20results about "Welding electrode features" patented technology

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.

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.

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.

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.

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.

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.

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).

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.

The invention discloses an air-cooled portable inverter welding machine, and particularly relates to the technical field of electric welding machines, a clamping jaw I and a clamping jaw II are used for clamping and fixing the end part of an electrode and the periphery of a nozzle respectively, so that the electrode and the nozzle are stably positioned in the axial direction and the radial direction, and the clamped nozzle is driven to perform controlled rotation around the center of a hole II; the first clamping piece and the second clamping piece are cooperatively driven to be away from each other in the opposite directions, on the premise that the end of the electrode is kept not rotating through the first clamping jaw, the nozzle is driven by the second clamping jaw to generate thread unscrewing motion relative to the electrode till threaded connection between the electrode and the nozzle is completely separated, and automatic detaching and separating of the electrode and the nozzle are achieved. An operator does not need to use a wrench for hard screwing in a high-temperature and welding slag attachment environment, the labor intensity and the safety risks such as scalding and hand slipping are remarkably reduced, the corresponding electrode and the nozzle are driven to vertically face downwards and correspond to the cleaning unit and the scrap scraping unit, secondary manual adjustment is not needed, and the single-time maintenance period is shortened.

The invention discloses an inert gas automatic restraint type high-temperature alloy welding device, and relates to the technical field of high-temperature alloy welding, the inert gas automatic restraint type high-temperature alloy welding device comprises a welding nozzle component and a gas restraint component, the lower end of the welding nozzle component is sleeved with an inert gas output end component, and the bottom end of the inert gas output end component is sleeved with the gas restraint component. According to the inert gas automatic restraint type high-temperature alloy welding device, through ingenious combination of a plurality of components, automatic restraint and accurate output of inert gas in the high-temperature alloy welding process are achieved; the inert gas output end component is responsible for evenly and stably conveying inert gas to a welding area, and oxidation and nitridation of high-temperature alloy in the welding process are effectively prevented. The gas constraint component further improves the welding precision and efficiency by accurately controlling the flowing path and range of the inert gas. And the first combined bolt and the second fixed bolt are used for firmly connecting all the parts together, so that the stability and the reliability of the whole device are ensured.

The invention discloses a system for feeding back STT root welding penetration degree in real time. The system for feeding back the STT root welding penetration degree in real time is composed of a welding power source, a movement mechanism, a welding gun, a current sensor, a voltage sensor, a data acquisition card and an industrial personal computer. The welding gun is located at the clamping end of the movement mechanism, and the current sensor is installed on a welding loop to measure welding current according to the Hall effect principle and communicates with the industrial personal computer through the data acquisition card. The voltage sensors are installed at the two ends of a welding arc to measure loop voltage and communicate with the industrial personal computer through the data acquisition card, and welding electrical parameters of the welding power source are controlled by output signals of the industrial personal computer. The industrial personal computer collects current and voltage of a welding loop and controls electrical parameters of a welding power source through the predictive control software system and the data collection card. According to the system for feeding back the penetration degree of STT root welding in real time, the penetration degree is controlled by adjusting welding parameters in real time.

Disclosed are an apparatus for automatically replacing a tungsten electrode for tungsten inert gas welding of a robot welding system and a corresponding method, wherein a gas hood mounting / removing clamp (20) removes a gas hood from a welding gun (10) with a burnt-off tungsten electrode; a first tungsten electrode seat (41) is moved, along with a first carriage, to a position corresponding to a tungsten electrode mounting / removing clamp (60) or the welding gun (10); the tungsten electrode mounting / removing clamp (60) removes the burnt-off tungsten electrode on the welding gun (10) and rests it on the first tungsten electrode seat (41); a second tungsten electrode seat (42) is moved, along with a second carriage, to the position corresponding to the tungsten electrode mounting / removing clamp (60) or the welding gun (10); the tungsten electrode mounting / removing clamp (60) snaps a new tungsten electrode from the second tungsten electrode seat (42) and mounts it to the welding gun (10); the gas hood mounting / removing clamp (20) mounts the gas hood to the welding gun with the new tungsten electrode. The present disclosure enables automatic replacement of the tungsten electrode, which guarantees weld seam quality of robot welding, improves the automation level of the system, and enhances welding efficiency.

The invention discloses an inert gas automatic restraint type high-temperature alloy welding device, and relates to the technical field of high-temperature alloy welding, the inert gas automatic restraint type high-temperature alloy welding device comprises a welding nozzle component and a gas restraint component, the lower end of the welding nozzle component is sleeved with an inert gas output end component, and the bottom end of the inert gas output end component is sleeved with the gas restraint component. According to the inert gas automatic restraint type high-temperature alloy welding device, through ingenious combination of a plurality of components, automatic restraint and accurate output of inert gas in the high-temperature alloy welding process are achieved; the inert gas output end component is responsible for evenly and stably conveying inert gas to a welding area, and oxidation and nitridation of high-temperature alloy in the welding process are effectively prevented. The gas constraint component further improves the welding precision and efficiency by accurately controlling the flowing path and range of the inert gas. And the first combined bolt and the second fixed bolt are used for firmly connecting all the parts together, so that the stability and the reliability of the whole device are ensured.

The invention provides a tungsten copper electrode and a preparation method and application thereof, and particularly relates to the technical field of tungsten copper electrodes and preparation thereof. The preparation method of the tungsten copper electrode comprises the following steps: firstly, carrying out electro-coppering treatment on the surface of a tungsten-based cylinder with relatively low surface roughness to form a copper film, and then placing the tungsten-based cylinder subjected to the electro-coppering treatment in a copper pipe body; a first cover body and a second cover body are welded to the two opening ends of the copper pipe body respectively in a vacuum electron beam welding mode, a welding composite body is obtained, then hot isostatic pressing treatment and machining treatment are conducted on the welding composite body, and the tungsten copper electrode is obtained; according to the tungsten-copper electrode prepared through the preparation method, metallurgical bonding is achieved on the tungsten-copper interface, the heat conductivity of the tungsten-copper electrode and the bonding strength of the tungsten-copper interface are further improved, the heat conductivity can reach 260 W / (m.K) or above, the bonding strength of the tungsten-copper interface is larger than or equal to 200 MPa, and the use scene of the tungsten-copper electrode is widened.