32results about "Arc welding apparatus" patented technology

A welder for welding a base metal. The welder may include a first electrode for forming a first arc with the base metal and a second electrode for forming a second arc between the first and second electrodes. A compact welder, welding system, and method are also provided.

A system and method for a plasma system includes a plasma torch actuated by a trigger, a consumable installed in the plasma torch, and a gas flow system constructed to receive pressurized gas and provide a gas flow to the plasma torch. A gas flow regulating system is included and configured to regulate the gas flow, and a sensing device is included and configured to monitor a gas pressure in the plasma torch. The plasma system also includes a controller configured to receive a signal from the sensing device and to determine one of a length parameter of the plasma torch and a type of the consumable therefrom.

The present invention relates generally to both a system and method for visually (e.g., via a video-based system or some other visual system) monitoring one or more objects where such objects are obscured by a high intensity light source such as a plasma, flame, or welding arc. In one embodiment, a system in accordance with the present invention comprises a digital camera, at least one light emitting diode (LED) light source, and at least one filter. In another embodiment, a system in accordance with the present invention comprises a digital camera, at least one light emitting diode (LED) light source, and at least one filter selected from a notch filter, a neutral density filter, or combinations thereof. Additionally, the system of the present invention can further include software designed to process, interpret and/or collect various data captured by the visual monitoring, or, imaging, system of the present invention.

A hybrid welding system including a hybrid welding apparatus and method of welding are provided. The hybrid welding apparatus includes a laser, an electric arc welder with a non-consumable electrode and a wire feeding device. The electric arc welder provides an electric arc without feeding a welding wire. The wire feeding device is arranged and disposed to feed a wire to a treatment area, which is located between the projections of laser beam and the electric arc. The laser and the electric arc welder are arranged and disposed to direct energy toward at least two adjacent components to form a common molten pool. The wire is fed by the wire feeding device into the common molten pool created by the laser and the electric arc.

Methods and apparatus are provided for plasma-assisted processing multiple work pieces in a manufacturing line. In one embodiment, the method can include placing the work pieces in movable carriers, moving the carriers on a conveyor into an irradiation zone, flowing a gas into the irradiation zone, igniting the gas in the irradiation zone to form a plasma (e.g., by subjecting the gas to electromagnetic radiation in the presence of a plasma catalyst), sustaining the plasma for a period of time sufficient to at least partially plasma process at least one of the work pieces in the irradiation zone, and advancing the conveyor to move the at least one plasma-processed work piece out of the irradiation zone. Various types of plasma catalysts are also provided.

An apparatus and method for performing surgery using plasma is described. In one exemplary embodiment, the apparatus includes a radiofrequency signal generator, a conditioning network coupled to the radiofrequency signal generator, and a catheter coupled to the conditioning network, the catheter including at least one electrode, such that the conditioning network conditions radiofrequency energy produced by the radiofrequency signal generator to create plasma at the at least one electrode of the catheter.

An edge of an aluminum 5xxx series sheet is welded to another aluminum 5xxx series sheet utilizing a low magnesium content aluminum alloy filler. The bottom weld seam metal is heat dressed as by a TIG and subsequently the bottom and the top, are planished to the same thickness as the sheets. Favorable properties such as the elimination of nail heads, improved corrosion resistance, and bendability are obtained.

The invention discloses a consumable electrode gas shielded arc deposition three-dimensional printing method. The method comprises the following steps: (1) a metal component three-dimensional digital model is designed in three-dimensional software; three-dimensional printing system software is adopted to slice the three-dimensional digital model to generate multiple two-dimensional data piece layers; and a processing path is formed through analysis; (2) single layer of metal components are molded through deposition by a welding gun according to the processing path; and in the welding gun, the fuse diameter is 0.08-1.5 mm, the welding voltage is 14-20 V, the welding current is 2-20 A, the wire walking speed is 1-12 mm.s-1, the wire feeding speed is 0.5-15 mm.s-1, and the shielded gas pressure is 2-5 Mpa; and (3) after deposition molding of the single layer of metal components, a three-dimensional control platform automatically adjusts a gap between the welding gun and a newest generated surface; and the three-dimensional deposition molding of the metal components is finished after multiple times of circulation. The three-dimensional metal components, molded by the method through deposition, improve the shape precision and the surface quality, and improve the metallographic structures and the uniformity; and in addition, the method has the advantages of low cost and high deposition rate.

A power supply for welding, cutting and similar operations includes a dual two-switch forward converter. The converter has two inverter circuits coupled in parallel but controlled to provide output power in an interleaved fashion. To avoid “walking” of the circuits (which could result in different duty cycles and imbalance of the load sharing), control signals are determined and applied to a first of the inverter circuits, and “on” times of the first circuit is monitored, such as by augmenting a counter to determine the number of clock cycles the first circuit is “on”. The same duration is then used for commanding output from the second inverter circuit. The duty cycles of both circuits is thus ensured to be the same regardless of changes in the total output power.

The invention discloses an application of water-soluble paper to argon arc welding of a long-distance industrial pipeline intermediate joint collision port. The application is characterized by comprising the following steps that a, two pieces of water-soluble paper (1) with the diameter larger than the pipe diameter by 100-200 mm are prepared according to the pipe diameter of pipelines; b, one piece of water-soluble paper (1) is adhered inside the corresponding pipeline (2) by using glue (4); c, one piece of water-soluble paper (1) of the two pieces of water-soluble paper is provided with an exhaust hole (3); d, a paper adhesive tape (5) is used for completely sealing a joint gap of the whole pipelines (2), and a copper pipe (8) connected with an argon strip (9) is used at the gap to fillthe pipelines (2) with argon; and e, welding is carried out when the concentration of the argon inside the pipelines (2) is detected to reach 99.9% by using an instrument. The application has the advantages that for the arrangement of the water-soluble paper in the pipelines, the measure is simple, the construction is convenient, when welding of a long-pipe-section pipeline collision port is carried out, the argon filling protection can be conveniently and rapidly completed, the pipeline welding quality is effectively guaranteed, and the engineering cost is reduced.

The invention relates to a portable rechargeable direct-current electric welding machine. A battery pack is connected to the outside of a shell and comprises a positive main wire, a positive sub-wire, a negative main wire and a negative sub-wire, wherein the positive main wire of the battery pack is connected with a weld handle connection terminal; the weld handle connection terminal is connected with a switch; the switch is connected with a voltage stabilizer; the voltage stabilizer is connected with a control panel; the control panel is connected with the voltage regulator; the voltage regulator is connected with the current regulator; the current regulator is connected with a contactor; the contactor is connected with a welding voltage meter; the welding voltage meter is connected with a welding current meter; the welding current meter is connected with the weld handle; the negative main wire of the battery pack is connected with a ground wire terminal; and the negative sub-wire of the battery pack is connected with the voltage stabilizer, the control panel, the voltage regulator, the current regulator, the contactor, the welding voltage meter and the welding current meter respectively. The portable rechargeable direct-current electric welding machine has low cost, is convenient to assemble, disassemble and carry, is not limited by a power supply, can work anytime and anywhere.

The invention relates to a program controlled trigger and a method. A Hall current sensor senses current of a welding machine and outputs a voltage sensing signal; a signal amplifier amplifies the voltage sensing signal; a Schmitt trigger processes the amplified voltage sensing signal and triggers to generate a square signal; a singlechip captures rising edges and falling edges of the square signal, counts, and generates a pulse signal when a counting value reaches a set value; the singlechip regulates and controls the position of a tap of a digital potentiometer; an outputting pulse circuit outputs the pulse signal to an external high-speed camera; and the digital potentiometer regulates a forward threshold value and a reverse threshold value of the Schmitt trigger according to the position of the regulated and controlled tap, and carries out program control on the threshold values and pre-amplification times. Compared with the prior art, the program controlled trigger runs stably, carries out program control on the threshold values and the pre-amplification times, and can adapt to different welding environments.

A vacuum adsorption welding device for plate splicing in submerged-arc welding comprises a first welding platform, a second welding platform and a gasket. The first welding platform and the second welding platform are adjacent, and the gasket is arranged between the first welding platform and the second welding platform. Each of the first welding platform and the second welding platform is provided with a plurality of vacuum suction ports. The welding device further comprises vacuum components and sealing gaskets, the vacuum components are connected to the vacuum suction ports, and the sealing gaskets are arranged along the peripheries of the first welding platform and the second welding platform. The vacuum adsorption welding device has advantages that by the vacuum components, quickness in plate fixation and convenience and quickness in operation are realized; small weld seam deformation and freeness of shaping after welding are realized.

A high power DC steam plasma torch system (S) includes a steam plasma torch assembly (1) wherein superheated steam (46) is used as the main plasma forming gas, thereby resulting in a very reactive steam plasma plume. The superheated steam (46) is injected internally directly into the plasma plume via a ceramic lined steam feed tube (25) for reducing condensation of steam before reaching the plasma plume. The superheated steam (46) flows through a gas vortex (16) which has tangentially drilled holes thereby resulting in a high speed gas swirl that minimizes electrode erosion. In the present steam plasma torch system (S), the plasma torch assembly (1) is ignited using an ignition contactor which is housed external to the plasma torch assembly (1). The superheated steam (46) is injected into the plasma plume using a water cooled steam vortex generator assembly (15).

A granular flux having controlled amounts of titanium and boron to facilitate in the formation of a weld metal having a high toughness without requiring refinement of the weld metal by reheating the weld metal, and enabling the slag to be easily removed from the weld bead.

The invention relates to a welding wire for steel-copper dissimilar metal submerged-arc welding and a welding method of the welding wirearc, belonging to the field of submerged-arc welding. The welding wire comprises the following chemical components in percentage by weight: 0.05-0.15% of arcbon, 0.80-2.10% of manganese, 0.07-0.95% of silicon, 0-0.03% of sulphur, 0-0.03% of phosphorus, 0.20-0.35% of copper, 0-0.20% of chromium, 0-0.30% of nickel and the balance of iron; the welding method comprises the following steps that: before being welded, a copper plate and a steel plate are not preheated; the steel plate and the copper plate are fixed by using gas shield welding spot welding; steel-copper dissimilar metal submerged-arc welding wires are used for matching with SJ101 welding flux so as to carry out submerged-arc welding; when being welded, the welding wire deviates 4mm-8mm from the side of the copper plate; the welding current is 396-630A; the welding voltage is 35-40V; and the welding speed is 23-30m/h. The welding joint obtained by the welding method provided by the invention has the characteristics of good mechanical performance, high efficiency, beautiful appearance and little crack, etc.

The invention relates to the technical field of welding, in particular to an argon arc welding surfacing process for a cobalt-free material ERFeCr-A5, comprising the following steps of: (1) preparing and cleaning before welding: preheating a workpiece to 100-250 DEG C; (2) welding: carrying out argon arc welding, wherein the welding current is direct current, the polarity is anode, the current range is 190-210A, the protective gas is argon gas, the flow rate of the argon gas is 11-15L/min, and the welding speed is 9-11cm/min; and (3) postheat treatment: preserving the heat of the workpiece at 100-250 DEG C for more than 4 hours. The invention aims to provide a reasonable argon arc welding surfacing process for the cobalt-free material ERFeCr-A5 to meet the requirement of a production process of a cobalt-free hard alloy surfacing layer on a sealing surface of a nuclear safety class valve.

A titanium type gas-shielded flux-cored wire comprises a welding wire flux core. The mass of the welding wire flux core is 10%-20% the total mass of the flux-cored wire. The welding wire flux core comprises, by weight, TiO2 of 35%-50%, SiO2 of 3%-10%, Al2O3 of the proportion larger than 0 and smaller than 1%, ZrO2 of the proportion larger than 0 and smaller than or equal to 1% and the balance of alloyed powder. The alloyed powder comprises the following constituents: manganese metal, ferrosilicon, ferrotitanium, magnesium powder and the balance of iron powder, wherein the weight percentages of the manganese metal, the ferrosilicon, the ferrotitanium and the magnesium powder in the welding wire flux core are 10%-20%, 1%-5%, 0.5%-2.5% and 4%-7% respectively. The content of the oxides of Al2O3 and ZrO2 which respectively have a higher melting point than TiO2 is reduced as much as possible so as to reduce the content of the impurity of nonmetal oxide in deposited metal, and therefore the effect of improving crack resistance and mechanical properties can be achieved. The titanium type gas-shielded flux-cored wire is mainly suitable for low-carbon steel welding with high requirements for crack resistance.

The invention discloses a lateral joint welding and fixing device of a deformable ultra-thin metal structure and a method for welding the lateral structure using the same, and belongs to the field ofspecial welding, and particularly relates to a lateral joint welding and fixing device of a space-deployable ultra-thin metal structure and the method for welding the lateral structure using the same.The existing problem of no welding method for the lateral portion of the deformable ultra-thin metal structure is solved. The lateral joint welding and fixing device of the deformable ultra-thin metal structure comprises a joint fixing part and lateral fixing parts, the lateral fixing parts are arranged on two sides of the joint fixing part in a central symmetrical shape, and the lateral parts are connected with the joint fixing part in a bolt mode. The welding method comprises the steps that 1, the lateral joint welding and fixing device of the deformable ultra-thin metal structure is fixedto an automatic argon arc welding clamping platform; 2, an upper pressing block is separated from a lower pressing block; 3, locating and clamping are carried out; 4, welding is carried out; and 5, the welded deformable ultra-thin metal structure is taken out. The lateral joint welding and fixing device of the deformable ultra-thin metal structure and the method for welding the lateral structure using the same realize the reliable welding of the lateral portion of the structure. The lateral joint welding and fixing device of the deformable ultra-thin metal structure and the method for weldingthe lateral structure using the same is mainly used for lateral welding of the deformable ultra-thin metal structure.

The invention discloses an electric intelligent welding machine capable of being remotely controlled. The intelligent electric welding machine comprises a machine body, a touch screen, a handle and an antenna; the touch screen is arranged at the middle part of the frontal surface of the machine body; the handle is arranged at the middle part of the upper surface of the machine body; the antenna is arranged on the edge of the upper surface of the machine body; a working indicator light is arranged at the upper part of the front end side surface of the machine body; a power supply switch is arranged at the upper part of the front end side surface of the machine body; a power supply interface is arranged at the lower part of the front end side surface of the machine body; support columns are arranged at the lower end of the machine body; cooling windows are arranged on the back surface of the machine body; a welding cable positive wiring terminal is arranged at the lower part of the back end side surface of the machine body; a wire feeding machine control socket is arranged at the lower part of the back end side surface of the machine body; and a welding cable negative wiring terminal is arranged at the lower part of the back end side surface of the machine body. The intelligent welding machine has the following beneficial effects: compared with a traditional electric welding machine, the intelligent electric welding machine is more convenient for operation and higher in intelligence degree, and can be remotely controlled, so the trouble of frequently moving the electric welding machine can be avoided.

An electromechanical contactor device is disclosed for use in a wire feeder for an electric arc welder having a power source and a gun with a contact tip through which welding wire is fed and a weld cycle start trigger switch having a closed condition to initiate and hold a weld cycle and an open condition. The contactor device comprises a power inlet lead connected to the power source, an output lead connected to the contactor tip, one or more current branches between the input lead and the output lead with a mechanical contactor having an open condition and closed condition for opening and closing the branches. A solenoid operates the contactor device based upon the condition of the trigger switch, with a first position to close the contactor when said trigger switch is shifted from the open condition to the closed condition and to hold the contactor closed when the trigger switch is in the closed condition. The contactor device utilizes one or more sets of electrical contacts formed from non-hazardous silver alloys.

A method for in situ electrical connection of implantable components. A first implantable component is electrically coupled to a first connector half, and a second implantable component is electrically coupled to a second connector half. The method comprises mating the first and second connector halves with one another; and forming at least one readily severable unitary contact between the first and second connector halves.

The welding method comprises the following steps that a first groove is machined in the inner side face of an angle steel butt welding seam, the first groove is filled with a first welding layer, and when the first welding layer is welded, the current ranges from 245 A to 285A, the voltage ranges from 27 V to 29 V, the welding speed ranges from 470 mm/min to 570 mm/min, and the heat input ranges from 7 kJ/cm to 10 kJ/cm; a second groove is machined in the outer side face of the butt welding seam, and the depth of the second groove extends to the center of the thickness of the first welding layer from the outer side face; the second groove is filled with a second welding layer, and when the second welding layer is welded, the current ranges from 245 A to 285A, the voltage ranges from 27 V to 29 V, the welding speed ranges from 470 mm/min to 570 mm/min, and the heat input ranges from 7 kJ/cm to 10 kJ/cm; the outer side of the second welding layer is filled with a plurality of welding layers. According to the invention, the one-time inspection qualification rate of the steel-clad first-grade welding seam of the angle steel tower is increased to 99%, and no defect position exists during nondestructive testing.

The invention discloses a welding material for ZG40Cr25Ni20Si2 and relates to the field of welding materials. The welding material for ZG40Cr25Ni20Si2 is composed of the following chemical componentsof, by mass, no greater than 0.5% of C, 16.0-18.0% of Cr, 6.0-10.0% of Fe, no greater than 1.0% of Mn, 1.5-3.0% of Nb, 0.6-1.0% of Si, no greater than 0.015% of S, no greater than 0.015% of P and no less than 70.0% of Ni. Weld joints prepared from the welding material have good surface appearance and excellent corrosion resistance and normal-temperature mechanical properties, and show obviously-improved high-temperature mechanical properties, the quality of the products can be greatly improved, and the service life of the products can be greatly prolonged.

The invention discloses a submerged arc welding method with excellent toughness of a welded joint of a BB503 steel plate for a 100 mm thick blast furnace shell. The tensile strength of the BB503 steelplate is 500 - 600 MPa, the yield strength is 330 - 400 MPa, and the elongation rate is no less than 24%, minus 20 DEG C low temperature impact energy is no less than 100 J. The welding material matched with BB503 steel plate with excellent mechanical properties is made of symmetrical K-shaped groove; submerged arc flux is treated (200 - 350) DEG C x 2hours; the steel plate is free from preheating before welding, the thickness is 100 mm + 100 mm steel plate combination is welded by multi-layer submerged arc welding, and the temperature between the welding lines is no more than 200 DEG C. Thewelded joint of a BB503 steel plate for a 100 mm thick blast furnace shell has excellent comprehensive mechanical properties, high production efficiency and strong practicability, and is suitable forapplication and promotion of steel welding for blast furnace shells.