公开(公告)号：US20240006121A1

公开(公告)日：2024-01-04

申请号：US18255537

申请日：2021-10-12

Applicant: HENGDIAN GROUP DMEGC MAGNETICS CO., LTD

Inventor： Xianghua Han ,  Zhihong Jin ,  Cong Zhang ,  Jun Xu ,  Linke Wang ,  Ning Zhang

IPC: H01F41/02 ,  H01F41/00 ,  H01F27/28 ,  H01F1/24

CPC classification number: H01F41/0246 ,  H01F1/24 ,  H01F27/2823 ,  H01F41/005

Abstract: An integrated co-fired inductor and preparation method therefor, comprising: filling a mold cavity with a magnetic powder, embedding at least one wire in the magnetic powder, wherein the two ends extend out of the mold cavity, sequentially performing compression molding and heat treatment to obtain a magnetic core, and bending and tinning the wire extending out of the magnetic core to obtain the co-fired inductor. The preparation method uses an integrated mold forming process to prepare the inductor to avoid an assembly process involving an excessive number of components; heat treatment is performed after the integral forming process, stress is fully released, material hysteresis loss is reduced, and the loss of the device under light load conditions is reduced; no extra gap exists between the wire and the magnetic core, air gaps are uniformly distributed within the magnetic core, and the vibration noise of eddy current loss is reduced.

公开(公告)号：US20240029952A1

公开(公告)日：2024-01-25

申请号：US18255538

申请日：2021-11-24

Applicant: HENGDIAN GROUP DMEGC MAGNETICS CO., LTD

Inventor： Xianghua Han ,  Cong Zhang ,  Zhihong Jin ,  Jun Xu ,  Linke Wang ,  Ning Zhang

IPC: H01F41/02 ,  H01F27/255 ,  H01F27/28

CPC classification number: H01F41/0246 ,  H01F27/255 ,  H01F27/2823

Abstract: An integrated co-fired inductor and preparation method therefor, comprising: batch filling a magnetic powder in the mold cavity, embedding at least one wire into one layer of the magnetic powder, the two ends of the wire extending out of the mold cavity, sequentially performing compression molding and heat treatment to obtain a magnetic core, and bending and tinning the wire to obtain the co-fired inductor. The preparation method uses an integrated mold forming process to prepare the inductor to avoid an assembly process involving an excessive number of components; heat treatment is performed after the integral forming process, stress is fully released, material hysteresis loss is reduced, and the loss of the device under light load conditions is reduced; no extra gap exists between the wire and the magnetic core, air gaps are uniformly distributed within the magnetic core, and the vibration noise of eddy current loss is reduced.

公开(公告)号：US20230395292A1

公开(公告)日：2023-12-07

申请号：US18249216

申请日：2021-10-20

Applicant: HENGDIAN GROUP DMEGC MAGNETICS CO., LTD

Inventor： Meng Fang ,  Yangzhong Du ,  Junwei Lu ,  Haifei Lou ,  Linke Wang ,  Yuchao Du

IPC: H01F1/153 ,  C22C45/00 ,  B22F1/065 ,  B22F9/08 ,  C22C33/06 ,  B22F1/102 ,  B22F1/16 ,  B22F1/145 ,  B22F3/10 ,  C22C38/54 ,  C22C38/46 ,  C22C38/42 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  B22F3/24 ,  B22F5/10

CPC classification number: H01F1/15341 ,  B22F2003/248 ,  B22F1/065 ,  B22F9/082 ,  C22C33/06 ,  B22F1/102 ,  B22F1/16 ,  B22F1/145 ,  B22F3/1007 ,  C22C38/54 ,  C22C38/46 ,  C22C38/42 ,  C22C38/04 ,  C22C38/02 ,  C22C38/002 ,  B22F3/24 ,  B22F5/106 ,  C22C2200/02 ,  B22F2999/00 ,  B22F2301/35 ,  B22F2304/10 ,  B22F2998/10 ,  B22F2009/0828 ,  B22F2302/45 ,  B22F2302/256 ,  C22C2202/02 ,  C22C45/008

Abstract: The present application provides an iron-based amorphous alloy powder, a preparation method therefor and an application thereof. The iron-based amorphous alloy powder comprises a Cu element, and the particle shape of the iron-based amorphous alloy powder is spherical. The preparation method comprises the following steps: (1) smelting a master alloy to obtain iron-based amorphous alloy molten iron, the master alloy comprising a Cu element; and (2) treating the iron-based amorphous alloy molten iron obtained in step (1) by means of water-gas combined atomization to obtain the iron-based amorphous alloy powder.