The invention relates to a device and method for preparing a structure or object using an additive manufacturing process referred to as sequential cold spray laser sintering. The method includes depositing by cold spraying a plurality of sequential layers of material onto a substrate/build plate or particles of materials onto a compacted powder bed of material and employing an energy source to sinter or melt each of the plurality of sequential layers or powders to produce sequential sintered layers, wherein the number of additional layers is determined based on those needed to produce the final structure.

Wire arc additive manufacturing-spinning combined machining device and method are provided. The machining device includes a spinning mechanism and a fused deposition modeling mechanism. The spinning mechanism includes a machine tool and a spinning head. The spinning head is installed on the machine tool by a main shaft, and the main shaft is configured to drive the spinning head to rotate to achieve the movement in three vertical directions. The spinning head includes a spinning base and balls. Each of the balls is installed in a corresponding one of arc grooves at a bottom of the spinning base. The fused deposition modeling mechanism includes a moving track, a robot and a heat source generator. The arc moving track is arranged around the machine tool in a surrounding mode. The robot is movably installed on the moving track. The heat source generator is installed at a tail end of the robot.

A method for preparing an additive manufacturing program includes a loading step, a dividing step, an overhang calculating step, a subdividing step, a maintaining step, and an outputting step. In the loading step, a three-dimensional model is loaded. In the dividing step, the three-dimensional model is divided into divided layers. In the overhang calculating step, an overhang angle or overhang length of the divided layer is calculated. In the subdividing step, at least a part of the divided layer including an overhang portion is subdivided into two or more in a lamination direction. In the maintaining step, neither subdivision of the divided layer nor addition of a support structure supporting the divided layer is performed. The subdividing step and the maintaining step are selectively performed based on the overhang angle or overhang length. In the outputting step, an additive manufacturing program defining a command pertaining to additive manufacturing is output.

Systems and methods for removing an oxide layer in an additive manufacturing process are provided. A direct write machine may be used to create wire bonds for semiconductors. The direct write machine may deposit a conductive print material between bond pads to create interconnections. The bond pads may comprise aluminum and an aluminum oxide layer on an outer surface. The presence of an aluminum oxide layer may decrease the electrical connection between the wire bond and the aluminum substrate. To remove the aluminum oxide layer, an abrasive tool is provided to ultrasonically abrade the aluminum oxide layer while the conductive print material is being deposited. The conductive print material may include abrasive additives materials to further aid in abrading the aluminum oxide layer.

Systems and methods for removing an oxide layer in an additive manufacturing process are provided. A direct write machine may be used to create wire bonds for semiconductors. The direct write machine may deposit a conductive print material between bond pads to create interconnections. The bond pads may comprise aluminum and an aluminum oxide layer on an outer surface. The presence of an aluminum oxide layer may decrease the electrical connection between the wire bond and the aluminum substrate. To remove the aluminum oxide layer, an abrasive tool is provided to ultrasonically abrade the aluminum oxide layer while the conductive print material is being deposited. The conductive print material may include abrasive additives materials to further aid in abrading the aluminum oxide layer.

A complex flow tube for fine sealing coating of a PVC material for an automobile includes a base fixed to a mechanical arm, and a pipeline connected to the base for delivering a PVC sealant; the base is detachably butted with an interface of a PVC gluing pump mounted on the mechanical arm; the PVC gluing pump delivers the PVC sealant through the pipeline to a part to be coated or sealed of the automobile. The complex flow tube may be combined with the metal 3D printing technology, so that the manufactured complex flow tube has the advantages of being convenient to use, simple in structure, high in strength, not liable to break, etc.

A complex flow tube for fine sealing coating of a PVC material for an automobile includes a base fixed to a mechanical arm, and a pipeline connected to the base for delivering a PVC sealant; the base is detachably butted with an interface of a PVC gluing pump mounted on the mechanical arm; the PVC gluing pump delivers the PVC sealant through the pipeline to a part to be coated or sealed of the automobile. The complex flow tube may be combined with the metal 3D printing technology, so that the manufactured complex flow tube has the advantages of being convenient to use, simple in structure, high in strength, not liable to break, etc.

Methods and devices for additive manufacturing of workpieces are provided. For analysis during production, a test is carried out using a selected test method. The test results are compared with simulated test results derived during a simulation of the manufacturing and testing. The test may use one or more of a laser ultrasound test unit, an electronic laser speckle interferometry test unit, an infrared thermography test unit, or an x-ray test unit.

Systems and methods for real time, nondestructive inspection of an object being formed by additive manufacturing is provided. The disclosed systems and methods can be used with any additive manufacturing system and can detect defects introduced during fabrication. In operation, additive manufacturing of the object can be paused and the object rotated within the build chamber. An x-ray pulse can then be directed through a linear aperture towards the object being formed inside the build chamber. A linear x-ray detector array can detect the x-ray pulse and an x-ray image of the object being formed can be created. By rotating the object being formed during exposure to the x-ray pulse at least one half of one full rotation, the entire volume of the object can be inspected.

Fission reactor has a shell encompassing a reactor space within which are a central longitudinal channel, a plurality of axially extending rings with adjacent rings defining an annular cylindrical space in which a first plurality of primary axial tubes are circumferential located. Circumferentially adjacent primary axial tubes are separated by one of the plurality of secondary channels and a plurality of webbings connects at least a portion of the plurality of primary axial tubes to adjacent structure. A fissionable nuclear fuel composition is located in at least some of the plurality of secondary channels and a primary coolant passes thorough at least some of the primary axial tubes. Additive and/or subtractive manufacturing techniques produce an integral and unitary structure for the fuel loaded reactor space. During manufacturing and as-built, the reactor design can be analyzed using a computational platform that integrates and analyzes data from in-situ monitoring during manufacturing.