Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Stephanie Verleene

Frédéric Pialot

Gilles Walrand

Christophe Bessac

A method for manufacturing an aluminium mould () segment () for curing and vulcanizing a tyre comprises: a) fixing at least one thin blade () for the formation of the grooves in the tire tread, in a mould form made of friable material, so that an exterior part of the thin blade is embedded in the material of the mould form and so that an interior part projects from this mould form, this thin blade being made from maraging steel and having been obtained by a selective laser melting method, b) closing the mould form and pouring or injecting aluminium into it, coating the interior part of the thin blade, c) breaking away the mould form to obtain the mould segment. The thin blade () is subjected to a peening treatment with a material with a Vickers hardness between 340 and 500 HV and with dimensions smaller than 0.3 mm.

Method for manufacturing a mold segment for curing and vulcanizing a tire

A method for the heat treatment of a part made of maraging steel, which part is obtained by selective laser melting, it comprises the steps of: heating the said part made of maraging steel from ambient temperature T0 to a maximum temperature Tmax of between 600&#xb0; C. and 640&#xb0; C., maintaining the said maximum temperature Tmax for a duration of between 5 hours and 7 hours, and rapidly cooling the said part.

Method for the heat treatment of a part made from maraging steel

Method for fabricating a three-dimensional object by successive consolidation, layer by layer, of selected regions of a layer of powder, consolidated regions corresponding to successive sections of the three-dimensional object, comprising in order:

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Clermont-Ferrand, France

Stephanie Verleene