B23K3/087

Process for producing a plate heat exchanger and plate heat exchanger

A plate heat exchanger has two metal plates brought into abutment, with a solder material between the plates. The plates are heated up to a first temperature. The plates are placed into a mold, the mold surfaces of which have cavities for envisaged channel structures. Channel structures are formed by local internal pressure forming of at least one plate under pressurization by the tool. The plates are heated up to a second temperature. The plates are solder bonded at the abuted surfaces. A plate heat exchanger has two metal plates, wherein channel structures have been formed in at least one plate and the plates are bonded to one another by soldering away from the channel structures. Eutectic microstructures having a longest extent of less than 50 micrometers are formed in the solder layer.

REPAIR METHODS AND SYSTEMS FOR HONEYCOMB STRUCTURES IN GAS TURBINE ENGINES

A method of applying a braze component to a honeycomb structure may comprise: applying at least a partial vacuum within a chamber, the chamber defined at least partially by a vacuum device and a cover, the honeycomb structure disposed within the chamber, the braze component disposed between the honeycomb structure and the cover; pulling the cover towards the braze component in response to applying the partial vacuum; and pulling the braze component into a plurality of hexagonal cells defined by the honeycomb structure in response to pulling the cover towards the braze component.

SOLDERING OF END CHIP COMPONENTS IN SERIES

A method for printed circuit board design rework utilizing two components in series, the method includes selecting a first chip component and a second chip component for placement on an original land location previously occupied by an original chip component. The method further includes placing the first chip component and the second chip component on a chip component support structure. The method further includes soldering a first end of the first chip component to a first end of the second chip component. Responsive to transferring the first chip component and the second chip component to the original land location, the method further includes soldering a second end of the first chip component to a first land of the original land location. The method further includes soldering a second end of the second chip component to a second land of the original land location.

Robotic Wire Termination System
20230074234 · 2023-03-09 ·

A robotic wire termination system for efficiently and accurately connecting a plurality of wires to an electrical connector having a plurality of connector pins with corresponding wire receptacles. The system generally includes a housing, a removable alignment plate, a robotic positioner, a heating device, a touch responsive display, and a control unit. The alignment plate removably holds a selected electrical connector in a specific position and orientation with the connector pins exposed in the housing and the wire receptacles exposed outside. The display provides a visual representation of the connector pins and selections of the connector pins. The control unit receives inputs indicating the pin selections and controls the robotic positioner to sequentially move the heating device along three orthogonal longitudinal axes to a series of heating positions relative to the selected connector pins to provide heat for melting solder to connect wires to the wire receptacles.

Bonding apparatus and semiconductor package fabrication equipment including the same

A bonding apparatus includes a body part; a vacuum hole disposed in the body part; a first protruding part protruding in a first direction from a first surface of the body part; a second protruding part protruding from the first surface of the body part in the first direction and spaced farther apart from a center of the first surface of the body part than the first protruding part in a second direction intersecting with the first direction; and a trench defined by the first surface of the body part and second surfaces of the first protruding part, the second surfaces protruding in the first direction from the first surface of the body part, and the trench being connected to the vacuum hole, wherein the second protruding part protrudes farther from the first surface of the body part in the first direction than the first protruding part.

Selective soldering system for selective wave soldering of circuit boards comprising gripping unit for exchanging solder nozzles
11623291 · 2023-04-11 · ·

Selective soldering system for selective wave soldering of circuit boards, including a solder pot, a solder nozzle which can be detachably arranged on the solder pot, wherein the solder nozzle has a nozzle base and a nozzle neck, wherein at the free end of the nozzle neck a nozzle opening is provided, the solder pot being arranged on a moving unit, which can be moved along an x and y axis in a horizontal plane and along a z axis in the vertical direction, and a control unit for controlling the moving unit.

WELDING CONNECTION ELEMENT
20230103964 · 2023-04-06 ·

A welding connection element includes a body and an assembly portion. The body includes a fitting fastening portion having an elastic withdrawal space. The elastic withdrawal space is capable of elastically withdrawing two or more fastening portions, so as to enable the fastening portions to be receivingly fastened in another object. The welding connection element has a welding surface configured to be welding connected to a welding surface of the object. The welding surface of the object is provided in advance with a solder layer configured to be heated and to welding connect the welding connection element and the welding surface of the object. The welding connection element is provided at a carrier in advance, taken out by a tool, compared with an assembly position of the object by a comparison device, and placed at the assembly position by the tool so as to be assembled with the object.

Device for manufacturing electric component and method for manufacturing electric component

An electric component manufacturing device includes a preheater that contacts and preheats a transported work, a melting heater that is downstream of the preheater in a transport direction of the work and contacts and heats the work at a temperature which is higher than a temperature of the preheater and at which a solder melts, a cooler that is downstream of the melting heater in the transport direction and contacts and cools the work, and a transporter that supports and transports the work to sequentially contact the preheater, the melting heater, and the cooler in this order. The transporter performs intermittent transport in which the work is transported from the preheater to the melting heater without stopping to contact both the preheater and the melting heater at the same time, and then the work stops on the melting heater.

APPARATUS AND METHOD FOR MAKING INTERNALLY FINNED PRESSURE VESSEL
20230147928 · 2023-05-11 ·

An apparatus for fabricating an internally finned pressure vessel includes a plurality of positioning discs, each of the positioning discs defining a plurality of circumferentially spaced slots extending radially into the positioning disc from a perimeter thereof, and one or more rods extending through the plurality of positioning discs, the plurality of positioning discs being held in axial alignment by the one or more rods. A method of fabricating the internally finned pressure vessel includes providing the apparatus, loading a plurality of fins into the slots of the positioning discs, inserting the apparatus containing the plurality of fins into a pressure vessel, attaching the plurality of fins to the pressure vessel by a brazing process, and removing the apparatus from the pressure vessel.

Methods and apparatuses for assembling radiating structures for a base station antenna

A radiating structure assembly system includes a movable conveyor that supports fixtures. Work stations are spaced about the conveyor such that the fixtures are moved sequentially to position the fixtures at the plurality of work stations. A first work station includes a loading assembly for loading the radiating elements on the fixtures. A second work station includes a first automated vertical assembly machine for mounting a first printed circuit board to the radiating element. A third work station includes a second automated vertical assembly machine for mounting a second printed circuit board to the radiating element to create a dipole assembly. A holding device is movable with the conveyor aligns and supports the first and second printed circuit boards relative to the radiating element. A fourth work station includes an unloading assembly for removing the dipole assembly from the conveyor.