Can 3D printing replace traditional manufacturing technologies?

3D printing technology is just a "star member" of the manufacturing technology family, not universal, but also has its scope of application. For example, for some very large size, very complex structures, and very high performance requirements, 3D printing offers advantages such as material savings, ease of processing, shorter cycle times, and lower costs than traditional subtractive material processing techniques. As a well-known expert in the field of 3D printing in China, Wang Huaming, academician of the Chinese Academy of Engineering and professor of Beijing University of Aeronautics and Astronautics, disagreed with the “only 3D printing theory”. Today, the new material and new technology of military and civilian people sponsored by the Hunan Provincial People's Government and China Aerospace Science and Industry Corporation are jointly sponsored. At the summit, he said, “3D printing is just a formative manufacturing technology and cannot replace traditional material-reduction manufacturing processes. Do not belittle what technology is advanced, which technology is backward, and it is appropriate to use it. It may be advanced and the wrong place may be down." 3D printing, also known as three-dimensional additive rapid manufacturing, is based on digital modeling, using plastics, metals, ceramics, rubber, glass, color sand and many other adhesive materials, through the layer-by-layer increase in material "printing" three-dimensional Physical products - hailed as the major symbolic technology of the third industrial revolution, some people even think that this technology will subvert the traditional manufacturing industry. Wang Huaming said today that 3D printing technology is only a "star member" of the manufacturing technology family, not universal, but also has its scope of application. For example, for some very large size, very complex structures, and very high performance requirements, 3D printing offers advantages such as material savings, ease of processing, shorter cycle times, and lower costs than traditional subtractive material processing techniques. "But if the parts are simple, the structure is not complicated, and large-scale production is needed, traditional processes may be faster and cheaper," says Wang Huaming. At present, the main applications of 3D printing technology include additive manufacturing of non-metallic parts, additive manufacturing of biological tissues and organs, and additive manufacturing of high-performance metal components. Of course, Wang Huaming also mentioned that 3D printing still has revolutionary significance for the entire manufacturing industry. For example, he led the team to print out large-scale titanium bearing main load-bearing components for aircraft, which is still difficult to achieve with traditional technology. In future-oriented materials and process requirements, he said that 3D printing and other advanced manufacturing technologies can complement each other and can play a greater role.