164. What is the stereo lithography (SLA)?
SLA
Rapid Prototyping 3D System was first developed by the United States, and it works like this: the computer transmits to the three-dimensional solid data file, slicing through the machine's software, the driver of a scanning laser head, issued a UV laser beam UV-sensitive resin in the liquid surface to be scanned. Liquid resin surface by the beam irradiation polymerization reactions that form a solid point. Each layer of the scan is complete, the table down the thickness of a solidified, a new layer of liquid resin and covering the surface has been scanned, a scraper this new scratch accurately to ensure that the thickness of the resin layer uniformity. If the entity is suspended on the structure, processing software can prejudge the process and generate the necessary support structure. Entities in order to prevent adhesions forming in the table, processing software must also be the entity to generate a grid at the bottom of the frame, to reduce the physical contact area with the table.
Configuration work is fully completed, the entity should carefully remove the table, with a solvent wash the resin is not solidified again to conduct an overall UV exposure to ensure that all the resins have condensed the firm.