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Three major categories of metal 3D printing technology

2024-01-17 10:03

The 3D printing technology of metal parts, as the most cutting-edge and promising technology in the entire 3D printing system, is an important development direction of advanced manufacturing technology. According to the method of adding metal powder, metal 3D printing technology can be divided into three categories:


1. Use laser irradiation to pre spread metal powder, which means that the metal parts will be completely covered by the powder after forming. This method is currently widely adopted by equipment manufacturers and various research institutes, including Direct Metal Laser Sintering (DMLS), Selective Laser Melting (SLM), and Laser Sintering (LC);


2. Laser Engineering Net Shaping (LENS) is used to irradiate the powder flow conveyed by the nozzle, and the laser works simultaneously with the conveyed powder.


3. The method of using electron beam melting (EBM) to melt pre spread metal powder is similar to the first principle, except that a different heat source is used.