大型球铁件的铸造工艺设计

介绍大型球铁件铸造工艺设计的主要原则为:加工面向下；尽量采用一个分型面；采用底注；长度大的铸件采用两端同时浇注,重大件采用拔塞浇包浇注；铸件顶部设置明冒口；充分利用石墨化膨胀补缩.用具体实例说明适合于大型球铁铸件的各种铸造工艺原理和特点,以及浇注系统设计、冒口设计和冷铁使用的要点.

Casting Method Design of Heavy Ductile Iron Castings

The main casting method design principles of heavy ductile iron castings were introduced: putting the faces to be machined downwards;adopting single parting line as possible;adopting bottom gating system;pouring simultaneously from two ends for castings with large length,and using stop plug type pouring basin for the heavy and important castings;setting open risers on the top of castings;full utilizing graphitization expansion to compensate contraction.Some practical examples were showed to explain the prin...