What is the sla laser rapid prototyping process in 3D printing?
The so-called sla laser rapid prototyping process is also known as the SLA process, also known as stereo lithography or photo-curing process. In 1986, the United States 3D Systems introduced the world's first stereo lithography machine, namely SLA-1. Series molding machines are firmly occupying the market share of 3D printing equipment.
Sla laser rapid prototyping is based on the principle of photopolymerization of liquid photosensitive resin. Under the irradiation of ultraviolet light of a certain wavelength and intensity, this liquid material can rapidly undergo photopolymerization, which results in a sharp increase in molecular weight and the material changes from a liquid state to a solid state.
So when the scanning of one layer is completed, the area that is not exposed is still liquid resin. After that, the lifting platform will drive the platform to drop a layer of height, and a layer of resin will be covered on the formed layer. One layer is firmly glued to the previous layer, and this is repeated until the entire part is manufactured, so as to finally obtain a three-dimensional solid model