Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Institut De Radioprotection Et De Surete Nucleaire

Commissariat a L'energie Atomique

Compagnie Generale Des Matieres Nucleaires

Christophe Chagnot

Guy Pilot

Sylvain Fauvel

Gaëtan Canneau

Gaétan Canneau

Gilles Fondant

The invention relates to an optimized laser cutting method for cutting a part from a material by means of a cutting system comprising: a laser source for producing a laser beam having a certain power; and a cutting head comprising an end nozzle for passage of a cutting laser beam, said method being characterized in that it comprises a step of determining the cutting power Pd such that: Pd=Max(Popt;&#x3bb;e) where Max is the mathematical operator of the maximum, Popt is an optimal power of the laser beam of the cutting system, which is predetermined in accordance with the part to be cut, and/or with cutting parameters and/or with system parameters, to minimize the mass defect per unit length of the part when the part is being cut, &#x3bb; is a leading coefficient representing the number of kW required for cutting the part per mm of the thickness of the part, and e is the thickness of the part in mm.

Laser cutting method optimized in terms of mass defect per unit length

The invention relates to an optimized laser cutting method for cutting a part from a material by means of a cutting system comprising: a laser source for producing a laser beam having a certain power; and a cutting head comprising an end nozzle for passage of a cutting laser beam, wherein the method comprises: determining a cutting power Pd such that Pd=Max(Popt;&#x3bb;e) where Max is the mathematical operator of the maximum, Popt is an optimal power of the laser beam of the cutting system, which is predetermined in accordance with the part to be cut, and/or with cutting parameters and/or with system parameters, in order to minimize the amount of aerosols produced when the part is cut, &#x3bb; is a leading coefficient representing the number of kW required for cutting the part per mm of the thickness of the part, and e is the thickness of the part in mm.

Laser cutting method optimized in terms of the amount of aerosols

A monitoring device by laser shadowscopy, which comprises a light emitter () and receiver (), mounted on an arm () oscillating at will around two joints (), in order to restore the image of the monitored profile more accurately. An important application relates to welding methods and especially in hollow beveled edges.

Monitoring method and device by shadowscopy

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Velizy-Villacoublay, France

Christophe Chagnot