Invention Grant
US08943677B2 Method for joining core laminations by adhesive force to form a soft-magnetic laminated core
有权
用于通过粘合力连接芯片叠层以形成软磁层压芯的方法
- Patent Title: Method for joining core laminations by adhesive force to form a soft-magnetic laminated core
- Patent Title (中): 用于通过粘合力连接芯片叠层以形成软磁层压芯的方法
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Application No.: US13257033Application Date: 2009-03-26
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Publication No.: US08943677B2Publication Date: 2015-02-03
- Inventor: Joachim Gerster , Witold Pieper , Harald Staubach , Dominik Fackelmann
- Applicant: Joachim Gerster , Witold Pieper , Harald Staubach , Dominik Fackelmann
- Applicant Address: DE Hanau
- Assignee: Vacuumschmelze GmbH & Co. KB
- Current Assignee: Vacuumschmelze GmbH & Co. KB
- Current Assignee Address: DE Hanau
- Agency: Dickinson Wright PLLC
- International Application: PCT/IB2009/051264 WO 20090326
- International Announcement: WO2010/109272 WO 20100930
- Main IPC: H01F3/04
- IPC: H01F3/04 ; H01F7/06 ; C22C38/14 ; C22C38/12 ; H01F3/02 ; C22C30/00 ; H02K1/02 ; H01F1/18 ; H01F41/02 ; C21D8/12 ; H02K15/02 ; C22C38/10 ; C22C19/07

Abstract:
A method for joining core laminations by adhesive force to form a soft-magnetic laminated core by applying a coating that is wettable with epoxy resin to top sides and undersides of each sheet. The sheets are separated into core laminations made of soft-magnetic sheets, which are stacked to form a core lamination stack, and a cured adhesive introduced in a state of low viscosity into interstices between the core laminations. The core lamination stack has intermediate layers between the core laminations. For this purpose, the core laminations comprise a final-annealed, crystalline CoFe alloy, an adhesive-wettable top side and an adhesive-wettable underside. Together with the intermediate layers, the core laminations form a dimensionally accurate laminated core. The laminated core has a substantially adhesive-free contour consisting of contour surfaces of the core laminations. The adhesive is solvent-free in its low-viscosity state.
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