SLA (Stereolithography) is the earliest rapid prototyping technology.
Technical advantages of SLA
Fine surface quality, high accuracy (25mm), higher resolution, forming method has nothing to do with the complexity of structure
Application of SLA
SLA is ideal for making medium and small parts, resin or other plastic products can be made directly. It is mainly used in the prototyping of conceptual models, or for simple assembly inspection and process planning. Since the forming method has nothing to do with the complexity of structure, Therefore, SLA is more suitable for some complex electronic products, such as computers and peripheral products, stereo, cameras, mobile phones, MP3, PDA, cameras and so on. And some household appliances with complex structure, such as electric iron, hair dryer, vacuum cleaner, etc.
After removing the untreated resin, the prototype should be fully post-cured. Because of the layered processing, there are stair-like lines on the surface of the model. Surface sandblasting can remove step lines and obtain better surface quality. The forming direction has a great influence on the stair-like lines and forming time. Usually, along the long axis, vertical forming takes longer time but has smaller step lines. Placing the prototype horizontally along the long axis will shorten the forming time, but the step lines will increase significantly. Spraying paint can make the parts more beautiful.
During the manufacturing, if the top of prototype is too weak, it is necessary to build a brace to support it. Using the software can do the structure, and it can help molding.
1.high accuracy, it can produce products with accuracy up to <0.10mm.
2.Molding with ease. It can form fine structure, buckle and decorative thread.
3.High performance on post-processing. This is mainly because the hardness of photosensitive resin is not high, so it is easy to polish and modify, and the surface finish of the parts is good.
The strength of the material is slightly worse than that of ABS, and it is not heat-resistant, so it is not suitable for functional testing parts under stress and heat.
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