11results about How to "Beautiful weld shape" patented technology

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 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.

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 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.

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.