25results about How to "Beautiful weld shape" patented technology

The invention discloses a high-alloy wear-resistant roller repair welding material, and belongs to the technical field of alloy repair welding. The method is achieved through the three steps of a coal mill roller sleeve, a lining tile deposited metal formula, an alloy element transition coefficient formula and wear-resistant surfacing flux-cored wire preparation. The self-protection flux-cored wire can be suitable for various welding positions, and single-face welding and double-face forming are good; the production efficiency is high, and compared with manual welding, the allowable welding current of the self-protection flux-cored wire is large, and the deposition efficiency is high. According to the method, various hole pattern design methods including a strip steel edge and circumference combined bending method are adopted, the hole pattern of the roller is subjected to improved design, the forming mode of a steel strip on a wire rolling machine is changed, finally, a lap joint O-shaped section is formed, and the quality of the flux-cored wire is improved. The carbide in the welding wire surfacing sample is finer, more in quantity and more regular in arrangement.

The invention discloses a welding method for a tower drum and a foundation ring of a wind generating set. Comprising the following steps: a welding preparation stage: carefully selecting and treating materials, strictly debugging equipment and carefully preparing weldments; in the welding implementation stage, an argon-rich mixed gas shielded welding method is determined, welding process parameters are optimized, and the welding processes of a single-section longitudinal seam and a flange, two small-section assembly, large-section assembly length, an inner circular seam and an outer circular seam are accurately controlled; in the welding quality control stage, welding parameters are monitored and adjusted in real time, and appearance inspection after welding, RT ray inspection, mechanical property testing and metallographic testing are strictly conducted; and the production practice and optimization stage is applied to actual production, problems are tracked and solved, and the process is continuously optimized to improve the quality. The method effectively improves the welding quality and the production efficiency, enhances the structural stability, reduces the cost and promotes the development of the wind power industry.

The plasma automatic welding device comprises a machine base, the inner side of an equipment frame is rotationally connected with an overturning box, and the inner side of the overturning box is rotationally connected with a clamping disc; a first linear motor for controlling the sliding connection frame to move horizontally is installed on the machine base, a second linear motor is installed on the vertical frame, a stepping motor is installed in the cross arm, and an arc length control piece is arranged in the shell sleeve. A wire moving mechanism is arranged in the wire feeding frame. According to the device, firstly, the overturning driving mechanism drives the overturning box to rotate, meanwhile, the driving part controls the clamping disc to rotate, the position of a welding seam of a welded workpiece is adjusted, the position of a welding gun can be adaptively adjusted according to the welding requirement of the workpiece, the flexibility of the device is improved, it is guaranteed that the welding seam is formed uniformly, and the quality of a welded part is improved; and secondly, through the arrangement of the arc length control piece, the arc of a welding spot is stabilized at a certain height, so that the purposes of uniform and attractive welding seam forming and improved strength are achieved.

The invention belongs to the technical field of welding, and particularly relates to a consumable electrode CO2 gas shield flux-cored wire suitable for cryogenic high manganese steel welding, and a flux core accounts for 25-30% of the total weight of the flux-cored wire; the flux core comprises, by weight, 25%-35% of rutile, 30%-34% of electrolytic manganese metal, 1%-5% of potassium sodium titanate, 2%-5% of quartz, 1%-3% of zircon sand, 0-0.5% of manganese ore, 1%-3% of rare earth ferrosilicon alloy, 0.5%-1.5% of rare earth fluoride, 3%-8% of high-carbon ferrochrome, 2%-4% of molybdenum powder, 2%-4% of magnesium-calcium alloy, 3%-7% of aluminum-zirconium alloy, 9%-12% of nickel-magnesium alloy, 0.5%-1.5% of rare earth silicon-calcium alloy and the balance flux. 1-1.5% of bismuth oxide, 0.5-1.5% of graphite and the balance of iron powder. The invention provides the consumable electrode CO2 gas shield flux-cored wire which is good in process and mechanical property, simple in production process and suitable for cryogenic high manganese steel welding.

The invention provides an anti-weld-penetration dissimilar aluminum alloy unequal-thickness thin plate corner joint welding method, belongs to the technical field of electric arc welding, can prevent the problem that a thin plate is easy to weld through caused by an existing CMT welding production process, can reduce joint deformation and inhibit undercut, and enables a weld joint to be attractive in forming and good in consistency.

The invention provides a micron-sized rare earth cerium additive modified 1000MPa-grade high-strength steel submerged-arc welding flux as well as a preparation method and application thereof, and belongs to the technical field of flux preparation. The invention solves the problems of low low-temperature toughness, high crack generation tendency, burning loss of alloy elements and the like of the existing 1000MPa-grade high-strength steel submerged-arc welding deposited metal. The rare earth cerium additive is introduced into the welding flux, the additive can improve the fluidity of the welding flux so as to improve the welding quality, meanwhile, micron-sized rare earth cerium has the effects of refining grains and modifying inclusions, and the micron-sized rare earth cerium is matched with other components in the welding flux so that the strength of deposited metal can be enhanced, and the low-temperature impact toughness of the deposited metal can be improved. The flux can be used for welding 1000MPa-grade high-strength steel under the working conditions that the online energy is greater than 30kJ / cm and the thickness of a base metal plate is greater than 80mm, the mechanical property of deposited metal after welding is excellent, the construction cost of the high-strength steel for water-power engineering can be reduced, and the flux has remarkable economic benefits and social benefits.

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 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 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 invention discloses a flux-cored wire automatic vertical position welding process for 9Ni steel, which comprises the following steps of: S1, according to the technical requirements of the 9Ni steel, smelting the 9Ni steel by an oxygen converter, and performing external refining; the delivery state of the steel plate is quenching and tempering; s2, technical model selection of a matched flux core: selecting a flux-cored wire with the diameter of 1.2 mm; s3, automatic welding equipment is adopted, a welding joint is an X-shaped groove, the depth of a first welding surface accounts for 2 / 3 of the thickness of the steel plate, the angle of the groove is that the first welding surface is 60 degrees, the later welding surface is 60 degrees, the truncated edge is 2 mm, the root gap is 0-3 mm, after welding of the first welding surface of the X-shaped groove is completed, an angle grinder is immediately adopted for cleaning a reverse welding seam, and then welding continues to be conducted; according to the process, flux-cored wire automatic vertical position welding of 9Ni steel is carried out, the welding process is stable and reliable, formed welding seams are attractive and uniform, nondestructive testing and mechanical property testing results of welded joints meet the specification requirements of classification societies, and the stable and reliable welded joints can be obtained.

The application relates to an aluminum-silicon-strontium-titanium-zirconium alloy and an aluminum-silicon-strontium-titanium-zirconium alloy welding wire prepared from the same and belongs to the technical field of aluminum alloy welding wires. The alloy components and the weight percentages are as follows: Si: 4.50-5.50%; Mg: 0.01-0.05%; Sr: 0.02-0.50%; Ti: 0.01-0.15%; Zr: 0.01-0.20%; La: 0.01-0.10%; Ce: 0.01-0.15%; C: <0.0010%; the balance is Al and inevitable impurity elements, and the content of the inevitable impurity elements is less than 1.0 wt%. The application further discloses an aluminum-silicon-strontium-titanium-zirconium alloy welding wire prepared from the aluminum-silicon-strontium-titanium-zirconium alloy. Through control of the alloy components and the content of each component, the welding wire formed by the application has excellent performance in alloy mechanical properties, casting performance, grain refinement and welding quality.

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 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.

This invention discloses a method for manufacturing an electric motorcycle battery pack housing. An integrally extruded aluminum alloy profile is cut and bent to form the main frame structure of the battery pack housing. The profile has two hollow sides, enabling direct bending of the thick-walled sides. This completely eliminates the complex pre-machining and laser welding processes at bends. The hollow structure effectively absorbs and releases stress during bending, preventing cracks and wrinkles. The production process is simplified to "extrusion → cutting → bending → welding," significantly shortening the production cycle. The U-shaped splicing significantly improves the tolerance to bending angle errors, making laser welding easier to align and resulting in more consistent weld penetration. This avoids stress concentration, improves fatigue resistance, and ensures a smooth weld transition without the need for grinding.

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 present application belongs to the technical field of welding manufacturing of large steel structure, and particularly relates to a multi-layer and multi-pass full penetration welding process for a right-angle structure. The welding process comprises the following steps: cutting a double-sided asymmetric groove on a rib plate, one side of which is a large groove and the other side is a small groove, and polishing the groove; fixing the rib plate and a spoke plate on the small groove side by using a process triangular plate; welding the rib plate and an outer ring as well as the spoke plate, the rib plate and the spoke plate being welded as horizontal welding, and the rib plate and the outer ring being welded as vertical welding, and removing the process triangular plate; and performing non-destructive testing and annealing heat treatment on the weld. The welding process reduces labor intensity, improves the working environment, and ensures the stability and consistency of the welding quality.

A Fe-Mn series damping steel gas shielded flux-cored wire, comprising a stainless steel sheath and a flux core, the weight of the flux core accounting for 13-15% of the total weight of the flux-cored wire, the raw material composition of the flux core and the weight percentage content thereof being as follows: 2-3% of marble, 50-55% of rutile, 3-4% of feldspar, 45 # 6-8% of ferrosilicon, 2-3% of rare earth fluoride, 5-7% of magnesium powder, 3-4% of electrolytic manganese, 2-3% of sodium fluoride, and the balance being iron powder. The present application not only has good all-position welding process performance and beautiful weld, but also has excellent mechanical properties and reaches ultra-low hydrogen level of diffusible hydrogen content of deposited metal, and can meet the welding requirements of Fe-Mn series damping steel.

The application discloses a welding method for embedding a large plate beam flange plate in a door-shaped bearing frame of a waste heat boiler, belongs to the field of welding, and aims at the special structure of the embedded large plate beam of the waste heat boiler which is a core bearing steel structure of a power station in a newly-built power plant, and faces the weld seam which bears a larger shearing force in a semi-V-shaped welding groove, and a high-quality welding process is developed; the expansion amount of the web plate of the large plate beam under the action of welding prestress is predicted in advance, then the heating temperature corresponding to the expansion amount is back calculated, the flange plate and the web plate are heated at the same time in a differentiated manner, the expansion amounts of the flange plate and the web plate are fully released before welding, the weld seam width is positioned in initial welding, the deposited welding tin is stably and closely combined with the connected steel member, the preheating temperature of the web plate is reduced in a gradient manner during welding, the thermal expansion and cold shrinkage of the web plate are synchronized with the heat conduction and release in the weld seam forming process, and the weld seam hidden danger is overcome from the process mechanism and operation steps.

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.

This invention discloses a welding device for automotive rear axle housings, belonging to the field of rear axle housing welding technology. It includes a base, with a chuck fixing seat fixedly mounted on one side of the top of the base. A stepper motor is fixedly mounted inside the chuck fixing seat, and the output end of the stepper motor extends out of one side of the chuck fixing seat and is fixedly connected to an electric chuck. By setting the chuck fixing seat and the internal stepper motor and electric chuck on the top of the base, and cooperating with the first electric telescopic rod, rotating seat, and clamping sleeve on the clamping frame, precise clamping of both ends of the rear axle body is achieved. Simultaneously, the two third electric telescopic rods and the pre-clamping frame in the pre-clamping mechanism pre-position and support the middle section of the rear axle body, forming a three-point positioning structure of "fixed ends + middle section support." This structure significantly improves the positioning accuracy and stability of the rear axle body, effectively reduces welding deformation, and improves the quality of the welded joint and the overall strength of the rear axle housing.

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.

This utility model relates to an automotive pipeline welding bracket, comprising a base plate and two sets of auxiliary fixing structures spaced apart on the base plate. Each auxiliary fixing structure includes: a base plate horizontally laid on the base plate; a top plate horizontally laid and spaced above the base plate; four sets of rotating parts, each set including at least a rotatable shaft and a pressing roller connected to the shaft, the pressing roller pressing against the pipeline; and a drive assembly including a gear and a rack, the gear being coaxially connected to an extension end of the shaft. This utility model, through the auxiliary fixing structure, enables two pipelines to rotate simultaneously during welding. During rotation, the welding equipment can operate continuously without frequent interruptions to adjust the weldment position, reducing auxiliary time and improving welding continuity and efficiency. Simultaneously, it ensures that the welding area receives welding heat evenly, avoiding localized overheating or undercooling.

The application discloses a double-flow-channel gas protection TIG welding gun, and relates to the technical field of welding devices.The welding gun comprises a tungsten electrode structure, a first pipeline structure, a second pipeline structure and a jet pipeline structure arranged in sequence from top to bottom, the first pipeline structure is provided with an outer protective gas inlet, the first pipeline structure is provided with a first outer protective gas channel, the second pipeline structure is provided with an inner protective gas inlet, the second pipeline structure is provided with a second outer protective gas channel and a first inner protective gas channel, the tungsten electrode structure is arranged in the jet pipeline structure, the tungsten electrode structure comprises a mounting seat and a tungsten needle, the jet pipeline structure and the mounting seat are provided with a third outer protective gas channel, the tungsten needle is arranged in the mounting seat, the length direction of the tungsten needle is perpendicular to the length direction of the first pipeline structure, the mounting seat and the tungsten needle are provided with the second inner protective gas channel, and one end of the tungsten needle extends out of the jet pipeline.The welding gun can realize double-gas protection, reduce spatter and form a beautiful weld.