3D PRINTINGGuangxi UniversityApr.18th,2017What is 3D printing?3D printing or additive manufacturing is a process of making three dimensional solid objects from a digital file.It is a rapid prototyping technology,based on the digital model file, using powdery metal , plastic and other adhesive materials, through the layers of the way to build objects to the technology.How does 3D printing work?Three elementsdigital file3D printermaterialmetalNylon glass fiberPLAResinrubberPhotosensitive resinThree elementsdigital file3D printermaterial 3D printing mainstream technologyFDM（Fused Deposition Modeling）SLA（Stereolithigraphy Apparatus）3DP（Three Dimensional Printing and Gluing）SLS (Selecting Laser Sintering)FDM（Fused Deposition Modeling）熔融沉积快速成型熔融沉积快速成型By melting the filamentous material，those molten material will melt and squirt out from the nozzle.It will be deposited in the production panel or a layer of solidified material.When the temperature was lower than the curing temperature,It will began to cure, and form the final product through stacking materials layer by layer.Advantages： Simple structure Easy to design Low manufacturing costsMain material： ABS PLA CompositeSLA（Stereolithigraphy Apparatus）光固化成型光固化成型SLA is the earliest developed rapid prototyping technology, and also is one of the most in-depth,mature and widely used rapid prototyping technology.The main materials of SLA is photosensitive resin.It through ultraviolet light or other light source solidification molding, layer by layer curing, get the final product ultimately.3DP（Three Dimensional Printing and Gluing） 三维粉末粘接三维粉末粘接3DP working principle:Firstly paving a layer of powder, and then using the nozzle to spray the adhesive in the need to shape the area, so that the material powder bonded together and form of cross-section.Advantages： forming fast the product is rich in colorMain material： ceramic powder metal powder plastic powderSLS (Selecting Laser Sintering)选择性激光烧结选择性激光烧结The powder material is sintered under laser irradiation and is piled up by a computer control.But the overall technical is very difficulty and the manufacturing and maintenance costs are very high.Thanks for listening