A method of repairing a rod guide assembly of a fuel control unit of an aircraft engine is provided. The method comprises disconnecting a used spring seat from the rod of the rod guide assembly and welding a replacement spring seat to the rod using an electron beam controlled using a circular beam deflection pattern.

A method and an apparatus for collecting powder samples in real-time in powder bed fusion additive manufacturing may involves an ingester system for in-process collection and characterizations of powder samples. The collection may be performed periodically and uses the results of characterizations for adjustments in the powder bed fusion process. The ingester system of the present disclosure is capable of packaging powder samples collected in real-time into storage containers serving a multitude purposes of audit, process adjustments or actions.

A method of manufacturing a cutting member include cutting a first metal material to form a first portion of the cutting member; cutting second metal material to form a second portion of the cutting member, wherein a first edge of the second portion has at least two line segments, a curve formed by the at least two line segments being mathematically continuously differentiable; welding the first portion and the second portion together; raising the cutting member blank to a first temperature at a first rate and holding raising the cutting member blank from the first temperature to a second temperature at a second rate lower than the first rate and holding, and raising the cutting member blank from the second temperature to a third temperature at a third rate not higher than the second rate and holding.

Provided are a systems and methods for continuously providing a metal wire to a welding torch for manufacturing objects by solid freeform fabrication to provide continuous deposition of metal to the freeform object, especially objects made with titanium or titanium alloy wire.

Methods and apparatus for processing a substrate are provided herein. For example, an RF power delivery compensation circuit comprises a first input configured to receive an RF forward power from an RF power source connected to a processing chamber and a second input configured to receive an RF delivered power from a matching network connected between the RF power source and the processing chamber. The RF power delivery compensation circuit calculates an RF forward power compensation factor based on the RF forward power and the RF delivered power for adjusting the RF forward power delivered to the processing chamber during operation.

A manipulator device such as a robot arm that is capable of increasing manufacturing throughput for additively manufactured parts, and allows for the manipulation of parts that would be difficult or impossible for a human to move is described. The manipulator can grasp various permanent or temporary additively manufactured manipulation points on a part to enable repositioning or maneuvering of the part.

The invention relates to a heat-exchanger element for connection to tubes of a heat exchanger, the heat-exchanger element (1, 29, 32) consisting of a plurality of components (13, 14) welded to each other, and said components (13, 14) being interconnected by electron beam welding and being part of a heat exchanger head.

A system may include a powder source; a powder delivery device; an energy delivery device; and a computing device. The computing device may be configured to: control the powder source to deliver metal powder to the powder delivery device; control the powder delivery device to deliver the metal powder to a surface of an abrasive coating; and control the energy delivery device to deliver energy to at least one of the abrasive coating or the metal powder to cause the metal powder to be joined to the abrasive coating.

A deposition head for a three-dimensional printer with at least one pay-out device which comprises several wire spools, each spool having a wire to be deposited simultaneously with the other wires, a drive system having a drive roller with several grooves, one for each wire to be deposited simultaneously, a wire guide which has a first end, a second end close to a deposition zone during operation, and also a passage hole opening out at each of the first and second ends, the passage hole having several passage sections at the second end, one for each wire to be deposited simultaneously, and each passage section having a section substantially identical to the section of the wire to be guided.

A method of additive manufacture is disclosed. The method may include creating, by a 3D printer contained within an enclosure, a part having a weight greater than or equal to 2,000 kilograms. A gas management system may maintain gaseous oxygen within the enclosure atmospheric level. In some embodiments, a wheeled vehicle may transport the part from inside the enclosure, through an airlock, as the airlock operates to buffer between a gaseous environment within the enclosure and a gaseous environment outside the enclosure, and to a location exterior to both the enclosure and the airlock.