世界最大，正式交付！攻克多项关键技术

Core Insights - The CRAFT project has achieved significant progress with the successful development and delivery of the toroidal field magnet coil box in Hefei, Anhui Province, marking an important step towards the commercialization of fusion energy [1][3] Group 1: Project Details - The toroidal field coil box is a critical structural component of the toroidal field magnet system, designed to protect the winding of the toroidal field coils and support other superconducting magnets [3] - The coil box is constructed from ultra-low temperature austenitic stainless steel 316LN and 316LMn, measuring 21 meters by 12 meters and weighing 400 tons, making it the largest of its kind in the world [3] - The overall dimensions of the coil box exceed those of similar components in the International Thermonuclear Experimental Reactor (ITER) by more than 1.2 times, and its weight is approximately double that of ITER's equivalent [3] Group 2: Development Timeline and Applications - The project team took over 5 years to overcome multiple key technical challenges from research to manufacturing completion [3] - The successful delivery of the toroidal field coil box represents a significant advancement in fusion energy commercialization, with potential applications in aerospace, energy equipment, and marine engineering [3]