Examples of an electron gun with a moving cathode station and a moving anode station are described. The moving cathode has a driver that moves the station and comprises a plurality of cathodes with a plurality of bias cups to control a thermal electron emission region by applying a bias voltage to the bias cup. The moving anode station comprises a plurality of anodes and has driver to move the anode station such that a position of each anode is synchronized with a positioned of a respective matching pair of cathode and bias cup. A controller that is in communication with the anode and cathode moving stations controls the bias voltage and the drivers to control the amount of thermal electrons and to synchronize and align a predetermined cathode with a predetermined anode thus controlling the size and parameters of the generated electron beam.
Examples of a laser additive manufacturing system are described. The system comprises a laser configured to generate a laser beam, a fiber optic coupled to the laser to transmit the laser beam to a laser optic head that is coupled to the fiber optic and comprises a focus lens to focus the light beam. The laser optic head is configured to slide along a sliding mechanism in X-direction. A powder feeder is used to continuously move in Y-direction and dispense an uniform layer of powdered material onto a powder bad that is positioned on a build plate of the building chamber. The build plate is configured to move in Z-direction. The light beam generated by the laser is focused using the laser optic head onto a small region of the powder bed where the powdered material is positioned producing small volumes of melt pools that are then cooled and a new layer of powdered material is dispensed over it.
B23K 26/06 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples
B23K 26/12 - Travail par rayon laser, p. ex. soudage, découpage ou perçage sous atmosphère particulière, p. ex. dans une enceinte
B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p. ex. par frittage ou fusion laser sélectif
B29C 64/232 - Moyens d’entraînement pour un mouvement le long de l'axe orthogonal au plan d’une couche
Examples of an apparatus for dispensing a powdered material are described. The dispensing apparatus comprises a dispenser with an inlet and a dispensing opening, and a vibrating system that is in communication to the dispenser and which provides a continuing periodic oscillation of the dispenser. The apparatus further comprises a controller in communication with a driver of the vibrating system to control a frequency, amplitude and duration of the vibrations such that the powdered material continuously flows out through the dispensing opening during vibration of the dispenser.
B22F 10/28 - Fusion sur lit de poudre, p. ex. fusion sélective par laser [FSL] ou fusion par faisceau d’électrons [EBM]
B22F 10/368 - Température ou gradient de température, p. ex. température du bassin de fusion
B22F 10/85 - Acquisition ou traitement des données pour la commande ou la régulation de procédés de fabrication additive
B22F 12/13 - Moyens de chauffage auxiliaires pour préchauffer le matériau
B22F 12/41 - Moyens de rayonnement caractérisés par le type, p. ex. laser ou faisceau d’électrons
B22F 12/43 - Moyens de rayonnement caractérisés par le type, p. ex. laser ou faisceau d’électrons pulsésMoyens de rayonnement caractérisés par le type, p. ex. laser ou faisceau d’électrons modulés en fréquence
B22F 12/50 - Moyens d’alimentation en matériau, p. ex. têtes
B22F 12/58 - Moyens d’alimentation en matériau, p. ex. têtes pour modifier la composition du matériau, p. ex. en mélangeant
B22F 12/90 - Moyens de commande ou de régulation des opérations, p. ex. caméras ou capteurs
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
Produits et services
(1) Metals in powder form for use in machines for electron beam sintering, electron beam melting, laser sintering
(2) Machines for electron beam sintering, electron beam melting, laser sintering; Dispensers for dispensing powders for electron beam sintering, electron beam melting and laser sintering machines; 3D printers, machines and machine parts for electron beam sintering, electron beam melting, laser sintering. (1) Custom 3D printing for others of parts, workpieces, prototypes, models, shapes, tools and other kinds of three-dimensional objects with powders and dispersions, especially by means of electron beam sintering, electron beam melting, laser sintering; Custom manufacture of powders for 3D printing by means of electron beam sintering, electron beam melting, laser sintering.