High-speed blanking of an amorphous alloy

Murakoshi, Y.; Takahashi, Masaharu; Terasaki, M.; Sano, Takeshi; Matsuno, Kenichi; Takeishi, Hiroyuku

doi:10.1016/0924-0136(92)90224-g

Cited by 8 publications

(4 citation statements)

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“…In approach (ⅱ), the cutting of the amorphous alloy foil has been attempted with the development of mold processing machines and technologies [24][25][26][27][28][29][30]. Ref.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Evaluation of Switched Reluctance Motor Made by Blanking Amorphous Alloy Foil

et al. 2022

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This study reveals the characteristics of switched reluctance motors (SRMs) made by blanking (a) 20HX1300 of high grade lowiron-loss silicon steel (0.20mm thickness) and (b) 2605SA1 of amorphous alloy (0.025mm thickness). The blanking of the amorphous alloy is an innovative technology for the mass production of the high efficiency amorphous-alloy-motor. The impact of the processing methods on the magnetic properties are evaluated using the ring cores processed by the following methods: the wire cutting and the blanking. On the other hand, the experiment with the SRMs processed by the blanking evaluates the characteristics depending on the material. As first prototype, 70W-SRM (40mm thickness) is manufactured by blanking 1600 sheets of the amorphous alloy and adhesively laminating them. In the experiment, the motor efficiency of the amorphous-alloy-SRM is improved by 6.9 p.t. compared with that of silicon-steel-SRM. In addition, the iron loss of amorphous-alloy-SRM is reduced by 78.7% compared with that of silicon-steel-SRM.

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“…In approach (ⅱ), the cutting of the amorphous alloy foil has been attempted with the development of mold processing machines and technologies [24][25][26][27][28][29][30]. Ref.…”

Section: Introductionmentioning

confidence: 99%

“…In Ref. [29], the high-speed blanking of the amorphous alloy foil has been conducted and evaluated. Ref.…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of Switched Reluctance Motor Made by Blanking Amorphous Alloy Foil

et al. 2022

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“…At a low-impact velocity, the effect of the strain rate on the deformation behavior of materials can be neglected. Murakoshi et al [15] studied the effect of different blanking speeds and clearances on the fracture surface quality of an Fe-B-Si amorphous alloy foil with a thickness of 25 μm. The results showed that when the clearance is 2 μm, the proportion of bright bands on the fracture surface increases, whereas the proportion of fracture bands decreases with increased blanking speed.…”

Section: Introductionmentioning

confidence: 99%

“…At a low‐impact velocity, the effect of the strain rate on the deformation behavior of materials can be neglected. Murakoshi et al . studied the effect of different blanking speeds and clearances on the fracture surface quality of an Fe–B–Si amorphous alloy foil with a thickness of 25 μm.…”

Section: Introductionmentioning

confidence: 99%

Microhole Forming and Creep Behavior of Fe‐Based Nanocrystalline Alloys under Laser Dynamic Impact

et al. 2020

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Given the difficulty of forming Fe-based nanocrystalline alloys at room temperature, this study uses soft film as a flexible micropunch to realize the formation of microholes in Fe-based nanocrystalline alloy foil under laser impact. The effect of laser energy and soft film thickness on forming accuracy of the workpiece is studied, particularly fracture surface characteristic of the workpiece and the creep behavior of the workpiece. It is found that with increased laser energy, forming accuracy is improved. The fracture surface comprises sliding and fracture regions, and a large number of melt droplets and melt zone are distributed on the surface of the fracture region. This feature indicates that the workpiece exhibits brittle fracture in macroscopic scale and exhibits plastic fracture in the microscopic scale. The creep behavior of the workpiece comprises transient creep and steady state creep. With the extension of creep time, the stress exponent reaches a stable state. With the increase in load, the stress exponent also increases, which shows the obvious maximum load dependence.

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