Process for manufacturing a metal sheet having at least a zone with increased thickness for a metal gasket, in particular a cylinder head gasket, and metal sheet obtained therewith

摘要

The method involves forming a cut in a metal sheet (10) to obtain a sliver. The sliver is deformed by folding and elongating the sliver along a non-cut line so as to obtain an overlapping. The elongation of the sliver is carried out at a free end of the sliver. The sliver is leveled and projecting height of the sliver is calibrated to obtain an over thickness zone (24) of adapted height (h). An independent claim is also included for a metal gasket comprising a metal sheet.