An additive manufacturing system configured to manufacture a component including scan strategies for efficient utilization of one or more laser arrays. The additive manufacturing system includes at least one laser device, each configured as a laser array, and a build platform. Each laser device is configured to generate a plurality of laser beams. The component is disposed on the build platform. The at least one laser device is configured to sweep across the component and the build platform in at least one of a radial direction, a circumferential direction or a modified zig-zag pattern and simultaneously operate the one or more of the plurality of individually operable laser beams corresponding to a pattern of the layer of a build to generate successive layers of a melted powdered material on the component and the build platform corresponding to the pattern of the layer of the build. A method of manufacturing a component with the additive manufacturing system is also disclosed.

A low-temperature joining method effectively suppresses reductions in the mechanical properties of a junction of various types of high-tensile steel or aluminum, and of a heat-affected zone; and produces a joint structure. A method for joining two metal materials by forming a joint interface in which the two metal materials face each other at a joint portion and plunge a rotation tool caused to rotate at a prescribed speed into the joint, the method for low-temperature joining of metal materials characterized in that the peripheral velocity of the outermost periphery of the rotation tool is set to 51 mm/s or less, whereby the recrystallization temperature inherent to the metal materials is reduced by introducing a large strain to the joint, and recrystallized grains are generated at the joint interface by setting the joining temperature to less than the recrystallization temperature inherent to the metal materials.

The disclosure describes assemblies, systems, and techniques for reinforcing complex geometries of pressure vessels using a pre-sintered preform (PSP) braze material that includes a low-melt powder and a high-melt powder. An example technique includes positioning a PSP reinforcement on a surface of a substrate. The technique includes heating the PSP reinforcement to soften or melt at least one constituent metal or alloy of the low-melt powder. During heating, the PSP reinforcement is configured to conform to a contour of the surface of the substrate. The technique also includes cooling the PSP reinforcement to define a reinforced component.

In a laser processing method, laser lights of fiber lasers or direct diode lasers is irradiated onto an iron-based plate material from a nozzle, a nozzle with a nozzle opening whose opening diameter is preliminarily set according to a thickness of the plate material is selected from plural nozzles whose nozzle openings have different opening diameters from each other, and the plate material is cut while irradiating the laser lights onto the plate material and injecting assist gas from the nozzle opening toward the plate material.

A three-dimensional deposition device and a three-dimensional deposition method used to highly accurately manufacture a three-dimensional object are provided. A three-dimensional deposition device for forming a three-dimensional shape by depositing a formed layer on a base unit includes: a powder supply unit which supplies a powder material; a light irradiation unit which irradiates the powder material with a light beam so that at least a part of the powder material irradiated with the light beam is sintered or melted and solidified to form the formed layer; a heating unit which selectively heats an area having passed through a position irradiated with the light beam in the base unit or the formed layer or an area not having passed through the position irradiated with the light beam; and a control device which controls operations of the powder supply unit, the light irradiation unit, and the heating unit.

There is provided a linear friction welding method of joining a first member with a second member. The linear friction welding method includes bringing a first plane, a second plane and a first corner portion in an R shape or in a chamfered shape of a first joint surface of the first member into contact with a third plane, a forth plane and a second corner portion in a shape that matches the shape of the first corner portion of a second joint surface of the second member; vibrating either the first member or the second member along an extending direction of the first corner portion and the second corner portion; and joining the first member with the second member by using frictional heat that is generated by friction between the first joint surface and the second joint surface.

An additive manufacturing system includes an additive manufacturing tool configured to supply a plurality of droplets to a part, a temperature control device configured to control a temperature of the part, and a controller configured to control the composition, formation, and application of each droplet to the plurality of droplets to the part independent from control of the temperature of the part via the temperature control device. The plurality of droplets is configured to build up the part. Each droplet of the plurality of droplets includes at least one metallic anchoring material.

A dissimilar-metal joining tool that places a ring-shaped joining auxiliary member made of iron, on a surface of a workpiece in which a second metal plate made of non-ferrous metal is laminated on a first metal plate made of iron, coaxially with a through-hole penetrates the second metal plate, and that performs arc welding toward an inner hole of the joining auxiliary member, the dissimilar-metal joining tool includes a base attached to a distal end of a robot; an arc welding torch attached to the base; a positioning mechanism provided in the base, and places the inner hole at a joining position in the arc welding torch and holds the joining auxiliary member in a radially-positioned state; and a pressing mechanism presses the joining auxiliary member in the vicinity of an outer peripheral edge.

The invention provides methods of making laminated devices (especially microchannel devices) in which plates are assembled and welded together. Unlike conventional microchannel devices, the inventive laminated devices can be made without brazing or diffusion bonding; thus providing significant advantages for manufacturing. Features such as expansion joints and external welded supports are also described. Laminated devices and methods of conducting unit operations in laminated devices are also described.

A method for producing a component by means of an additive manufacturing method using a laser is proposed, the method comprising the following steps: (a) providing a metal powder, (b) applying a powder layer (18) of the metal powder to a build platform (14) of a process chamber (12), (c) introducing a first process gas into the process chamber (12), (d) melting a first selected region (36) of the applied powder layer (18) by means of a laser in a first atmosphere which includes the first process gas, (e) introducing a second process gas into the process chamber (12), wherein the second process gas differs from the first process gas at least in terms of its composition and/or its pressure, and (f) melting a second selected region (38) of the applied powder layer (18) by means of the laser in a second atmosphere which includes the second process gas, wherein the second selected region (38) differs from the first selected region (36).