For manufacturers of heavy steel structures, large valve bodies and offshore equipment, oversized workpieces feature long welding seams and difficult clamping. Single‑head welding equipment brings long cycle time, while manual welding causes severe thermal distortion and inconsistent weld quality. The dual‑robot gantry welding workstation acts as core automation equipment for heavy‑duty component production. Two welding robots are mounted on a travelling heavy‑duty gantry frame, and long‑travel ground rails extend the working envelope for mass production of large‑span heavy parts.

The integrated system consists of heavy‑load gantry beams, long‑stroke ground rails, dual robot units, synchronous motion controller, laser seam‑tracking module, welding power sources, safety enclosures and HMI control cabinet. Twin robots can perform synchronized coordinated welding or work independently for different welding zones, with built‑in anti‑collision algorithms ensuring safe operation. Supporting MIG/MAG, TIG and plasma cladding processes, it completes structural welding for H‑beams, box girders and bridge components, as well as plasma cladding for sealing surfaces of large butterfly valves, ball valves and nuclear‑grade valve bodies.

Synchronized dual‑robot welding balances heat input and suppresses thermal distortion of large weldments to cut post‑weld correction workload, greatly raising productivity versus single‑robot gantry solutions. Laser seam‑tracking compensates assembly gaps and positioning offset in real‑time. Reusable process parameters guarantee stable weld quality in mass production and reduce welding defects. One single operator can supervise the whole workstation, easing the shortage of skilled welders. Isolated barriers block arc flash and welding fume to improve workshop working conditions.

Superior to ordinary single‑robot gantry units, this workstation fits heavy‑load and high‑cycle production scenarios. Gantry span and rail travel length support customisation. Complete turn‑key service covers on‑site installation, commissioning and operator training, helping heavy‑industry manufacturers break bottlenecks of large‑part welding and achieve higher output with better quality.