A method for producing a built-up object, includes: producing maps beforehand, the maps indicating bead heights BH and bead widths BW corresponding to a base-surface inclination angle θ and a track inclination angle φ, in which the base-surface inclination angle is an angle between a base surface on which the weld beads are to be formed and a vertical direction, and the track inclination angle is an angle between a track direction of the torch and a vertical direction on the base surface; selecting a bead height BH.sub.0 and a bead width BW.sub.0 from the maps correspondingly to the base-surface inclination angle θ and the track inclination angle φ in forming a weld bead on the base surface; and forming the weld bead based on the selected bead height BH.sub.0 and bead width BW.sub.0.

In a metal laminating and modeling method, a three-dimensional modeled object 10 having a main surface 12 and an outer circumferential surface 13 is modeled by sequentially laminating a plurality of metal layers 11m. The metal laminating and modeling method has a metal layer formation step of forming the metal layers 11m by forming a plurality of weld beads 100 so as to be arranged in a horizontal direction on a table 2, and a first end portion weld bead formation step of inclining the table 2 such that a target surface 2f faces in a first inclination direction and forming first end portion weld beads 100a so as to overlap, among a plurality of center weld beads 100c, the center weld beads 100c located at an uppermost end in a vertical direction Dv.

A processing head assembly is disclosed. In some examples, the processing head assembly comprises a fabrication energy source; a wire feedstock surrounded by a shield and one or more filler feedstocks surrounded by one or more nozzles. In some examples, the fabrication energy source includes the wire feedstock surrounded by the shield. A method of depositing material on a substrate using a processing head assembly for use with a fabrication energy source; a wire feedstock surrounded by a shield and one or more filler feedstocks surrounded by one or more nozzles is disclosed. In some examples, the method comprises projecting a fabrication energy beam from the fabrication energy source onto the substrate at a spot, projecting the wire feedstock surrounded by the shield onto the substrate at the spot and projecting the one or more filler feedstocks surrounded by the one or more nozzles onto the substrate close to the spot.

A method and apparatus for depositing metals and metal-like substances in two and three dimensional form without a substrate in a safe, rapid and economical fashion using gas shielded arc welding equipment and programmable robotic motion. The method and apparatus includes the use and application of robotic controls, temperature and position feedback, single and multiple material feeds, and semi liquid deposition thereby creating near net shape parts particularly well suited to rapid prototyping and lower volume production.

A processing head assembly is disclosed. In some examples, the processing head assembly comprises a fabrication energy source; a wire feedstock surrounded by a shield and one or more filler feedstocks surrounded by one or more nozzles. In some examples, the fabrication energy source includes the wire feedstock surrounded by the shield. A method of depositing material on a substrate using a processing head assembly for use with a fabrication energy source; a wire feedstock surrounded by a shield and one or more filler feedstocks surrounded by one or more nozzles is disclosed. In some examples, the method comprises projecting a fabrication energy beam from the fabrication energy source onto the substrate at a spot, projecting the wire feedstock surrounded by the shield onto the substrate at the spot and projecting the one or more filler feedstocks surrounded by the one or more nozzles onto the substrate close to the spot.

A method and apparatus for depositing metals and metal-like substances in two and three dimensional form without a substrate in a safe, rapid and economical fashion using gas shielded arc welding equipment and programmable robotic motion. The method and apparatus includes the use and application of robotic controls, temperature and position feedback, single and multiple material feeds, and semi liquid deposition thereby creating near net shape parts particularly well suited to rapid prototyping and lower volume production.

The present disclosure provides downhole tools, methods for three dimensional printing hardfacing on such downhole tools, and systems for implementing such methods.

A method for producing a built-up object by melting and solidifying a filler metal to form weld beads on a base surface along a track for a torch and form the built-up object formed by the weld beads is provided. The built-up object includes a bead formation portion where a gravitational influence is maximum. The method includes: forming a supporting bead having a higher viscosity during weld-bead formation than other weld beads in the bead formation portion; and forming the other weld beads overlying the supporting bead.

A method of fabricating an optical mirror including disposing a build plate for three-dimensional (3D) printing. The build plate having a first side and a second side opposite the first side. The method also including integrally forming a support structure via the 3D printing on the first side of the build plate, and processing the second side of the build plate to obtain a reflective surface of the optical mirror.

The disclosure provides a method for preparing a multiple-material variable-rigidity component by efficient collaborative additive manufacturing, relates to the technical field of additive manufacturing. In the disclosure, the method comprises: pretreating a component structure model and dividing the component structure model into a lightweight part with complex pore structures and a solid part that needs to be manufactured rapidly; preparing the lightweight part by a selective laser melting prototyping; performing a surface treatment on the prepared lightweight part to obtain a treated lightweight part; preparing the solid part on the treated lightweight part by a wire arc additive manufacturing, to obtain a component.