Invention Grant
- Patent Title: Method for producing coated magnetic powder, method for producing dust core, and method for producing electromagnetic component
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Application No.: US16306003Application Date: 2017-05-17
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Publication No.: US11718901B2Publication Date: 2023-08-08
- Inventor: Asako Watanabe , Tomoyuki Ueno
- Applicant: Sumitomo Electric Industries, Ltd. , Sumitomo Electric Sintered Alloy, Ltd.
- Applicant Address: JP Osaka
- Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.,SUMITOMO ELECTRIC SINTERED ALLOY, LTD.
- Current Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.,SUMITOMO ELECTRIC SINTERED ALLOY, LTD.
- Current Assignee Address: JP Osaka; JP Takahashi
- Agency: Xsensus LLP
- Priority: JP 16107750 2016.05.30
- International Application: PCT/JP2017/018541 2017.05.17
- International Announcement: WO2017/208824A 2017.12.07
- Date entered country: 2018-11-30
- Main IPC: C22C38/02
- IPC: C22C38/02 ; H01F1/26 ; H01F41/02 ; B22F1/102 ; B22F1/16 ; C22C38/06 ; H01F1/147 ; B22F3/02 ; B22F3/24 ; H01F41/04
Abstract:
A method for producing a coated magnetic powder in which particle surfaces of a soft magnetic powder are coated with a silicone resin includes a preparation step of preparing a silicone emulsion by mixing a silicone resin with water containing a surfactant and dispersing the silicone resin in the water, an application step of applying the silicone emulsion onto particle surfaces of a soft magnetic powder, and a drying step of drying the soft magnetic powder after the silicone emulsion is applied.
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