It took me more than two hours to reach the original Chinese newspaper and bring you the original link.
This machine is based on a previous research and prototype, called the "Failure Contour Laser Sintering". The objective of this new alternative solution is to bring several merits from both selective laser sintering and laminated object manufacturing. They use phenolic resin coated sand which can be cured at an appropriate temperature to glue sand grains, but can also be invalidated if exposed to a higher temperature.
The paper can be bought here
Therefore, what they do is, simply put, drawing cutting contour lines for each layer of sand (fracture lines) -plus dicing lines for the excess material to be removed easily- and then bulk curing heating after stacking up. Finally, the excess material can be removed.
The comparison is obvious: It works like an MCor machine which glues paper sheets and uses a knife to cut the contours and the dicing lines. You then have a block from which you remove little solid cubes until you reach the solid part that was "trapped" inside.
This approach has several advantages against "traditionally laser sintered" ones, for example by EOS GmbH (see EOSINT S-750). In these machines they use a laser (or even a double laser) to sinter all the sand that corresponds to solid in the CAD model and then you remove the excess material. Thus, the laser time is directly related to the volume of the part, or more precisely to the sum of all the solid surfaces of all layers. In contrast, the time laser time required with this "Failure Contour" technique is related to the surface of the end part, or more precisely to the sum of the lengths of all contours in all layers.
While in very complex parts as some built in plastic surface/volume ratio can be very high, for cast applications, even the most complex, surface to ratio is very low, which means this approach can save an estimated 30% of the time.
A second advantage comes from the bulk sintering process. In the "traditional sand sintering" process parts are fragile and very risky to transport by car or truck, apart from being really expensive. In this case I understand the traditional oven sintering makes tougher parts.
Another personal opinion from the published images is that surface result is really nice, but I don't know if they have been hand polished for the photo.
And no, definitely I can't read Chinese but the automatic translation tool is amazing.
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