Weldability Improvement Methods for Reinforcement Steel

Socket device for welding reinforcing steel bars in concrete structures, enabling high-strength welding of joint connections without removing concrete. The device features a single socket that accommodates both ends of the reinforcing bars at one end, with separate welding areas for the first and second bars. The socket's unique design allows for simultaneous welding of both bars while maintaining structural integrity through the use of flux core arc welding or coated metal arc welding. The device eliminates the need for separate welding stations and supports the application of high-strength welding techniques.

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Automated production facility for welded rebar lattice that enables efficient production of reinforced concrete structures by automatically manufacturing the lattice structure through a continuous supply of reinforcing bars. The facility utilizes a rotating bar insertion system that simultaneously supplies main and secondary bars to the welding process, eliminating the need for manual bar handling. The system continuously supplies the bars through a coil supply device, eliminating the need for cutting and processing. The welded lattice structure is formed by rotating the bars into place, with the bars being automatically welded together.

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A high-precision automatic welding system for steel cage construction that significantly improves welding efficiency and quality. The system employs a dedicated welding machine with advanced automation capabilities, featuring a dedicated welding transformer, a high-speed wire winding motor, and a precision control system. The system enables automatic longitudinal reinforcement and ring reinforcement welding while maintaining precise control over the welding process, eliminating human error and ensuring consistent quality. The system's advanced control system includes a welding transformer, a welding controller, and a water-cooled cooling system, allowing for precise temperature control and wire feeding. The system's automatic return mechanism enables seamless completion of the welding process, while the traction mechanism ensures efficient cage movement.

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Weld reinforcement structure for prefabricated pipe piles that enhances structural integrity through improved weld quality and connection stability. The structure comprises a concrete pile body and a metal welding end, with the metal end positioned on the pile body's surface. A separate welding reinforcement is attached to the outside of the weld seam, providing additional support and reinforcement to the weld joint. This innovative approach addresses common issues associated with traditional flange connections in prefabricated pipe piles, particularly the potential for internal stress and structural instability during the welding process.

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A high-strength steel mesh structure for reinforced concrete construction that enhances weldability and structural integrity under heavy loads. The mesh comprises warp and weft steel bars that are welded together using continuous welding processes. The welds are strategically positioned along the mesh's longitudinal axis to distribute the load more evenly, while the continuous welding process eliminates the need for spot welding at connection points. This design enables the mesh to maintain its structural integrity even under extreme load conditions, while the continuous welding process ensures consistent and reliable weld quality.

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Steel for structural applications that maintains excellent toughness in the heat-affected zone (HAZ) while achieving high strength and toughness in base material after welding and stress relief. The steel composition comprises carbon between 0.16 and 0.20%, manganese between 1.0 and 1.5%, silicon less than 0.3%, aluminum between 0.005 and 0.5%, phosphorus less than 0.02%, sulfur less than 0.01%, titanium between 0.005 and 0.02%, niobium between 0.01 and 0.1%, and nitrogen between 0.006 and 0.01%. The steel undergoes controlled cooling during hot rolling to prevent excessive grain growth in the HAZ, while maintaining optimal microstructure for base material strength and toughness.

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Mixed reinforced concrete member for high-altitude structures using staggered welding. The member combines compression components by processing them in sections and then welding them in stages using dislocation welding technology. This approach enables the construction of compression components in sections, allowing them to be transported and assembled in stages. The sections are welded together using dislocation welding, which provides improved bearing capacity and height compared to traditional methods.

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Automatic welding device for reinforcing bar structures that improves manufacturing efficiency by automatically supplying back bars at regular intervals during main bar pulling. The device continuously supplies back bars to the main bar while it is being pulled, ensuring consistent spacing and quality. The back bar supply unit can be adjusted according to the specific design requirements, allowing precise control over the spacing between back muscles. This eliminates the need for manual back muscle welding and reduces labor costs compared to traditional methods.

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A steel mesh welding system for constructing concrete structures that enables the production of long and narrow steel mesh sections. The system comprises a specialized welding apparatus designed to handle long, narrow steel mesh sections that cannot be produced using conventional cutting methods. The apparatus employs a combination of straightening, shearing, and butt welding operations to effectively weld the mesh sections together while maintaining their structural integrity. This enables the production of critical components in concrete structures that are typically fabricated using standard mesh sizes.

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Fully automatic welding production equipment for beam or column reinforcement cages that automates the transportation of bent stirrups and longitudinal bars to the welding device. The system enables precise positioning of reinforcement elements during welding, eliminating manual feeding and positioning challenges. The equipment integrates automatic transport mechanisms for both stirrups and longitudinal bars, ensuring accurate placement during welding operations.

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A connection structure and welding method for web and chord in steel truss bridges that enhances section strength and fatigue resistance while maintaining structural integrity. The connection comprises a web and chord assembly with a modified welding joint that eliminates the conventional butt weld between the web flange and chord plate. Instead, the weld is formed at the web-chord interface, creating a continuous weld line that distributes the load across the web-chord joint. This eliminates the traditional butt weld cross-section weakness and stress concentration points, while maintaining the structural integrity of the web-chord assembly.

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A mesh prestressed high-strength concrete pipe pile steel cage cage welding system that achieves automated mesh preparation through coordinated processes in a drum. The system comprises a high-performance cage cage welding device, a precision straightening unit, and a precision cutting unit. The cage cage is manufactured through a spiral steel bar cage roller welding process that can prepare mesh structures, while the precision straightening and cutting units ensure accurate alignment and finishing of the mesh. This integrated system enables efficient mesh preparation for prestressed concrete piles through automated processes.

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A reinforced concrete beam reinforcement system that enhances opening reinforcement by incorporating a specialized reinforcement unit. The system comprises a beam reinforcement unit with a single bar arrangement structure, specifically designed to provide enhanced tensile strength for opening reinforcement. The beam reinforcement unit features a reinforced concrete section with a single bar arrangement, combined with a specialized opening reinforcement unit that incorporates multiple reinforcing bars welded to the beam bar unit main body. This integrated approach enables the creation of a reinforced concrete section with superior tensile capacity for opening reinforcement, particularly in applications where openings are critical to structural integrity.

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A reinforced welded pole system that enhances the structural integrity of overhead transmission lines by providing a durable, high-strength connection between the pole sections. The system comprises a reinforced welded joint where the upper and lower sections of the pole are welded together using a specialized welding process that incorporates multiple electrode compositions. This process creates a robust, high-strength weld that resists wind loads and environmental factors, while maintaining the structural integrity of the pole. The reinforced weld joint provides a reliable connection between the pole sections, compensating for the inherent weaknesses of cement-based pole construction.

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Gas metal arc welding (GMAW) process for marine structures and similar applications improves weld quality by controlling microstructure evolution. The invention introduces a novel composition that balances critical elements such as carbon, silicon, manganese, chromium, and titanium to achieve optimal weld microstructure. The composition enables a stable, fine-grained microstructure with improved toughness, while maintaining sufficient strength and weldability. This composition enables the production of welds with enhanced impact resistance and reduced cracking susceptibility, particularly in high-strength steel applications.

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A composite stirrup for reinforced concrete structures featuring a unique annular design that combines the benefits of traditional stirrups with improved structural performance. The stirrup comprises a ring-shaped outer group and an inner group of stirrups, where each outer group segment is welded by butt welding. The inner group comprises transverse and vertical stirrups connected by spot-welded points. This design eliminates the need for hook lengths and eliminates the risk of structural failure associated with traditional stirrup designs. The combination of butt-welded outer segments and spot-welded inner sections provides enhanced resistance to shear forces while maintaining structural integrity.

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A system for constructing weld-stabilized rebar panels through rapid spot fusion welding using a GMAW process. The system employs a rebar shear to cut rebar sections, a rebar bender to shape them, a welding jig to position the rebar for welding, and a rebar welder to perform the welds. The welding process enables rapid and precise welding of rebar intersections, eliminating the need for traditional tie wire or mechanical couplers. The system enables the construction of large, complex rebar panels with reduced labor and material costs compared to conventional methods.

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A reinforcing steel bar connection structure that enables direct welding of reinforcing steel bars to concrete by eliminating the need for separate sleeves. The structure employs friction welding to connect the reinforcing steel bar to the concrete, eliminating the need for separate sleeves. The connection process involves friction welding the reinforcing steel bar to the concrete, resulting in a strong and reliable connection that meets construction requirements.

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A welding machine pressure system for reinforcing steel bars that enhances welding quality. The system provides precise control over the welding process by applying controlled air pressure to the reinforcing steel bar during the welding operation. This pressure control enables precise control over the welding parameters, including penetration depth, bead width, and weld quality, which are critical factors in achieving high-quality reinforcement joints. The system is particularly effective for welding reinforcement bars in high-strength concrete applications where precise control over the welding process is essential.

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A welding system for reinforcing steel net welding that enables efficient welding even at low power supply rates. The system comprises a reinforcing steel net welding device that incorporates a high-performance welding head with a built-in power management system. The system optimizes welding parameters such as voltage, current, and arc length to maintain consistent weld quality while reducing power consumption. This enables reliable and efficient welding operations even when power supply rates are limited.

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