Titlebook: Laser Powder Bed Fusion of Additive Manufacturing Technology; Di Wang,Yongqiang Yang,Chaolin Tan Book 2024 National Defense Industry Press

说明

Introductions, technology includes selective laser sintering (SLS), selective laser melting (SLM), electron beam melting (EBM), etc. Among them, SLM uses a laser as the heat source to selectively melt the powder bed to fabricate metal parts, which is also known as laser powder bed fusion (LPBF) technology.

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Unstable Factors and Types of Defects in Laser Powder Bed Fusion Process,ing software and the necessary supporting structure is added, then the scanning path is planned, and the processed data contains contour information which can control the movement of the laser beam. Then the data is imported into the L-PBF equipment, and the computer will adjust the profile informat

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,Surface Characteristics and Roughness of Laser Powder Bed Fusion Processed Parts,parts, the LPBF formed parts have a poor surface roughness. The poor surface roughness of LPBFed parts can be due to the surface defects such as balling, powder adhesion, connection of coarse particles and discontinuity of melting tracks. In view of the fact that each surface of the part is formed b

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Technology of Quality Detection and Feedback in Laser Powder Bed Fusion Process,y have strong instability and relatively poor repeatability. The research on the quality detection and feedback technology for the LPBF process is the key content to explore the manufacturing and defect mechanism, as well as the inevitable stage to realize the quality control and backtracking of the

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Typical Geometric Shape Features Fabricated Through Laser Powder Bed Fusion,heres, gaps, etc., as shown in Fig. 8.1. These features can represent the basic elements of the parts. The key factors of whether the laser powder bed fusion (L-PBF) technology can form mechanical parts can be reflected by these typical structural features. By manufacturing various typical geometric

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Advanced and Future Development of Laser Powder Bed Fusion,sent: (1) the size of the formed parts is small, unable to meet the market demands for large-size parts, and the future development trend requires more and more size, such as aerospace, shipbuilding industry. (2) The dimensional precision of the formed products can not be compared with the products

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,Surface Characteristics and Roughness of Laser Powder Bed Fusion Processed Parts,nsions and three dimensions. The evaluation parameters of surface roughness include the arithmetic mean deviation . of contour and the evaluation width . of contour element. Since the surface is formed through the overlap of the melting track during the LPBF forming process, the surface will form an