SCAN STRATEGY AND POST-PROCESSING FOR POWER BED FUSION OF UHMWPE

원문 (중국어)

Scan strategies and post processing techniques are described for powder bed fusion additive manufacturing workflows using ultra-high molecular weight polyethylene (UHMWPE) powders. In one example, a method for fabricating a part includes generating a three-dimensional model for printing the part, loading the model into a controller of a powder bed fusion tool, generating a scan strategy for individual layers of the part based on the model, where the scan strategy includes a hatch spacing between scan lines in the individual layers, and forming an intermediate part from UHMWPE powder using the tool based on the scan strategy. The method can also include one or more post processing steps, such as heating the intermediate part in an oven at a temperature above the melt temperature of the UHMWPE powder for a period of time in an inert atmosphere, to finish the part.