In recent years, 3D printing has been hot, from the initial military, high-precision and other large-scale industrial applications to the current civilianization of 3D printing. So what is 3D printing? How is it different from ordinary printing? Everyone knows that ordinary printing is to display the materials that need to be printed on 2D paper. The consumables used are ink, toner and so on. And 3D printing, as its name implies, is a 3D stereoscopic print.
Need to print a 3D solid object, then we first need to use the computer's 3D modeling software to create a model of the required printed items, and slice, transfer the sliced data to the 3D printer, the 3D printer layer 3D items according to the slice data Print it out and eventually form a real object. The consumables of 3D printers are mainly determined by the printing technology used. What are the main consumables we use when printing?
First, the main consumables using fused deposition rapid prototyping technology are ABS and PLA
The consumables of the rapid deposition process of fused deposition are generally thermoplastic materials, such as ABS, PLA, etc., which are made of filamentary materials. The printing materials are heated in the nozzle to melt, and the nozzles are trajectory with the cross-sectional profile of the parts, and will melt at the same time. The material is extruded and cured rapidly at room temperature. The printing technique is stacked from the bottom to the top, and the upper layer plays a role in positioning and supporting the current layer.
Second, the main consumables using photocuring technology is photosensitive resin
This technology is the earliest 3D printing technology and is a rapid prototyping process based on the photopolymerization principle of liquid photosensitive resin. The material rapidly undergoes photopolymerization under ultraviolet light of a certain wavelength and intensity, and changes from a liquid state to a solid state. Photocuring is the most mature technology for 3D printing. The layer thickness can be controlled to about 0.1mm, so the precision of the molded product is high. The new ones can be cured with high-resolution digital light processor projectors, and the material properties, details and finish of the new technology can be compared to injection molded parts.
Third, the main consumables using selective laser sintering technology is powder materials.
The selective laser sintering technique is to spread the material powder on the upper surface of the formed part and quickly flatten it. The high-strength laser is used to scan the cross-section of the part on the freshly laid layer. The material powder is irradiated by high-intensity laser. Sintering together to obtain the cross section of the part and bonding with the formed part below; after the one section is sintered, a new layer of material powder is applied and the lower cross section is selectively sintered.
After years of development, 3D printing applications are becoming more and more popular, and now there are long-term applications in the fields of jewelry, footwear, construction, automotive, aviation, and medical. At the beginning of this year, the University of California, San Diego, for the first time used rapid 3D printing technology to create a spinal scaffold that mimics the structure of the central nervous system, which successfully helped the rat to resume motor function. I believe that after a long time, 3D printing technology will be closer to our lives, and can be applied in more fields.