A aerodynamic particle separator for an Additive Manufacturing System (AMS) has an air supply device to entrain a mixed powder in an airstream flowing through a housing. Each particle in the mixed powder is imparted with a momentum dependent upon the particle weight and size. Utilizing this momentum characteristic, the heavier particles are capable of crossing streamlines of the airstream at a bend portion of the housing and the lighter particles generally stay within the streamlines. Utilizing this dynamic characteristic, the particles of specific weight ranges are collected through respective offtake holes in the housing and controllably fed to a spreader of the AMS.

A gas turbine engine component includes a structure having a surface configured to be exposed to a hot working fluid. The surface includes a recessed pocket that is circumscribed by an overhang. At least one cooling groove is provided by the overhang.

A method for producing a three-dimensional object (2) by applying layers of a pulverulent construction material (11) and by selectively solidifying said material by the action of energy comprises the steps: a layer of the pulverulent construction material (11) is applied to a support (6) or to a layer of the construction material that has been previously applied and at least selectively solidified; an energy beam (14) from an energy source (13) sweeps over points on the applied layer corresponding to a cross-section of the object (2) to be produced in order to selectively solidify the pulverulent construction material (11); and a gas flow (18) is guided in a main flow direction (RG) over the applied layer during the sweep of the energy beam (14). The main flow direction (RG) of the gas flow (G) and the sweep direction (RL) of the energy beam (14) are adapted to one another at least in one region of the cross-section to be solidified.

A method, apparatus, and system are provided to monitor and characterize the dynamics of a phase change region (PCR) created during laser welding, specifically keyhole welding, and other material modification processes, using low-coherence interferometry. By directing a measurement beam to multiple locations within and overlapping with the PCR, the system, apparatus, and method are used to determine, in real time, spatial and temporal characteristics of the weld such as keyhole depth, length, width, shape and whether the keyhole is unstable, closes or collapses. This information is important in determining the quality and material properties of a completed finished weld. It can also be used with feedback to modify the material modification process in real time.

An additive manufacturing system includes a cabinet, an electron beam system, at least one imaging device, and a computing device. The cabinet is configured to enclose a component and defines a pinhole extending therethrough. The electron beam system is configured to generate an electron beam directed toward the component. Interactions between the component and the electron beam generate x-ray radiation. The at least one imaging device is configured to detect the x-ray radiation through the pinhole. The computing device is configured to image the component based on the x-ray radiation detected by the at least one imaging device.

Disclosed is a method for generatively producing components by layer-by-layer building from a powder material by selective material bonding of powder particles by a high-energy beam. An eddy current testing is carried out concurrently with the material bonding. Also disclosed is an apparatus which is suitable for carrying out the method.

An automated welding apparatus and computer-implemented method are described which generally perform the steps of: scanning a joint interface of a workpiece using a three-dimensional scanner (S4); determining a volume to be filled by a welding process (S6); determining a specification for the welding process based on the volume to be filled using an algorithm (S8, S10); and controlling a welding device so as to execute the specification by moving the welding device relative to the workpiece (S12).

Disclosed is a method for vacuum electron beam welding of twinning-induced plasticity (TWIP) steel and use thereof. The welding method according to the present disclosure includes preheating welding, tack welding, and deep penetration welding. The method according to the present disclosure can achieve welding stability, a uniform butt joint width, small splash and full arc ending, and ensure that the internal quality of a welded joint meets requirements for an ISO13919-1 grade B butt joint, and the plasticity and tensile strength of the welded joint are equivalent to those of a base metal, thereby ensuring that the welded joint has a high energy-absorbing buffering function equivalent to that of a base metal. A vehicle anti-collision beam manufactured after welding and a vehicle energy-absorbing buffer component assembled by using the anti-collision beam have the advantages of light structure, high safety protection, etc.

A method for manufacturing a guide roller for hot wire rolling includes the steps of providing a guide roller made of an Al alloy, the guide roller including a wire guiding surface, and applying a coating onto at least a part of the wire guiding surface by a metallic wire Direct Energy Deposition (DED) operation and/or a metallic powder DED operation.

An additive manufacturing apparatus includes: a coater including: at least one trough including a plurality of side-by-side deposition valves.