65铌冷冲模具钢是华中工学院和大冶钢厂共同研制的新钢种。它具有高强度、高韧性等优点,经过正确的热处理,能获得较好的综合机械性能。杭州链条厂于一九八○年把这种钢用于链板冲模,提高寿命六倍以上,降低成本34％,一年节约了二十万元。随后,杭州市科委组织有关单位成立了“65铌冷冲模具钢推广应用协作组”,并选择一些 65 niobium cold-stamping die steel is a new kind of steel jointly developed by Huazhong Institute of Technology and Daye Steel. It has the advantages of high strength, high toughness, after the correct heat treatment, can get a better overall mechanical properties. Hangzhou Chain Factory used the steel for chain plate dies in 1980, raising its life expectancy by more than six times, reducing the cost by 34% and saving a hundred thousand dollars a year. Subsequently, Hangzhou Science and Technology Commission organized the relevant units set up a “65 Niobu die steel promotion and application of collaborative group” and choose some