Abstract:
The present invention relates to a fused deposition nozzle modeling process with a coaxial hot air stream nozzle for process improvement. The coaxial hot stream can help to improve the bonding between layers, increase the deposition rate owing to the controlled excess of energy, and reduce the local stresses due to a better management of the cooling rate. Furthermore if metallic, ceramic powders are added in the hot stream, new properties could be brought to the plastic part, such as for example electrical conductivity, magnetic behavior.
Abstract:
Verfahren zur Herstellung eines Bauteils (1) aus aushärtbarem Material, wobei in einem ersten Verfahrensschritt mindest eine Lage (2, 3) des Materials in einem 3D-Druckverfahren in einer Richtung gedruckt, in einem zweiten Verfahrensschritt mindestens ein Bewehrungselement in die Lage(n) (2, 3) eingebracht, und die beiden Verfahrensschritte bis zur Fertigstellung des Bauteils (1) zyklisch wiederholt werden, dadurch gekennzeichnet, dass jedes Bewehrungselement als sich in Richtung der Lagen (2, 3) erstreckender Strang (4) mit einem senkrecht zu den Lagen (2, 3) oszillierenden, periodischen Muster ausgebildet ist und sich über mindestens zwei Lagen (2, 3) erstreckt.
Abstract:
A system and corresponding method for additive manufacturing of a three- dimensional (3D) object to improve packing density of a powder bed used in the manufacturing process. The system and corresponding method enable higher density packing of the powder. Such higher density packing leads to better mechanical interlocking of particles, leading to lower sintering temperatures and reduced deformation of the 3D object during sintering. An embodiment of the system comprises means for adjusting a volume of a powder metered onto a top surface of the powder bed to produce an adjusted metered volume and means for spreading the adjusted metered volume to produce a smooth volume for forming a smooth layer of the powder with controlled packing density across the top surface of the powder bed. The controlled packing density enables uniform shrinkage, without warping, of the 3D object during sintering to produce higher quality 3D printed objects.
Abstract:
The present disclosure provides three-dimensional (3D) objects, 3D printing processes, as well as methods, apparatuses and systems for the production of a 3D object. Methods, apparatuses and systems of the present disclosure may reduce or eliminate the need for auxiliary supports. The present disclosure provides three dimensional (3D) objects printed utilizing the printing processes, methods, apparatuses and systems described herein.