Importance

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Abstract

A molding device for the shaping of a material includes:

a lower mold body, or die, made from an electrically conductive material and including a molding zone intended to be in contact with the material to be shaped;an upper mold body, or punch, made from an electrically conductive material, and including a molding zone intended to be in contact with the material to shaped;a removable intermediate part, or core, made of an electrically conductive material, and intended to be inserted between the die and the punch;induction elements for generating a magnetic field that surrounds the die, the punch and the intermediate part; these three components being electrically insulated in pairs, so that the opposite faces of the intermediate part and the die, and those of the intermediate part and the punch, delimit two air gaps in which the magnetic field flows which induces currents at the surface of the molding zones of the die and the punch, thus making it possible to localize the action of the inductors at the surface of the molding zones.

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First Claim