Additive manufacturing devices and methods for the same are provided. The additive manufacturing device may include a stage configured to support a substrate, a printhead disposed above the stage, and a targeted heating system disposed proximal the printhead. The printhead may be configured to heat a build material to a molten build material and deposit the molten build material on the substrate in the form of droplets to fabricate the article. The targeted heating system may be configured to control a temperature or temperature gradient of the droplets deposited on the substrate, an area proximal the substrate, or combinations thereof.

The invention relates to a temperature control system for additive manufacturing and method for same. The temperature control system comprises: a cladding device configured to fuse a material and form a cladding layer, the cladding device comprising a first energy source; a micro-forging device coupled to the cladding device for forging the cladding layer; a detecting device; a control module; and an adjusting module coupled to at least one of the first energy source and the micro-forging device.

The invention relates to a temperature control system for additive manufacturing and method for same. The temperature control system comprises: a cladding device configured to fuse a material and form a cladding layer, the cladding device comprising a first energy source; a micro-forging device coupled to the cladding device for forging the cladding layer; a detecting device; a control module; and an adjusting module coupled to at least one of the first energy source and the micro-forging device.

Methods of producing three-dimensional alloy workpieces are described herein, which can comprise: producing a precursor workpiece on a layer-by-layer basis by depositing a layer of a mixed powder, the mixed powder comprising an elemental powder and a second powder; melting at least a portion of the elemental powder by directing an energy field onto a portion of the layer; and repeating the deposing and melting steps to form the precursor workpiece from a plurality of layers. The precursor workpiece can comprise a dispersed phase and a continuous phase, the dispersed phase being dispersed within the continuous phase, the dispersed phase comprising a plurality of discrete regions comprising the second powder, and the continuous phase comprising the melted elemental powder. The methods can further comprise heating the precursor workpiece to homogenize the continuous phase and the dispersed phase, thereby forming the three-dimensional alloy workpiece comprising a continuous alloy phase.

A method and an apparatus for additive casting of parts is disclosed. The method may include: depositing, on a build table, a first portion of a mold, such that, the depositing may be performed layer by layer; pouring liquid substance into the first portion of the mold to form a first casted layer; solidifying at least a portion of the first casted layer; depositing a second portion of the mold, on top of the first portion of the mold; pouring the liquid substance into the second portion of the mold to form a second casted layer, on top of at least a portion of the first casted layer; and solidifying at least a portion of the second casted layer. The method may further include joining the first and second casted layers prior to the pouring of a third casted layer.

A method and an apparatus for additive casting of parts is disclosed. The method may include: depositing, on a build table, a first portion of a mold, such that, the depositing may be performed layer by layer; pouring liquid substance into the first portion of the mold to form a first casted layer; solidifying at least a portion of the first casted layer; depositing a second portion of the mold, on top of the first portion of the mold; pouring the liquid substance into the second portion of the mold to form a second casted layer, on top of at least a portion of the first casted layer; and solidifying at least a portion of the second casted layer. The method may further include joining the first and second casted layers prior to the pouring of a third casted layer.

A nozzle device includes three or more rail members, three or more slider members, three or more arm members, a nozzle portion, and a drive mechanism. The three or more rail members each includes rails parallel with each other. The three or more slider members are connected to the rail members to be movable along the rails, respectively. The three or more arm members are connected to the slider members, and movably and rotatably supported in the rail members through the slider members, respectively. The nozzle portion is rotatably connected to the three or more arm members to inject a material and emit an energy beam. The drive mechanism includes at least five actuators that set one of a relative position and a relative angle between each of combinations of two mutually connected elements among the rail members, the slider members, the arm members, and the nozzle portion.

Three-dimensional manufacturing method and apparatus which easily adjust individually a heating amount per unit area for each of solidified and unsolidified regions is provided. Light source and scanning unit heat with a laser beam a layer formed by a layer forming unit. In a layer forming step, a controlling unit causes the layer forming unit to form a layer of material powder. In a laser heating step, the controlling unit controls the light source and the scanning unit to alternately heat with the laser beam the solidified region obtained by fusing and solidifying the layer and the unsolidified region adjacent to the solidified region, thereby integrally fusing and solidifying the solidified region and the unsolidified region.

Three-dimensional manufacturing method and apparatus which easily adjust individually a heating amount per unit area for each of solidified and unsolidified regions is provided. Light source and scanning unit heat with a laser beam a layer formed by a layer forming unit. In a layer forming step, a controlling unit causes the layer forming unit to form a layer of material powder. In a laser heating step, the controlling unit controls the light source and the scanning unit to alternately heat with the laser beam the solidified region obtained by fusing and solidifying the layer and the unsolidified region adjacent to the solidified region, thereby integrally fusing and solidifying the solidified region and the unsolidified region.

A method and an apparatus for additive casting of parts is disclosed. The method may include: depositing, on a build table, a first portion of a mold, such that, the depositing may be performed layer by layer; pouring liquid substance into the first portion of the mold to form a first casted layer; solidifying at least a portion of the first casted layer; depositing a second portion of the mold, on top of the first portion of the mold; pouring the liquid substance into the second portion of the mold to form a second casted layer, on top of at least a portion of the first casted layer; and solidifying at least a portion of the second casted layer. The method may further include joining the first and second casted layers prior to the pouring of a third casted layer.