The invention concerns a method for additive manufacturing a component by repetitively superposing and solidifying material layers according to a 3D model of the component. The method comprises the steps of scan, by means of an eddy current sensing unit (20), of a new solidified cross section (15) obtained by selectively solidifying a material layer so as to provide an integrity data (VMM) of a sensed portion (23). A difference between the sensed integrity data (VMM) and an expected integrity data (VEE) is then executed for detecting a manufacturing anomaly within this portion. The expected integrity data (VEE) is determined based on collected integrity data of a solid basic structure likely matching or being identical to a geometrical structure (41) obtained from the 3D model (40) of a portion corresponding to said sensed portion (23), said solid basic structure being manufactured or simulated according to another 3D model.

The invention concerns a method for additive manufacturing a component by repetitively superposing and solidifying material layers according to a 3D model of the component. The method comprises the steps of scan, by means of an eddy current sensing unit (20), of a new solidified cross section (15) obtained by selectively solidifying a material layer so as to provide an integrity data (VMM) of a sensed portion (23). A difference between the sensed integrity data (VMM) and an expected integrity data (VEE) is then executed for detecting a manufacturing anomaly within this portion. The expected integrity data (VEE) is determined based on collected integrity data of a solid basic structure likely matching or being identical to a geometrical structure (41) obtained from the 3D model (40) of a portion corresponding to said sensed portion (23), said solid basic structure being manufactured or simulated according to another 3D model.

An inspection system for in situ evaluation of an additive manufacturing (AM) build part is provided. The inspection system comprises a build plane induction coil sensor configured and positionable so that during construction of the build part, the sensor's magnetization and sensor coils surround at least the last-produced layer of the AM build part in the build plane. The inspection system further comprises an energization circuit and a central processing system. The central processing system comprises a communication processor configured for sending command signals to the energization circuit and receiving impedance data from the build plane induction coil sensor, and energization controller configured for determining energization commands for transmission to the energization circuit, and an induction data analyzer configured for processing build part impedance data using complex impedance plane analysis and for identifying anomalies in the AM build part.

An inspection system for in situ evaluation of an additive manufacturing (AM) build part is provided. The inspection system comprises a build plane induction coil sensor configured and positionable so that during construction of the build part, the sensor's magnetization and sensor coils surround at least the last-produced layer of the AM build part in the build plane. The inspection system further comprises an energization circuit and a central processing system. The central processing system comprises a communication processor configured for sending command signals to the energization circuit and receiving impedance data from the build plane induction coil sensor, and energization controller configured for determining energization commands for transmission to the energization circuit, and an induction data analyzer configured for processing build part impedance data using complex impedance plane analysis and for identifying anomalies in the AM build part.

A 3D printer for a metal alloy filament is provided in which, in order to prevent the oxidation of a metal alloy laminate, an inert gas is introduced, the outside and heat and air are blocked, and a metal alloy filament that is melted in a nozzle and extruded is laminated one layer at a time on a floor plate installed inside a heated chamber and moving three-dimensionally with respect to the nozzle, in order to firmly attach the filament having little deformation.

A 3D printer for a metal alloy filament is provided in which, in order to prevent the oxidation of a metal alloy laminate, an inert gas is introduced, the outside and heat and air are blocked, and a metal alloy filament that is melted in a nozzle and extruded is laminated one layer at a time on a floor plate installed inside a heated chamber and moving three-dimensionally with respect to the nozzle, in order to firmly attach the filament having little deformation.

The invention relates to a printhead (1) for a 3D printer, particularly a metal printer, comprising a housing (3), a device (28) for supplying a metal (14), a reservoir (7, 27), a nozzle device (2) and a piston (5), the nozzle device (2) comprising a guide sleeve (11), a nozzle plate (9) provided with an outlet (10), and a clamping device (4). The nozzle plate (9) and the guide sleeve (11) are mutually elastically braced by means of the clamping device (4), and the guide sleeve (11) and the reservoir (7, 27) are mutually elastically braced by means of the clamping device (4).

The invention relates to a printhead (1) for a 3D printer, particularly a metal printer, comprising a housing (3), a device (28) for supplying a metal (14), a reservoir (7, 27), a nozzle device (2) and a piston (5), the nozzle device (2) comprising a guide sleeve (11), a nozzle plate (9) provided with an outlet (10), and a clamping device (4). The nozzle plate (9) and the guide sleeve (11) are mutually elastically braced by means of the clamping device (4), and the guide sleeve (11) and the reservoir (7, 27) are mutually elastically braced by means of the clamping device (4).

An additive manufacturing system for building a product includes a base plate for mounting the product thereon, and at least one heating element shaped to at least partially conform to the product and configured to apply heat to at least a portion of the product as the product is additively manufactured to reduce thermal gradients in the product.

An additive manufacturing system for building a product includes a base plate for mounting the product thereon, and at least one heating element shaped to at least partially conform to the product and configured to apply heat to at least a portion of the product as the product is additively manufactured to reduce thermal gradients in the product.