78results about "Electrode accessories" patented technology

The utility model relates to the field of welding, and provides a welding device for welding in a narrow space. The welding device for welding in the narrow and small space comprises a nozzle, an inclined wire contact tube and a welding wire. The nozzle can vertically extend into the welding space; the inclined wire contact tube is partially inserted into the nozzle in an inclined mode, the extending end of the inclined wire contact tube can be located on one side of an opening in the tail end of the nozzle, a flow guide sleeve is detachably installed on the other side of the opening in the tail end, and the flow guide sleeve can partially shield the opening in the tail end of the nozzle. The welding wire is arranged in the inclined wire contact tube in a penetrating mode and can stretch out of an opening in the tail end of the nozzle so that an electric arc can be formed on one side of the nozzle. According to the welding device for welding in the narrow and small space, the nozzle can directly stretch into the welding space, the welding wire is conveyed to any welding position in the welding space through the inclined wire contact tube, and therefore the flow guide sleeve is additionally arranged on the nozzle to form a lateral gas supply structure, the whole molten pool is reasonably covered with protective gas, and the welding efficiency is improved. The problems of gas turbulence and molten pool protection are solved.

The invention provides a welding device for power plant boiler installation, and belongs to the technical field of boiler installation and welding. Comprising a welding installation part, a knocking auxiliary part is installed on the welding installation part, the knocking auxiliary part is used for preventing the welding installation part from being damaged, an attaching installation part is installed on the welding installation part, a gas facing protection part is installed on the attaching installation part, and the gas facing protection part is used for ensuring the gas protection quality. A swing limiting piece is installed on the attaching installation piece and used for improving operation standardability, and a gas protection prompting piece is installed on the welding installation piece. The gas facing protection part is arranged to be matched with the attaching installation part to be used for limiting the operation standardization of workers, and the carbon dioxide protection quality is guaranteed; the problems that an existing welding device for installing the boiler of the power plant is inconvenient to automatically control and limit gas-facing welding of workers, and welding wires for carbon dioxide protection welding are also prone to being blocked by splashing objects are solved.

The application discloses a kind of automatic welding production line of round tube and bush, it is related to welding production line technical field, including round tube conveying line, bore assembly being arranged at the end of first conveying branch line and second conveying branch line, chip suction assembly being arranged at the other end of second conveying branch line, and welding assembly being arranged at the both ends of third conveying branch line, it is laterally transferred round tube between adjacent conveying branch line;The technical advantage of the application is: by setting round tube conveying line and round tube transfer line vertically and horizontally, first air cylinder is arranged at the both ends of transfer frame, barb is arranged at the end of transfer frame upward, efficient transfer is realized in the way of height difference between bore assembly, chip suction assembly and welding assembly;By setting pneumatic chuck, rotary drive part and welding locking piece, the circumferential rotation control of round tube is realized, by setting bushing box and bushing positioning structure, automatic taking of bushing is realized, and then full-automatic welding of round tube and bushing is realized, and welding efficiency is improved.

The invention relates to a wear part for an arc torch, plasma torch or plasma cutting torch, characterised in that the wear part or at least one part or a region of the wear part consists of an alloy formed from silver and zirconium, silver and hafnium, or silver and zirconium and hafnium.

The utility model relates to the technical field of large roller surfacing, in particular to a high-temperature-resistant submerged-arc welding gun device for large roller surfacing repair, which comprises a welding flux blanking hose, a welding flux blanking steel pipe, a wire feeding system, a conducting rod, a heat insulation mechanism, a heat preservation box, a blanking positioning mechanism, a three-way diverter, a contact tube and a contact tube protection sleeve, the heat insulation mechanism comprises a steel plate shell and heat insulation fire-resistant cotton, the steel plate shell is horizontally arranged between the heat preservation box cover and the wire feeding system, the heat insulation fire-resistant cotton is arranged on the side, facing the wire feeding system, of the steel plate shell, and the welding flux discharging positioning mechanism is arranged on the outer circumference of a conducting rod in the heat preservation box. The surfacing welding device has the advantages that the surfacing welding device can go deep into a high-temperature heat preservation furnace for surfacing welding, and the stability of welding bead forming in the surfacing welding process is improved.

The utility model discloses a cooling nozzle and a welding gun. The cooling nozzle comprises a connecting seat, a nozzle pipe body and a nozzle head, the connecting base is fixedly installed at the end of the welding gun neck, a water receiving pipe protrudes out of the front end of the connecting base and communicates with a water path of the welding gun neck, and a first water inlet hole and a first water outlet hole are formed in the water receiving pipe. The nozzle pipe body is connected to the connecting base in an inserted mode and comprises an inner pipe and an outer pipe, a water channel is formed between the inner pipe and the outer pipe, the water channel is communicated with the first water inlet hole and the first water outlet hole, and heat exchange cooling of the cooling nozzle is achieved. The nozzle head is detachably installed at the front end of the nozzle pipe body so that the nozzle head can be replaced conveniently.

To provide a contact tip which is hardly worn even when used for aluminum welding and to which spatters are hardly stuck.SOLUTION: The split type contact tip is formed by screwing a tip 20 made of nickel silicon copper to the tip of an adapter 10 made of copper alloy. It is preferable that the copper alloy constituting the adapter 10 is chromium copper or zirconium chromium copper, and the nickel silicon copper constituting the distal end tip 20 has a composition of nickel: 1.0 to 5.0% (mass%, the same applies hereinafter), silicon: 0.4 to 2.0%, and the balance: copper and inevitable impurities.SELECTED DRAWING: Figure 1

The utility model relates to an automatic argon arc welding torch of small drift inner wall surfacing cooling circulation system, including welding torch body, ceramic mouth, tungsten electrode and cooling circulation mechanism, the bottom of welding torch body is equipped with ceramic mouth, the bottom of ceramic mouth is equipped with tungsten electrode, and is equipped with the cooling circulation mechanism for welding torch cooling in welding body, sends the cooling liquid into the liquid inlet pipe through the external drive pump, the cooling liquid flows into the spiral liquid pipe through the liquid inlet pipe, the heat of welding torch is passed through red copper heat transfer cylinder, and the heat is quickly conducted to the spiral liquid pipe, and the low temperature cooling liquid is pumped into the spiral liquid pipe from the liquid inlet pipe, absorbs the heat when the cooling liquid flows through the surface of the welding torch part, the high temperature cooling liquid flows out from the liquid outlet pipe, and the recycling use after the cooling through the external radiator, thereby taking away the heat of welding torch body, can long -time welding work, the cooling circulation mechanism is located in the welding torch body, and the unique gun body structure design can be flexible and deep into the narrow space.

A nozzle assembly for a welding torch is disclosed. The nozzle assembly comprises a nozzle, a contact tip, and a gas diffuser assembly. The gas diffuser assembly comprises a gas diffuser, coupled to an insulator. The gas diffuser is also coupled to a gooseneck and the contact tip. The nozzle is coupled to the gas diffuser assembly, such that the contact tip is retained within the nozzle. The nozzle and gas diffuser assembly further include complementary engagement features to couple the nozzle to the gas diffuser assembly. The nozzle also includes a spatter deflector configured to deflect or block spatter from obstructing gas holes of the gas diffuser assembly.

To efficiently perform sound welding by suppressing weld defects while suppressing a welding amount and preventing the occurrence of high temperature cracks in flat position welding.SOLUTION: In a narrow groove 50 of horizontal welding, a lower groove angle θ on a lower plate 5A side is set to 35 ° to 45 ° upward from the horizontal, and an upper groove angle α is set to be larger than the lower groove angle θ in a range of 2 ° to 5 °. In the inclined narrow groove welding method, a root gap RG of a narrow groove 50 is set in a range of 9 mm-12 mm, a backing metal 6 is provided which is attached to a lower plate 5A and an upper plate 5B and positions a groove surface lower end part 5A of the upper plate 5B and sets a groove angle and the root gap RG, a contact tip having a wire hole for feeding a weld wire into the narrow groove 50 is inserted, and the lower plate 5A and the upper plate 5B are welded without rotating the contact tip around a nozzle shaft in one pass in the narrow groove 50.SELECTED DRAWING: Figure 3

The utility model discloses a novel robot welding wire shearing device which comprises a first installation support and a second installation support, an execution device is arranged on the first installation support, and a telescopic rod of the execution device is connected with one end of a shearing device. A movable guide frame is arranged on the second mounting bracket, and the other end of the shearing device is movably connected with the movable guide frame; wherein the first mounting bracket is used for mounting the execution device on a welding gun; the second mounting bracket is used for mounting the movable guide frame on a welding gun; the execution device is used for stretching out or retracting the telescopic rod; and the extending shearing device is used for shearing the welding wire. The novel and small wire shearing device is adopted, the idle running time of the robot is utilized, extra track programming does not need to be added, the arcing rate of the robot cannot be reduced, and the production takt is guaranteed.

According to the contact tip for welding, the whole contact tip main body is made of a copper alloy with components including, in mass%, 1.0-5.0% of Ni, 0.4-2.0% of Si, and the balance Cu and unavoidable impurities. The manufacturing cost can be restrained, and the service life can be prolonged to 6-8 times of that of the prior art. In addition, it is preferable that the total amount of unavoidable impurities is 0.3% or less. In addition, it is particularly preferable that Ni: 2.0-4.0%, and Si: 0.8-1.5%.

In certain embodiments, a welding contact tip includes a first axial end portion having a welding wire outlet of an internal bore of the welding contact tip. The welding contact tip also includes a threaded middle portion adjacent the first axial end portion. The threaded middle portion includes external threads configured to mate with internal threads of a gas diffuser of a welding torch. The first axial end portion includes a tapered outer surface adjacent the threaded middle portion. The welding contact tip further includes a second axial end portion adjacent the threaded middle portion. In other embodiments, a welding torch liner assembly includes a liner stop configured to be attached to a first axial end of a welding torch liner. The welding torch liner assembly also includes a liner receiver configured to secure a second axial end of the welding torch liner. The second axial end of the welding torch liner is opposite the first axial end of the welding torch liner.

A tool includes a handle having a proximal end and a distal end, wherein the handle includes a first cylindrical cavity extending into the handle from an opening in the distal end and having a first cylindrical wall. The tool further includes a radial bearing having an inner race, an outer race, and rolling elements, wherein the outer race is secured to the first cylindrical wall of the first cylindrical cavity. Still further, the tool includes a central shaft having proximal and distal sections, wherein the proximal section is secured to the inner race, and wherein the distal section extends from the first cylindrical cavity and includes external screw threads. The tool additional includes a chuck threadably coupled to the external screw threads, wherein the chuck includes self-centering jaws for selectively gripping a tungsten electrode along an axis of rotation established by the radial bearing.

To provide a welding contact tip that is less prone to welding wire clogging, less prone to welding current variation, and has a significantly extended service life. [Solution] This welding contact tip consists of a copper alloy adapter 10 having a first central hole 11, to which a molybdenum alloy housing 20 having a second central hole 21 with a smaller diameter than the first central hole is screw-connected. The adapter 10 and housing 20 are crimped and fixed together by plastically deforming the screw threads by screwing them together with a large torque. The length of the second central hole 21 is set to 1 / 3 or less of the length of the first central hole 11, and the structure is designed to concentrate the welding current on the inner surface of the second central hole 21.

The adjustable carbon dioxide protection welding contact tube comprises a contact tube body, a threaded column is fixedly connected to the outer portion of the contact tube body, through holes are formed in the threaded column and the contact tube body in a penetrating mode, a first penetrating opening is formed in one end of the contact tube body, and a second penetrating opening is formed in the other end of the contact tube body. One end of the contact tube body is divided into two sheet-shaped structures, in the embodiment, as long as abrasion exists, pliers are taken, the two sides of the contact tube body are clamped to be close to each other and bent oppositely, and a welding wire is clamped again, after clamping is adjusted, the contact tube can be repeatedly used, and various types of manual welding or robot welding can be achieved. The contact tube can be applied to welding wires of various types and thicknesses, the tail end is in tight contact, point arc stability can be guaranteed, contact points are not changed, the contact tube body can be continuously used, and waste of resources is avoided.

This invention discloses a conductive tip processing device and method. It precisely processes used conductive tips that have reached the end of their service life, causing them to deform and changing the original straight aperture to a curved aperture. This increases the contact area and friction between the welding wire and the inner wall of the conductive tip, restricts the oscillation amplitude of the welding wire passing through, restores the conductive tip's conductivity stability and basic function of limiting and constraining the welding wire end, thus meeting the requirements of the welding process. The purpose of this invention is to enable the reuse of used conductive tips, effectively extend their service life, improve the utilization rate of precious non-ferrous metals, and reduce the waste of scarce resources.

The utility model belongs to the field of additive manufacturing, and relates to a ball type contact tube which comprises a contact tube body and a ball. A guide wire through hole is formed in the contact tube main body along the axial direction of the contact tube main body; a wire is arranged in the wire guide through hole and moves in the axial direction of the wire guide through hole; and the ball is arranged in the wire guide through hole and is tangent to the wire. The ball type contact tube provided by the utility model has the advantages that the abrasion of wires to the contact tube can be reduced, and the service life of the contact tube can be prolonged.

The invention belongs to the technical field of welding equipment, and particularly discloses an automatic argon arc welding device and method for mechanical part production. The automatic argon arc welding device comprises a workbench, a fixing base is fixedly connected to the top of the workbench, a mounting base is arranged at the top of the workbench, and a driving mechanism is arranged on one side of the workbench; the driving mechanism is used for driving the position of the mounting seat, and three-jaw chucks are arranged on the opposite sides of the mounting seat and the fixed seat; by arranging the welding slag protection and cleaning system composed of the flow guide cover, the electromagnet, the scraping rod and the like, welding splashes are effectively adsorbed and blocked, blockage and pollution of the welding slag to the nozzle are greatly reduced, the stability of protection airflow is guaranteed, the purity of a welding pool is guaranteed, and therefore high-quality welding seams without oxidation and air holes are obtained; and meanwhile, the frequency of shutdown for cleaning the nozzle is reduced, the continuity of the welding process is ensured, and the production efficiency is remarkably improved.

To efficiently execute exchange and polishing of an electrode.SOLUTION: An electrode exchange device 1000 includes a moving device 10 capable of moving an electrode 5 to a plurality of positions, a polishing device 2 for polishing the electrode, and a control device 100. The control device 100 moves the used electrode 5 removed from a weld torch 4 at a position P1 to a position P2 using the moving device 10, polishes the used electrode 5 at the second position using the polishing device 2, moves the polished electrode 5 polished by the polishing device 2 from the position P2 to a position P3 using the moving device 10, and inserts the polished electrode 5 into the weld torch 4 at the position P3.SELECTED DRAWING: Figure 4

The invention discloses a broadband adjustable rocking electric arc welding method, a welding torch and application. The welding torch comprises a large-bending conducting rod mechanism with a bending angle and a single-side nozzle integrally matched with the large-bending conducting rod mechanism for use. A bent nozzle or a straight-barrel-shaped nozzle is fixed to the bent side of the large-bending conducting rod mechanism, a single gas circuit or double gas circuits are arranged in the nozzle, inner side gas flow of a lower end opening of the nozzle can cool the lower portion of the large-bending conducting rod mechanism, and outer side gas flow protects a welding high-temperature area. The flow distribution of the welding shielding gas on the front side and the rear side of an electric arc can be adjusted by adjusting the nozzle inner bending angle or the overall front inclination angle of the nozzle arranged on the single side, so that the welding gas shielding effect on a high-temperature welding seam is improved; by adjusting the backward included angle between the electrode and the center line of the welding seam, the electric arc pointing direction and the molten drop transition direction can be adjusted so as to improve the welding process stability when the electric arc swings at a fast frequency, the electric arc swinging frequency is adjusted within the wide range of 1.0-35 Hz, and narrow-gap argon arc welding or non-gap gas shielded welding of the broadband adjustable swinging electric arc is achieved.

Systems, methods, and apparatus to preheat weld wire are disclosed. An example contact tip includes: an inner bore configured to conduct current to a consumable welding electrode; screw threads on an exterior of the contact tip; and a head opposite the screw threads on an exterior of the contact tip to enable threading and dethreading of the contact tip.

The invention discloses a submerged-arc welding gun suitable for narrow-gap groove welding, and relates to the field of welding equipment, the submerged-arc welding gun comprises a gun head swing mechanism, a gun body and a gun head, the rotary output end of the gun head swing mechanism is connected with a gun head swing rod, and the bottom end of the gun head swing rod is provided with a shifting block; the gun body is located at the bottom of the gun head swing mechanism and is of a plate-shaped structure, and a gun head swing shaft rod is arranged at the bottom of the gun body. The gun head is of a plate-shaped structure, and the thickness of the gun head is smaller than that of the gun body. The gun head is rotationally installed on the gun head swing shaft rod, the top of the gun head is connected to the bottom of the gun body through a conductive flexible connector, and the side portion of the gun head is connected with the shifting block so that the shifting block can shift the gun head to twist. According to the welding gun, the gun body and the gun head which are of a plate-shaped structure are arranged, so that the welding gun can conduct narrow-gap groove welding operation, in addition, the gun head and the gun body are connected through the conductive flexible connector, the gun head swing mechanism is combined, the gun head can swing, and the welding position is adjusted.

The invention belongs to the technical field of welding processes, and particularly relates to a hot wire pulse welding method and a welding gun. Compared with the prior art, according to the embodiment of the invention, the inertia of purely adjusting electric parameters is jumped out, preheating energy independent of a welding loop is introduced to serve as a newly-added control dimension, melting energy and arc maintaining energy are decoupled, the matching relation between pulse energy and time is reversely reconstructed through triple cooperation of hot wire peak value reduction, high-frequency complementary spacing and low-base-value heat control input, and therefore the welding precision is improved. Therefore, on the premise that the deposition rate is not sacrificed, low heat input and high-frequency stable transition are achieved at the same time.

The complex component intelligent welding trajectory and posture optimization method and system disclosed by the application belong to the technical field of welding process control. By acquiring the weld geometry characteristics and obstacle information of a to-be-welded component, a spatial data set is established; the nominal and actual weld center lines are registered, and the nominal trajectory points are discretized; a tangent, a secondary normal and a normal local coordinate base are constructed at each nominal trajectory point, the deviation is decomposed into the three directions, and a deviation vector field is obtained; the nominal trajectory point positions are corrected and smoothed according to the deviation vector field, and a continuous corrected trajectory is obtained; candidate welding gun postures are generated at each corrected trajectory point, and the optimal welding gun posture sequence is solved through constraint judgment and cost evaluation; and the continuous corrected trajectory and the optimal welding gun posture sequence are converted into robot instructions. The application reduces the wire stick-out fluctuation, improves the arc centering accuracy and stable welding heat input, effectively reduces welding defects such as incomplete fusion, undercutting and spatter, and thus improves the weld forming consistency.

The utility model belongs to the field of additive manufacturing, and relates to a contact tube which comprises a contact tube body, a wire guide hole and a cooling flow channel. The wire guide hole is arranged along the axial direction of the contact tube main body; the cooling runner is arranged in the contact tube main body and is positioned at the side part of the wire guide hole; and the contact tube is provided with a cooling liquid outlet and a cooling liquid inlet which are respectively communicated with the cooling flow channel. The utility model provides the contact tube which can effectively prevent the material of the contact tube from being softened, enhance the wear resistance of the contact tube and prolong the service life of the contact tube.

A welding contact tip in which a distal end of a copper alloy adapter 10 having a first center hole 11 is screwed to a molybdenum alloy housing 20 having a second center hole 21 having a diameter smaller than a diameter of the first center hole. The adapter 10 and the housing 20 are screwed with each other with a large torque to plastically deform threads, and the adapter and the housing are crimped and fixed. The length of the second center hole 21 is set to 1 / 3 or less of the length of the first center hole 11, and a welding current intensively flows through the welding wire at the inner face of the second center hole 21. The welding wire is less likely to be clogged, the welding current is less likely to vary, and the service life can be significantly extended.

The invention discloses an automatic welding station and a welding method for an angle seat. The automatic welding station comprises at least one base plate, and the base plate is provided with a welding station used for fixing an angle seat workpiece; the at least one welding robot is used for executing welding operation; each welding station is provided with a clamping device for positioning and clamping a workpiece; the control system comprises a robot control system and a PLC control system which are in communication connection and respectively control the track action of the welding robot and the logic action of each execution component of the work station. The welding method comprises the steps that an angle seat workpiece is fed to a welding station and initially positioned through a reference stop block, the clamping device is controlled to clamp the side direction and the end of the workpiece, the operation panel selects the workpiece model to call corresponding welding process parameters, the angle of a base plate is adjusted, and then the welding robot is controlled to conduct welding according to a preset track and parameters. And after welding is completed, the workpiece is loosened, the mechanism is reset, and discharging is conducted. A robot, a fixing tool and a digital system are integrated, and high-quality and high-efficiency automatic welding production of multi-specification angle seat workpieces is achieved.

The utility model relates to the technical field of current contact nozzles, in particular to an adjustable welding gun current contact nozzle structure which comprises a current contact nozzle body, a wire passing hole and two clamping plates arranged on the two sides of the interior of the wire passing hole respectively. First guide sliding rods are fixed to the opposite sides of the two clamping plates in the radial direction of the wire passing hole, the first guide sliding rods penetrate through the contact tube body and extend into the outer shell, and first sliding blocks are fixed to the ends, in the outer shell, of the first guide sliding rods; a second sliding block is movably arranged in the outer shell through a linear driving piece, the linear driving piece is used for pushing the second sliding block to move back and forth between the two first sliding blocks in the radial direction of the outer shell, and the two first sliding blocks are movably connected with the second sliding block through connecting rods; the distance between the clamping plate and the center of the wire passing hole can be synchronously adjusted according to the size of the welding wire, the welding wire is clamped in the middle, and different use requirements are met.