Abstract:Considering high complexity and high safety requirements in the smelting section of metallurgical industry, a lightweight 3D digital twin system architecture based on Unreal Engine 5 (UE5) engine and pixel stream push technology was proposed. Cross-platform low-delay visual monitoring of the whole process of smelting section was realized through key technologies such as multi-level model lightweight processing, multi-terminal deployment of distributed pixel stream and real-time data-driven model construction. The system integrated functions of production control, data cockpit, automatic inspection and equipment disassembly, reducing hardware costs by more than 40% and increasing production efficiency by more than 20%. It provided a general technical path for metallurgical industry intelligence.