one N pole and one S pole of the magnets being pointing toward the receiving space of the rotatable hood to induce magnetic lines of force and a magnetic field therebetween. The object-carrying seat is disposed in the receiving space of the rotatable hood to support a magnetized object. The drive mechanism drives the rotatable hood to rotate around and outside the magnetized object, such that the magnetized object is kept stationary and the magnets, and thus the magnetic lines of force and the magnetic field, are driven by the rotatable hood to rotate around the magnetized object.

A magnetization device includes an outer casing, a base, a rotatable hood, an object-carrying seat, and a drive mechanism. The rotatable hood includes a receiving space. The rotatable hood has a circumferential wall that includes a pair of magnets mounted thereto, with one N pole and one S pole of the magnets being pointing toward the receiving space of the rotatable hood to induce magnetic lines of force and a magnetic field therebetween. The object-carrying seat is disposed in the receiving space of the rotatable hood to support a magnetized object. The drive mechanism drives the rotatable hood to rotate around and outside the magnetized object, such that the magnetized object is kept stationary and the magnets, and thus the magnetic lines of force and the magnetic field, are driven by the rotatable hood to rotate around the magnetized object.

This invention provides methods for fabricating a hard or soft magnet with tailorable magnetic and crystallographic orientations. Methods are disclosed to individually tailor three-dimensional voxels for selected crystallographic orientations and, independently, selected magnetic orientations with location specificity throughout a magnet. Some variations provide a method of making a magnet, comprising: providing a feedstock composition containing magnetic or magnetically susceptible materials; exposing the feedstock composition to an energy source for melting, thereby generating a first melt layer; solidifying the first melt layer in the presence of an externally applied magnetic field, thereby generating a magnetic metal layer containing a plurality of individual voxels; optionally repeating to generate a plurality of solid layers; and recovering a magnet comprising the magnetic metal layer(s), wherein the externally applied magnetic field has a magnetic-field orientation that is selected to control a magnetic axis and a crystallographic texture within the magnetic metal layer(s).

An apparatus and method for magnetizing a magnetizable ink. The apparatus can include a first pair of first and second cylindrical magnetic arrays defining a first gap. The first and second cylindrical magnetic arrays can each have alternately spaced magnetized sections that are spaced apart axially by flux conducting elements. The apparatus can include a second pair of third and fourth cylindrical magnetic arrays defining a second gap. The third and fourth cylindrical magnetic arrays can each have alternately spaced magnetized sections that are spaced apart axially by flux conducting elements. The apparatus can include a third pair of fifth and sixth cylindrical magnetic arrays defining a third gap. The fifth and sixth magnetic array can have alternately spaced magnetized sections that are spaced apart axially by flux conducting elements. The cylindrical magnetic arrays can be positioned to receive a moving web substrate through the first, second, and third gaps.

An apparatus and method for magnetizing a magnetizable ink. The apparatus can include a first pair of first and second cylindrical magnetic arrays defining a first gap. The first and second cylindrical magnetic arrays can each have alternately spaced magnetized sections that are spaced apart axially by flux conducting elements. The apparatus can include a second pair of third and fourth cylindrical magnetic arrays defining a second gap. The third and fourth cylindrical magnetic arrays can each have alternately spaced magnetized sections that are spaced apart axially by flux conducting elements. The apparatus can include a third pair of fifth and sixth cylindrical magnetic arrays defining a third gap. The fifth and sixth magnetic array can have alternately spaced magnetized sections that are spaced apart axially by flux conducting elements. The cylindrical magnetic arrays can be positioned to receive a moving web substrate through the first, second, and third gaps.

An input device comprising a processor(s), an input element, an electropermanent magnet (EPM) assembly including: a permanent magnet operable to generate a magnetic field; and a magnetizing assembly configured to set a magnetic field generated by the permanent magnet, a first ferromagnetic element, and a second ferromagnetic element. The first ferromagnetic element is configured to part and move away from the second ferromagnetic element as the input element is depressed. When the EPM assembly magnetizes the permanent magnet to a first polarity, the first and second ferromagnetic elements are magnetically attracted to each other and provide an attracting that magnetically opposes the first and second ferromagnetic elements from parting, and when the EPM assembly magnetizes the permanent magnet to a second polarity, the first and second ferromagnetic elements are not magnetically attracted to each other and do not magnetically oppose the first and second ferromagnetic elements from parting.

An integrated circuit for demagnetizing an inductive load includes a first switch to control current supplied by a voltage supply to the inductive load. A Zener diode includes an anode connected to a control terminal of the first switch and a cathode connected to the voltage supply. A second switch includes a control terminal and first and second terminals. A temperature sensing circuit is configured to sense a temperature of the first switch and to generate a sensed temperature. A comparing circuit includes inputs that receive a reference temperature and the sensed temperature and an output connected to the control terminal of the second switch.

Processes for applying magnetic fields to articles such as a layer or layer-coated articles, and more particularly to coatings having graphite particles, preferably for manufacture of negative electrodes having aligned graphite particles, for example for fast-charging lithium-ion batteries. The application of magnetic fields may be continuous. For this, magnetic tools with permanent magnets may be used for applying magnetic fields, wherein an article is moved relative to a magnetic tool. Application of magnetic field is made before the initiation of a drying phase and/or during a drying phase.

Systems, methods, and a computer readable medium are provided for demagnetizing a pipe within an operational pipeline. An inline demagnetization device can be positioned in a first location within a pipe of an operational pipeline. The inline demagnetization device can be positioned via a plurality of positioning mechanisms operable to position the inline demagnetization device at one or more locations within the pipe. The inline demagnetization device can transmit magnetic fields into the pipe at the first location via a plurality of magnetic field conductors configured within the inline demagnetization device. The transmitted magnetic field can cause a reduction of magnetization present in the pipe. The inline demagnetization device can be positioned in a second location to further reduce the magnetization present at the second location.

A device (2) for demagnetizing and for measuring the magnetic signature of a stationary hull (4) and for simulating a magnetic field, including a demagnetization coil assembly (8), a magnetic field sensor assembly (10) and a simulation coil assembly (12a, 12b, 12c), which can be positioned next to the hull (4) in a horizontal manner on one side and the cross-sectional areas of the demagnetization coils (8) and of the simulation coils (12a, 12b, 12c) being disposed in the longitudinal direction of the hull (4) with horizontally oriented surface normals. The demagnetization coils (8) produce an alternating magnetic field; the simulation coils (12a, 12b, 12c) produce a stationary simulated magnetic field in all three dimensions.