Surface Quality of Extruded Sidewall in Cold Backward Cup Extrusion with Low-Frequency Torsional Oscillation

Matsumoto, Ryo; Takatsuka, Seiji; Utsunomiya, Hiroshi

doi:https://doi.org/10.1007/978-3-030-75381-8_18

Surface Quality of Extruded Sidewall in Cold Backward Cup Extrusion with Low-Frequency Torsional Oscillation

Matsumoto, Ryo; Takatsuka, Seiji; Utsunomiya, Hiroshi

Minerals, Metals and Materials Series, 2021, 217-225

Number of Access:419（2025-08-13 23:46 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/94003

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Title	Surface Quality of Extruded Sidewall in Cold Backward Cup Extrusion with Low-Frequency Torsional Oscillation
Creator	NRID 1000050362645 1000050362645 ORCID 0000-0002-4477-2139 0000-0002-4477-2139 researchmap permalink ryo-matsumoto ryo-matsumoto Scopus Author ID 35512063000 35512063000 CreatorName Matsumoto, Ryo
	CreatorName Takatsuka, Seiji
	NRID 1000080252584 1000080252584 researchmap permalink read0042799 read0042799 Scopus Author ID 7102139699 7102139699 CreatorName Utsunomiya, Hiroshi
Subject	Extrusion
	Forging
	Friction
	Surface
	Torsion
Description	This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: https://doi.org/10.1007/978-3-030-75381-8_18
Abstract	The effect of torsional oscillation on the surface quality of an extruded sidewall of a workpiece was investigated in backward cup extrusion with an extrusion ratio of 2.0 at room temperature. In this extrusion process, a cylindrical aluminum workpiece lubricated with mineral oil was extruded in the axial direction and simultaneously twisted in the circumferential direction between extrusion and knockout punches. The two punches were controlled with an axial speed of 0.1 mm/s, an alternating amplitude of 5°, and a maximum angular speed of 0.5 rpm. The torsional oscillation tilted the traction direction at the container–workpiece from the radial direction to the circumferential direction with approximately 25% lower contact pressure on the container. As the result, the surface of the extruded sidewall was uniformly smoothed.
Publisher	Springer Science and Business Media Deutschland GmbH
Source Title	Minerals, Metals and Materials Series
Page	217-225
Date of Issued	2021-07-11
Language	English
Handle URL	https://hdl.handle.net/11094/94003
PISSN	23671181
eISSN	23671696
Relation.isVersionOf	DOI (Publisher Version) https://doi.org/10.1007/978-3-030-75381-8_18
Access Rights	open access
oaire:version	Accepted Manuscript
Category	会議発表論文 Conference Paper

Resource Type	conference paper
Local Type	Conference Paper
DCMI Type	Text
DCTERMS.bibliographicCitation	Minerals, Metals and Materials Series. 2021, p. 217-225
DC.title	Surface Quality of Extruded Sidewall in Cold Backward Cup Extrusion with Low-Frequency Torsional Oscillation
DC.creator	Matsumoto, Ryo
	Takatsuka, Seiji
	Utsunomiya, Hiroshi
DC.publisher	Springer Science and Business Media Deutschland GmbH
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2021-07-11
DC.identifier	https://doi.org/10.1007/978-3-030-75381-8_18
DC.subject	Extrusion
	Forging
	Friction
	Surface
	Torsion
DC.description	This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: https://doi.org/10.1007/978-3-030-75381-8_18
DCTERMS.abstract	The effect of torsional oscillation on the surface quality of an extruded sidewall of a workpiece was investigated in backward cup extrusion with an extrusion ratio of 2.0 at room temperature. In this extrusion process, a cylindrical aluminum workpiece lubricated with mineral oil was extruded in the axial direction and simultaneously twisted in the circumferential direction between extrusion and knockout punches. The two punches were controlled with an axial speed of 0.1 mm/s, an alternating amplitude of 5°, and a maximum angular speed of 0.5 rpm. The torsional oscillation tilted the traction direction at the container–workpiece from the radial direction to the circumferential direction with approximately 25% lower contact pressure on the container. As the result, the surface of the extruded sidewall was uniformly smoothed.
DC.format	94003
citation_title	Surface Quality of Extruded Sidewall in Cold Backward Cup Extrusion with Low-Frequency Torsional Oscillation
citation_author	Matsumoto, Ryo
	Takatsuka, Seiji
	Utsunomiya, Hiroshi
citation_publisher	Springer Science and Business Media Deutschland GmbH
citation_language	English
citation_date	2021-07-11
citation_journal_title	Minerals, Metals and Materials Series
citation_firstpage	217
citation_lastpage	225
citation_doi	https://doi.org/10.1007/978-3-030-75381-8_18
citation_public_url	https://hdl.handle.net/11094/94003

Surface Quality of Extruded Sidewall in Cold Backward Cup Extrusion with Low-Frequency Torsional Oscillation

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