25results about How to "Arc stabilization" patented technology

The invention provides a solid welding wire for 1000 MPa high-strength steel, a preparation method and a welding method. The welding wire comprises the following chemical components in percentage by weight: 0.05-0.12 wt% of C, 1.80-2.10 wt% of Mn, 0.55-0.90 wt% of Si, less than or equal to 0.025 wt% of P, less than or equal to 0.025 wt% of S, 1.05-1.40 wt% of Cr, 2.80-3.10 wt% of Ni, 0.50-0.85 wt% of Mo, 0.030-0.085 wt% of Ti, 0.020-0.060 wt% of V, 0.20-0.30 wt% of Cu, the mass ratio of Cr to Ti + V is greater than or equal to 10, and the mass ratio of Ni to Cr + Mo is greater than or equal to 1.5. And the balance of Fe. The welding wire has good comprehensive mechanical properties and is suitable for welding of 1000MPa-grade high-strength steel.

The invention discloses a CMT electric arc welding method for defect repair welding of a ZL114A aluminum alloy casting, and belongs to the technical field of defect repair of aluminum alloy castings. The method aims at solving the problems that an existing repair welding method for the ZL114A cast aluminum alloy is high in heat input, large in deformation and low in repair efficiency. The method comprises the following steps: firstly, aiming at defects of different sizes, machining the defects into regular spherical-crown-shaped grooves of different sizes by utilizing a cold machining method; an electric steel wire brush is used for polishing the inner wall of the groove and base metal around the groove, and surface stains and oxide skin are removed; the casting is placed on a welding workbench; robot CMT welding equipment is adopted for repair welding; and writing a welding gun repairing path on the robot demonstrator. And repair welding is carried out according to the following principles: repair welding is carried out by utilizing an Al-Si welding characteristic curve, a repair welding piece is preheated to 250-350 DEG C, shielding gas is started, and automatic repair is started according to the planned path, the wire feeding speed and the welding speed. By means of the method, high-quality repair welding seams without pores and cracks can be obtained.

The utility model relates to the technical field of stainless steel processing equipment, and discloses a welding machine for stainless steel production and processing, which comprises a machine base main body, a welding machine and a sliding welding head, the sliding welding head is connected with the welding machine, an adjusting mechanism is arranged on the surface of the machine base main body, and feeding rollers are arranged on two sides of the machine base main body. Symmetrical clamping devices are installed on the surface of the machine base body, and ground wires are installed in the clamping devices. When a stainless steel material is welded, the material can rotate on the operation table, the material and a ground wire can be conveniently connected, a complete welding circuit is formed among the material, a welding head and the ground wire, electric arcs at the welding position are kept stable, the welding effect is improved, the material can rotate, multi-angle welding of the welding head is facilitated, and the welding efficiency is improved. A distance is kept between the ground wire and the operation table, and the joint is insulated, so that the serious electric shock danger caused by the fact that current possibly passes through a human body to form a loop is avoided.

The invention discloses a roller die drawing coating welding wire and a preparation method and application thereof. The invention belongs to the technical field of welding materials. The technical problems that in the current automatic welding process, splashing is large, electric arcs are not stable, and a contact tube is prone to being blocked are solved. The method comprises the following steps: heating plant-based ester oil, adding a composite nano additive, a solid lubricant, carbon black, MoS2 and nano CuO, and uniformly mixing to obtain a nano coating mixture; wherein the composite nano additive is prepared from nano aluminum oxide, nano titanium dioxide and nano graphene; and coating the nano coating mixture on a welding wire substrate through a coating machine, drying after coating, and carrying out on-line steam heating curing to obtain the coated welding wire. The method is used for preparing the stainless steel welding wire and the nickel-based alloy welding wire.

The martensitic stainless steel flux-cored wire comprises a flux core and an outer skin, and the flux core is composed of, by mass, 12%-15% of chromium powder, 2%-4% of titanium powder, 6%-8% of molybdenum powder, 2%-4% of vanadium powder, 1%-3% of niobium powder, 0.2% of carbon powder, 0.5%-1% of tungsten carbide, 1%-2% of manganese powder, 0.3%-0.6% of silicon powder, 0.1%-0.2% of rare earth oxide and the balance iron powder; the invention further discloses a method for preparing a structural part through the martensitic stainless steel flux-cored wire, and the martensitic stainless steel flux-cored wire is used for additive manufacturing by adopting MIG welding as a heat source to obtain the structural part. Additive manufacturing of the martensitic stainless steel structural part is achieved through programming of the full-automatic welding robot, and efficiency is high; in the printing process, electric arc is stable, weld joint forming is attractive, the surface is smooth and clean, and pores and slag inclusion are avoided.

The utility model discloses a modularized electric flame stove, which comprises a power supply module for converting alternating-current mains supply into low-voltage direct-current voltage and outputting the low-voltage direct-current voltage after the alternating-current mains supply voltage is accessed; the driving module is electrically connected with the power supply module and is used for converting the input direct current into driving voltage; the boosting module is electrically connected with the driving module and is used for adjusting the driving voltage and generating high voltage; the rectifying module is electrically connected with the boosting module and is used for generating voltage-doubled rectified voltage according to the high voltage; and the furnace end module is electrically connected with the rectification module and is used for carrying out arc striking according to the rectification voltage and spraying the high-energy plasma generated in the arc environment to the pot body. The power supply module, the controllable switch, the driving module and the control knob are located in a low-voltage area, so that human body injury caused by high voltage when a user touches the control knob or the controllable switch is avoided; the furnace end module disclosed by the utility model can obtain higher voltage-multiplying rectified voltage, so that the stable electric arc can be generated in the working process of the electric flame stove.

This invention provides a submerged arc welding wire for coal mine hydraulic supports that combines high strength and toughness in welds, and a method for its preparation. The chemical composition of the submerged arc welding wire, by mass percentage, includes: C: 0.09~0.15, Si: 0.05~0.10, Mn: 1.81~2.30, P≤0.010, S≤0.005, Cr: 0.20~0.45, Ni: 2.30~2.49, Cu: 0~0.09, Mo: 0.51~0.90, Ti≤0.020, Ca≤0.015, V≤0.025, Zr≤0.015, O≤0.004, N≤0.006, with the balance being Fe and other unavoidable impurities. The beneficial effects of the present invention are: (1) By rationally designing the chemical composition, under the process conditions of 20~40 kJ / cm heat input, the yield strength of the weld metal is ≥700 MPa, the tensile strength is between 810~910 MPa, the elongation is ≥22%, and the low-temperature impact toughness at -40℃ is ≥100J; (2) The welding wire preparation process is simple and does not require annealing treatment. When combined with the sintering flux commonly used in engineering, the arc is stable during the welding process, and the weld metal after welding has excellent strength and toughness, which meets the welding requirements of Q690M hydraulic support steel and can promote the large-scale development and application of high-strength hydraulic support steel.

The invention discloses an underwater local dry TIG welding repair system and a welding method. The welding repair system is characterized by comprising a robot, a TIG welding power supply, a TIG welding gun, water cooling equipment, a wire feeding device, a movable contact drainage cover, shielding gas equipment, drainage gas equipment, intelligent monitoring equipment, an ultrasonic frequency pulse power supply device, an electric signal detection device and an acoustic signal detection device. The four systems are connected with an industrial robot, and the underwater local dry method TIG welding system is jointly formed. Defect positions can be accurately captured through the visual sensing system, the welding process can be adjusted through real-time images fed back by intelligent monitoring equipment, underwater refined welding work is achieved, and the welding quality is further improved by applying ultrasonic frequency pulses to assist the welding system. By adopting the underwater repair system, the underwater repair work of equipment such as the spent fuel pool can be better completed in a complex environment in the nuclear power field, and the application is wide.

This invention discloses a high-temperature resistant aluminum alloy wire suitable for arc-fused-wire additive manufacturing and its preparation method. The alloy wire comprises: manganese (Mn): 0.3-0.5%, copper (Cu): 5.3-5.8%, titanium (Ti): 0.15-0.35%, boron (B): 0.0005-0.006%, vanadium (V): 0.05-0.3%, zirconium (Zr): 0.05-0.2%, cadmium (Cd): 0-0.4%, silicon carbide (SiC): 0.1-0.4%, iron (Fe): ≤0.15%, silicon (Si): ≤0.06%, magnesium (Mg): ≤0.05%, zinc (Zn): ≤0.1%, other individual impurity elements: ≤0.05%, total other impurity elements: ≤0.15%, and the balance being aluminum (Al). The wire of this invention exhibits a uniform microstructure and moderate strength. The deposit formed by the arc-fused-wire additive manufacturing process possesses excellent strength, toughness, and other mechanical properties, with significantly improved heat resistance.

The invention belongs to the technical field of welding materials, and particularly relates to a nickel-chromium-molybdenum alloy welding rod and a preparing method and using method thereof.The welding rod comprises a core wire and a coating, and cladding metal of the welding rod comprises, by weight, 0.03%-0.05% of C, 0.4%-0.7% of Mn, 15.5%-15.8% of Cr, 5.7%-5.9% of Ni, 0.8%-0.95% of Mo, smaller than or equal to 0.30% of Si, smaller than or equal to 0.020% of S, smaller than or equal to 0.030% of P and the balance Fe and inevitable impurities. According to the welding rod, the welding performance and various mechanical properties of the welding rod can be properly adjusted by adjusting the content of nickel, chromium and molybdenum, so that the welding rod can meet various heat treatment modes after welding, and the adaptability and universality of the welding rod are improved.

The invention discloses a metal type flux-cored wire which comprises a flux core and an outer skin, the flux core is composed of, by mass, 60%-70% of nickel powder, 22%-25% of titanium powder, 3%-10% of tin powder, 1%-4% of manganese powder, 2%-6% of silicon powder, 1%-2% of vanadium powder and 1%-4% of aluminum powder, and the sum of the mass percentages of the components is 100%; the outer skin is an annealed T2 copper strip, and the filling rate of the powder core wire is 15 wt%; the invention further discloses a method for preparing the wind turbine generator slip ring through the metal type flux-cored wire, surfacing is conducted on the surface of the martensitic stainless steel base material through 3D printing by adopting an additive manufacturing method, and therefore the wind turbine generator slip ring is obtained. According to the wind turbine generator slip ring prepared through the metal type flux-cored wire, the welding residual stress is reduced, the anti-fatigue capacity of a structural part is improved, and the excellent mechanical property is achieved.

The trousers comprise a trousers body, the trousers body comprises a set of front waist dart and a set of rear waist dart, and the front waist dart and the rear waist dart are fixed in a sewing mode. The matched waist is arranged above the trouser body and comprises a pair of matched waist strips, and the matched waist strips are sewn and fixed above the group of front waist dart and the group of rear waist dart; a pair of waist matching strips is designed on the upper portion of the pants body, the skin-friendly layer, the supporting layer and the moisture absorption and sweat releasing layer are arranged on the waist matching strips respectively, through the three-layer design and the sewing mode, the softness and comfort of the waist matching strips are improved, the stability of the waist matching strips is improved, meanwhile, the curvature is reduced, the radian of the waist matching strips is smoother, and the waist matching strips are more comfortable to wear. Therefore, the shape can be kept at a certain bending degree, and the flat effect can be easily achieved through ironing. By means of the design, the overall appearance and quality of the trousers are effectively improved, and the ironing problem caused by hardness and bending design of a traditional waist fitting is solved.

The present invention belongs to the technical field of welding materials, and specifically provides a high-toughness flux-cored welding wire, comprising a carbon steel sheath and a flux core filled in the carbon steel sheath, wherein the flux core comprises, by mass percentage, 30-38% TiO2, 5-8% feldspar, 3-5% smelting agent, 2-3% sodium fluoride, 2-5% Si, 13-17% Mn, 4-6% Mg, 2-4% Ni, 0.45-0.75% B, 0.02-0.04% C, and the balance is Fe. The high-toughness flux-cored welding wire provided by the present invention controls the contents of Ni, C, Mn, B and other alloy elements in the weld metal by adjusting the components of the flux sheath, so that the deposited metal has excellent impact toughness in both the welded state and the heat-treated state, and when CO2 gas shielded welding is adopted, the low-temperature impact absorption energy at -40°C is greater than 80J, the tensile strength is higher than 490MPa, the elongation is greater than 22%, and the mechanical properties are stable. Moreover, flux-cored welding wire can be used for all-position welding, with excellent welding process performance, stable arc and beautiful weld formation.

This application provides a welding control method, apparatus, equipment, and storage medium. In the embodiments of this application, a welding control mode alternating between pulse welding and DC welding is adopted. During the pulse welding cycle, normal welding is performed on the base material, while during the DC welding cycle, the minimum welding voltage and current are used to maintain the arc from extinguishing, preventing arc interruption and avoiding molten droplet spatter or arc ignition failure each time the arc is started. The minimum wire feed speed is used to control wire feeding, ensuring that the welding wire melts but does not transition into the molten pool, preventing short-circuit transition. Furthermore, at the end of both the pulse welding cycle and the DC welding cycle, the wire feed speed continues for a preset time before being changed, giving the wire feed motor appropriate reaction time. This ensures that the wire feed motor does not overshoot during speed changes, resulting in a more stable arc and a more aesthetically pleasing weld, especially for fish-scale welds, where the scales are clearer.

The invention discloses a duplex stainless steel metal type flux-cored wire for a 3D printing flange structural part and a method. Flux core alloy components in the metal type flux-cored wire comprise, by mass, 22%-28% of chromium powder, 1%-2% of titanium powder, 2%-4% of aluminum powder, 6%-8% of molybdenum powder, 2%-3% of copper powder, 5%-7% of niobium powder, 0.03% of carbon powder, 1%-2% of manganese powder, 0.3%-0.6% of silicon powder, 0.1%-0.2% of chromium nitride and the balance iron powder, and the sum of the mass percentages of the components is 100%. The duplex stainless steel structural part obtained through 3D printing is attractive in shape, excellent in mechanical property and good in corrosion resistance, and the use requirements of flange structural parts are completely met.

The utility model relates to the technical field of welding wire production, and discloses a cleaning device for welding wire production, which comprises a working table, a back plate is fixedly arranged at the top of the working table, supporting legs are fixedly arranged at the bottom of the working table, a processing mechanism is arranged at the top of the working table, a wiping mechanism is arranged in the working table, and a cleaning mechanism is arranged on the back plate. A motor is started to enable a first belt pulley and a rotating shaft to rotate, so that a welding wire rotating roller rotates, under cooperation of a wire guide wheel and a wire pressing roller, a welding wire can be wound conveniently, along with rotation of the first belt pulley, a paddle rotates, flowing of a cleaning solution is facilitated, and the welding wire can be cleaned conveniently; and the connecting frame is conveniently limited through the arranged inserting block, the welding wire is conveniently wiped through the arranged cleaning sponge, impurities on the surface of the welding wire can be removed, water vapor on the surface of the welding wire can be wiped away, and the stability of an electric arc in the welding process is guaranteed.

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.

The present invention provides a surfacing flux-cored welding wire and a preparation method and use thereof, and specifically relates to the technical field of welding materials. The surfacing flux-cored welding wire of the present invention comprises a steel strip and a flux core filled in the steel strip, and is characterized in that, in terms of the mass percentage of the flux core, the flux core comprises the following components: 30-40% of metal chromium, 2-5% of metal manganese, 5-6% of quartz, 25-30% of rutile, 3-5% of ferrosilicon, 5-10% of potassium titanate, 5-10% of fluorite, 2-2.5% of ferromolybdenum, 0.1-0.2% of ferrovanadium, 1-2% of ferrotungsten, 1% of rare earth oxide, and the balance is iron powder. The surfacing flux-cored welding wire of the present invention has good wear resistance and corrosion resistance, and the weld has no pores in the absence of gas and protective agent, and is suitable for surfacing of valve sealing surfaces, which can improve its surface wear resistance and corrosion resistance, thereby extending the service life of the valve.

The invention discloses a high fracture toughness flux-cored wire for ocean engineering, which comprises a carbon steel sheath and powder filled in the sheath, and is characterized in that the powder comprises non-metal powder and metal powder; the non-metal powder comprises the following components in parts by weight: 360-380 parts of titanium dioxide; 13 to 25 parts of quartz; 40 to 50 parts of potassium silicotitanate; 35 to 55 parts of sodium silicotitanate; and 13-18 parts of cryolite. The welding wire is suitable for multi-layer and multi-pass welding of an EH36 steel plate with the thickness of 80 mm; and the welding heat input is controlled to be 12-25 kJ / cm, and good process adaptability is achieved.

The present invention provides a coated electrode and its coating and preparation method, and specifically relates to the field of welding materials. The electrode coating of the present invention comprises the following components and the weight proportions of each component are: 20-25 parts of marble, 23-28 parts of fluorite, 6-8 parts of barium carbonate, 6-9 parts of titanium dioxide, 4-5 parts of ferrosilicon, 1-2 parts of potassium feldspar, 5-7 parts of metal manganese, 4-5 parts of nickel powder, 1-2 parts of ferromolybdenum, 1-2 parts of rare earth fluoride, 17-22 parts of iron powder, 0.5-1 part of sodium carbonate, 0.3-0.6 parts of ferroboron, 0.5-1 part of sodium carboxymethyl cellulose, and 0.2-0.5 parts of graphite. The coated electrode of the present invention has good welding in all positions, small spatter, good slag removal, beautiful weld formation, and the electrode deposited metal has high strength and toughness.

The application provides a welding wire, a flux core and a cladding metal suitable for welding of 09CrCuSb steel, and belongs to the field of welding materials.The raw material of the flux core comprises, in weight parts, 3.0-6.0 parts of natural rutile, 1-3 parts of 75# ferrosilicon powder, 0.2-0.5 parts of sodium titanate, 0.1-0.3 parts of aluminum powder, 0.2-0.3 parts of fluoride, 1-3 parts of manganese iron powder, 0.6-1.2 parts of metallic chromium, 0.20-0.80 parts of copper powder, 0.2-0.4 parts of ferrochrome, 0.2-0.5 parts of quartz sand, 0.1-0.3 parts of antimony powder, 0.8-1.8 parts of iron powder and 0.4-1.0 parts of electrolytic manganese, so as to solve the problem of poor sulfuric acid dew point corrosion resistance of the cladding metal formed by welding of 09CrCuSb steel in the prior art.

The invention discloses a spectrograph for in-situ photocatalytic reaction of a magnetic resonance spectrometer. The spectrograph comprises a xenon lamp, a collecting lens and a shell, the middle of the collecting lens is a semi-elliptical-table-shaped collecting cavity, the long axis of the collecting cavity is provided with a first focus and a second focus, the first focus is provided with a light-emitting center of the xenon lamp, and the second focus is fixedly provided with an optical filter and an optical fiber. The light is reflected to the optical filter by the light-gathering cavity to generate light with different wavelengths, and then the light is collected by the optical fiber and guided into the magnetic resonance spectrometer to react with a test sample; xenon lamp light is a continuous spectrum, the spectrum line range is wide, and the whole test sample can be radiated, so that the xenon lamp light can react with the whole test sample; the light-gathering cavity is an elliptical table body, and the light moves along the shortest path, so that the light is reflected at the second focal point, and the light intensity at the second focal point is relatively high. Therefore, the light energy generated by the design and all the test samples are subjected to photocatalytic reaction, and the light intensity is relatively high.

The application aims to provide a hot plasma torch capable of freely adjusting power while providing more stable arc. The hot plasma torch has a first anode assembly and a second anode assembly, and the two anode assemblies are respectively configured with independent first power supply and second power supply, so that when the hot plasma torch is used, the high-temperature arc generated can be inside the first anode assembly or inside the second anode assembly, avoiding local high-temperature electrode ablation caused by a single anode, and providing the service life of the hot plasma torch. Specifically, the hot plasma torch provided by the application comprises a cathode assembly, a first anode assembly and a second anode assembly, a first power supply is arranged between the cathode assembly and the first anode assembly, a second power supply is arranged between the cathode assembly and the second anode assembly, and the first power supply and the second power supply are independent of each other.

The present invention provides a DC welding control method and device, the method comprising: obtaining the transition time of the molten droplet, determining the molten droplet transition time deviation value based on the preset DC welding standard parameters; if the deviation value exceeds the first preset range, adjusting the arcing stage parameters, re-determining the deviation value, so that the deviation value is within the first preset range; obtaining the arcing time and arcing energy after parameter adjustment, and determining the arcing time deviation value and arcing energy deviation value based on the DC welding standard parameters; adjusting the short-circuit stage parameters according to the arcing time deviation value and the arcing energy deviation value. By adjusting the arcing stage parameters, the molten droplet transition time is reasonable, the arc is stable, and no large spatter is generated; by adjusting the short-circuit stage parameters to match the arcing stage, the force of the wire breaking at the moment of transition is small, and the amount of spatter generated during the welding process is further reduced, thereby reducing the later cleaning, improving the welding efficiency, and improving the welding effect.

The present invention relates to the field of metal welding technology, and in particular to a high-performance nickel-based welding rod and a preparation method thereof. The high-performance nickel-based welding rod comprises a welding core and a coating covering the welding core, wherein the coating is composed of powder and a binder, and the binder comprises the following components in parts by weight: 10-18 parts of modified montmorillonite, 5-10 parts of β-cyclodextrin, 3-8 parts of sodium dodecanoate, 20-30 parts of potassium sodium water glass, 1-5 parts of calcium alginate, 3-6 parts of sodium chloride, and 1-3 parts of water. The nickel-based welding rod prepared by the present invention has high coating strength, stable arc, and less spatter during welding; excellent welding process, good slag removal, and beautiful weld formation; high mechanical properties and low-temperature toughness of the cladding metal.