Infiltration,Printing,printing technology Infiltration In 3D Printing
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3D printing is a very fascinating process in themanufacturing world. It isnt a new manufacturing method, but it seems as if itis, as it is only recently becoming much more available to the people andbusinesses. In fact, 3D printing is a relatively underground process at the moment;however it is gaining serious momentum. This style of manufacturing has a widevariety of materials to choose from; over 60 in fact. 3D printing allows forthe creation of virtually anything with virtually no geometrical limits on eachdesign. Organic creations can come out of this manufacturing method, as well asrigid pieces. I want to cover one method of 3D printing in particular, sometimesreferred to as infiltration. This method is used only by a company known as X1with sand, and zcorp. In a nutshell, this manufacturing process uses 3D printingto create a weak and porous product, which is then dipped in epoxy, wax, orsuper glue. Whatever chemical ormaterial that the 3D part is dipped in will then fill into the product likewater to a sponge. Based on the final product being so porous, it doesnt takemuch for the wax, epoxy, or super glue to fill in, yielding a reasonablyhardened product. Let me cover the full process. Like all 3D printing processes, a computer image will haveto be created in some form of CAD software by an engineer or 3D developer. Thiscomputer file will then be sent to the advanced computer on the 3D printer. All3D printing processes are CAM processes, or computer-aided-manufacturingprocesses. What does this mean? This means that the computer in the printerwill tell the jets exactly where to move, and when to do it. When the 3Dprinter starts up, it will begin by laying down layers of powdered material onto the build envelope, or the build table within the printer. Each layer isaround 25 microns thick or so. A human hair has a diameter of 20 microns inmany cases. Within each layer, the 3D printing process involves laying down anadhesive chemical to hold the material together in accordance to the 3Dblueprint designed earlier. The 3D printing process will repeat as each layeris laid down and fused together until a final 3D printed product comes through.The product is pulled from the build envelope I mentioned earlier, where theexcess material powder surrounding the product it is recycled. The product willbe covered with excess powder, but it can easily be dusted off. The productthat leaves the printer is very weak. It will have a lot of air trapped withinit; in fact, up to 40% of the product could consist of air. This means that theproduct is very porous. To fix the product from crumbling very easily, aprocess known as infiltration is applied to the product. The product is dippedin epoxy, wax, or superglue to gain integrity. Based off of the porous natureof the product, it will essentially suck up the epoxy, wax, or superglue veryeasily. This results in a final product of a material like sandstone which issomewhat fragile, but very unique.
Infiltration,Printing,printing