Commissariat a L'energie Atomique Et Aux Energies Alternatives

Champalle

Jean-Philippe Bayle

Christophe Brenneis

Gérard Delette

Patrick Baptiste

Patrick Moyer

Didier Lager

Patrik Gosset

Frédéric Jorion

A uniaxial press for shaping pellets by compressing powder in a die by punches. The uniaxial press can be used in a restricted and hostile environment and includes small modules that can pass separately through narrow openings, the modules being assembled by placing over columns and by screwing, therefore by remote handling in the confined space where the press is to operate without requiring any further intervention. The actuation is generally exclusively electromechanical.

Press for shaping pellets in a restricted and hostile environment and method for assembling the press

A pressing tooling machine, including one or two punches, a die including sectors that can separate from each other but are connected to a shared primary portion, and a ring surrounding and holding the sectors, against which it is adjusted by tapered surfaces, and the altitude of which varies owing to the rotation of a crown provided with a surface in relief. When compression is finished, stripping is preceded by a slight separation of the sectors, which makes it possible to release stresses in the compressed piece and avoid many risks of damaging the piece. The sectors are made resistant by inserts made from a hard material, generally removable and able to be machined to an exact profile of the pieces to the formed.

Press tooling

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Villeneuve les Avignon, France

Jean-Philippe Bayle