Abstract: A method for forming a forming part with an inclined surface and a forming part with an inclined surface wherein the forming method comprises: obtaining a model of the part to be formed; performing layer separating and slicing process to form a plurality of forming layers; a performing scanning path planning on each forming layer, wherein a suspended area and a non-suspended area are provided in a plurality of forming layers forming the inclined surface, frame scanning path comprises a first path and a second path, the first path corresponds to the non-suspended area and the second path corresponds to the suspended area; based on the size of the angle of inclination, setting process parameters for the first path and the second path, and printing layer by layer based on the set process parameters; wherein an energy density in the process parameters of the first path is smaller than an energy density in the process parameters of the second path.

Abstract: A forming method and a forming part with a cantilever structure. The forming method includes: obtaining a model of the part to be formed, adding an inclined supporting portion to the cantilever structure, performing layer separating and slicing process on the model, performing scanning path planning on each forming layer. A suspended area and a non-suspended area are provided in a plurality of forming layers forming the inclined surface, frame scanning path includes a first path and a second path, the first path corresponds to the non-suspended area and the second path corresponds to the suspended area. Based on the size of the angle of inclination, setting process parameters for preparation for the first path and the second path, and printing layer by layer based on the set process parameters for preparation.

Abstract: A method for preparing the prefabricated crack defects includes defining a defect area, defining a volume percentage of the crack defects in the defect area, adjusting the proportion of spherical powder, the proportion of hollow powder and process parameters of defect preparation according to the volume percentage of the crack defects, based on the technique of laser melting deposition, printing the defect area layer by layer by using the defect preparation powder and the process parameters of defect preparation, wherein the particle size of the defect preparation powder is between 45 ?m and 150 ?m, the proportion of spherical powder?93% and the proportion of hollow powder<0.5%, the process parameters of defect preparation including: laser power of 450W-550W, scanning rate of 600 mm/min-1200 mm/min, powder feeding rate of 4 g/min-12 g/min, spot diameter of 1 mm-1.2 mm, scanning spacing of 0.5 mm-0.8 mm and layer thickness of 0.08 mm-0.2 mm.

Abstract: A method for prefabricating a poor fusion defect by controlling a LMD process, including: obtaining a model, with a shaping zone and a defect prefabricated zone that has a preset defect; and performing a layerwise slicing process on the model. For each deposition layer of the defect prefabricated zone, the preset defect has a maximum dimension a0 in a perpendicular direction; for the shaping zone, performing a shaping process under predetermined shaping process parameters of the LMD process; and for the defect prefabricated zone, controlling shaping process parameters as follows: when a0<D, with respect to the shaping zone, changing a scan pitch between shaping paths and a powder feed rate in the deposition layer, thereby prefabricating the poor fusion defect; and when a0?D, with respect to the shaping zone.

Abstract: A method for preparing prefabricated gas pore defects includes: defining a defect area, defining a volume percentage of the gas pore defects in the defect area, adjusting the proportion of satellite powder, the proportion of hollow powder and the process parameters of defect preparation according to the volume percentage of the gas pore defects, based on the technique of laser melting deposition, printing the defect area layer by layer by using the defect preparation powder and the process parameters of defect preparation, wherein the particle size of the defect preparation powder is between 45 ?m and 106 ?m, the proportion of satellite powder is 55-65% and the proportion of hollow powder is 2.9-3.1%, the process parameters of defect preparation comprises: laser power of 600W-1000W, scanning rate of 400 mm/min-800 mm/min, powder feeding rate of 12 g/min-20 g/min, spot diameter of 1 mm-2 mm, scanning spacing of 0.5 mm-1 mm and layer thickness of 0.15 mm-0.2 mm.