Punch Edge Topological Design for Reduction of Work Hardening Damage in Shearing of Non-Oriented Electrical Steel Sheets.

Ryoma Okada, Kentaro Ito, Tatsuya Funazuka, Tatsuhiko Aizawa, Tomomi Shiratori

Abstract read

In one paragraph

Article in Materials (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

5 authors.

Ryoma OkadaGraduate School of Science and Engineering, University of Toyama, Toyama 930-8555, Japan.

Kentaro ItoGraduate School of Science and Engineering, University of Toyama, Toyama 930-8555, Japan.

Tatsuya FunazukaAcademic Assembly Faculty of Engineering, University of Toyama, Toyama 930-8555, Japan.ORCID 0000-0001-8743-2874

Tatsuhiko AizawaSurface Engineering Design Laboratory, Shibaura Institute of Technology, Tokyo 144-0045, Japan.ORCID 0000-0003-4480-6260

Tomomi ShiratoriAcademic Assembly Faculty of Engineering, University of Toyama, Toyama 930-8555, Japan.ORCID 0000-0003-4432-1829

Funding

The Public Benefit Trust Ame Hisaharu Toyama, Japan 601195

6 · The paper itself

Abstract

A new shearing tool is necessary to reduce the iron loss of motor cores by minimizing the work hardening damage on the sheared non-oriented electrical steel sheets. The punch edge topology and the clearance between the punch and the die were controlled to investigate their influence on the sheared surface condition and the work hardening damage of steel sheets. A non-oriented electrical steel sheet with the thickness of 500 µm was used and sheared at the speed of 5 mm/s. After that, the sheared surface was investigated. In particular, hardness mapping was utilized to quantitatively analyze the work-hardened area of the sheared steel sheets and the dissipation of the plastic work. Among the four punch edge topological configurations explored, the nano-grooved punch employed straight along the shearing direction reduced the damage dealt to the sheared steel sheets and the plastic dissipation work to one-third compared to conventional punches.

Indexed as

non-oriented electrical steelpunchingshearing

Identifiers

PMID40004401

DOI10.3390/ma18040878

PMCPMC11857100

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