【科技日报】世界最大环向场磁体线圈盒在安徽合肥交付

Core Insights - The successful delivery of the toroidal field coil box marks a significant step towards the commercialization of fusion energy [2] - The technology developed for the coil box has potential applications in aerospace, energy equipment, and marine engineering sectors [2] Group 1: Project Development - The toroidal field coil box, measuring 21 meters by 12 meters and weighing 400 tons, is the largest of its kind in the world, exceeding the dimensions of similar components in the International Thermonuclear Experimental Reactor (ITER) by more than 1.2 times and weighing about twice as much [1] - The project team took over 5 years to overcome multiple key technical challenges, including the domestication of low-temperature stainless steel 316LMn and the development of large-scale 316LN forgings and ultra-thick steel plates [1] - Advanced manufacturing techniques were developed, such as a combination of laser welding for thick materials and phased array non-destructive testing, to ensure the precision of the coil box welding [1] Group 2: Material and Technology Innovations - The coil box is constructed from ultra-low temperature austenitic stainless steel 316LN and 316LMn materials, showcasing advancements in material science for fusion applications [1] - Precision forming technology for 30-meter-long cooling pipes and the use of low-temperature resin with brazing for pipe installation were also developed, enhancing the overall assembly process [1]