Advantages And Disadvantages Of Light Curing (SLA) Technology
The SLA method is currently the most studied method in the field of rapid prototyping technology and the most mature method in technology. The parts formed by the SLA process have high precision, the processing precision can generally reach 0.1mm, and the raw material utilization rate is nearly 100%. However, this method also has limitations in white body, such as the need for support, resin shrinkage leading to a decrease in precision, and photocurable resin having certain toxicity.
Advantage:
(1) The molding process is highly automated.
(2) High dimensional accuracy.
(3) Excellent surface quality.
(4) It is possible to produce a model with a very complicated structure.
(5) It is possible to directly produce a vanishing type having a hollow structure for investment casting.
Disadvantages:
(1) The physical and chemical changes accompanying the molding process, so the parts are more flexible and require support.
(2) Equipment operation and maintenance costs are high.
(3) There are fewer types of materials that can be used.
(4) Liquid resin has odor and toxicity, and needs to be protected from light to prevent polymerization in advance, which has limitations in selection.
(5) Secondary curing is required.
(6) The performance of liquid resin assimilation is not as good as that of commonly used industrial plastics. It is generally brittle and easily broken, and does not allow machining.
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