Laser Engineered Net Shaping Sandia National （激光工程化净成形桑迪亚国家）.pdf

Laser Engineered Net Shaping Manufacturing Technologies Sandia National Laboratories has developed a new technology to fabricate three-dimensional metallic components directly from CAD solid models. This process, called Laser Engineered Net Shaping (LENS®), exhibits enormous potential to revolutionize the way in which metal parts, such as complex proto- types, tooling, and small-lot production items, are pro- duced. The process fabricates metal parts directly from the Computer Aided Design (CAD) solid models using a H13 Tooling metal powder injected into a molten pool created by a focused, high-powered laser beam. is occurring is scanned under the beam/powder inter- action zone to fabricate the desired cross-sectional Simultaneously, the substrate on which the deposition geometry. Consecutive layers are sequentially deposit- ed, thereby producing a three-dimensional metal com- ponent. This process is similar to other rapid prototyping tech- nologies in its approach to fabricate a solid component by layer additive methods. However, the LENS® tech- nology is unique in that fully dense metal components