The invention relates to a method for joining two essentially metal sheet-type workpieces. In said method. the edge regions of the workpieces to be joined are placed at a distance from one another, at least one wire-shaped filler material is introduced into a zone between the edge regions before or during the joining process, and edge regions and the filler material are then heated to a predefined joining temperature by at least one first frictional element that moves in relation to the edge regions and the filler material, are subjected to a certain contact pressure, and are joined while being deformed.

In an outer joint member of a constant velocity universal joint, a cup member and a shaft member are made of medium to high carbon steel and welded together. The cup member has a bottomed cylindrical shape that is opened at one end, and includes a cylindrical portion, a bottom portion, and a short shaft section of a solid shaft shape protruding from the bottom portion and having a joining end surface. The shaft member has a solid shaft shape and a joining end surface. The joining end surfaces of the cup and shaft members are brought into abutment against each other, and a high energy intensity beam is radiated from an outer side in a radial direction to form a welded portion. A structure of a molten metal at the welded portion is in a mixed phase of ferrite and granular cementite.

An article is provided and includes a first part having a first edge defined at an intersection of first and second surfaces where the first and second surfaces form a first angle, a second part having a second edge defined at an intersection of third and fourth surfaces where the third and fourth surfaces form a second angle which is different from the first angle and a weld joint formed at locations where the first surface contacts the third surface.

A method of manufacturing an outer joint member of a constant velocity universal joint includes forming cup and shaft members of medium carbon steel, the cup member being manufactured by preparing a cup member having cylindrical and bottom portions being integrally formed, and a fitting hole formed in a thick portion of the bottom portion, the shaft member being manufactured by preparing a shaft member having a fitting outer surface formed at an end portion of the shaft member to be joined to the bottom portion of the cup member, and fitting the fitting hole of the cup member to the fitting outer surface of the shaft member. The method also includes welding the cup and shaft members from an inner side of the cup member to a fitted portion between the cup and shaft members.

Method of repairing and manufacturing of turbine engine components includes application of a transition layer by fusion welding with dissimilar nickel based filler material, preferably comprising from about 0.05 wt. % to about 1.2 wt. % B and other alloying elements, followed by a diffusion and primary aging heat treatment and application of the top oxidation resistance layer using dissimilar nickel based filler materials comprised 3-6 wt. % Al, 0.5-6 wt. % Si, 12-25 wt. % Cr and other alloying elements that enhance strength and oxidation resistance followed by a secondary aging heat treatment and machining of the repaired area to restore geometry of turbine engine components. The inventions also relates to a turbine engine components repaired and manufactured by the method.

This disclosure describes an improved method of electron beam (EB) welding utilizing a collection pocket. The method includes providing a first surface and a second surface, forming a collection pocket in at least one of the first surface and the second surface, coupling the first surface to the second surface at a joining location, and EB welding the first surface and the second surface to each other at the joining location. The collection pocket captures and contains excess weld material to prevent the excess material from escaping the joining location, and also reduces an amount of wall thickness required for EB welding. A method of reconditioning gas turbine components is also disclosed.

The present invention relates to a device and a method for preheating a workpiece to be welded. The device comprises a liquid-cooled induction coil arrangeable in connection with the workpiece, a power supply unit configured to supply AC power to the liquid-cooled induction coil, and a cooling unit configured to convey cooling liquid through the liquid-cooled induction coil. The present invention also relates to a welding system.

This invention relates to a method and arrangement for manufacturing objects by solid freeform fabrication, especially titanium and titanium alloy objects, wherein the deposition rate is increased by supplying the metallic feed material in the form of a wire and employing two gas transferred arcs, one plasma transferred arc for heating the deposition area on the base material and one plasma transferred arc for heating and melting the feed wire.

A welded component for a substrate processing system includes a first component comprised of a first semiconductor material, a second component comprised of the first semiconductor material, a weld region defined between respective unwelded regions of the first component and the second component located on either side of the weld region, and a seam defined in the weld region between the first component and the second component. The weld region is comprised of the first semiconductor material of respective portions of the first component and the second component on either side of the seam that was melted and recrystallized to form the weld region.

Provided are a systems and methods for manufacturing objects by solid freeform fabrication, especially titanium and titanium alloy objects, wherein the deposition rate is increased by using two separate heat sources, one heat source for heating the deposition area on the base material and one heat source for heating and melting a metallic material, such as a metal wire or a powdered metallic material.