Huazhong University of Science and Technology Shu scientific research team after more than 10 years of efforts to achieve a major breakthrough in the development of the world's largest "3D printer." This "3D printer" can be machined parts with a maximum size of 1.2 meters in length and width. Theoretically, as long as the length of the size of less than 1.2 meters of parts (height without restrictions), can be through the machine "print" out.
This technology transforms the complex parts manufacturing into a simple two-dimensional superposition, which greatly reduces the complexity of design and fabrication, makes it quicker to make singular structures that are not machined by traditional methods, and the production of some complex castings is shortened from the traditional 3 months to about 10 days. Dalian University of Technology to participate in the development of the largest processing size of 1.8 meters of the world's largest laser 3D printer into the commissioning phase, its use of "contour scanning" of the unique technical route, can produce large industrial samples and structure of complex casting molds. The three-dimensional laser printing method based on "contour failure" has obtained two national invention patents. The laser 3D printer only needs to print the contour line of each layer of the part, so that the plastic coating resin of sand on the contour line is invalidated, and then the prototype parts or moulds can be obtained by heating and curing the printed sand in the 180 ℃ reheating furnace and after treatment stripping. The processing time of this printing method is proportional to the surface area of the part, which greatly improves the printing efficiency, and the printing speed can reach 5-15 times of the general 3D printing.