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.

Apparatuses, systems and methods for three-dimensional printing

The present disclosure provides three-dimensional (3D) printing methods, apparatuses, and systems using, inter alia, a controller that regulates formation of at least one 3D object (e.g., in real time during the 3D printing); and a non-transitory computer-readable medium facilitating the same. For example, a controller that regulates a deformation of at least a portion of the 3D object. The control may be in situ control. The control may be real-time control during the 3D printing process. For example, the control may be during a physical-attribute pulse. The present disclosure provides various methods, apparatuses, systems and software for estimating the fundamental length scale of a melt pool, and for various tools that increase the accuracy of the 3D printing.

Accurate three-dimensional printing

The present disclosure various apparatuses, and systems for 3D printing. The present disclosure provides three-dimensional (3D) printing methods, apparatuses, software and systems for a step and repeat energy irradiation process; controlling material characteristics and/or deformation of the 3D object; reducing deformation in a printed 3D object; and planarizing a material bed.

Skillful Three-Dimensional Printing

The present disclosure provides three-dimensional (3D) printing methods, apparatuses, systems, and non-transitory computer-readable medium. The disclosure delineates real time manipulation of three-dimensional printing to reduce deformation. The present disclosure further provides 3D object formed using the methods, apparatuses, and systems.

Adept three-dimensional printing

The present disclosure provides three-dimensional (3D) printing processes, apparatuses, software, and systems for the production of at least one desired 3D object. The 3D printer system (e.g., comprising a processing chamber, build module, or an unpacking station) described herein may retain a desired (e.g., inert) atmosphere around the material bed and/or 3D object at multiple 3D printing stages. The 3D printer described herein comprises one or more build modules that may have a controller separate from the controller of the processing chamber. The 3D printer described herein comprises a platform that may be automatically constructed. The invention(s) described herein may allow the 3D printing process to occur for a long time without operator intervention and/or down time.

Three-dimensional printing and three-dimensional printers

A welding method for welding workpieces made of highly heat-resistant superalloys is provided. The method includes generating a heat input zone on the workpiece surface by means of a heat source, feeding welding filler material into the heat input zone by means of a feeding device, and generating a relative motion between the heat source and the feeding device on one hand and the workpiece surface on the other hand by means of a conveying device. Furthermore, according to the welding method, the mass feed rate is ≦350 mg/min.

Method for welding workpieces made of highly heat-resistant superalloys, including a particular mass feed rate of the welding filler material

FIELD: process engineeringSUBSTANCE: invention relates to laser buildup of hardened weld seam on structural element substrate from refractory alloy with directed orientated of dendrites Powder is fed and laser beam is directed on substrate surface to smelt fed powder and substrate surface layer to obtain dendrites 31 in surface layer oriented in direction of substrate dendrites 32 Parameters of laser buildup are as follows: beam scanning rate, laser power, beam diameter, powder stream focus and/or powder flow rate are set to ensure local orientation of temperature gradient 28 at crystallisation front 19 smaller than 45° towards substrate dendrite direction 32 for dendrite 31 in substrate 4 Beam scanning rate is set equal to 30-100 mm/min, preferably 50 mm/min and/or laser power is set equal to 200-500 W, preferably 300 W, and/or beam diameter at substrate surface is set equal to 3-6 mm, and/or powder flow rate is set to 300 mg/min to 600 mg/min, preferably 400 mg/minEFFECT: single direction of dendrite growth, complete melting of powder in the melt7 cl, 4 dwg

Mokadem Selim

Papers

Method for welding workpieces made of highly heat-resistant superalloys, including a particular mass feed rate of the welding filler material

Monocrystalline welding of materials hardened in one direction