9results about "Evacuating shielding" patented technology

The invention provides surfacing integrated equipment for a hydrogenation reactor shell ring, and relates to the technical field of surfacing, the surfacing integrated equipment comprises a telescopic part, a welding part is arranged at the action end of the telescopic part, and the action end of the telescopic part is used for enabling the welding part to move in the axial direction of the shell ring; the welding part comprises a feeding assembly, a feeding head and a recycling assembly, the feeding assembly conveys a welding strip and unused welding flux to the surface of the shell ring through the feeding head, the used welding flux on the surface of the shell ring is recycled through the suction end of the recycling assembly, and the used welding flux is conveyed to the feeding head through the discharging end of the recycling assembly; the adjusting assembly in the feeding head can adjust the proportion of the unused welding flux to the used welding flux in the feeding head, the used welding flux with the high temperature is quantitatively provided for the surface of the shell ring while the welding flux is saved, heat loss of a molten pool is slowed down, and thermal stress caused by the too high cooling speed of the molten pool is avoided.

A processing head assembly is disclosed. In some examples, the processing head assembly comprises a fabrication energy source; a wire feedstock surrounded by a shield and one or more filler feedstocks surrounded by one or more nozzles. In some examples, the fabrication energy source includes the wire feedstock surrounded by the shield. A method of depositing material on a substrate using a processing head assembly for use with a fabrication energy source; a wire feedstock surrounded by a shield and one or more filler feedstocks surrounded by one or more nozzles is disclosed. In some examples, the method comprises projecting a fabrication energy beam from the fabrication energy source onto the substrate at a spot, projecting the wire feedstock surrounded by the shield onto the substrate at the spot and projecting the one or more filler feedstocks surrounded by the one or more nozzles onto the substrate close to the spot.

Powder feed nozzle (100) for a welding device, with a base body (110) which has a main section (111) and an outlet section (112) adjacent to the main section (111), wherein the outlet section (112) has an outlet opening (113), with at least one coolant supply line (115A, 115B, 115C) extending axially along the main section (111) and with at least one coolant discharge line (116A, 116B, 116C) extending axially along the main section (111), wherein the at least one coolant supply line (115A, 115B, 115C) and the at least one coolant discharge line (116A, 116B, 116C) are connected via at least two coolant connecting lines (117A, 117B, 117C) extending radially at least partially around the outlet section (112), characterized in that at least two coolant pairs (114A, 114B, 114C) are each provided with a coolant supply line (115A, 115B, 115C), a coolant discharge line (116A, 116B, 116C) and at least two coolant connecting lines (117A, 117B, 117C), wherein the coolant connecting lines (117A, 117B, 117C) of the individual coolant pairs (114A, 114B, 114C) are arranged parallel to each other in a row along at least one part of the length of the exit section (112).

A welding system includes a power block, a cable, and an end assembly including a holder. The cable is attached between the power block and the holder and is detachable and reversible. Each end of the cable has the same polygonal recess, which match a common polygonal projection of the power block and the holder. The holder may include a coupler that permits rotatable movement of the cable relative to the holder. The coupler can be exchanged with a further coupler having the same polygonal profile and height but with a different rotatable movement. The cable is reversible such that the end attached to the power block can be attached to the holder and vice versa.

To provide systems and methods of additive structural build techniques.SOLUTION: Embodiments of systems and methods of additive manufacturing are disclosed. A metal deposition device (MDD) is configured to deposit a metal material during an additive manufacturing process. A controller is operatively coupled to the MDD and is configured to command the MDD to deposit the metal material on a base to form a contour of a part. The controller is configured to command the MDD to deposit the metal material on the base to form an infill pattern within a region outlined by the contour. The infill pattern has a wave shape with a certain wavelength. The controller is configured to command the metal deposition device to fuse the infill pattern to the metal contour at crossover points, where the infill pattern meets the contour, by applying energy at the crossover points and reducing a deposition rate of the metal material at the crossover points to prevent distortion of the contour.SELECTED DRAWING: Figure 3

Shielding gas nozzle for a welding torch. The invention relates to a welding torch (10), comprising: - an electrode (11) extending along a longitudinal axis (X) and intended to form an electric arc with a workpiece, - a nozzle (12) arranged around the electrode, preferably coaxially, and set back longitudinally from the electrode, the nozzle being configured to eject a shielding gas, referred to as the external gas, flowing out of the nozzle, attached along the external surface of the electrode to the free end of the electrode protruding from the nozzle. Figure for the abstract: Fig. 5

The invention relates to a ceramic ring for stud welding and a stud system.The ceramic ring comprises a glass fiber reinforced thermal shrinkage film located on the outer layer and an ardealite-based ceramic layer located on the inner layer, the glass fiber reinforced thermal shrinkage film wraps the outer wall of the ardealite-based ceramic layer, and a thermal pore-foaming agent is added into the ardealite-based ceramic layer; and the inner wall of the ardealite-based ceramic layer is provided with a heat insulation layer and forms a spiral air guide groove. The stud system comprises a ceramic ring and a stud, the stud comprises a stud body and a stud head located at one end of the stud body, a copper foil electric arc guiding layer is formed on the top face of the stud head, an annular micro air cavity is formed in the portion, on the lower portion of the stud head, of the stud body, the annular micro air cavity is filled with smelting flux, and the annular micro air cavity is provided with an opening. And a thermal decomposition sealing film covers the opening. A double-air-curtain dynamic sealing system is constructed through the ceramic rings and the studs, the oxygen concentration of a molten pool area is reduced, the stud welding quality is improved, the ceramic rings are automatically disintegrated into micron-sized powder during welding, cleaning and recycling are not needed, and the construction efficiency is improved.

Dual-flow shielding gas arc welding torch. The invention relates to a welding torch (10), comprising: - an electrode (11) extending along a longitudinal axis (X) and intended to form an electric arc with a workpiece, the electrode comprising an internal conduit (16) opening through a free end, the internal conduit being configured to circulate and then eject a shielding gas, called internal gas, through the free end, - a nozzle (12) arranged around the electrode, preferably coaxially, the nozzle being configured to eject a shielding gas, called external gas, from the nozzle to the free end of the internal conduit of the electrode, - flow control means for ejecting an internal gas flow (Fint) of composition and / or flow rate and / or pressure independent of that(s) of the external gas ejection flow (Fext). Figure for the abridged version: fig. 5

The invention discloses a device and a method for wire electric arc additive manufacturing of an aluminum alloy porous material, and belongs to the field of wire electric arc additive manufacturing. According to the method, the synergistic effect of multiple mechanisms of wire-electric arc melting, composite powder adding, ultrasonic vibration stirring, gas-solid mixed CO2 forced cooling and special atmosphere mixed shielding gas is adopted, the fundamental breakthrough of the WAAM technology from'impossible pore forming 'to'stable pore forming' is achieved for the first time, finally obtained pores are more uniform in size and more dispersed in spatial distribution, and the pore forming efficiency is improved. And the formation of a macrosegregation zone and local large holes is effectively avoided, and the consistency and reliability of the mechanical property of the porous component are greatly improved. According to the method, the technological process is high in integration level, complex post-treatment procedures are not needed, and integrated forming of the functional component composed of the compact shell and the internal porous structure can be achieved.