Method for forming a metal sheet

摘要

Tool for hot-forming a metal sheet that comprises at least one upper former (2) and a bottom former (3) between which is disposed a metal sheet (4). Said metal sheet (4) is pressed between said formers (2,3) in order to be formed, a formed area (41) and a residual area (42) thereby being obtained on said metal sheet (4) during said forming. Said tool (1) comprises cooling means for cooling the upper former (2) and the bottom former (3), said metal sheet (4) being cooled when it is formed between said cooled formers (2,3). Said tool (1) also comprises actuating means (5) that generate at least one entail (6) in the metal sheet (4) between said formed area (41) and said residual area (42) when said actuating means (5) act on said metal sheet (4). A method using such a tool is also disclosed.