Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Fundamental Characteristics of Work Deformation and Forging Load by High-Speed Large-Reduction Forging — Production Technology for Fine Grained Steel by Large Deformation Forging I —
Masaru MiyakeTakuro YazakiYasuhiro Sodani
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2013 Volume 54 Issue 7 Pages 1126-1130


A high-speed large-reduction forging technology has been developed to improve the hot strip production process. This technology can be used to produce fine-grained steel by enhancing the dynamic recrystallization caused by high strain. And it has specific features in width deformation caused by intermittent and large deformation. In this paper, laboratory-scale experiments and FE analysis are carried out to clarify the fundamental characteristics of the deformation and stress field. Large reduction results in a large width spread, and intermittent working causes periodic width deviation. The influences of die shape, the amount of feed per pass and the aspect ratio of the width against the thickness of the initial works on width spread and deviation are discussed. Large forging load results in a chevron-like indentation profile of the die surface and produces a thickness profile of the work.

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© 2013 The Japan Society for Technology of Plasticity
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