A primary joining rotary tool F comprises a stirring pin F2including a circumferential face tapers to become thinner toward a tip portion of the stirring pin, a flat face F3 at the tip portion of the stirring pin F2 and a projecting portion F4 projecting from the flat face F3. Friction-stirring is performed in the primary joining process by inserting the stirring pin F2 that is rotating into an abutted portion J1 in a manner that only the stirring pin F2 is in contact with the base member 2 and the lid plate 5 with the flat face F3 being in contact with the base member 2 and the lid plate 5 and with a tip face F5 of the projecting portion F4 being in contact only with the base member 2.

A method for producing a component from two plates, which are electrically isolating, at least one is optically transparent, and between them at least one planar conductor section and at least one isolator section are formed, comprises bonding the plates at mutually facing bonding faces, wherein a metal layer is arranged therebetween, and processing the metal layer by local heating using laser radiation such that the metal layer is converted into the at least one isolator section in a part region, and the at least one conductor section is formed adjacent thereto. To form the at least one isolator section, the light path of the laser radiation and the component are moved relative to each other to convert the metal layer into the at least one isolator section over a line or area. Bonding faces of metallic bond layers are polished. The plates are bonded by atomic diffusion bonding.

An orthopaedic prosthesis for use in a hip replacement surgery. The orthopaedic prosthesis includes a metallic foam shell and a metallic core. The metallic core includes a neck configured to receive a femoral head component and a stem extending through the metallic foam shell.

A pyrolysis surface such as a rotating retort is provided by copper sheet supported by a nickel alloy framework. Pyrolysis is used to destroy calorific waste and/or to produce gas therefrom.

A method of forming a gas turbine engine according to an example of the present disclosure includes, among other things, attaching a first skin to a main body to enclose at least one internal channel, the first skin and the main body cooperating to define pressure and suction sides of an airfoil, holding the first skin and the main body between first and second dies, and pressurizing the at least one internal channel such that walls of the first skin and the main body move outwardly toward surface contours of the first and second dies. A gas turbine engine component is also disclosed.

Methods are disclosed for forming metal workpieces made from a heat-treatable metal that has been shaped and tempered according to specified protocols that facilitate formation of large contoured unitary metal structures having welds that are retained in the finished structure, and finished metal structures made according to such methods.

A device for establishing a bonding connection, with a bonding head mounted so as to rotate about an axis of rotation, and a transducer (1) mounted on the bonding head. The transducer (1) has a piezo actuator (5) for generating ultrasonic vibration, in particular a natural ultrasonic vibration. Electrodes are (20) provided on the piezo actuator (5) in such a way that the piezo actuator (5) can be excited by an electric field in a field direction (10) transverse to a polarization direction (9) of the piezo actuator, and as a result of the excitation and of the connection of the piezo actuator (5) to the fastening section (6) and to the tool holder (3), the piezo actuator (5) carries out a shearing motion in a shearing plane (18) formed by the polarization direction (9) and by the field direction (10).

Systems and methods for additively manufacturing or repairing a component using forge welding. The system includes a build platform with support. Additive materials are fed to a deposit location on the build platform. The methods include pressing the additive material onto the deposit location and repeating steps until the total additive manufactured component or repair is complete.

A method for bonding a first substrate and a second substrate includes: forming a protrusion at a partial region of the first substrate; measuring a position of the first substrate after the protrusion is formed in the first substrate; and bonding the first substrate and the second substrate by contacting the protrusion of the first substrate with a surface of the second substrate to form a contact region and enlarging the contact region.

An apparatus for bonding a mask includes a body and a pressing unit on the body. The pressing unit has a gas outlet for spraying pressing gas toward the bonding area of the mask.