528results about "Electrode accessories" patented technology

The present invention relates to arc welding torch and a method of extracting fume gas from a welding site. The torch comprises a metal electrode and at least one shield gas port adapted to direct a shield gas curtain around the metal electrode and a welding site. At least one shroud gas port is spaced radially outward from the shield gas port and adapted to impart to an exiting shroud gas a radially outward component of velocity. Fume gas is preferably extracted from a position radially intermediate the shield gas curtain and the shroud gas curtain.

In an electric arc welder for creating an arc welding process between a consumable electrode advancing through a contact tip and a workpiece, the welder including a power supply to create an arc current and arc voltage and having a first lead connected to the contact tip and a second lead connected to the workpiece, the improvement comprising dividing the contact tip into an upper tip section and a lower tip section with an insulator electrically isolating the sections, a first switch selectively shiftable to a conductive state connecting one of the power supply leads to said upper tip section, a second switch selectively shiftable to a conductive state connecting the one lead to the lower tip section and a switch operating network creating a first switch signal to shift the first switch to its conductive state and/or a second switch signal to shift the second switch to its conductive state to control the effective CTWD of the arc welding process.

A welding contact tip and diffuser assembly for use in a welding apparatus. The assembly includes an electrically conductive contact tip having a tapered exterior surface, a diffuser having a cavity with a tapered interior surface, and a releasable connection for holding the contact tip in the diffuser. The connection includes at least one detent element in either the diffuser or the contact tip, at least one recess forming a ramp in the other of the diffuser or contact tip, and at least one spring. The spring biases the detent element into the recess and against the ramp to generate an axial force against the ramp. The axial force tends to urge the tapered surfaces of the contact tip and diffuser into contact with one another.

A welding gun adapted to secure a contact tip within the welding gun without threading the contact tip and without the use of tools. The contact tip may be adapted to abut a surface of a first member disposed within the welding gun. The surface may be a surface of a gas diffuser. The surface may be adapted to abut the contact tip. The contact tip also may be adapted for abutment with a second member to urge the contact tip toward the first member. The second member may be a portion of a nozzle adapted to abut the contact tip to urge the contact tip toward the surface of the first member. A method of assembling a welding gun also is provided. The method may comprise disposing a contact tip between a first and a second member and capturing the contact tip between the first and second members.

A welding gun having a removable end portion. The end portion may be adapted to direct gas from the welding gun. The end portion may be conical-shaped. The end portion may be removed without tools. The end portion also may be adapted to be secured to and/or removed from the welding gun in a linear movement. A method of assembling a welding gun. The method may comprise urging a nozzle end member and a nozzle body into engagement to secure the nozzle end member to the nozzle body.

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 welding torch includes a tip connection body, a holding member, a fixing member, and a welding tip. The holding member is displaceable in the axial direction of the tip connection. The fixing member fixes the welding tip in place in the axial direction of the welding tip when the fixing member is in contact with a smaller diameter portion, and the fixing member releases the welding tip when the fixing member is in contact with a larger diameter portion.

The invention described herein pertains generally to split goosenecks (synonymously swan necks) having a fixed or non-fixed radius for use with welding guns.

A welding tip replacement apparatus is used for a welding torch that includes a tubular tip connection body, a tubular retaining member fitted over the tip connection body, and a tubular welding tip fitted within the tip connection body, the welding torch being configured such that displacing the retaining member toward the proximal end of the tip connection body along the axis of the tip connection body causes the welding tip axially fastened to the tip connection body to be released. The apparatus includes a first grasping mechanism grasping the retaining member, a second grasping mechanism grasping the welding tip protruding from the retaining member in a direction away from the distal end of the tip connection body, a first driving mechanism driving the first grasping mechanism axially, and a second driving mechanism driving the second grasping mechanism axially.

The invention provides a rotating arc welding torch with narrow clearance, comprising a hollow axle high speed servo motor 1, an eccentric sleeve 2, a center-up-adjusted bearing 3, a sealed bearing4, a center-down-adjusted bearing 5, a conducting pole 6, a welding torch shell 8 and a conducting nozzle 14, etc. The invention is characterized in that the hollow axle high speed servo motor 1 and the eccentric sleeve2 which are connected together drive the conducting pole 6 and the conducting nozzle 14 to make an eccentric revolution around the axes of the welding torch; the revolution original point is close to the middle part of the conducting pole 6 which runs through the fixed center-down-adjusted bearing 5 and is fixed with the center-down-adjusted bearing 5; the revolving range is regulated jointly by the eccentric magnitude of the eccentric sleeve 2 and the position where the center-down-adjusted bearing 5 of the revolution original point exists on the conducting pole 6. The welding wire produces the rotating arc along with the revolution of the conducting pole 6 and the conducting nozzle 14. A soft wire cable 12 is connected with the loading welding power supply of the soft wire cable. The wearing components of the invention are all standard parts; thereby the implementation cost is low and the welding torch has long service life; using the soft conducting wire connection is convenient and reliable; when in operation, the welding torch can not be affected by the external disturbances.

According to the present invention, a non-consumable electrode type semi-automatic welding system which can conduct welding with high weld deposit and high speed is provided. A welding torch (1), in which a non-consumable electrode (1) generating an arc between the non-consumable electrode and an object to be welded and a torch nozzle (5) ejecting a shield gas toward a welding pool of the object to be welded generated by the arc are provided; a wire feeder (502) which delivers a welding wire (10) toward the welding pool of the object to be welded from a tip end of a feeding head, the feeding head being mounted on the welding torch (1) via an attaching jig (14); and a welding power source (501) which supplies electric power and shield gas to the welding torch (1); are provided and one or more among the welding torch (1), the wire feeder (502), and the welding power source (501) are constituted by applying at least one part of a welding torch, wire feeder, and welding power source provided in a consumable electrode type semi-automatic welding system.

A technology for preparing the high-performance electrode cap for welding the coated steel palte of car includes such steps as proportional mixing cathode copper, Cr powder Zr powder and Mg powder, smelting in vacuum furnace, pouring in circular mould, cleaning the surface of ingot, hot squeeznig to become rod, solutionizing, cold drawing, blanking, cold die pressing, vacuum annealing, trimming and polishing.

A method and system for retracting welding wire is provided. One welding torch includes a handle configured to receive welding wire from a wire source and to direct the welding wire to a torch tip. The welding torch also includes a first switch coupled to the handle and configured to cause the welding wire to extend out of the torch tip to expose more wire when the first switch is actuated. The welding torch includes a second switch coupled to the handle and configured to cause the welding wire to retract into the torch tip to expose less wire when the second switch is actuated.

A welding apparatus is disclosed. The welding apparatus includes a torch body comprising at least one core, a plurality of contact tips extending in a direction from the at least one core, and a plurality of gas supply tubes disposed proximate the plurality of contact tips, the plurality of gas supply tubes extending in a substantially similar direction as the plurality of contact tips.

A contact tip for a welding torch in accordance with the present invention includes an elongated, generally cylindrical body having a front contact end and an opposite rear retaining end. A central aperture is defined by an inner wall of the body. The aperture extends through the body from an opening at the rear retaining end to an opening at the front contact end. The aperture has a front portion and a wider diameter portion adjacent the front portion. The front portion generally has a length that is shorter than a length of the wider diameter portion. A consumable electrode wire fed through the aperture contacts the inner wall in the front portion but does not contact the inner wall in the wider diameter portion.

An example welding-type system includes: a welding-type power source configured to provide welding-type current to a welding-type circuit, the welding-type circuit comprising a welding-type electrode and a first contact tip of a welding torch; an electrode preheating circuit configured to provide preheating current through a first portion of the welding-type electrode via a second contact tip of the welding torch; a switching circuit configured to control a current flow between the welding-type power source and the first contact tip; and a preheat control circuit configured to control the switching circuit to: selectively direct current from the welding-type power source to the second contact tip; and selectively divert current from the electrode preheating circuit to the first contact tip

The invention discloses a sealed pipe welding gun which comprises a welding gun body and clamping devices. The welding gun body is provided with a welding chamber penetrating the two opposite sides of the welding gun body, a passageway which is communicated with the welding chamber and through which a pipe to be welded enters and exits out of the welding chamber and a gas channel through which protective gas flows into the welding chamber. At least one welding electrode capable of rotating around a rotary shaft is arranged in the welding chamber. The welding gun body is further provided with a drive device for driving the welding electrodes to rotate. The clamping devices comprise upper clamps and lower clamps. Upper semicircular grooves are formed in the end faces of the upper clamps. Lower semicircular grooves corresponding to the upper semicircular grooves are formed in the end faces of the lower clamps. When the upper clamps and the lower clamps are closed, a clamping space used for clamping the pipe to be welded is formed by the upper semicircular grooves and the lower semicircular grooves in a matched manner and the upper clamps are combined with the pipe to be welded, the lower clamps and the welding gun body to seal the welding chamber. Therefore, the stability of welding arcs and the welding effect are greatly improved.

The invention relates to a narrow-gap welding nose with a tilt angle device, which carries out narrow-gap welding. The narrow-gap welding nose with the tilt angle device comprises an electric conduction nozzle of a welding gun, a connecting plate for installing the welding gun, and a tilt angle device, wherein the lower end of the electric conduction nozzle is provided with a bent part; and the bent part is coaxially and fixedly arranged on the lower end of a wire guide rod by a corner sleeve. The narrow-gap welding nose with the tilt angle device is characterized in that the tilt angle device comprises a tilt angle mechanism for driving the electric conduction nozzle to carry out deflection, and a side wall tracking mechanism for keeping the distance between the electric conduction nozzle and the side wall, wherein the tilt angle mechanism for driving the electric conduction nozzle to carry out deflection is connected with the electric conduction nozzle; the side wall tracking mechanism comprises an oscillating rod, an angle sensor and a controller, wherein the oscillating rod is used for supporting the side wall of a groove; the angle sensor is connected with the oscillating rod and is connected with the controller; the controller controls the tilt angle mechanism; and the oscillating rod and the side wall of the groove are always in elastic contact. The lateral displacement moving amount of a workpiece is measured by a high-precision sensing assembly, and the distance between the electric conduction nozzle and the workpiece is controlled to be within a tracking precision of +/-0.5mm by the lateral regulation of the control system so as to guarantee the stable and even penetration of the side wall.

The invention relates to a narrow gap double-wire welding gun which comprises two welding gun assemblies. An insulation plate is arranged between the two welding gun assemblies, the two welding gun assemblies are fixed and assembled through the insulation plate, the two welding gun assemblies comprise gun bodies, insulation covers are arranged at the outer ends of the gun bodies, electric connectors, air inlet pipes and water connectors are arranged at the upper ends of the gun bodies in penetrating mode, the lower ends of the gun bodies are connected with contact tips which are communicated with the gun bodies, the two water connectors are communicated with each other and form cooling circulation channels in the gun bodies where the two connectors penetrate, the two contact tips are tilted inwards to form a certain angle, and the angle is at 15 degrees-30 degrees. Due to the fact that the two contact tips are tilted inwards to form a certain angle, two welding wires which are arranged in penetrating mode can be intersected. When the narrow gap double-wire welding gun is operated, the welding wires are intersected, after the welding gun is powered on, only one single electric arc is formed between the welding wires and a workpiece, welding wire melting speed is guaranteed, energy consumption is reduced virtually, only a single-channel multilayer is needed for welding seam molding. Compared with a common double-wire welding gun, the narrow gap double-wire welding gun is energy-saving and efficient.

This invention relates to a composite material of alumina dispersion copper and chrome-copper alloy, its manufacturing method and application, in which, the composite material is composed of alumina dispersion copper at the core and chrome-copper alloy surrounding the core, the volume percentage of the copper is 10-70% and that of the alloy is 30-90%. The manufacturing method includes: shaping them up by a thermal extruding machine, in which, when squeezing, a glass lubricated composite material blank and an extruding drum are used to meet the section ratio of them after extruding, and conductive nozzles and electrode caps used in welding machine are produced at low price, high accuracy and high material rate due to the high temperature strength and high conductivity of the material, dispersion copper used at part of the electric contact points of the core and chrome-copper as the blank outside.

The invention provides a rotary swing type welding torch. The rotary swing type welding torch comprises a current contact nozzle, a rotary swing driving mechanism and a control device, wherein the control device is connected with the rotary swing driving mechanism so as to control the rotary swing driving mechanism to move, and the movement output end of the rotary swing driving mechanism is connected with the current contact nozzle so as to adjust the position of the current contact nozzle and/or enable the current contact nozzle to make rotary swing movement according to preset swing parameters. According to the rotary swing type welding torch, two operating modes of swing and rotation can be realized, so that heat input to the side wall of a groove can be increased by virtue of electric arc swing, and the problem of poor fusion of the side wall and the bottom of the groove during narrow gap welding of large-thickness plates is solved. The invention further provides a welding method.

An energy-saving argon tungsten-arc welding assembly with adjustable welding torch comprises a welding gun and an electrical control device which is connected with the welding gun, wherein the welding gun comprises a tungsten rod clamping component, a motor reducer (6), a cooling jacket, an electric arc nozzle (57), a nozzle retainer ring and a shielding gas nozzle; the tungsten rod clamping component comprises a tungsten rod (63) and an intermediate rod (84) which drives the tungsten rod (63) to lift and descend; the cooling jacket is used for delivering cool air film and shielding argon flow; and an argon arc welding machine is adopted as a welding source, the motor reducer (6) is taken as a drive source, the tungsten rod (63) is lifted and descended through a limit ring (96), a connecting ring (90), an upper nut and a lower nut (87) and the intermediate rod (84), the electrical control device is used for controlling the rotation direction of the motor reducer (6), furthermore, a top nut contact (21) is controlled to be communicated with an upper piece contact (15) or a lower piece contact (22), so the tungsten rod (63) is freely and continuously adjusted in a stepless manner, and is reset when the arc is quenched.