3 results about "Ferrite core" patented technology

A tapered ferrite core having a solid or hollow cylindrical shape with larger length than outer diameter, and comprising a ground taper portion in at least one end portion, the taper portion having ground streaks extending in the longitudinal direction of the ferrite core, can be formed by centerless-grinding a rotating ferrite core by a rotating grinder.

The invention provides a preparation method of a ceramic tile applicable to wireless charging and the ceramic tile. The preparation method comprises the following steps: S1, sintering a soft ferrite core or a magnetic block; S2, crushing the sintered soft ferrite core or magnetic block into particles with different particle sizes, and dividing the particles with different particle sizes into coarse particles and fine particles; S3, uniformly mixing an adhesive for use; S4, strongly mixing the coarse particles, the fine particles and the uniformly mixed adhesive to obtain a uniformly mixed fluid; S5, by a vacuum and high pressure die casting technology, pressing the uniformly mixed fluid into a ceramic tile blank; S6, sintering and curing the ceramic tile blank into the ceramic tile applicable to wireless charging. A magnetic separating piece required for high-power wireless charging, which is produced from the ceramic tile, has the characteristics of large area, integration, good surface flatness and high dimensional accuracy; a produced charging device is impact-resistant, is adaptable to superhigh power and is high in charging efficiency.