Elucidation of Shearing Mechanism of Finish-type FB and Extrusion-type FB for Thin Foil of JIS SUS304 by Numerical and EBSD Analyses

Suzuki, Yohei; Shiratori, Tomomi; Yang, Ming; Murakawa, Masahiro

doi:10.3390/ma12132143

Cited by 6 publications

(6 citation statements)

References 14 publications

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“…The remeshing condition was based on the possible depth of interference between the work material element and the tool boundary (specifically, this interference depth was 1 µm). Incidentally, the aforementioned FEM conditions were based on the fact that the results of the blanking experiment and the FEM analysis were in good agreement in the previous report [12]. For the punch and die, we selected cemented carbide (WC-15% Co) on the DEFORM2D software mentioned earlier.…”

Section: Fem Simulation Model and Conditionsmentioning

confidence: 91%

“…Falconnet et al reported punch wear in the blanking of a copper thin sheet [23,24]. However, the punch load due to the difference in negative clearance, including zero clearance in the FB proposed in previous reports [11,12], has not been verified or analyzed. In this study, we aim to derive the optimal clearance at which the shear cut surface can be finished with a full-sheared surface and the punch load can be minimized by experimental verification and finite element analysis at the narrow, zero, and negative clearances.…”

Section: Introductionmentioning

confidence: 97%

“…The results revealed that it was possible to process full-sheared surfaces by adopting negative clearance [11]. In addition, the finite element method (FEM) and material crystal analysis by Electron Back Scatter Diffraction (EBSD) have also revealed the difference in the processing mechanism between the two FB methods [12].…”

Section: Introductionmentioning

confidence: 99%

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Optimum Clearance in the Microblanking of Thin Foil of Austenitic Stainless Steel JIS SUS304 Studied from Shear Cut Surface and Punch Load

2020

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An extrusion-type fine blanking with a negative clearance was proposed by the authors instead of standard fine blanking for creating a full-sheared surface in the micro blanking process. In this study, micro blanking experiments and finite element analyses with narrow, zero and negative clearances are carried out for the optimizing the clearance at which a shear cut surface can be finished with a full-sheared surface with the minimized punch load. Fracture criterion, hydrostatic stress and maximum punch stress for the conditions with various clearances are investigated. As a result, it was clarified that the clearance at which the cut surface does not fracture and minimization of the punch load is achieved is gained by the use of clearance −4 μm.

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Section: Fem Simulation Model and Conditionsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 97%

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Optimum Clearance in the Microblanking of Thin Foil of Austenitic Stainless Steel JIS SUS304 Studied from Shear Cut Surface and Punch Load

2020

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“…6) Moreover, we have clarified the suppression mechanism of the fracture by an FE analysis and EBSD analysis. 7) On the other hand, focusing on materials used for medical components, austenitic stainless steels are often used as the materials from the viewpoints of both corrosion resistance and biocompatibility. In particular, JIS SUS304 and JIS SUS316L materials are used in many medical components.…”

Section: Introductionmentioning

confidence: 99%

Influence of Strain-Induced Martensitic Transformation of Austenitic Stainless Steel Sheet in Precision Blanking on Cut-Surface Quality

et al. 2020

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The main purpose of precision blanking in press stamping is to suppress fracture of the cut surface. The principle is attainable by applying hydrostatic stress on the workpiece by various contrivances, so that the workpiece can maintain its ductility for suppression of fracture. Stainless steel, which is commonly used in medical components, is also known to be a ductile material, but one of problematic characteristics of austenitic stainless steel is martensitic transformation. The phenomenon is that the ductile austenite phase is changed to the brittle martensitic one by processing strain. Therefore, in this study, the effect on the cut surface from martensitic transformation near it in the precision blanking process was investigated. As a result, it was proved that there was a difference in the occurrence or non-occurrence of fracture of the cut surface due to the difference in the strain-induced martensitic transformation.

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“…Suzuki et al [ 39 ] elucidated the shearing mechanism of finish-type FB and extrusion-type FB for a thin foil of JIS SUS304 by numerical and EBSD analyses. In this research, a numerical analysis using finite element (FE) analysis was performed to clarify the shearing mechanism in the process of extrusion-type fine blanking (FB) for a thin foil of JIS SUS304.…”

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confidence: 99%

Recent Development in Micromanufacturing of Metallic Materials

et al. 2020

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Product miniaturization is a trend for facilitating product usage, enabling product functions to be implemented in microscale geometries, and aimed at reducing product weight, volume, cost and pollution. Driven by ongoing miniaturization in diverse areas including medical devices, precision equipment, communication devices, micro-electromechanical systems (MEMS) and microsystems technology (MST), the demands for micro metallic products have increased tremendously. Such a trend requires development of advanced micromanufacturing technology of metallic materials for producing high-quality micro metallic products that possess excellent dimensional tolerances, required mechanical properties and improved surface quality. Micromanufacturing differs from conventional manufacturing technology in terms of materials, processes, tools, and machines and equipment, due to the miniaturization nature of the whole micromanufacturing system, which challenges the rapid development of micromanufacturing technology. Against such a background, the Special Issue “Micromanufacturing of Metallic Materials” was proposed to present the recent developments of micromanufacturing technologies of metallic materials. The papers collected in the Special Issue include research articles, literature review and technical notes, which have been highlighted in this editorial.

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Elucidation of Shearing Mechanism of Finish-type FB and Extrusion-type FB for Thin Foil of JIS SUS304 by Numerical and EBSD Analyses

Cited by 6 publications

References 14 publications

Optimum Clearance in the Microblanking of Thin Foil of Austenitic Stainless Steel JIS SUS304 Studied from Shear Cut Surface and Punch Load

Optimum Clearance in the Microblanking of Thin Foil of Austenitic Stainless Steel JIS SUS304 Studied from Shear Cut Surface and Punch Load

Influence of Strain-Induced Martensitic Transformation of Austenitic Stainless Steel Sheet in Precision Blanking on Cut-Surface Quality

Recent Development in Micromanufacturing of Metallic Materials

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