A method of repairing a casing for a gas turbine engine, wherein the casing has a wall extending generally axially, and between at least one radially extending flange, the radially extending flange being formed with a plurality of bolt holes, includes the steps of removing a portion of the flange including at least one bolt hole. The removed portion is associated with a defect and a remaining portion of the flange includes at least one non-removed bolt hole. A replacement portion is obtained to replace the removed portion. The replacement portion is secured in an opening left in the flange by the removed portion. A repaired gas turbine engine casing is also disclosed.

A method for manufacturing a rolling or plain bearing ring includes providing a metallic ring member and applying a load carrying surface onto the metallic ring member by use of a steel wire Directed Energy Deposition (DED) operation and/or a steel metal powder DED operation. Preferably, the steel wire and/or the steel metal powder includes 0.10-0.50 wt % of carbon and 0.50-1.20 wt % of boron.

A method for selecting optimum operation performance criteria for a metal working process. The method includes the step of developing a process model relating process parameters for the operation with performance variables for said operation, wherein the process parameters and performance variables are retrievable via integrated multiple data sources, and selecting at least one optimization technique to define a function, said function including process parameters. Moreover, the method includes generating the function for optimization by using acceptable tolerances of a product to be machined as a basis to define ranges for performance variables along with ranges for process parameters, and applying the at least one optimization technique to said function, whereby optimum operation performance criteria are calculated for the process model including process parameters and performance variables to obtain a set of requirements to be used for controlling the metal working process.

A process and apparatus for free form fabrication of a three-dimensional work piece comprising (a) feeding raw material in a solid state to a first predetermined location; (b) depositing the raw material onto a substrate as a molten pool deposit under a first processing condition; (c) monitoring the molten pool deposit for a preselected condition; (d) comparing information about the preselected condition of the monitored molten pool deposit with a predetermined desired value for the preselected condition of the monitored molten pool deposit; (e) solidifying the molten pool deposit; (f) automatically altering the first processing condition to a different processing condition based upon information obtained from the comparing step (d); and repeating steps (a) through (f) at one or more second locations for building up layer by layer a three-dimensional work piece. The apparatus is characterized by a detector that monitors a preselected condition of the deposited material and a closed loop electronic control device for controlling operation of one or more components of the apparatus in response to a detected condition by the detector.

Disclosed is an improved method of manufacturing cooled accelerator grid with full penetration weld configuration. In a preferred form, the method includes the steps of: machining a plurality of stubs, a first and a second end of a plurality of inconel pipes; welding the stubs with the first end of the inconel pipes forming a water connector assembly; machining of a base plate; welding the base plate with the water connector assembly; machining the base plate welded with the water connector assembly, wherein machining further comprises milling of plurality of cooling channels across angled plane of the base plate welded with the water connector assembly; closing of plurality of cooling channels located on the base plate welded with the water connector assembly; and welding each of plurality of external hydraulic circuits with the second end of each of the plurality of inconel pipes.

In manufacturing method of shunt resistor according to the present invention, at least one of first and second conductors that is thicker than a resistance alloy plate member includes a joining surface abutted to the resistance alloy plate member with their edges on one side in a plate-thickness direction being aligned with each other, a first inclined surface that is gradually located on one side in the plate-thickness direction from the joining surface toward the side opposite to the resistance alloy plate member in the plate-surface direction, and a first plate surface extending to the side opposite to the resistance alloy plate member in the plate-surface direction from the first inclined surface. Electron beams or laser is emitted to the joining surfaces of the conductor having the larger thickness and the resistance alloy plate member from one side in the plate-thickness direction to weld the joining surfaces.

Provided in one embodiment is a method of forming a connection mechanism in or on a bulk-solidifying amorphous alloy by casting in or on, or forming with the bulk-solidifying amorphous alloy, a machinable metal. The connection mechanism can be formed by machining the machinable metal.

Provided is a method of manufacturing an outer joint member of a constant velocity universal joint, which is constructed by welding a cup member and a shaft member, the method including: forming the cup member and the shaft member of medium carbon steel; preparing; preparing; bringing the joining end surface of the cup member and the joining end surface of the shaft member into abutment against each other; welding the cup member and the shaft member; and performing, after the welding, ultrasonic flaw detection-inspection from any one of a surface side of the cup member and a surface side of the shaft member, which has the another one of the joining end surface of the cup member and the joining end surface of the shaft member.

An alloy is disclosed, including, by weight, about 13% to about 17% chromium, about 16% to about 20% molybdenum, about 1.5% to about 4% silicon, about 0.7% to about 2% boron, about 0.9% to about 2% aluminum, about 23% to about 27% nickel, about 0.8% to about 1.2% tantalum, and a balance of cobalt. The alloy includes a reduced occurrence of molybdenum silicide Laves phase relative to T800. A welded article is disclosed, including an article and a weld filler deposit joined to the article. The weld filler deposit includes a weld filler material including the alloy. A welding process is disclosed, including applying the weld filler material to the article and forming the weld filler deposit.

The present invention relates to a joining component (10) with a joining surface (12) which has an application area (14) to which a joining material (16) is pre-applied and which can be later activated by means of heat treatment, wherein the application area (14) has a retentive surface structure with elevations (20) forming material undercuts (26), and the joining material (16) at least partially covers the application area (14) and is introduced into the material undercuts (26).