The present disclosure relates to a printing arrangement (1) for printing an object. The printing arrangement (1) comprises: a printing chamber (10) adapted to provide, during use, a hermetically sealed environment; a first temperature sensor (14a) adapted to measure a temperature of a filament from a filament source (11); first heating means (15a) for heating the filament to a target filament temperature; a printing head adapted to deposit, during use, the heated filament into the printing chamber (10) in accordance with a 3D object model stored in a memory module (16), wherein the printing arrangement (1) further comprises: a first humidity sensor (17) adapted to measure the humidity in the printing chamber (10), and first humidity adjustment means (30) adapted to enable adjustment of the humidity in the printing chamber (10) to a target printing chamber humidity. A method (S100) of printing objects is also disclosed.

The present disclosure relates to a printing arrangement (1) for printing an object. The printing arrangement (1) comprises: a printing chamber (10) adapted to provide, during use, a hermetically sealed environment; a first temperature sensor (14a) adapted to measure a temperature of a filament from a filament source (11); first heating means (15a) for heating the filament to a target filament temperature; a printing head adapted to deposit, during use, the heated filament into the printing chamber (10) in accordance with a 3D object model stored in a memory module (16), wherein the printing arrangement (1) further comprises: a first humidity sensor (17) adapted to measure the humidity in the printing chamber (10), and first humidity adjustment means (30) adapted to enable adjustment of the humidity in the printing chamber (10) to a target printing chamber humidity. A method (S100) of printing objects is also disclosed.

A three-dimensional shaping apparatus includes a plasticizing unit, a nozzle, a stage, and a control unit, wherein the plasticizing unit includes a driving motor, a screw, a barrel, and a first heater that heats a material supplied between the screw and the barrel, and the control unit performs a process of decreasing an output of the first heater when at least one of a first condition, a second condition, and a third condition is satisfied, provided that the first condition is that a measurement value of a first temperature sensor that measures a temperature of the screw or the barrel is larger than a first predetermined value, the second condition is that a torque value of the driving motor is smaller than a second predetermined value, and the third condition is that a measurement value of a pressure sensor that measures a pressure in a flow channel between a communication hole and a nozzle opening is smaller than a third predetermined value.

A three-dimensional shaping apparatus includes a plasticizing unit, a nozzle, a stage, and a control unit, wherein the plasticizing unit includes a driving motor, a screw, a barrel, and a first heater that heats a material supplied between the screw and the barrel, and the control unit performs a process of decreasing an output of the first heater when at least one of a first condition, a second condition, and a third condition is satisfied, provided that the first condition is that a measurement value of a first temperature sensor that measures a temperature of the screw or the barrel is larger than a first predetermined value, the second condition is that a torque value of the driving motor is smaller than a second predetermined value, and the third condition is that a measurement value of a pressure sensor that measures a pressure in a flow channel between a communication hole and a nozzle opening is smaller than a third predetermined value.

A powder cleaning system can include a fluidized bed reactor configured to retain powder and fluidize the powder to remove adsorbate and/or other contaminants from the powder, and one or more gas sources configured to be in selective fluid communication with the fluidized bed reactor via at least one inlet line to selectively provide an inlet flow having one or more gases to the fluidized bed reactor to fluidize the powder with the one or more gases within the fluidized bed reactor. The system can include at least one outlet line in fluid communication with the fluidized bed reactor and configured to allow removal of outlet flow which comprises the adsorbate and/or other contaminants from the fluidized bed reactor.

A powder cleaning system can include a fluidized bed reactor configured to retain powder and fluidize the powder to remove adsorbate and/or other contaminants from the powder, and one or more gas sources configured to be in selective fluid communication with the fluidized bed reactor via at least one inlet line to selectively provide an inlet flow having one or more gases to the fluidized bed reactor to fluidize the powder with the one or more gases within the fluidized bed reactor. The system can include at least one outlet line in fluid communication with the fluidized bed reactor and configured to allow removal of outlet flow which comprises the adsorbate and/or other contaminants from the fluidized bed reactor.

An additive manufacturing device (AMD) for manufacturing objects through deposition of superposed layers of material in a granulate or powder form, the AMD comprising: a hydraulic cylinder; a mold for sealable attachment to the hydraulic cylinder; a material deposition station having an outlet for depositing the material in the mold layer-by-layer; a heating element; and a compressor. Between the deposition of one or more layers of material in the mold, the mold and the hydraulic cylinder are sealably attached to form a pressure container, the compressor injects gas in the container to increase a pressure within the pressure container and the heating element provides heat within the pressure container to further increase the pressure and to perform sintering or high-temperature synthesis of the material while submitting the material to the pressure.

An additive manufacturing device (AMD) for manufacturing objects through deposition of superposed layers of material in a granulate or powder form, the AMD comprising: a hydraulic cylinder; a mold for sealable attachment to the hydraulic cylinder; a material deposition station having an outlet for depositing the material in the mold layer-by-layer; a heating element; and a compressor. Between the deposition of one or more layers of material in the mold, the mold and the hydraulic cylinder are sealably attached to form a pressure container, the compressor injects gas in the container to increase a pressure within the pressure container and the heating element provides heat within the pressure container to further increase the pressure and to perform sintering or high-temperature synthesis of the material while submitting the material to the pressure.

An apparatus for producing an object by additive manufacturing layer by layer in a layer sequence. The apparatus includes a process chamber for receiving a bath of powdered material, a support for positioning the object in relation to a surface level of the bath of powdered material, a solidifying device for solidifying a selective layer-part of the powdered material, and a control unit for adjusting for individual layers in the layer sequence, a setting of at least one process parameter, during the manufacture of the object. A method, performed by the apparatus, including the step of adjusting, by the control unit, for individual layers in the layer sequence, the setting of at least one process parameter, during the manufacture of the object.

An apparatus for producing an object by additive manufacturing layer by layer in a layer sequence. The apparatus includes a process chamber for receiving a bath of powdered material, a support for positioning the object in relation to a surface level of the bath of powdered material, a solidifying device for solidifying a selective layer-part of the powdered material, and a control unit for adjusting for individual layers in the layer sequence, a setting of at least one process parameter, during the manufacture of the object. A method, performed by the apparatus, including the step of adjusting, by the control unit, for individual layers in the layer sequence, the setting of at least one process parameter, during the manufacture of the object.