摘要
介绍球铁冷却、凝固过程中的体积变化以及型腔尺寸变化。分析、并用实例证明球铁件无冒口铸造的可行性及条件。指出无冒口铸造决不是无补缩铸造,强调采用高碳当量、高刚度铸型、同时凝固和强化铸型冷却以提高浇注系统补缩作用对实现无冒口铸造的重要性。
An introduction was made to volumetric changes of castings and dimension changes of mold cavity occurring during liquid cooling and solidification of nodular iron castings. The feasibility and prerequisites to realize feederless production of nodular iron castings was analyzed and proved with practical examples. It was pointed out that the feederless foundry method is by no means a feedingless method, and it was emphasized that adopting high carbon equivalent, high rigidity mold, synchronous solidification and intensifying cooling capacity of the mold to increase feeding effect of the gating system are important to successfully realize feederless production of nodular iron castings.
出处
《现代铸铁》
CAS
2004年第3期1-8,共8页
Modern Cast Iron
关键词
球铁
缩松
无冒口
补缩
<Keyword>nodular iron
shrinkage
feederless
feeding
