A method is provided for manufacturing a segment of a drill string, such as a tubular tool, from a plurality of layers. The method includes arranging a plurality of layers based on a selected length of the segment. Each of the plurality of layers includes an aperture that is received over an alignment feature that restricts movement of the plurality of layers to two or fewer degrees of freedom. A joining process is performed to join the plurality of layers, which may include at least one replacement layer.

The invention relates to a method for producing, in particular generatively producing, and coding a three-dimensional component. Said method comprises the following steps: providing a starting material, supplying a process gas to the starting material, melting the starting material by means of a heat source, and repeating the aforementioned steps. The method according to the invention is characterized in that, at least at a predetermined time interval during the melting of the starting material, a coding component or a coding gas containing a coding component is added to the process gas such that the use of the coding component in the finished object is detectable, and coding information is logged which describes the coding information and the location thereof in the component.

Additive manufacturing can involve dispensing a powdered material to form a layer of a powder bed on a support surface of a build platform. A portion of the layer of the powder bed may be selectively melted or fused to form one or more temporary walls out of the fused portion of the layer of the powder bed to contain another portion of the layer of the powder bed on the build platform.

In various embodiments, additive manufacturing is utilized to fabricate three-dimensional metallic parts using metallic alloy wire as a feedstock material.

An additive manufacturing system including a two-dimensional energy patterning system for imaging a powder bed is disclosed. Improved optical systems supporting beam combining, beam steering, and both patterned and unpatterned beam recycling and re-use are described.

A method of controlling an additive manufacturing process in which one or more energy beams are used to selectively fuse a powder to form a workpiece, in the presence of one or more plumes generated by interaction of the one or more energy beams with the powder. The method includes controlling at least one of: a trajectory of the one or more plumes, and the one or more energy beams, so as to prevent the one or more energy beams from intersecting the one or more plumes.

This disclosure relates to weldability of steel alloys that provide weld joints which retain hardness values in a heat affected zone adjacent to a fusion zone and which also have improved resistance to liquid metal embrittlement due to the presence of zinc coatings.

An additive manufacturing apparatus performs additive machining by controlling a machining head that includes a wire nozzle to feed a wire to a machining region on a surface of a base material, a beam source capable of emitting a beam to an end of the wire, and a gas nozzle placed such that the beam source is interposed between the gas nozzle and the wire nozzle, the gas nozzle directing a gas toward the machining region, and the additive manufacturing apparatus includes a machining-condition selection unit to obtain an angle that is formed between a direction in which the wire is fed and a travel direction of the machining head, when viewed in a direction in which the beam is emitted, and to select a machining condition for the additive machining on the basis of the angle.

An additive manufacturing apparatus performs additive machining by controlling a machining head that includes a wire nozzle to feed a wire to a machining region on a surface of a base material, a beam source capable of emitting a beam to an end of the wire, and a gas nozzle placed such that the beam source is interposed between the gas nozzle and the wire nozzle, the gas nozzle directing a gas toward the machining region, and the additive manufacturing apparatus includes a machining-condition selection unit to obtain an angle that is formed between a direction in which the wire is fed and a travel direction of the machining head, when viewed in a direction in which the beam is emitted, and to select a machining condition for the additive machining on the basis of the angle.

A method of providing a protective titanium layer to an outer surface of an aluminum component includes providing an aluminum component and forming a first layer of titanium-based bulk metallic glass on the component, wherein formation of the bulk metallic glass layer comprises depositing a titanium alloy powder using pulsed directed energy deposition.