Abstract: A model optimization method for additive manufacturing may include: acquiring an explicit model of a concept design for additive manufacturing; converting the explicit model to an implicit model represented by a signed distance field formed by a shortest distance from each voxel in a working space to a boundary point of the concept design; determining an unfeasible geometric feature for current additive manufacturing and a detection threshold corresponding thereto; subjecting the implicit model to unfeasible geometric feature detection and iterative processing for correction and optimization based on the detection threshold of the determined unfeasible geometric feature, to obtain an optimized implicit model; and converting the optimized implicit model to an optimized explicit model.

Abstract: Various embodiments of the teachings herein include an additive manufacturing method. Some embodiments include: generating a model of a support member using a model of a printing member, wherein at least one portion of the support member is in contact with a lower part of the printing member, and a nitride layer is formed on a surface of the support member; introducing an inert gas into an additive manufacturing printing device, spreading a first material powder in a forming cylinder, performing laser scanning on the first powder using the model; and introducing an ammonia gas into the additive manufacturing printing device, spreading the first material powder in the forming cylinder in the additive manufacturing printing device, performing laser scanning on the first material powder, such that the first material powder is melted, and on the basis of the model of the support member, a nitride layer is formed.

Abstract: Provided are an electric motor, a laminated iron core, and a manufacturing method. In. an embodiment, the method includes S1: introducing inert gas into an additive manufacturing printing apparatus, pouring silicon steel metal particles into a fanning cylinder of the apparatus, and performing laser scanning on the silicon steel metal particles to gradually melt the silicon steel metal particles into at least one silicon steel metal layer; and S2: continuing to pour silicon steel metal particles into the forming cylinder, and stopping performing laser scanning on the silicon steel metal particles or reducing the laser power executing the laser scanning, such that the silicon steel metal particles do not entirely melt and form an insulating layer. Execution of steps S1 and S2 is alternated until a laminated iron core having a plurality of alternating silicon steel metal layers and insulating layers is formed.

Abstract: Provided are an electric motor, a laminated iron core, and a manufacturing method. In an embodiment, the method includes S1: introducing inert gas into an additive manufacturing printing apparatus, pouring silicon steel metal particles into a forming cylinder of the apparatus, and performing laser scanning on the silicon steel metal particles to gradually melt the silicon steel metal particles into at least one silicon steel metal layer; and S2: continuing to pour silicon steel metal particles into the forming cylinder, and stopping performing laser scanning on the silicon steel metal particles or reducing the laser power executing the laser scanning, such that the silicon steel metal particles do not entirely melt and form an insulating layer. Execution of steps S1 and S2 is alternated until a laminated iron core having a plurality of alternating silicon steel metal layers and insulating layers is formed.

Abstract: A manufacturing method is performed in an additive manufacturing printing apparatus. An embodiment of the manufacturing method includes: S1—feeding inert gas into the additive manufacturing printing apparatus, and performing laser scanning on silicon steel metal particles to start to melt the silicon steel metal particles from bottom to top layer by layer into a silicon steel metal layer; S2—feeding treatment gas into the additive manufacturing printing apparatus, performing laser scanning on the silicon steel particles again to enable the treatment gas to react with the molten silicon steel metal particles to finally form an insulating nitride layer, and alternately performing S1 and S2 until the laminated iron core of a structure having a plurality of alternate silicon steel metal layers and insulating nitride layers is formed. An embodiment of the present invention may manufacture a customized laminated iron core with a complex shape and good performance.

Abstract: A 3-D printing method and a 3-D printout are provided. In an embodiment, the 3-D printing method includes laser-scanning a printing material according to a 3-D printing model so that the printing material starts to be sintered into a printout in a shape, layer by layer from the bottom up; and feeding a treatment gas into a 3-D printing device and laser-scan a local area of the printout so that the treatment gas reacts with the surface of the local area of the printout and a hardened layer is formed. The laser scanning and the feeding of the treatment gas are performed alternately until a printout with local hardened layers is formed. By adjusting the gas environment, the components can be manufactured by selective laser melting equipment to have a wear- and corrosion-resistant nitrided surface layer and keep the expected ductility of the central area.

Abstract: At least one embodiment of the present invention provides a sealing telemetry assembly used for a gas turbine. The gas turbine includes at least one turbine disk, and the sealing telemetry assembly includes a sealing cover and at least one power supply apparatus. The sealing cover is used to cover the turbine disk, and the sealing cover includes a cavity forming portion and a cover. At least one installation cavity is provided within the cavity forming portion, and the cover covers and is fixed to the cavity forming portion. The power supply apparatus is configured in the installation cavity. A gas turbine, a sealing cover, and a manufacturing method of a sealing telemetry assembly are also provided. They can improve working performance of the gas turbine, reduce production costs, and monitor an internal working environment of the gas turbine.