Another new method to additively build parts discussed at the recent AMUG Conference was NanoParticle Jetting from XJet. XJet takes stochastic metal-nanoparticles and engulfs them in a proprietary liquid, forming drops. These drops are then jetted in a pattern to build parts. The build chamber is heated to an extremely high temperature so that when each drop touches the build tray, the liquid carrier material holding the metal particles in suspension evaporates and the metal particle material adheres to the layer beneath it.
The result is strong binding of the metal with virtually the same metallurgy as traditionally made metal parts. The metal part will undergo an easy sintering process, with the supports removed simply and with almost no manual intervention.
According to Dror Danai, CBO at XJet, because the metal particles and liquid are delivered in cartridges, you are not handling metal powders, making this a safe approach to additively build with metals.
The XJet printer has 24 print heads, a total of 512 standard inkjet nozzles, each of which can jet 18,000 drops/sec for a total of 221 millions drops/sec in a build.
The size of the metal particles delivers fine detail to the part. You can build thin layers and walls, which will have smooth surfaces. You can build parts of any geometry. The print heads also jet support material as needed.
The technology is fast and scalable. Danai also reported that XJet has partnered with Autodesk.
XJet plans to have a machine at the upcoming RAPID show.