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激冷试块
met.
chill block
(【技】冷铁:用来控制铸件凝固最常用的一种激冷物。它的主要作用是:加快铸件局部冷却速度、防止铸件产生缩孔或疏松缺陷。按位置不同分为外冷铁和内冷铁两种。外冷铁作为铸型的一部分,和铸件不熔接,可重复使用;内冷铁和铸件熔为一体,成为铸件的一部分。)
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