Consolidation by severe plastic deformation in compaction of magnetic powder cores and bonded magnets

2014 Fiscal Year Final Research Report

• Project/Area Number: 25820368
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Material processing/Microstructural control engineering
• Research Institution: Toyohashi University of Technology
• Principal Investigator: MAENO Tomoyoshi 豊橋技術科学大学, 工学(系)研究科(研究院), 助教 (80505397)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 圧粉成形 / 強加工 / 粉末固化 / 焼付き抑制

Outline of Final Research Achievements

The magnetic powder cores and the bonded magnets are consolidated with a binder such as an epoxy resin after the compaction. However the magnetic performance is decreased since the proportion of the magnetic powder in a magnet is reduced by the addition of the binder. Reduction of the binder will lead to a reduction in strength of the products and an increase of the friction during ejection after compaction. To improve strength of the bonded magnets and magnetic powder cores having low percentage of the binder. A consolidation process by severe plastic deformation in compaction was developed. In addition, the friction during ejection was reduced by changing the inner diameter of a die before and after compaction using a shrinkage ring.

Free Research Field

塑性加工