With molten metal in the unsupported 3D printing

Tweet

Metal fabrication for 3D printing is nothing new, NASA has long been manufacturing metal powder with a laser and rocket nozzles anything else, but these are covered with a metal powder layer by layer, go, and then use high-energy laser burning melting parts needed then covered with the next layer, to continue burning melting (ie, selective laser sintering, abbreviated "SLS") so manufactured, burning melting powder condensed into parts without the use of powder left in place during the printing process plays a support structure . And recently a group of North Carolina State University researchers have developed a method without actually supporting structure, the direct use of molten Aluminium Magnesium Alloy powder to print high-tech manufacturing. Compared to laser sintering, this approach is more like their lumps of metal beads using a building-block house to play, full of childlike. Extruding the needle from the thin liquid sprayed welding alloy powder droplets, the droplets by controlling the length of time exposed to air to control the shape, the metal will quickly retraced cut droplets fall, if it can form high-speed jet of a whole long .        Do not look at these "skills" is very simple, it can take the dog out of the complex structure than the balloon.