Association Pour La Recherche Et Le Developpement Des Methodes Et Processus Industriels (a.r.m.i.n.e.s.)

Aurock S.a.r.l.

Association Pour La Recherche Et Le Developpement Des Methodes Et Processus Industriels

Aurock

Etienne Lebard

Vanessa Vidal

Vincent Velay

Yannick Le Maoult

Fabien Nazaret

Luc Penazzi

A method for controlling a superplastic forming machine for imprinting a shape on a sheet, the machine comprising: a cover; a vat; a press and a peripheral seal for gripping the sheet at its periphery and sealing a pressurized forming chamber delimited by the sheet; members for heating the sheet directly by radiation, these being arranged facing the sheet; a programmable controller. The method involves: determining an initial heating configuration; a finite-element simulation relating to the temperature of the sheet and performed in such a way as to have a temperature that is substantially consistent across the sheet and substantially constant during the course of the forming, in order to obtain a forming specification comprising at least a cycle of powering the heating members and a cycle of pressure in the forming chamber; programming the programmable controller according to the forming specification yielded by the previous simulation.

Method of controlling a superplastic forming machine and corresponding machine

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Albi, France

Etienne Lebard