40results about "Welding electrode features" patented technology

The invention provides a positive and negative pressure pulse electric arc welding and additive manufacturing method which comprises the following steps: inducing electric arc plasma to generate a negative pressure electric arc with an anti-gravity adsorption effect through a current-magnetic field-hollow tungsten electrode-gas collaborative design, and forming a time sequence coupling process with a positive pressure electric arc. The core of the method is that a magnetic control positive pressure and negative pressure electric arc welding external field is cooperated with a molten pool reconstruction forming mechanism, that is, the dynamic and thermodynamic states of a molten pool are accurately balanced by dynamically switching the electric arc pressure direction and regulating and controlling the action proportion and alternating frequency of negative pressure and positive pressure electric arcs. A self-adaptive magnetic field threshold model based on current intensity and a gas mode is combined with variable polarity power supply parameters and gas flow rate cooperative control, and the problems of thin plate welding fusion penetration and thin-wall additive molten pool instability are effectively solved. According to the method, a welding wire, powder or laser composite manufacturing mode can be integrated, the forming precision and performance of a complex structure are remarkably improved, and an innovative technical support is provided for high-quality and high-efficiency welding and additive manufacturing.

The invention discloses an electric arc discharge device which comprises a base, a lead screw nut mechanism, a first electrode assembly and a second electrode assembly. The first electrode assembly and the second electrode assembly are arranged at intervals and slidably connected with the base. The driving end of the lead screw nut mechanism is connected with the second electrode assembly. A second electrode body is arranged at the tail end of the second electrode assembly; the first electrode assembly comprises a rotating platform, a lifting platform, a micro telescopic push rod and a first electrode body which are connected in sequence; the Y-direction distance between the first electrode body and the second electrode body is roughly adjusted through the lead screw nut mechanism, the angle and height of the second electrode body are adjusted through the rotating platform and the lifting platform correspondingly, and the Y-direction distance is finely adjusted through the micro telescopic push rod. The device has the beneficial effects that the efficiency, precision and reliability of the device are obviously superior to those of a single adjusting mode, more arc form requirements are met, and the problem that the two electrodes are not centered due to machining and device errors can be solved.

The invention provides an electrode convenient to replace and a welding device, and belongs to the technical field of welding devices. The electrode convenient to replace comprises an electrode tip and an electrode holder, a clamping piece is arranged on the electrode holder, and a first clamping groove is formed in the clamping piece; a clamping block is arranged on the electrode tip, and the clamping block is clamped with the first clamping groove. The electrode convenient to replace is novel in design, the electrode tip and the electrode holder can be quickly connected, so that the replacement time of the electrode tip is saved, and the welding efficiency is improved.

The composite material electric arc additive manufacturing device comprises a composite material manufacturing six-axis mechanical arm, a composite material manufacturing six-axis mechanical arm control cabinet, a wire feeder, a wire feeding pipe mounting frame, an adjustable rocker arm transverse reciprocating wire distribution mechanism, a welding gun, a deposition piece, a wire feeding pipe and a composite material electric arc additive manufacturing power source. The transverse reciprocating wire distributing mechanism with the adjustable rocker arm comprises a wire distributing pitching angle adjusting structure, a wire distributing swing adjusting structure, a wire distributing tensioning structure, a wire distributing clamping structure and reinforced fiber wires. The swing amplitude and the swing frequency of the fiber distribution swing adjusting structure are adjusted, so that on-demand or uniform arrangement of the reinforced fibers is achieved, and the material performance of the deposition piece is improved.

The invention relates to a component for an electrically operated arc torch, in particular a plasma burner or plasma cutting torch, characterised in that the component or at least a part or a region of the component consists of a material comprising aluminium oxide and at least one of the chemical elements silver and copper.

The invention relates to a component for an arc burner operating in an energized manner, in particular for a plasma burner or a plasma cutting burner, characterized in that the component or at least part or at least one region of the component is made of a material, the material comprises aluminum oxide and at least one of chemical elements silver and copper.

This invention provides a weldable, lightweight, long-life arc-initiating electrode and welding method, including an anode head, a cathode head, an anode column, and a cathode column. The anode head and cathode head are made of single or composite metal conductor materials resistant to arc erosion; the anode column and cathode column are also made of single or composite metal conductor materials. The current path is as follows: the arc igniter is connected to both ends of the track in the muzzle region of a high-speed electromagnetic propulsion device, powered by an external power source. Current flows through the track and armature path of the high-speed electromagnetic propulsion device. The armature, under electromagnetic force, accelerates and slides from the muzzle towards the muzzle. When the armature exits the muzzle, it disengages from the track. Simultaneously, the metal or plasma medium in the gap between the bypass electrodes of the arc igniter induces gap breakdown discharge, achieving arc initiation. This invention meets requirements for conductivity and high tensile strength.

Strip flash butt welding machine (1) for welding end faces (7, 15) of strip ends (3, 11) of at least one strip with a) first tensioning elements (5) for tensioning a first band end (3) and second tensioning elements (12) for tensioning a second band end (11), b) a first alignment element (4) for aligning the first strip end (3) and a second alignment element (10) for aligning the second strip end (11), c) wherein the second clamping elements (12) are movable relative to the first clamping elements (5) in the direction of a longitudinal axis (9) via a drive, d) the first clamping elements (5) and the second clamping elements (12) each comprise a strip flash butt welding machine electrode (6, 13) which is formed at least in two parts and comprises a base body (57) and a contact body (58), characterized in that e) the first alignment element (4) and the second alignment element (10) are coupled to one another via a coupling device which specifies a relative alignment of the first and second alignment elements (4, 10), f) the second clamping elements (12) are movable translationally in the direction of the longitudinal axis (9) relative to the two alignment elements (4, 10) by means of the drive and g) the coupling device is a mechanical coupling device (54) which firmly connects the first alignment element (4) and the second alignment element (10) during a conversion.

The utility model discloses a disassembly-free welding gun calibrator for a welding robot. Comprising a gun corrector base plate and a welding gun clamping mechanism arranged on the gun corrector base plate, a welding gun correcting mechanism is installed on the gun corrector base plate, and the welding gun correcting mechanism comprises a bottom supporting assembly, a rotary pressing assembly and side pressing assemblies symmetrically arranged on the two sides of the bottom supporting assembly; the bottom supporting assembly comprises a lower support and a lower execution element, the lower execution element is provided with a supporting plate, the side pressing assembly comprises a side support and a side pressing execution element, and the side pressing execution element is horizontally arranged; the rotary pressing assembly comprises a rotary execution element, a rotary support and an upper execution element, when the gun is calibrated, the upper execution element is located above the supporting plate, and the upper execution element, the two side pressure execution elements and the lower execution element are in a cross shape. According to the welding gun calibration device, the production recovery cost after the arc welding robot collides with the gun is greatly reduced, the gun calibration efficiency is improved, the dependence on professional technicians is reduced, the welding gun calibration precision is greatly improved, the structure is simple, and the cost is low.

The invention discloses a trolley walking device suitable for automatic submerged-arc welding of a special-shaped steel box girder. The trolley walking device solves the technical problem that in the prior art, when a non-linear welding seam of the special-shaped steel box girder is welded, time and labor are wasted due to manual welding. Comprising two clamping mechanisms installed at the front end and the rear end of a welding trolley respectively, and each clamping mechanism comprises angle steel installed at the front end or the rear end of the welding trolley and positioning screws detachably installed at the two ends of the angle steel and in sliding contact with the two sides of a top plate of the special-shaped steel box girder; corner posts are arranged at the bottoms of the positioning screws. The automatic welding device is simple in structure, scientific and reasonable in design, convenient to use, capable of effectively achieving automatic welding of the special-shaped steel box girder on the premise that safe welding is guaranteed, easy to assemble and disassemble and capable of guaranteeing efficiency and effectively reducing labor cost.

The invention discloses a welding electrode for high-current argon tungsten-arc welding and a preparation method of the welding electrode, and belongs to the technical field of welding materials. The welding electrode comprises a columnar base body and a discharging end face. The columnar base body is formed by welding a tungsten rod and a copper rod through electric arc welding; the discharge end face is located at the end of the tungsten rod, and 2-4 regularly-distributed convex points are arranged on the surface of the discharge end face and serve as arc discharge points. The preparation method comprises the steps of material pretreatment, positioning and clamping, nickel powder coating, welding parameter setting, copper-tungsten welding, welding joint cleaning, salient point structure manufacturing, copper electrode heat dissipation channel manufacturing and quality inspection. A copper-tungsten composite structure is adopted, a plurality of discharge protruding points are arranged at the end of the tungsten electrode, the single-point burn-out rate is remarkably reduced by dispersing electric arc heat loads, rapid metallurgical bonding of a copper bar and a tungsten bar is achieved through the electric arc welding technology, the burn-out resistance service life is greatly prolonged, the electric arc stability is greatly improved, and the welding rod is suitable for large-current welding, aluminum alloy beveling welding and the like.

The example methods and apparatus reduce and / or eliminate adverse effects of welding work pieces having dissimilar compositions. An example method includes depositing a first weld layer (106) on a first end of a first work piece (102). The first work piece has a first content of a metallic element and the first weld layer has a second content of the metallic element higher than the first content. The example method includes depositing a second weld layer (108) between the first weld layer and a second end of a second work piece (104) to couple the first work piece to the second work piece. The second weld layer has a third content of the metallic element higher than the second content, and the second work piece has a fourth content of the metallic element higher than the first content.

Component for an electrically operated arc torch, in particular a plasma torch or plasma cutting torch, characterized in that the component or at least part or a region of the component consists of a material comprising aluminum oxide and at least one of the chemical elements silver and copper.

According to the parallel seam welding electrode disclosed by the invention, a roller is fixed at the bottom of a vertical section, and a locking hole is formed in a horizontal section, so that the adaptive breakthrough of a lead upward packaging structure is realized. The right-angle design of the vertical section and the horizontal section enables the working position of the roller to deviate in the vertical direction relative to a traditional plane electrode, a shell lead protruding area can be accurately avoided, and effective contact between the roller and the welding face of a cover plate is ensured. Therefore, the core problem that a traditional parallel seam welding electrode cannot complete airtight packaging due to the interference of the height of an outer lead is solved. The integral rigidity of the electrode structure is enhanced through the integral forming process, the deformation risk is reduced under the working conditions of welding pressure and high-speed rotation, and the stability of a welding path is guaranteed; meanwhile, due to the modular interface design of the horizontal section locking hole and the equipment clamp, the electrode installation precision and maintainability are improved, and a reliable technology implementation path is provided for a complex packaging scene.

A boiler tube stud welding gun includes a welding gun mounting plate, a welding gun unit mounted on the welding gun mounting plate, and two adaptive side support legs located on either side of the welding gun unit and indirectly connected to the welding gun mounting plate. The adaptive side support legs include a mounting bar, a support block located below the mounting bar, a connecting column connected to the top of the support block and passing through the mounting bar, a sliding bearing located within the mounting bar and slidably connected to the connecting column, a spherical bearing located outside the sliding bearing, a snap-on stud connected to the top of the connecting column, and a spring sleeved outside the connecting column with its ends abutting the mounting bar and the support block, respectively. This ensures that the welding gun is in a normal position relative to the arc surface, ensures that the resistance on both sides of the welding gun is consistent, avoids structural arc deflection, and improves welding quality.

The utility model discloses a double-wire outlet nozzle structure, which relates to the technical field of wire outlet nozzle structures, and comprises a shell, a wire feeding groove is formed in the shell, a blanking cap is mounted on one side of the shell, a limiting groove is formed in the shell, a frame is mounted in the limiting groove, a sponge wiper is mounted on the inner side of the frame, and the sponge wiper is mounted on the outer side of the shell. The welding wire feeding device comprises a shell, a plug cover is arranged in the shell, two mounting grooves are formed in one side of the plug cover, two mounting plates are fixedly mounted on one side of the shell, and the mounting plates are matched with the mounting grooves. The welding wire feeding device has the beneficial effects that a sponge wiper is mounted in the shell, so that the surface of a welding wire can be wiped through the sponge wiper when the welding wire enters a wire feeding groove; according to the welding wire dust removal device, dust on the surface of a welding wire can be effectively removed, the follow-up welding effect of the welding wire dust removal device is improved, through cooperation of a blanking cap, a limiting groove and a frame, the frame can be conveniently detached from the shell, dust wiped down from the sponge wiper can be conveniently cleaned, and detaching and cleaning are convenient and fast.

The invention provides a welding type light-weight long-service-life arc striking electrode and a welding method. The welding type light-weight long-service-life arc striking electrode comprises an anode head, a cathode head, an anode column and a cathode column. The anode head and the cathode head are made of single or composite metal conductor materials resistant to arc ablation; and the anode column and the cathode column are made of single or composite metal conductor materials. According to a current path, the arc starter is connected to the two ends of a rail in a bore opening area of the high-speed electromagnetic propulsion device and powered by an external power source, current conducts the rail and an armature path of the high-speed electromagnetic propulsion device, and an armature slides in a bore in an accelerated mode from a bore tail to a bore opening under the action of electromagnetic force; meanwhile, the metal or plasma medium in the bypass electrode gap of the arc striking device induces the gap to disrupt and discharge, and the arc striking effect is achieved. The cable can meet the requirements of conductivity, high tensile strength and the like.

The utility model relates to the technical field of screw processing, and discloses an electrode group for keeping a welding screw in the middle, which comprises a middle pipe, a connecting upper pipe fixed with the middle pipe and a connecting lower pipe fixed with the middle pipe, and the connecting lower pipe is trumpet-shaped. The middle pipe is in a hollow shape, and the length of the middle pipe is 23 mm. And the degree of finish of the upper connecting pipe is 1.6 microns. The electrode group with the welding screw kept in the center can ensure that the lower electrode hole and the part hole are centrally processed, so that the situation that the screw is not located in the center of the part hole and a battery shell is difficult to install is avoided, and the processing efficiency of equipment can be effectively improved.

The invention provides a start-stop production process for argon arc welding of an ultra-long stainless steel pipe, and belongs to the technical field of welding methods of the ultra-long stainless steel pipe. According to the method, the polishing angle of the tungsten needle is changed from original 30 degrees to 18 degrees, the problem of base metal adhesion during arc striking is solved, the qualification rate during starting and stopping is improved, meanwhile, the loss of the tungsten electrode is reduced, and the starting and stopping frequency is prolonged from original 3 hours once to 6 hours once. According to the method, by setting specific welding parameters such as the starting climbing current and the climbing speed, adopting the slow rising current and setting the reversing distance, soft starting is achieved, the current is slowly increased from low to high during starting of the vehicle, metal of an arc starting point can be fully and stably melted, and therefore a smooth and defect-free welding starting point is obtained and perfectly fused with a follow-up welding bead.

The invention discloses an electrolytic arc combined machining tool with multi-gear continuously adjustable discharge energy. The electrolytic arc combined machining tool comprises a liquid inlet guide sleeve, a spring, a guide rod, an insulation sleeve, a graphite pipe, an electrode handle and an electrode tip. The lower end of the guide rod extends into the graphite pipe, and electrolyte flowing in a gap between the guide rod and the graphite pipe forms an annular resistor. The resistance value of the electrolyte resistor is changed by adjusting the length of the guide rod in the graphite pipe, so that the arc discharge peak current is controlled, and different machining requirements such as high-surface-quality or high-efficiency material removal are met. The electrolyte serves as a current-limiting resistor, multi-gear continuous adjustment of discharge peak current is achieved, an existing electrolyte circulating system is used for heat dissipation, a special cooling device does not need to be additionally arranged, switching of different machining requirements can be rapidly responded, and the equipment cost is effectively reduced while the technology applicability is improved.

Provide a processing method for a titanium anode plate used in an electrolytic copper foil raw foil machine. By optimizing the structure of the welding end of the conductive stud, adopting a structure with a copper rod and a silver sheet at the welding end, the electrical conductivity of the conductive stud itself is improved. And a welding fixture composed of an arc-shaped positioning fixture, a welding positioning fixture and a vertical plate provides an inert gas protection structure while reliably positioning the titanium anode plate and the conductive stud, solving the problem of poor electrical conductivity at the contact position between the conductive stud and the titanium anode plate due to welding defects. While ensuring the reliability of the welding position of the titanium anode plate and the conductive stud, the welding quality is improved, avoiding the defect that the inner arc surface of the welding bulges and deforms due to the titanium anode plate absorbing hydrogen and oxygen, and improving the quality of the titanium anode plate and the electrical conductivity reliability of the conductive stud.

The invention provides a rotating wheel type automatic tungsten needle replacing device which comprises an installation base, a rotating wheel type tungsten needle storage structure, a rotating wheel positioning structure, a rotating wheel stirring structure and a tungsten needle pushing structure are installed on the installation base, and the rotating wheel type tungsten needle storage structure comprises a storage box. The storage box is rotationally mounted on the mounting base, a plurality of storage holes for storing tungsten needles are formed in the storage box, and a plurality of positioning holes are annularly formed in the outer wall of the storage box; the rotating wheel positioning structure comprises a positioning telescopic driving part, and a positioning insertion rod is arranged at the telescopic end; the rotating wheel shifting structure is used for driving the storage box to rotate; the tungsten needle pushing structure comprises a pushing telescopic driving part and a guide push rod, the guide push rod is installed at the telescopic end of the pushing telescopic driving part, and the guide push rod penetrates through the installation base and the storage hole under the action of the pushing telescopic driving part. The device can achieve the functions of automatic conveying, replacing, positioning and the like of the tungsten electrode, manual operation is not needed, the overall structure is simple, operation is easy and convenient, and the occupied space is small.

A multielectrode system, comprising a plurality of electrodes arranged around a workpiece region, is provided, wherein each electrode is configured to generate a heated arc with at least one adjacent electrode, a circuit is configured to power and / or ground each electrode, and a microcontroller is configured to control each of the plurality of electrodes via the circuit. The microcontroller is configured to cause the plurality of electrodes to operate in a uniform heated field mode that provides a substantially uniform heated field around in the workpiece region and to cause at least some of the electrodes to operate in an individual arc control mode that provides an arc between two adjacent electrodes, but not between all electrodes in the plurality of electrodes. Methods of processing an optical fiber via a multielectrode system are further provided.

An arc additive manufacturing method for a nuclear power water reactor main pipe 316L-In718 functional gradient material relates to the field of additive manufacturing, and aims at solving the problems of poor interlayer bonding capacity of dissimilar metals, uneven component distribution, poor size precision and stress corrosion cracking and the like in the process of preparing materials in the prior art.The nuclear power water reactor main pipe 316L-In718 functional gradient material is prepared by using the coaxial wire feeding arc additive manufacturing method, wherein the welding wire of the coaxial wire feeding is 316L-In718 stranded welding wire.The method can realize the relatively continuous component gradient transition of the 316L-In718 functional gradient material of the large nuclear power water reactor main pipe complex structure, and the effect of improving the deposition efficiency, forming size precision, corrosion resistance and interlayer bonding capacity is achieved.

The invention relates to the field of repairing, in particular to a TIG tungsten electrode online grinding system which comprises a welding gun module, a taking and installing module, a grinding module and a control module. The welding gun module comprises a welding gun body, and a shielding gas connector, a cooling water inlet, a shielding gas nozzle and a cooling water outlet are formed in the outer portion of the welding gun body; a shielding gas channel, a shielding gas containing cavity, a shielding gas screen, a heat exchange cavity and an opening mechanism are arranged in the welding gun body, the grinding module comprises an omni-directional grinding device and a grinding motor, and the omni-directional grinding device comprises a planetary swing arm, a planetary gear shaft, an omni-directional grinding head, a gear and a grinding end cover. According to the automatic TIG welding machine, full-process online automation of automatic taking and unloading, grinding repairing, accurate reassembling and the like of a burnt tungsten electrode in automatic TIG welding is achieved, the automatic TIG welding machine is in an unattended full-automatic working mode, and the labor cost and the management cost of a factory can be greatly reduced; according to the product, the efficient, reliable and accurate tungsten electrode repairing state can be achieved, the production efficiency is greatly improved, and the stability of the welding quality is guaranteed.

The application provides a positive and negative pressure pulse arc welding and additive manufacturing method, through current-magnetic field-hollow tungsten electrode-gas collaborative design, negative pressure arc of anti-gravity adsorption effect induced by arc plasma is generated, and time sequence coupling process is formed with positive pressure arc. The core lies in the magnetic control positive and negative pressure arc welding external field collaborative molten pool reconfiguration forming mechanism, that is, through dynamically switching the direction of arc pressure, through regulating the action ratio and alternating frequency of negative pressure and positive pressure arc, the dynamic and thermodynamic state of the molten pool is accurately balanced. Based on the adaptive magnetic field threshold model of current intensity and gas mode, combined with the collaborative control of variable polarity power supply parameters and gas flow rate, the problems of thin plate welding melt-through and thin wall additive melt pool instability are effectively solved. The method can integrate the welding wire, powder or laser composite manufacturing mode, significantly improve the forming precision and performance of complex structure, and provide innovative technical support for high-quality and efficient welding and additive manufacturing.

A special-shaped modularized electrode welding device comprises an electrode cover (1) and an electrode holding rod (2), the electrode holding rod (2) is in an L shape, a cooling water channel a (201) is axially formed in the long edge of the electrode holding rod (2), a cooling water channel b (202) is axially formed in the short edge of the electrode holding rod (2), the cooling water channel b (202) is communicated with the cooling water channel a (201), and the cooling water channel a (201) is communicated with the electrode holding rod (2). One end of the cooling water channel b (202) is communicated with the outside, and the other end is a blind hole; an electrode mounting hole (203) is formed in the outer end of the short edge of the electrode holding rod (2), the electrode mounting hole (203) is close to the blind hole end of the cooling water channel b (202), and the electrode mounting hole (203) is matched with the electrode cover (1) and used for mounting the electrode cover (1).

The present invention provides a right-angle turn welding method, relating to the technical field of manufacturing box-shaped structures. The right-angle turn welding method includes: path planning, planning a pre-bend point on the surface to be welded of a first welding plate, planning a bend point on a second welding plate, and planning a top bend point between the first welding plate and the second welding plate; root layer welding, changing the welding gun's travel angle while maintaining its working angle unchanged during the process from the pre-bend point through the top bend point to the bend point, to complete the root layer welding between the first welding plate and the second welding plate; and filler layer welding, changing the welding gun's travel angle and working angle during the process from the pre-bend point through the top bend point to the bend point, to cover the filler layer on the root layer. The right-angle turn welding method increases full fusion, improving welding quality and appearance quality.

This invention provides a method for coaxial wire feeding welding and additive manufacturing using a hollow tungsten electrode with positive and negative voltage pulsed arc. The method includes: fixing a workpiece or additive manufacturing substrate on a platform; setting hollow tungsten electrode parameters; configuring a variable polarity or pulsed arc power supply; setting key process parameters; and starting the coaxial wire feeding system, the hollow tungsten electrode arc power supply, and the external magnetic field excitation equipment. Through these steps, a pulsed timing synergistic process is constructed, synergistically controlling the magnetic field, the gas flow direction and velocity within the hollow tungsten electrode, and the arc current to form an external field with alternating positive and negative voltage arcs. The suction force of the negative voltage arc pulse phase directionally guides the molten wire droplets to a stable, impact-free transition into the molten pool, while the positive voltage arc pulse phase releases the molten pool pressure and spreads the liquid metal. This synergistic control of the droplet-molten pool system solves the problem of molten pool instability in thin-plate welding and thin-walled additive manufacturing, ensuring high-quality formability of welded or additively manufactured components.

The application discloses a bus copper bar processing and welding equipment and relates to the technical field of bus copper bar welding.The bus copper bar processing and welding equipment comprises a copper bar pushing and fixing mechanism, a welding mechanism and a mounting frame.The mounting frame comprises a base, a bottom plate and an L-shaped welding frame.The copper bar pushing and fixing mechanism comprises two angle-adjusting pushing and fixing units, two arc-shaped notches are symmetrically arranged on the bottom plate along the diagonal lines of the bottom plate, and a rotary driving assembly is arranged at the bottom of the angle-adjusting pushing and fixing unit.The bottom plate is provided with a lower electrode structure, the lower surface of the crossbeam of the L-shaped welding frame is provided with a horizontal moving mechanism, the welding mechanism comprises a horizontal moving block, a resistance welding unit and an electric arc welding unit, and a CCD high-definition camera is arranged between the resistance welding unit and the electric arc welding unit.The two angle-adjusting pushing and fixing units can be used for angle adjustment and butt joint of two copper bars, resistance welding and electric arc welding can be switched, the existing welding equipment can only realize one welding mode, and the problems of inaccurate multi-angle butt joint welding and the like can be solved.