Ball-drop forming of coated steel sheets

Mamalis, AG; Vosniakos, GC; Zavaliangos, AJ

dc.contributor.author	Mamalis, AG	en
dc.contributor.author	Vosniakos, GC	en
dc.contributor.author	Zavaliangos, AJ	en
dc.date.accessioned	2014-03-01T01:06:46Z
dc.date.available	2014-03-01T01:06:46Z
dc.date.issued	1987	en
dc.identifier.issn	0378-3804	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9609
dc.subject.classification	Engineering, Mechanical	en
dc.title	Ball-drop forming of coated steel sheets	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0378-3804(87)90006-4	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0378-3804(87)90006-4	en
heal.language	English	en
heal.publicationDate	1987	en
heal.abstract	Experimental results are presented for the ball-drop forming process, pertaining to the influence of some variables in this low-speed impact process on the curvature acquired by initially-flat relatively-thin strips of low carbon and hot-dipped galvanized steels. The effects of the ball size, the mass of the balls dropped, the drop height, and the geometry and coating of the target material on the bulge profile and the surface topography of the strip are discussed. Attention is directed to the formation of the plastic zones of the dynamically deformed workpiece in relation to the curvatures produced. For the forming conditions examined, a double curvature with associated deformation zones was obtained; for large ball-sizes and drop-heights, concave shapes of the strip were formed; uncoated steel specimens showed higher bulgings than hot-dipped galvanized ones; geometrical discontinuities influence bulging performance; surface roughness is mainly determined by the crater dimensions and increases with increasing ball-size and drop-height. © 1987.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Journal of Mechanical Working Technology	en
dc.identifier.doi	10.1016/0378-3804(87)90006-4	en
dc.identifier.isi	ISI:A1987J520700004	en
dc.identifier.volume	15	en
dc.identifier.issue	1	en
dc.identifier.spage	53	en
dc.identifier.epage	68	en