Acording to the research on heat tretment technology of ductile Iron cylinder for BQH-21 type nuclear fuel transportation container,a domestic gap about heat treatment of ductile iron parts with big section is filled.
通过对BQH-21型核乏燃料运输容器球铁筒热处理工艺进行研究,填补了国家大截面球铁件产品热处理的空白。