The forming technique by spinning for the necking parts of zircalloy-4 guide tubes for nuclear reactors is described.
本文阐述核反应堆用锆-4合金导向管缩径段的旋压成型工艺。
2
Reports suggest there was a partial meltdown and that the zircalloy rods began to "bubble". This was why the reactors were flooded with sea water.
报告表明有一部分溶毁并且锆棒气泡化，因为反应堆被海水淹没。
3
This is when the uranium and the zircalloy fuel rods at the heart of the reactor melt. It occurs at temperatures above 2,200c, releasing highly radioactive particles.