Grain size and mechanical properties of 316H stainless steel forgings for fast reactor support rings fabricated by near net shape forming
Using electroslag remelting steel ingots,high-quality billets were prepared by hot extrusion after forging,and then formed by swage forging in a dedicated mold.The first domestic 316H stainless steel forging with an outer diameter of 15.5 meters and a weight of 15 tons for the 1/6 arc section of the fast reactor support ring has been developed,breaking through the technical bottleneck of manufacturing ultra large scale fast reactor support ring forgings.The results show that the grain size and tensile performance of each part of the forgings are uniform and consistent without anisotropy,and the fatigue performance fully meets the requirements of ASME design curve standards.The near net shape forming manufacturing process adopted greatly shortens the product manufacturing cycle,improves economic benefits,and realizes the localization of similar products.
NETL
NSTL
万方数据
