2results about How to "Reduce molding pressure" patented technology

The application discloses a low-pressure forming high-frequency low-loss SMC magnetic powder core and a preparation method and application thereof, wherein amorphous iron-based alloy fine powder is added into iron-silicon-chromium coarse powder, different contents of nano calcium carbonate are added into the compounded magnetic powder, and then high-content epoxy resin is melted and mixed in a mixing mill to obtain a high-fluidity mixing material.After crushing, a low-pressure forming high-frequency low-loss SMC granular material is obtained, which is formed by hot pressing under low pressure, and the obtained annular magnetic powder core is annealed in a vacuum oven, so that the low-pressure high-frequency low-loss SMC magnetic powder core is obtained.Through the method, the SMC magnetic powder core with a forming pressure less than 50 MPa and a magnetic loss less than 2100 kW / m 3 under the conditions of 20 mT and 2 MHz can be obtained.

Provided in the present application are a power inductor and a preparation method therefor. The preparation method comprises the process steps of slurry preparation, slurry casting, coil winding, coil arrangement, slurry pouring, warm-water pressing, curing treatment, UV adhesive film lamination, cutting, etc. A small-size power inductor can be simply and efficiently prepared, the preparation method is particularly suitable for ultrathin inductors, the phenomena of a short circuit, an open circuit, etc., appearing due to the damage to copper wires that is caused by using dry-pressing integral forming technology are avoided, and the problem of a single box body being easily damaged during casting is solved, thereby facilitating industrial applications.