在我们铸造车间里,铁水包盖以往是用铁皮做成的,很容易损坏。后来我们改用一个铁架子,外面用耐火材料包住,来做铁水包盖(如附图)。这种铁水包盖在倒铁水的时候,不必取下再盖上,因而使用期限长;而且浇铸工也不再受到从铁水中散失出来的热量的烘烤。 In our foundry, the ladle lid was made of sheet metal and easily damaged. Later, we use a steel shelf, surrounded by a refractory material, to do the lid of the hot metal (as the photo). The ladle is covered in the pouring of hot metal without having to remove it and replace it with a longer pot life, and the castor is no longer exposed to the heat that has been released from the hot metal.