12results about How to "Improved arc stability" patented technology

A laser-ultrahigh frequency pulse arc hybrid welding device comprises a welding gun arranged on a motion execution mechanism, a laser welding head, and an ultrahigh frequency pulse current generating device, a welding power supply and a laser which are respectively connected with the laser welding head, wherein the motion executing mechanism, the welding power source and the laser are connected with the control module to transmit and control laser parameters, motion parameters and electric arc welding parameters, laser beams generated by the laser are input into the laser welding head through optical fibers, and the ultrahigh-frequency pulse current generating device generates ultrahigh-frequency pulse welding current and is connected with the welding power source in parallel. The output end of the welding power source is connected with the welding gun and the workpiece to form a loop, and therefore high-frequency compression electric arcs are generated between the welding gun and the workpiece. The stiffness and stability of the electric arc are improved through the ultrahigh frequency pulse current and the high-frequency compression effect of the ultrasonic electric arc.

The invention provides a 500MPa-grade low-slag gas shielded solid welding wire for the automobile industry. The welding wire comprises the following chemical components in percentage by weight: 0.11-0.16% of C, 0.12-0.12% of S, 0.12-0.12% of Cr, 0.12-0.12% of Cr, 0.12-0.12% of 0.50% to 0.70% of Si; mn: 1.00 to 1.35%; plt; 0.015% of the total weight; the content of S is 0.005 to 0.015 percent, and the content of Cr + Ni + Mult; 0.15% by weight; 0.20% or less of Cu; the sum of the mass fractions of all the components is 100%, and the content of the Cu element comprises a welding wire copper plating layer. The welding wire is small in welding spatter, good in electric arc stability and all-position operability, basically free of slag and free of cleaning after welding, attractive in weld joint forming, excellent in welding process performance and excellent in weld joint metal mechanical performance.

The application provides an acid core wire and a preparation method and application thereof, and particularly relates to the technical field of welding materials. The core wire comprises a steel belt sheath and a core filled in the steel belt sheath. The core comprises the following components in percentage of mass: 35-50% of rutile, 2.5-5% of zircon sand, 2.5-5% of potassium feldspar, 1.5-3% of potassium fluozirconate, 1.5-3% of quartz, 15-20% of metallic manganese, 3-5% of ferrosilicon, 15-20% of nickel powder, 1-2% of cobalt powder, 1-2% of molybdenum powder, 1-2% of aluminum-zirconium alloy, 1.5-3.5% of magnesium powder, 1-2% of perovskite, and the rest is atomized iron powder. The acid core wire has good welding process, good arc stability, less spatter, good appearance of weld formation, good deslagging property, high deposition rate and deposition rate, and the weld has the characteristics of high strength, high low-temperature impact toughness and corrosion resistance, and can meet the use requirement of high-strength Q690 rack steel.

The present invention discloses a welding wire for gas shielded arc welding, and a steel wire rod of a welding wire for gas shielded arc welding and a production method therefor. Chemical components of the steel wire rod of a welding wire for gas shielded arc welding include, in mass percentage, 0.03%-0.08% of C, 0.5%-1.0% of Si, 1.4%-1.8% of Mn, 0.013%-0.1% of S, less than or equal to 0.0015% of P, less than or equal to 0.8% of Ni, less than or equal to 0.4% of Cr, less than or equal to 0.4% of Mo, and the balance of Fe and inevitable impurities; and a liquidus temperature TL=1537-88[C]-8[Si]-5[Mn]-30[P]-25[S], a solidus temperature Ts=1536-415[C]-12[Si]-6.8[Mn]-125[P]-184[S], and 25°C≤TL-TS≤45°C.

The present invention relates to the technical field of metal additive manufacturing, and specifically to a laser arc coaxial heat source coupled additive manufacturing device and a manufacturing method. The manufacturing device includes: a ring laser system, which uses a laser to emit laser light and transmits it to a laser mirror group, and the laser mirror group emits a hollow ring laser beam; a rotating tungsten pole TIG welding system, the rotating motor rotates to drive the fixed disk and the tungsten pole to rotate, the fixed disk and the ring laser beam are coaxial, and the tungsten pole passes through the inside of the ring laser beam; a wire feeding system, which is used to transport the metal wire to the molten pool. The present invention utilizes the rotation of the tungsten pole to make the generated TIG arc rotate, and the rotation of the TIG arc and the ring laser beam are coupled to form a coupled heat source. The rotating TIG arc will increase the heated area of ​​the area to be added and increase the cladding efficiency of the ring laser beam. The rotation of the TIG arc will also drive the flow of the molten pool and improve the spreadability of the molten metal. The ring laser beam is conducive to increasing the arc stability of the TIG arc, thereby improving the droplet transition form.

The present invention provides a self-shielded flux-cored welding wire and a preparation method thereof, and specifically relates to the field of welding materials. The self-shielded flux-cored welding wire of the present invention comprises a steel strip and a flux core filled in the steel strip, and the flux core comprises the following components and the weight proportions of each component are respectively: 25-40 parts of barium fluoride, 5-10 parts of fluorite, 1-3 parts of rare earth fluoride, 1-3 parts of potassium fluoride, 1.5-3.5 parts of barium carbonate, 3-8 parts of marble, 1.5-2.5 parts of graphite, 20-30 parts of aluminum-magnesium alloy, 10-20 parts of aluminum powder, 2-4 parts of aluminum-iron, 1-3 parts of silicon-calcium alloy, and the balance is iron powder. The deposited metal of the self-shielded flux-cored welding wire of the present invention has good mechanical properties, tensile strength and yield strength, and reduces carbon emissions and manganese content in smoke.

This application provides a welding control method, apparatus, electronic terminal, and computer-readable storage medium. The welding control method includes: detecting welding information at the current moment during the welding process to obtain parameter information; determining the welding stage of the welding process based on the parameter information at the current moment; the welding process includes multiple welding cycles; the welding cycle includes a droplet formation stage and a spray transition stage; determining welding parameters according to the parameter information at the current moment and preset variation parameters corresponding to the welding stage at the current moment; the preset variation parameters include voltage change rate and current change rate; and performing welding based on the welding parameters. This application determines welding parameters by using the parameter information at the current moment and the preset variation parameters corresponding to the welding stage at the current moment, so as to control welding based on the corresponding preset variation parameters at different welding stages, thereby reducing spatter during welding.

The application provides a 62kg-grade special submerged arc flux for wind power tower cylinder welding meeting a pressure standard, which is composed of raw materials with the following mass percentages: calcium fluoride 15-20%, aluminum oxide 15-20%, marble 15-20%, fused magnesite 10-15%, rutile 10-15%, mica 10-15%, manganese ore powder 5-10%, ferromanganese-silicon 5-10%, and nickel-magnesium alloy 1-5%; and the sum of the weight percentages of the components is 100%. The 62kg-grade special submerged arc flux for wind power tower cylinder welding meeting a pressure standard has the advantages of meeting large-current welding, easy deslagging, beautiful weld formation, small post-weld machining allowance, and the like, can be used for welding of the wind power tower cylinder meeting the pressure standard, can guarantee the welding quality, and is mainly used for welding of large thick plate steel structures.

The utility model belongs to welding frock technical field discloses a kind of inner thread water pipe welding frock, including module combination base, positioning device and cylinder driving system;Module combination base is composed of height module and first mounting plate, and height module is fixedly installed on first mounting plate;Cylinder driving system includes cylinder and second mounting plate, and cylinder is fixedly installed on the reverse of second mounting plate;Positioning device includes positioning protection, copper conductive positioning and positioning column, and positioning column is fixedly installed on the front of second mounting plate;The utility model uses the pad block or screw adjusting mechanism of stackable, realizes fine adjustment precision, so that frock can flexibly adapt to the welding demand of different height, positioning protection adopts the arc structure made of high-temperature-resistant insulating material, and accurately adapts with workpiece surface, accurately presses workpiece under cylinder driving, effectively prevents the damage of welding splashing to inner thread, protects the integrity of inner thread, avoids welding defect caused by splashing.

This invention relates to an arc-extinguishing control method, a welding power source, a welding system, and a recording medium storing a program. The ball removal control period during the anti-sticking phase of the arc-extinguishing control method begins immediately after the welding start signal is switched off or after a certain period from the switch, and includes the following steps: Step S1, immediately after the welding start signal is switched off, changing a first wire feed rate setting value Fs, which is the wire feed rate setting value for the actual welding, to an arbitrary second wire feed rate setting value Fsa; Step S2, at the start of the ball removal control period, allowing the welding current to recur for a non-suppressed current period T. IP and current suppression period T IB Step S3: During ball removal control, perform at least one of droplet detachment detection monitoring and short-circuit detection monitoring, during current suppression period T. IB The feed rate is reduced if either droplet detachment or a short circuit is detected. Stable arc termination control is achieved regardless of the welding method.

This invention relates to the field of aluminum alloy welding technology, specifically a dual-gun synchronous magnetron welding process for long aluminum alloy vehicle body components. The process includes setting a first GTAW welding torch on the front side of the workpiece and a second GTAW welding torch on the back side, with the tungsten electrode tips of the two torches offset along the weld direction. The first GTAW welding torch is equipped with a first magnetron coil, and the second GTAW welding torch is equipped with a second magnetron coil. The first and second alternating magnetic fields operate in opposite phases. This invention controls the phase relationship of the two alternating magnetic fields, causing the front and back magnetic fields to operate in opposite phases. This allows the two magnetic fields to act at staggered times, avoiding the superposition and enhancement effect of magnetic fields. When using the opposite-phase scheme, the front magnetic field promotes the front arc to swing to the left during the positive half-cycle, while the back magnetic field causes the back arc to swing to the corresponding side during the negative half-cycle. The two arcs are staggered in time, and their respective magnetic lines of force do not superimpose in the same direction, thus suppressing arc interference.

The invention relates to a surface modification liquid for copper-plated solid welding wire, a modification method and an application thereof, and belongs to the technical field of surface treatment of welding wire for gas shielded welding. A surface modification liquid for copper-plated solid welding wire contains the following raw materials: 10.0-15.0 g of borax, 6.0-10.0 g of sodium silicate, 3.0-5.0 g of sulfur-containing antioxidant, 5.0-8.0 g of potassium iodide, 0.2-0.5 g of sodium dodecyl sulfonate, 2.0-3.0 g of thiolated chitosan, 30.0-50.0 g of thiourea, and 5.0-10.0 mL of amination multi-walled carbon nanotube NMP dispersion, wherein the content of amination multi-walled carbon nanotubes in the amination multi-walled carbon nanotube NMP dispersion is 5 mg / mL. A surface modification method for a copper-plated solid welding wire comprises: (1) preparing an etching solution; (2) preparing a surface modification solution; (3) spray etching the copper-plated solid welding wire; and (4) surface modification of the copper-plated solid welding wire. The method of the present invention improves the corrosion resistance and wire feedability of the welding wire through surface modification, and reduces large particle splashing during welding, which is of great significance to the development of gas shielded welding.