Weldability Improvement Methods for Reinforcement Steel

High-strength steel bar welded mesh with enhanced corrosion resistance through a multi-layer protective system. The mesh comprises a primary protective layer, followed by an anti-corrosion layer, and finally a secondary protective layer. This multi-layer approach ensures comprehensive protection against corrosion while maintaining the structural integrity of the mesh.

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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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High-strength and high-toughness steel mesh comprising a steel mesh body with a combination of transverse and longitudinal steel bars, where the transverse steel bars and longitudinal steel bars are welded to each other.

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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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A high-strength, high-seismic reinforcing bar for concrete structures that combines enhanced mechanical properties with improved toughness. The bar contains 0.10-0.40% carbon, 0.05-0.50% silicon, 0.50-2.0% manganese, and phosphorus (P) in a controlled composition. The bar's surface layer is tempered to a martensitic structure, while the central portion exhibits a composite ferrite-pearlite microstructure with a tissue fraction of 35% or higher. This dual-phase structure provides both high strength and improved toughness, particularly at elevated temperatures. The composition and microstructure are optimized to balance strength, ductility, and seismic performance.

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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 robot welding device for steel mesh applications that simplifies the welding process while reducing manufacturing costs. The device features a compact welding head mounted on a sliding bracket, with a fixed part positioned on the bracket to secure the mesh. The welding head is connected to a main body that provides the welding operation. This design enables precise mesh welding while minimizing the need for additional equipment and personnel.

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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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A ribbed steel bar for concrete structures that enhances bonding and anchoring between the steel reinforcement and concrete through a novel rib configuration. The rib design combines the conventional longitudinal and transverse ribs with a unique crescent-shaped rib pattern, which significantly improves the mechanical occlusal force between the steel reinforcement and concrete. This design enables enhanced bonding and anchoring, particularly in high-rise structures where traditional rib configurations may not suffice. The crescent-shaped rib pattern creates a more efficient mechanical interface between the steel reinforcement and concrete, thereby enhancing the structural performance of reinforced concrete structures.

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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 combined anchor and rebar assembly for concrete structures that simplifies installation. The assembly comprises a rebar, a rebar head, an anchor bolt, and a weld joint. The anchor bolt is specifically designed to be compatible with the rebar head, eliminating the need for separate rebar installation. The weld joint enables seamless connection between the anchor bolt and rebar, while the anchor bolt provides the necessary anchorage for the rebar. This integrated design streamlines construction processes by eliminating the need for separate rebar installation steps.

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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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