3D printing (3DP) is a kind of rapid prototyping technology, also called as additive manufacturing. It is a digital model file based, using powder metal or plastic and other adhesive materials, through layer-by-layer printing to construct.
With the continuous development of industrial modernization, traditional manufacturing processes have been unable to meet the processing of modern industrial components, especially some special-shaped structures, which are difficult to produce or impossible to produce by traditional processes. 3D printing technology make everything possible.